/* ========================================
   NitroCycle v3 - Retro Pixel Art Style
   ======================================== */

/* Import pixel font */
@import url('https://fonts.googleapis.com/css2?family=Press+Start+2P&display=swap');

/* ============= LANGUAGE TOGGLE ============= */
#lang-toggle {
    position: fixed;
    top: 6px;
    right: 8px;
    z-index: 10000;
    display: flex;
    gap: 2px;
    background: #181425;
    padding: 2px;
    border: 2px solid #f4f4f4;
    box-shadow: 0 3px 0 0 #000;
    font-family: 'Press Start 2P', monospace;
}

#lang-toggle .lang-btn {
    font-family: inherit;
    font-size: 8px;
    line-height: 1;
    padding: 4px 6px;
    background: transparent;
    color: #f4f4f4;
    border: 1px solid transparent;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 3px;
    transition: background 0.1s, color 0.1s;
}

#lang-toggle .lang-btn:hover {
    background: #3b5dc9;
    color: #feae34;
}

#lang-toggle .lang-btn.active {
    background: #38b764;
    color: #181425;
    border-color: #a7f070;
}

#lang-toggle .lang-flag {
    font-size: 11px;
    line-height: 1;
    /* Emoji flag rendering — keep browser default, don't pixelate */
}

@media (max-width: 480px) {
    #lang-toggle {
        top: 4px;
        right: 4px;
    }
    #lang-toggle .lang-btn {
        font-size: 7px;
        padding: 3px 4px;
        gap: 2px;
    }
    #lang-toggle .lang-flag { font-size: 9px; }
}


/* ============= SPEED TOGGLE (½× / 1× / 2×) ============= */
#speed-toggle {
    display: inline-flex;
    gap: 2px;
    background: #181425;
    padding: 2px;
    border: 2px solid #f4f4f4;
    box-shadow: 0 3px 0 0 #000;
    font-family: 'Press Start 2P', monospace;
    align-items: center;
}

#speed-toggle .speed-btn {
    font-family: inherit;
    font-size: 8px;
    line-height: 1;
    padding: 4px 6px;
    background: transparent;
    color: #f4f4f4;
    border: 1px solid transparent;
    cursor: pointer;
    transition: background 0.1s, color 0.1s;
}

#speed-toggle .speed-btn:hover {
    background: #3b5dc9;
    color: #feae34;
}

#speed-toggle .speed-btn.active {
    background: #38b764;
    color: #181425;
    border-color: #a7f070;
}

@media (max-width: 480px) {
    #speed-toggle .speed-btn { font-size: 7px; padding: 3px 4px; }
}

:root {
    /* Retro color palette */
    --bg-dark: #1a1c2c;
    --bg-medium: #2a2d3a;
    --bg-light: #3a3d4a;
    --pixel-green: #38b764;
    --pixel-green-light: #a7f070;
    --pixel-blue: #41a6f6;
    --pixel-blue-dark: #3b5dc9;
    --pixel-red: #e43b44;
    --pixel-orange: #f77622;
    --pixel-yellow: #feae34;
    --pixel-brown: #6f4e37;
    --pixel-brown-light: #a77b5b;
    --pixel-purple: #b55088;
    --pixel-cyan: #73eff7;
    --pixel-white: #f4f4f4;
    --pixel-black: #181425;

    /* Pixel sizes */
    --pixel: 4px;
    --pixel-border: 4px solid;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    /* Disable smooth rendering for pixel art feel */
    image-rendering: pixelated;
    image-rendering: crisp-edges;
}

html, body {
    height: 100%;
    overflow: hidden;
    position: fixed;
    width: 100%;
}

/* Prevent any scroll jump on button click */
button {
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: 'Press Start 2P', monospace;
    background-color: var(--bg-dark);
    color: var(--pixel-white);
    font-size: 12px;
    line-height: 1.6;
}

/* Pixel art border style */
.pixel-border {
    border: var(--pixel-border) var(--pixel-black);
    box-shadow:
        inset -4px -4px 0 0 #0008,
        inset 4px 4px 0 0 #fff2;
}

.pixel-border-light {
    border: var(--pixel-border) var(--pixel-white);
    box-shadow:
        inset -4px -4px 0 0 #0004,
        inset 4px 4px 0 0 #fff4;
}

/* ========== DIFFICULTY SELECT ========== */
#difficulty-select {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-dark);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1500;
}

#difficulty-select.hidden {
    display: none;
}

.diff-header {
    text-align: center;
    margin-bottom: 24px;
}

.diff-logo {
    font-size: 28px;
    color: var(--pixel-green-light);
    text-shadow: 3px 3px 0 var(--pixel-black), 0 0 20px rgba(115, 239, 247, 0.3);
    letter-spacing: 4px;
    animation: title-glow 2.5s ease-in-out infinite 1.2s;
}

/* Each letter drops in with a bounce, then floats in a wave */
.title-letter {
    display: inline-block;
    opacity: 0;
    transform: translateY(-50px) scale(1.3);
    animation:
        letter-drop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) forwards,
        letter-wave 3s ease-in-out infinite 1.2s;
    animation-delay: calc(var(--i) * 0.08s), calc(1.2s + var(--i) * 0.15s);
}

@keyframes letter-drop {
    0%   { opacity: 0; transform: translateY(-50px) scale(1.3) rotate(-8deg); }
    60%  { opacity: 1; transform: translateY(4px) scale(0.95) rotate(2deg); }
    80%  { transform: translateY(-2px) scale(1.02) rotate(-1deg); }
    100% { opacity: 1; transform: translateY(0) scale(1) rotate(0deg); }
}

/* Continuous wave: letters gently float up/down + tilt */
@keyframes letter-wave {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    25%      { transform: translateY(-4px) rotate(2deg); }
    75%      { transform: translateY(3px) rotate(-2deg); }
}

/* Glow pulse cycling green ↔ cyan after letters land */
@keyframes title-glow {
    0%, 100% {
        text-shadow: 3px 3px 0 var(--pixel-black), 0 0 20px rgba(115, 239, 247, 0.3);
        color: var(--pixel-green-light);
    }
    50% {
        text-shadow: 3px 3px 0 var(--pixel-black), 0 0 30px rgba(115, 239, 247, 0.6), 0 0 60px rgba(56, 183, 100, 0.2);
        color: var(--pixel-cyan);
    }
}

/* Tagline fades in after title lands */
.diff-tagline {
    font-size: 8px;
    color: #888;
    margin-top: 8px;
    letter-spacing: 2px;
    opacity: 0;
    animation: tagline-fade 0.6s ease forwards 1.0s;
}

@keyframes tagline-fade {
    0%   { opacity: 0; transform: translateY(8px); }
    100% { opacity: 1; transform: translateY(0); }
}

.diff-title {
    font-size: 14px;
    color: var(--pixel-yellow);
    text-shadow: 2px 2px 0 var(--pixel-black);
    margin-bottom: 20px;
}

.diff-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 20px;
}

.diff-btn {
    font-family: 'Press Start 2P', monospace;
    padding: 20px 24px;
    background: var(--bg-medium);
    border: 3px solid var(--pixel-white);
    color: var(--pixel-white);
    cursor: pointer;
    text-align: center;
    transition: all 0.15s;
    min-width: 160px;
    box-shadow: 0 4px 0 0 var(--pixel-black);
}

.diff-btn:hover, .diff-btn.selected {
    border-color: var(--pixel-yellow);
    transform: translateY(-3px);
    box-shadow: 0 7px 0 0 var(--pixel-black);
}

.diff-name {
    display: block;
    font-size: 14px;
    color: var(--pixel-green-light);
    margin-bottom: 8px;
}

.diff-desc {
    display: block;
    font-size: 7px;
    color: #888;
    line-height: 1.8;
}

.diff-actions {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
}

.diff-action-btn {
    font-family: 'Press Start 2P', monospace;
    font-size: 9px;
    padding: 10px 18px;
    background: transparent;
    border: 2px solid #555;
    color: #aaa;
    cursor: pointer;
    transition: all 0.15s;
}

.diff-action-btn:hover {
    border-color: var(--pixel-cyan);
    color: var(--pixel-white);
    background: rgba(115, 239, 247, 0.1);
}

.diff-quickguide {
    background: rgba(0, 0, 0, 0.4);
    border: 2px solid #333;
    padding: 16px 20px;
    max-width: 520px;
    text-align: left;
}

.qg-title {
    font-size: 9px;
    color: var(--pixel-cyan);
    margin-bottom: 10px;
    text-align: center;
    letter-spacing: 2px;
}

.qg-items {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.qg-item {
    font-size: 7px;
    color: #bbb;
    line-height: 1.6;
}

.qg-item.bad {
    color: var(--pixel-red);
}

.qg-item strong {
    color: var(--pixel-yellow);
}

.qg-key {
    display: inline-block;
    background: var(--bg-medium);
    border: 1px solid #555;
    padding: 2px 6px;
    font-size: 6px;
    color: var(--pixel-green-light);
    margin-right: 6px;
    min-width: 60px;
    text-align: center;
}

/* ========== PAUSE OVERLAY ========== */
#pause-overlay {
    /* Compact floating card instead of a fullscreen blackout so the player
       can still see the game state (canvas, pools, stats) while paused. */
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 2000;
    pointer-events: none; /* only the card itself captures clicks */
}

#pause-overlay.hidden {
    display: none;
}

#pause-content {
    text-align: center;
    background: var(--bg-dark);
    border: 3px solid var(--pixel-yellow);
    padding: 24px 28px;
    box-shadow:
        0 6px 0 0 var(--pixel-black),
        inset -3px -3px 0 0 #0006,
        inset 3px 3px 0 0 #fff2;
    pointer-events: auto;
}

#pause-title {
    font-size: 20px;
    color: var(--pixel-yellow);
    text-shadow: 3px 3px 0 var(--pixel-black);
    margin-bottom: 20px;
    letter-spacing: 4px;
}

#pause-buttons {
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: center;
}

.pause-menu-btn {
    font-family: 'Press Start 2P', monospace;
    font-size: 11px;
    padding: 14px 28px;
    background: var(--bg-medium);
    border: 3px solid var(--pixel-white);
    color: var(--pixel-white);
    cursor: pointer;
    transition: all 0.15s;
    min-width: 260px;
    text-align: left;
    box-shadow: 0 3px 0 0 var(--pixel-black);
}

.pause-menu-btn:hover {
    border-color: var(--pixel-cyan);
    transform: translateY(-2px);
    box-shadow: 0 5px 0 0 var(--pixel-black);
    color: var(--pixel-cyan);
}

.pause-menu-btn.quit {
    border-color: #555;
    color: #888;
    margin-top: 10px;
}

.pause-menu-btn.quit:hover {
    border-color: var(--pixel-red);
    color: var(--pixel-red);
}

/* ========== LOGO BAR ========== */
.logo-bar {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 24px;
    margin-top: 16px;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 4px;
}
.partner-logo {
    height: 40px;
    width: auto;
    opacity: 0.85;
    transition: opacity 0.2s, transform 0.2s;
    filter: brightness(1.1);
}
.partner-logo:hover {
    opacity: 1;
    transform: scale(1.1);
}
@media (max-width: 480px) {
    .logo-bar { gap: 14px; padding: 8px 10px; }
    .partner-logo { height: 28px; }
}

/* ========== CREDITS LINE ========== */
.credits {
    font-family: 'Press Start 2P', monospace;
    font-size: 7px;
    color: #888;
    text-align: center;
    margin-top: 14px;
    line-height: 1.6;
}
.credits a {
    color: var(--pixel-cyan);
    text-decoration: none;
}
.credits a:hover {
    color: var(--pixel-yellow);
    text-decoration: underline;
}

/* ========== GAME CONTAINER ========== */
#game-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    padding: 8px;
    gap: 8px;
    overflow: hidden;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

/* ========== HEADER ========== */
#game-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(180deg, var(--pixel-blue-dark) 0%, var(--pixel-blue) 100%);
    /* Right padding leaves room for the floating #lang-toggle so the
       icon buttons don't slide under it. */
    padding: 8px 110px 8px 16px;
    border: var(--pixel-border) var(--pixel-black);
    box-shadow:
        inset -4px -4px 0 0 #0006,
        inset 4px 4px 0 0 #fff3,
        0 4px 0 0 var(--pixel-black);
}

#game-header h1 {
    font-size: 18px;
    color: var(--pixel-yellow);
    text-shadow: 2px 2px 0 var(--pixel-black);
}

#header-controls {
    display: flex;
    gap: 8px;
}

.icon-btn {
    font-family: 'Press Start 2P', monospace;
    font-size: 10px;
    padding: 8px 12px;
    background: var(--pixel-black);
    color: var(--pixel-green);
    border: 2px solid var(--pixel-white);
    cursor: pointer;
    transition: all 0.1s;
}

.icon-btn:hover {
    background: var(--pixel-green);
    color: var(--pixel-black);
}

.icon-btn.off {
    color: var(--pixel-red);
    opacity: 0.6;
}

.icon-btn.pause-btn {
    color: var(--pixel-yellow);
    border-color: var(--pixel-yellow);
    letter-spacing: -2px;
}

.icon-btn.pause-btn:hover {
    background: var(--pixel-yellow);
    color: var(--pixel-black);
}

.icon-btn.off:hover {
    background: var(--pixel-red);
    color: var(--pixel-white);
}

#header-stats {
    display: flex;
    gap: 16px;
}

.stat-box {
    background: var(--pixel-black);
    padding: 6px 14px;
    border: 2px solid var(--pixel-white);
    font-size: 12px;
}

.stat-box span {
    color: var(--pixel-yellow);
}

/* ========== MAIN GAME AREA ========== */
#game-main {
    display: grid;
    grid-template-columns: 230px 1fr 210px;
    /* Explicit single row that fills the flex space — without this the
       row defaults to `auto`, which expands to fit the canvas content
       and creates a feedback loop with the canvas's resize() handler. */
    grid-template-rows: minmax(0, 1fr);
    gap: 8px;
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

/* ========== LEFT PANEL - Nitrogen Pools ========== */
#left-panel {
    display: flex;
    flex-direction: column;
    gap: 8px;
    /* Scroll inside the grid cell when the pool list is taller than
       the available height (smaller monitors / 100% browser zoom). */
    overflow-y: auto;
    min-height: 0;
}

.panel {
    background: var(--bg-medium);
    border: var(--pixel-border) var(--pixel-black);
    padding: 8px;
    box-shadow:
        inset -4px -4px 0 0 #0004,
        inset 4px 4px 0 0 #fff1;
}

.panel-title {
    font-size: 10px;
    color: var(--pixel-cyan);
    text-align: center;
    margin-bottom: 8px;
    padding-bottom: 4px;
    border-bottom: 2px dashed var(--pixel-cyan);
    text-shadow: 1px 1px 0 var(--pixel-black);
}

/* Pool items */
.pool-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
    margin-bottom: 8px;
    padding: 4px;
    background: var(--bg-dark);
    border: 2px solid var(--pixel-black);
}

.pool-header {
    display: flex;
    align-items: center;
    gap: 6px;
}

.pool-icon {
    width: 16px;
    height: 16px;
    image-rendering: pixelated;
}

.pool-name {
    font-size: 8px;
    flex: 1;
}

.pool-value {
    font-size: 10px;
    color: var(--pixel-yellow);
    min-width: 28px;
    text-align: right;
}

/* Pixel art progress bar */
.pool-bar {
    height: 8px;
    background: var(--pixel-black);
    border: 2px solid #333;
    position: relative;
    overflow: hidden;
}

.pool-fill {
    height: 100%;
    transition: width 0.3s steps(10);
}

.pool-fill.n2 { background: var(--pixel-blue); }
.pool-fill.nh4 { background: var(--pixel-cyan); }
.pool-fill.no3 { background: var(--pixel-green); }
.pool-fill.organic { background: var(--pixel-brown-light); }
.pool-fill.n2o { background: var(--pixel-red); }
.pool-fill.leached { background: var(--pixel-purple); }

/* ========== CENTER - Game Canvas ========== */
#center-panel {
    display: flex;
    flex-direction: column;
    min-height: 0;
    /* Prevents the canvas from growing past its grid cell and feeding
       back into resize() each frame. */
    overflow: hidden;
}

#canvas-container {
    flex: 1;
    background: var(--pixel-black);
    border: var(--pixel-border) var(--pixel-black);
    box-shadow:
        inset 0 0 0 4px var(--bg-medium),
        0 4px 0 0 var(--pixel-black);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

#game-canvas {
    width: 100%;
    height: 100%;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
}

/* ========== RIGHT PANEL - Plant Status ========== */
#right-panel {
    display: flex;
    flex-direction: column;
    gap: 8px;
    /* Scroll inside the grid cell — same pattern as #left-panel.
       Replaces an older `max-height: calc(100vh - 140px)` that was
       fragile against header / action-panel height changes. */
    overflow-y: auto;
    min-height: 0;
}

/* Plant card */
#plant-card {
    background: linear-gradient(180deg, var(--pixel-green) 0%, #2d8a4e 100%);
    border: var(--pixel-border) var(--pixel-black);
    padding: 12px;
    text-align: center;
    box-shadow:
        inset -4px -4px 0 0 #0004,
        inset 4px 4px 0 0 #fff2;
}

#plant-sprite {
    width: 64px;
    height: 64px;
    margin: 0 auto 8px;
    image-rendering: pixelated;
    animation: bob 1s ease-in-out infinite;
}

@keyframes bob {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-4px); }
}

#plant-stage-name {
    font-size: 12px;
    color: var(--pixel-yellow);
    text-shadow: 2px 2px 0 var(--pixel-black);
}

/* Growth dots */
#growth-dots {
    display: flex;
    justify-content: center;
    gap: 4px;
    margin-top: 8px;
}

.growth-dot {
    width: 12px;
    height: 12px;
    background: var(--pixel-black);
    border: 2px solid var(--pixel-white);
}

.growth-dot.active {
    background: var(--pixel-yellow);
    animation: pulse 1s ease-in-out infinite;
}

.growth-dot.completed {
    background: var(--pixel-green-light);
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

/* Health bar */
#health-card {
    background: var(--bg-medium);
    border: var(--pixel-border) var(--pixel-black);
    padding: 8px;
}

#health-card .panel-title {
    color: var(--pixel-red);
    border-bottom-color: var(--pixel-red);
}

#health-bar {
    height: 16px;
    background: var(--pixel-black);
    border: 2px solid var(--pixel-white);
    position: relative;
    overflow: hidden;
}

#health-fill {
    height: 100%;
    background: linear-gradient(180deg, var(--pixel-green-light) 0%, var(--pixel-green) 50%, #2d8a4e 100%);
    transition: width 0.3s steps(10);
    position: relative;
}

#health-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(180deg, rgba(255,255,255,0.3) 0%, transparent 100%);
}

#health-fill.warning {
    background: linear-gradient(180deg, var(--pixel-yellow) 0%, var(--pixel-orange) 100%);
}

#health-fill.danger {
    background: linear-gradient(180deg, var(--pixel-orange) 0%, var(--pixel-red) 100%);
    animation: health-flash 0.5s ease-in-out infinite;
}

@keyframes health-flash {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

#health-text {
    font-size: 10px;
    text-align: center;
    margin-top: 4px;
    color: var(--pixel-green-light);
}

/* Event log */
#event-log {
    flex: 1;
    background: var(--bg-medium);
    border: var(--pixel-border) var(--pixel-black);
    padding: 8px;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

#log-content {
    flex: 1;
    overflow-y: auto;
    font-size: 7px;
    line-height: 1.8;
}

.log-entry {
    padding: 2px 0;
    border-bottom: 1px dotted var(--bg-light);
}

.log-entry.good { color: var(--pixel-green-light); }
.log-entry.bad { color: var(--pixel-red); }
.log-entry.warning { color: var(--pixel-yellow); }

/* ========== ACTION PANEL ========== */
#action-panel {
    background: var(--bg-medium);
    border: var(--pixel-border) var(--pixel-black);
    padding: 8px 12px;
    box-shadow: 0 -4px 0 0 var(--pixel-black);
}

#action-buttons {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 6px;
}

/* Pixel art buttons */
.action-btn {
    font-family: 'Press Start 2P', monospace;
    font-size: 9px;
    padding: 10px 6px;
    background: linear-gradient(180deg, var(--pixel-blue) 0%, var(--pixel-blue-dark) 100%);
    color: var(--pixel-white);
    border: 3px solid var(--pixel-black);
    cursor: pointer;
    text-align: center;
    position: relative;
    transition: transform 0.1s;
    box-shadow:
        inset -3px -3px 0 0 #0006,
        inset 3px 3px 0 0 #fff3,
        0 3px 0 0 var(--pixel-black);
}

.action-btn:focus {
    outline: none;
}

.action-btn:hover {
    transform: translateY(-2px);
    box-shadow:
        inset -4px -4px 0 0 #0006,
        inset 4px 4px 0 0 #fff3,
        0 6px 0 0 var(--pixel-black);
}

.action-btn:active {
    transform: translateY(2px);
    box-shadow:
        inset -4px -4px 0 0 #0006,
        inset 4px 4px 0 0 #fff3,
        0 2px 0 0 var(--pixel-black);
}

.action-btn:disabled {
    background: var(--bg-light);
    color: #666;
    cursor: not-allowed;
    transform: none;
}

.action-btn.green {
    background: linear-gradient(180deg, var(--pixel-green) 0%, #2d8a4e 100%);
}

.action-btn.brown {
    background: linear-gradient(180deg, var(--pixel-brown-light) 0%, var(--pixel-brown) 100%);
}

.action-btn.yellow {
    background: linear-gradient(180deg, var(--pixel-yellow) 0%, var(--pixel-orange) 100%);
    color: var(--pixel-black);
}

.btn-label {
    display: block;
    font-size: 8px;
}

/* ========== SCROLLBAR - Pixel style ========== */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--pixel-black);
    border: 2px solid var(--bg-light);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-light);
    border: 2px solid var(--pixel-black);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--pixel-blue);
}

/* ========== GAME OVER OVERLAY ========== */
#overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

#overlay.hidden {
    display: none;
}

#overlay-content {
    background: var(--bg-medium);
    border: var(--pixel-border) var(--pixel-yellow);
    padding: 32px;
    text-align: center;
    max-width: 400px;
    box-shadow:
        0 0 0 4px var(--pixel-black),
        0 0 0 8px var(--pixel-yellow),
        0 0 40px var(--pixel-yellow);
}

#overlay-title {
    font-size: 22px;
    margin-bottom: 16px;
    text-shadow: 2px 2px 0 var(--pixel-black);
}

#overlay-title.win {
    color: var(--pixel-green-light);
}

#overlay-title.lose {
    color: var(--pixel-red);
}

#overlay-message {
    font-size: 11px;
    margin-bottom: 16px;
    line-height: 2;
}

#overlay-stats {
    background: var(--pixel-black);
    padding: 12px;
    margin-bottom: 16px;
    font-size: 10px;
    border: 2px solid var(--pixel-white);
}

#btn-restart {
    font-family: 'Press Start 2P', monospace;
    font-size: 14px;
    padding: 18px 36px;
    background: linear-gradient(180deg, var(--pixel-green) 0%, #2d8a4e 100%);
    color: var(--pixel-white);
    border: var(--pixel-border) var(--pixel-black);
    cursor: pointer;
    box-shadow:
        inset -4px -4px 0 0 #0006,
        inset 4px 4px 0 0 #fff3,
        0 4px 0 0 var(--pixel-black);
    transition: transform 0.1s;
    /* Make PLAY AGAIN span the full row so SAVE/LEADERBOARD
       wrap onto a secondary row beneath it. */
    flex-basis: 100%;
}

#btn-restart:hover {
    transform: translateY(-2px);
}

#btn-restart:active {
    transform: translateY(2px);
}

/* ========== FEEDBACK POPUP ========== */
#feedback {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--pixel-black);
    border: var(--pixel-border) var(--pixel-yellow);
    padding: 16px 24px;
    font-size: 12px;
    z-index: 500;
    animation: popup 0.3s ease;
    text-align: center;
}

#feedback.hidden {
    display: none;
}

@keyframes popup {
    0% { transform: translate(-50%, -50%) scale(0); }
    50% { transform: translate(-50%, -50%) scale(1.1); }
    100% { transform: translate(-50%, -50%) scale(1); }
}

/* ========== LOADING SCREEN ========== */
#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-dark);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 2000;
}

#loading-screen.hidden {
    display: none;
}

#loading-title {
    font-size: 24px;
    color: var(--pixel-green);
    text-shadow: 4px 4px 0 var(--pixel-black);
    margin-bottom: 32px;
    animation: blink 1s steps(2) infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

#loading-bar-container {
    width: 300px;
    height: 24px;
    background: var(--pixel-black);
    border: var(--pixel-border) var(--pixel-white);
    padding: 4px;
}

#loading-bar {
    height: 100%;
    background: var(--pixel-green);
    width: 0%;
    transition: width 0.2s steps(10);
}

#loading-text {
    margin-top: 16px;
    font-size: 8px;
    color: var(--pixel-cyan);
}

#loading-subtitle {
    font-size: 10px;
    color: var(--pixel-yellow);
    margin-bottom: 24px;
}

/* ========== POOL SECTIONS ========== */
.pool-section {
    margin-bottom: 12px;
}

.section-label {
    font-size: 8px;
    color: var(--pixel-blue);
    text-transform: uppercase;
    padding: 2px 4px;
    background: var(--pixel-black);
    border-left: 3px solid var(--pixel-blue);
    margin-bottom: 6px;
}

.section-label.bad {
    color: var(--pixel-red);
    border-left-color: var(--pixel-red);
}

.pool-section.losses .pool-item {
    border-color: var(--pixel-red);
}

.pool-item.bad .pool-value {
    color: var(--pixel-red);
}

/* Pool icon colors */
.pool-icon {
    border-radius: 2px;
}

.n2-icon { background: var(--pixel-blue); }
.nh4-icon { background: var(--pixel-cyan); }
.no2-icon { background: var(--pixel-orange); }
.no3-icon { background: var(--pixel-green); }
.organic-icon { background: var(--pixel-brown-light); }
.n2o-icon { background: var(--pixel-red); }
.leached-icon { background: var(--pixel-purple); }

.pool-fill.no2 { background: var(--pixel-orange); }

.pool-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.pool-formula {
    font-size: 10px;
    color: var(--pixel-white);
}

.pool-name {
    font-size: 7px;
    color: #888;
}

.pool-item {
    cursor: pointer;
    transition: border-color 0.2s;
}

.pool-item:hover {
    border-color: var(--pixel-yellow);
}

/* ========== ENVIRONMENT PANEL ========== */
#env-panel {
    background: var(--bg-medium);
}

.env-item {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 8px;
}

.env-label {
    font-size: 9px;
    width: 65px;
}

.env-bar {
    flex: 1;
    height: 8px;
    background: var(--pixel-black);
    border: 2px solid #333;
}

.env-fill {
    height: 100%;
    transition: width 0.3s steps(10);
}

.env-fill.moisture { background: var(--pixel-blue); }
.env-fill.oxygen { background: var(--pixel-cyan); }

.env-value {
    font-size: 9px;
    color: var(--pixel-yellow);
    min-width: 32px;
    text-align: right;
}

/* ========== CYCLE DIAGRAM OVERLAY ========== */
#cycle-diagram {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, #0d1b2a 0%, #1a1c2c 30%, #2d1f0f 70%, #1a3a52 100%);
    /* Sits above #pause-overlay (z-index 2000) so that clicking N-CYCLE HELP
       from the pause menu properly displays the diagram on top of the menu
       rather than hiding it behind. */
    z-index: 2500;
    padding: 20px;
    overflow: auto;
    display: flex;
    flex-direction: column;
}

#cycle-diagram.hidden {
    display: none;
}

.cycle-header {
    text-align: center;
    margin-bottom: 10px;
}

.cycle-title {
    font-size: 14px;
    color: var(--pixel-yellow);
    text-shadow: 2px 2px 0 var(--pixel-black), 0 0 10px var(--pixel-yellow);
    animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
    from { text-shadow: 2px 2px 0 var(--pixel-black), 0 0 5px var(--pixel-yellow); }
    to { text-shadow: 2px 2px 0 var(--pixel-black), 0 0 15px var(--pixel-yellow); }
}

.cycle-subtitle {
    font-size: 9px;
    color: var(--pixel-cyan);
    margin-top: 4px;
    line-height: 1.5;
}

.cycle-canvas {
    flex: 0 1 auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-width: 700px;
    margin: 0 auto;
    width: 100%;
    padding-bottom: 10px;
}

/* Zone styles */
.cycle-zone {
    border: 3px solid;
    padding: 10px;
    position: relative;
}

.zone-label {
    position: absolute;
    top: -10px;
    left: 10px;
    background: var(--bg-dark);
    padding: 0 6px;
    font-size: 9px;
    color: var(--pixel-white);
}

.sky-zone {
    border-color: var(--pixel-blue);
    background: linear-gradient(180deg, rgba(65, 166, 246, 0.2) 0%, rgba(65, 166, 246, 0.05) 100%);
    text-align: center;
}

.soil-zone {
    border-color: var(--pixel-brown-light);
    background: linear-gradient(180deg, rgba(120, 53, 15, 0.3) 0%, rgba(69, 26, 3, 0.3) 100%);
}

/* Node styles */
.cycle-node {
    display: inline-block;
    background: var(--bg-medium);
    border: 3px solid var(--pixel-white);
    padding: 8px 12px;
    text-align: center;
    position: relative;
}

.node-icon {
    font-size: 16px;
    margin-bottom: 2px;
}

.node-name {
    font-size: 10px;
    color: var(--pixel-white);
    font-weight: bold;
}

.node-desc {
    font-size: 8px;
    color: #888;
    margin-top: 4px;
    line-height: 1.4;
}

.node-tag {
    font-size: 7px;
    padding: 3px 5px;
    margin-top: 5px;
    display: inline-block;
}

.node-tag.good {
    background: var(--pixel-green);
    color: var(--pixel-black);
}

.node-tag.warning {
    background: var(--pixel-orange);
    color: var(--pixel-black);
    animation: blink 0.5s infinite;
}

.node-tag.bad {
    background: var(--pixel-red);
    color: var(--pixel-white);
    animation: blink 0.5s infinite;
}

.node-tag.plant {
    background: var(--pixel-yellow);
    color: var(--pixel-black);
}

/* Specific node colors */
.n2-node { border-color: #00d4ff; }
.n2-node .node-icon { color: #00d4ff; }

.nh4-node { border-color: #00ff88; }
.nh4-node .node-icon { color: #00ff88; }

.no2-node { border-color: #ff6600; }
.no2-node .node-icon { color: #ff6600; }

.no3-node { border-color: #88ff00; }
.no3-node .node-icon { color: #88ff00; }

.organic-node { border-color: #aa7744; }
.organic-node .node-icon { color: #aa7744; }

.plant-node {
    border-color: var(--pixel-green);
    background: linear-gradient(180deg, var(--pixel-green) 0%, #166534 100%);
}
.plant-node .node-icon { color: #ffffff; font-size: 20px; }
.plant-node .node-name { color: #ffffff; }
.plant-node .node-desc { color: #bbffbb; }

.n2o-node { border-color: #ff0044; }
.n2o-node .node-icon { color: #ff0044; }

.leach-node { border-color: #ff00ff; }
.leach-node .node-icon { color: #ff00ff; }

/* Arrow styles */
.cycle-arrow-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 6px;
}

.arrow-down-left {
    flex-direction: column;
}

.arrow-line {
    width: 4px;
    height: 20px;
    background: var(--pixel-yellow);
}

.arrow-head {
    color: var(--pixel-yellow);
    font-size: 14px;
    line-height: 1;
}

.arrow-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-left: 10px;
}

.process-name {
    font-size: 8px;
    color: var(--pixel-yellow);
    background: var(--pixel-black);
    padding: 2px 6px;
    border: 2px solid var(--pixel-yellow);
}

.bacteria-name {
    font-size: 8px;
    color: var(--pixel-cyan);
    margin-top: 3px;
}

/* Soil cycle row */
.soil-cycle-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
}

.inline-arrow {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.arrow-symbols {
    font-size: 12px;
    color: var(--pixel-orange);
    animation: flow 1s infinite;
}

@keyframes flow {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.arrow-text {
    font-size: 8px;
    color: var(--pixel-cyan);
    margin-top: 2px;
}

.process-label {
    text-align: center;
    font-size: 9px;
    color: var(--pixel-orange);
    margin-top: 8px;
    padding: 6px;
    border-top: 1px dashed var(--pixel-orange);
}

/* Side processes */
.side-processes {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    flex-wrap: wrap;
}

.side-process {
    flex: 1;
    min-width: 120px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.left-process {
    border: 2px dashed var(--pixel-green);
    padding: 10px;
    background: rgba(56, 183, 100, 0.1);
}

.right-process {
    border: 2px dashed var(--pixel-red);
    padding: 10px;
    background: rgba(228, 59, 68, 0.1);
}

.vertical-arrow {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--pixel-yellow);
    font-size: 12px;
    padding: 4px 0;
}

.vertical-arrow.up span:first-child {
    animation: arrow-pulse-up 0.8s ease-in-out infinite;
}

.vertical-arrow.down span:last-child {
    animation: arrow-pulse-down 0.8s ease-in-out infinite;
}

@keyframes arrow-pulse-up {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-3px); }
}

@keyframes arrow-pulse-down {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(3px); }
}

.v-arrow-text {
    font-size: 8px;
    color: var(--pixel-cyan);
}

.curved-arrow-label {
    font-size: 8px;
    color: var(--pixel-brown-light);
    text-align: center;
    border: 1px solid var(--pixel-brown-light);
    padding: 5px;
    margin-top: 4px;
    line-height: 1.4;
}

.bacteria-small {
    display: block;
    font-size: 8px;
    color: var(--pixel-cyan);
}

/* Loss section */
.loss-section {
    width: 100%;
}

.loss-title {
    font-size: 10px;
    color: var(--pixel-red);
    text-align: center;
    margin-bottom: 8px;
    animation: blink 1s infinite;
}

.loss-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    margin-bottom: 10px;
}

.loss-arrow {
    font-size: 8px;
    color: var(--pixel-red);
    line-height: 1.4;
}

.cycle-node.small {
    padding: 7px 10px;
}

.cycle-node.small .node-icon {
    font-size: 14px;
}

.cycle-node.small .node-name {
    font-size: 9px;
}

.cycle-node.small .node-desc {
    font-size: 7px;
    line-height: 1.4;
}

.cycle-node.small .node-tag {
    font-size: 7px;
}

/* Decompose label */
.decompose-label {
    font-size: 9px;
    color: var(--pixel-brown-light);
    background: var(--pixel-black);
    padding: 4px 8px;
    border: 1px solid var(--pixel-brown-light);
}

/* Plant uptake section */
.plant-uptake-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 8px 0;
}

.uptake-arrows {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 4px;
}

.uptake-label {
    font-size: 9px;
    color: var(--pixel-green);
}

.uptake-text {
    font-size: 8px;
    color: var(--pixel-cyan);
    margin-top: 3px;
}

/* Center process - Denitrification */
.center-process {
    border: 2px dashed var(--pixel-purple);
    padding: 10px;
    background: rgba(181, 80, 136, 0.1);
}

.denitrify-section {
    text-align: center;
}

.denitrify-title {
    font-size: 10px;
    color: var(--pixel-purple);
    margin-bottom: 6px;
}

.denitrify-desc {
    font-size: 9px;
    color: var(--pixel-white);
    margin-bottom: 6px;
}

.denitrify-bacteria {
    font-size: 8px;
    color: var(--pixel-cyan);
}

.denitrify-condition {
    font-size: 8px;
    color: var(--pixel-orange);
    margin-top: 4px;
}

.denitrify-arrows {
    margin-top: 8px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.denitrify-path {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 3px 6px;
}

.good-path {
    background: rgba(56, 183, 100, 0.3);
    border: 1px solid var(--pixel-green);
}

.good-path .path-arrow {
    color: var(--pixel-green);
}

.good-path .path-label {
    font-size: 8px;
    color: var(--pixel-green-light);
}

.bad-path {
    background: rgba(228, 59, 68, 0.3);
    border: 1px solid var(--pixel-red);
    animation: blink 1s infinite;
}

.bad-path .path-arrow {
    color: var(--pixel-red);
}

.bad-path .path-label {
    font-size: 8px;
    color: var(--pixel-red);
}

.path-arrow {
    font-size: 10px;
    animation: bounce 0.5s ease-in-out infinite alternate;
}

@keyframes bounce {
    from { transform: translateX(0); }
    to { transform: translateX(3px); }
}

/* Return arrow to atmosphere */
.return-arrow-section {
    text-align: center;
    margin: 8px 0;
}

.return-arrow {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.return-line {
    font-size: 14px;
    color: var(--pixel-blue);
    animation: float-up 1s ease-in-out infinite;
}

@keyframes float-up {
    0%, 100% { transform: translateY(0); opacity: 1; }
    50% { transform: translateY(-5px); opacity: 0.6; }
}

.return-label {
    font-size: 9px;
    color: var(--pixel-blue);
    margin-top: 4px;
}

/* Legend section */
.cycle-legend {
    background: var(--bg-dark);
    border: 2px solid var(--pixel-purple);
    padding: 8px;
    margin-top: 8px;
}

.legend-title {
    font-size: 10px;
    color: var(--pixel-purple);
    text-align: center;
    margin-bottom: 8px;
    border-bottom: 1px dashed var(--pixel-purple);
    padding-bottom: 6px;
}

.legend-items {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 8px;
    line-height: 1.5;
}

.legend-icon {
    font-size: 14px;
    flex-shrink: 0;
}

.legend-icon.rhizobium { filter: hue-rotate(120deg); }
.legend-icon.nitrosomonas { filter: hue-rotate(30deg); }
.legend-icon.nitrobacter { filter: hue-rotate(60deg); }
.legend-icon.pseudomonas { filter: hue-rotate(270deg); }

.legend-text {
    color: var(--pixel-white);
}

.legend-text strong {
    color: var(--pixel-cyan);
}

/* Tips section */
.cycle-tips {
    background: var(--bg-medium);
    border: 2px solid var(--pixel-cyan);
    padding: 8px;
    margin-top: 8px;
}

.tips-title {
    font-size: 10px;
    color: var(--pixel-yellow);
    text-align: center;
    margin-bottom: 8px;
    border-bottom: 1px dashed var(--pixel-yellow);
    padding-bottom: 6px;
}

.tip {
    font-size: 9px;
    color: var(--pixel-white);
    margin-bottom: 6px;
    padding: 4px 6px;
    line-height: 1.6;
}

.tip strong {
    color: var(--pixel-yellow);
}

.tip.warning-tip {
    background: rgba(228, 59, 68, 0.2);
    border-left: 2px solid var(--pixel-red);
    color: var(--pixel-orange);
}

/* Close button */
.close-btn {
    font-family: 'Press Start 2P', monospace;
    font-size: 9px;
    padding: 10px 20px;
    background: var(--pixel-red);
    color: var(--pixel-white);
    border: 3px solid var(--pixel-black);
    cursor: pointer;
    margin: 10px auto;
    display: block;
    box-shadow: 0 4px 0 var(--pixel-black);
    transition: transform 0.1s;
    position: relative;
    z-index: 200;
}

.close-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 0 var(--pixel-black);
    background: #ff5555;
}

.close-btn:active {
    transform: translateY(2px);
    box-shadow: 0 2px 0 var(--pixel-black);
}

/* Specific style for cycle diagram close button */
#close-diagram {
    font-size: 10px;
    padding: 12px 30px;
    margin-top: 15px;
    background: linear-gradient(180deg, var(--pixel-red) 0%, #a02030 100%);
    border: 4px solid var(--pixel-black);
    box-shadow:
        inset -3px -3px 0 0 #0006,
        inset 3px 3px 0 0 #fff3,
        0 5px 0 0 var(--pixel-black);
}

#close-diagram:hover {
    background: linear-gradient(180deg, #ff5555 0%, var(--pixel-red) 100%);
}

/* Top close button - always visible */
.close-btn.top-close {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 8px 12px;
    font-size: 12px;
    margin: 0;
    z-index: 300;
}

/* ========== INFO POPUP ========== */
#info-popup {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 600;
}

#info-popup.hidden {
    display: none;
}

.info-content {
    background: var(--bg-medium);
    border: var(--pixel-border) var(--pixel-cyan);
    padding: 24px;
    text-align: center;
    max-width: 320px;
    animation: popup 0.3s ease;
}

.info-formula {
    font-size: 22px;
    color: var(--pixel-cyan);
    margin-bottom: 8px;
}

.info-name {
    font-size: 12px;
    color: var(--pixel-yellow);
    margin-bottom: 12px;
}

.info-desc {
    font-size: 10px;
    line-height: 1.8;
    color: var(--pixel-white);
    margin-bottom: 16px;
}

.action-btn.orange {
    background: linear-gradient(180deg, var(--pixel-orange) 0%, #c45a10 100%);
}

.action-btn.red {
    background: linear-gradient(180deg, var(--pixel-red) 0%, #a02030 100%);
}

.btn-formula {
    display: block;
    font-size: 9px;
}

.btn-label {
    display: block;
    font-size: 8px;
    margin-top: 2px;
}

.btn-bacteria {
    display: block;
    font-size: 6px;
    color: #aaa;
    margin-top: 2px;
}

/* (Day timer bar removed — sun/moon position in the canvas conveys
   day progress, freeing this row for the shop layout.) */

/* ============= LEADERBOARD ============= */
#name-modal,
#leaderboard-modal {
    position: fixed;
    inset: 0;
    z-index: 3000;
    background: rgba(0, 0, 0, 0.78);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

#name-modal.hidden,
#leaderboard-modal.hidden { display: none; }

/* ----- Name entry modal ----- */
#name-modal-content {
    background: var(--bg-dark);
    border: 4px solid var(--pixel-yellow);
    box-shadow:
        0 6px 0 0 var(--pixel-black),
        inset -3px -3px 0 0 #0006,
        inset 3px 3px 0 0 #fff2;
    padding: 28px 28px 20px;
    width: min(420px, 92vw);
    text-align: center;
}

.name-modal-title {
    font-size: 16px;
    color: var(--pixel-yellow);
    text-shadow: 2px 2px 0 var(--pixel-black);
    letter-spacing: 2px;
    margin-bottom: 8px;
}

.name-modal-sub {
    font-size: 9px;
    color: var(--pixel-white);
    margin-bottom: 16px;
    line-height: 1.6;
}

#name-input {
    font-family: 'Press Start 2P', monospace;
    font-size: 14px;
    padding: 12px;
    width: 100%;
    background: var(--pixel-black);
    color: var(--pixel-green-light);
    border: 3px solid var(--pixel-white);
    text-align: center;
    box-sizing: border-box;
    outline: none;
}

#name-input:focus {
    border-color: var(--pixel-yellow);
    background: #000;
}

.name-modal-error {
    font-size: 8px;
    color: var(--pixel-red);
    min-height: 12px;
    margin: 8px 0 12px;
}

.name-modal-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-top: 4px;
}

.name-modal-btn {
    font-family: 'Press Start 2P', monospace;
    font-size: 9px;
    padding: 12px 18px;
    border: 3px solid var(--pixel-white);
    background: var(--pixel-black);
    color: var(--pixel-white);
    cursor: pointer;
    transition: transform 0.05s;
}

.name-modal-btn:hover { transform: translateY(-1px); }
.name-modal-btn:active { transform: translateY(1px); }

.name-modal-btn.primary {
    background: var(--pixel-green);
    color: var(--pixel-black);
    border-color: var(--pixel-green-light);
}

.name-modal-btn.skip { color: #aaa; }

/* ----- Leaderboard modal ----- */
#leaderboard-content {
    background: var(--bg-dark);
    border: 4px solid var(--pixel-yellow);
    box-shadow:
        0 6px 0 0 var(--pixel-black),
        inset -3px -3px 0 0 #0006,
        inset 3px 3px 0 0 #fff2;
    width: min(560px, 94vw);
    max-height: 84vh;
    display: flex;
    flex-direction: column;
}

.lb-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 3px solid var(--pixel-black);
    background: linear-gradient(180deg, var(--pixel-blue-dark) 0%, var(--pixel-blue) 100%);
}

.lb-title {
    font-size: 14px;
    color: var(--pixel-yellow);
    text-shadow: 2px 2px 0 var(--pixel-black);
    letter-spacing: 2px;
}

.lb-close {
    font-family: 'Press Start 2P', monospace;
    font-size: 12px;
    background: var(--pixel-red);
    color: var(--pixel-white);
    border: 2px solid var(--pixel-white);
    padding: 4px 8px;
    cursor: pointer;
}
.lb-close:hover { background: #ff5b66; }

.lb-tabs {
    display: flex;
    gap: 0;
    border-bottom: 3px solid var(--pixel-black);
    background: var(--bg-medium);
}

.lb-tab {
    flex: 1;
    font-family: 'Press Start 2P', monospace;
    font-size: 9px;
    padding: 12px 6px;
    background: transparent;
    color: #888;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    transition: color 0.1s, background 0.1s, border-color 0.1s;
}

.lb-tab:hover {
    color: var(--pixel-white);
    background: rgba(255, 255, 255, 0.04);
}

.lb-tab.active {
    color: var(--pixel-yellow);
    border-bottom-color: var(--pixel-yellow);
    background: rgba(254, 174, 52, 0.08);
}

.lb-body {
    overflow-y: auto;
    padding: 16px 20px;
    min-height: 200px;
}

.lb-status {
    text-align: center;
    color: #888;
    font-size: 10px;
    padding: 40px 12px;
    line-height: 1.6;
}

.lb-status.error { color: var(--pixel-red); }

.lb-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 9px;
}

.lb-table.hidden { display: none; }

.lb-table thead th {
    color: var(--pixel-cyan);
    text-align: left;
    padding: 6px 8px;
    border-bottom: 2px solid var(--pixel-black);
    font-weight: normal;
}

.lb-table tbody td {
    padding: 8px;
    border-bottom: 1px solid #2a2d3a;
    color: var(--pixel-white);
}

.lb-table .lb-col-rank { width: 36px; color: var(--pixel-yellow); }
.lb-table .lb-col-name { word-break: break-word; }
.lb-table .lb-col-score,
.lb-table .lb-col-days { text-align: right; width: 70px; }

.lb-table tbody tr.you {
    background: rgba(254, 174, 52, 0.16);
    outline: 2px solid var(--pixel-yellow);
}
.lb-table tbody tr.you td { color: var(--pixel-yellow); }

.lb-table tbody tr:nth-child(1) td.lb-col-rank { color: #ffd700; font-size: 14px; }
.lb-table tbody tr:nth-child(2) td.lb-col-rank { color: #c0c0c0; font-size: 14px; }
.lb-table tbody tr:nth-child(3) td.lb-col-rank { color: #cd7f32; font-size: 14px; }

/* Winner rows get a subtle green tint */
.lb-table tbody tr.lb-winner {
    background: rgba(56, 183, 100, 0.10);
}
.lb-won-badge {
    font-size: 10px;
    margin-left: 3px;
    vertical-align: middle;
}

#overlay-actions {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 8px;
}

/* Footer inside the leaderboard modal — shown only when the current
   player's score qualifies for #1 on the active tab. */
.lb-footer {
    padding: 14px 20px 18px;
    border-top: 3px solid var(--pixel-black);
    background: rgba(254, 174, 52, 0.08);
    text-align: center;
}
.lb-footer.hidden { display: none; }
.lb-footer-note {
    font-size: 8px;
    color: var(--pixel-yellow);
    line-height: 1.6;
    margin-bottom: 10px;
}
#lb-claim-top {
    font-size: 10px;
    padding: 10px 16px;
}

/* Secondary game-over buttons — match PLAY AGAIN's pixel-art
   treatment but at a smaller size so PLAY AGAIN remains the primary CTA. */
#btn-save-score,
#btn-view-leaderboard {
    font-family: 'Press Start 2P', monospace;
    font-size: 10px;
    padding: 12px 20px;
    color: var(--pixel-black);
    border: 3px solid var(--pixel-black);
    cursor: pointer;
    box-shadow:
        inset -3px -3px 0 0 #0006,
        inset 3px 3px 0 0 #fff4,
        0 3px 0 0 var(--pixel-black);
    transition: transform 0.1s;
}

#btn-save-score {
    background: linear-gradient(180deg, var(--pixel-yellow) 0%, #c08a1e 100%);
}

#btn-view-leaderboard {
    background: linear-gradient(180deg, var(--pixel-cyan) 0%, #2a9aa8 100%);
}

#btn-save-score:hover,
#btn-view-leaderboard:hover {
    transform: translateY(-2px);
    box-shadow:
        inset -3px -3px 0 0 #0006,
        inset 3px 3px 0 0 #fff4,
        0 5px 0 0 var(--pixel-black);
}

#btn-save-score:active,
#btn-view-leaderboard:active {
    transform: translateY(2px);
    box-shadow:
        inset -3px -3px 0 0 #0006,
        inset 3px 3px 0 0 #fff4,
        0 1px 0 0 var(--pixel-black);
}

@media (max-width: 480px) {
    .lb-title { font-size: 11px; }
    .lb-tab { font-size: 7px; padding: 10px 4px; }
    .lb-table { font-size: 8px; }
    .name-modal-title { font-size: 13px; }
    #name-input { font-size: 12px; padding: 10px; }
    .name-modal-btn { font-size: 8px; padding: 10px 12px; }
}

/* ========== COOLDOWN OVERLAY ========== */
.action-btn {
    --cooldown-pct: 0;
}

.action-btn::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: calc(var(--cooldown-pct) * 1%);
    background: rgba(0, 0, 0, 0.6);
    pointer-events: none;
    transition: height 0.1s linear;
}

.action-btn.on-cooldown {
    cursor: wait;
}

/* ========== ATMOSPHERE & WATER STATUS PANELS ========== */
#danger-indicators {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
    margin-bottom: 6px;
}

#danger-indicators .danger-card {
    margin-bottom: 0;
}

#atmo-status-card .panel-title {
    color: var(--pixel-cyan);
    border-bottom-color: var(--pixel-cyan);
}

#water-status-card .panel-title {
    color: var(--pixel-blue);
    border-bottom-color: var(--pixel-blue);
}

.status-bar-track {
    height: 12px;
    background: var(--pixel-black);
    border: 2px solid #333;
    position: relative;
    overflow: hidden;
}

.status-bar-fill {
    height: 100%;
    width: 0%;
    transition: width 0.3s steps(10);
}

.status-bar-track.atmo .status-bar-fill {
    background: var(--pixel-green);
}

.status-bar-track.water .status-bar-fill {
    background: var(--pixel-blue);
}

.status-quality {
    font-size: 9px;
    text-align: center;
    margin-top: 4px;
    color: var(--pixel-green-light);
}

.status-quality.clean { color: var(--pixel-green-light); }
.status-quality.hazy, .status-quality.murky { color: var(--pixel-yellow); }
.status-quality.smoggy, .status-quality.algae-bloom { color: var(--pixel-orange); }
.status-quality.critical, .status-quality.dead-zone {
    color: var(--pixel-red);
    animation: blink 0.5s steps(2) infinite;
}

/* Status bar color overrides by quality */
.status-bar-track.atmo.hazy .status-bar-fill { background: var(--pixel-yellow); }
.status-bar-track.atmo.smoggy .status-bar-fill { background: var(--pixel-orange); }
.status-bar-track.atmo.critical .status-bar-fill { background: var(--pixel-red); }

.status-bar-track.water.murky .status-bar-fill { background: var(--pixel-yellow); }
.status-bar-track.water.algae-bloom .status-bar-fill { background: var(--pixel-orange); }
.status-bar-track.water.dead-zone .status-bar-fill { background: var(--pixel-purple); }

/* ========== PLANT INFO ========== */
#plant-n-absorbed {
    font-size: 9px;
    margin-top: 8px;
    color: var(--pixel-white);
}

#plant-n-absorbed span {
    color: var(--pixel-green-light);
}

/* ========== INFO BUTTON ========== */
.info-btn {
    font-family: 'Press Start 2P', monospace;
    font-size: 9px;
    padding: 10px;
    background: var(--pixel-blue-dark);
    color: var(--pixel-white);
    border: 2px solid var(--pixel-black);
    cursor: pointer;
    width: 100%;
    margin-top: 8px;
}

.info-btn:hover {
    background: var(--pixel-blue);
}

/* ========== MONEY DISPLAY ========== */
.money-box {
    background: linear-gradient(180deg, #ffd700 0%, #b8860b 100%) !important;
    color: var(--pixel-black) !important;
    border-color: #8b6914 !important;
}

.money-box span {
    color: var(--pixel-black) !important;
    font-weight: bold;
}

/* ========== THERMOMETER ========== */
#thermometer-card {
    background: var(--bg-medium);
}

#thermometer-card .panel-title {
    color: var(--pixel-orange);
    border-bottom-color: var(--pixel-orange);
}

#thermometer {
    display: flex;
    align-items: stretch;
    gap: 6px;
    height: 80px;
    padding: 4px 0;
}

#thermometer-track {
    width: 20px;
    background: var(--pixel-black);
    border: 2px solid var(--pixel-white);
    position: relative;
    overflow: hidden;
    flex-shrink: 0;
}

#thermometer-fill {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 16%;
    transition: height 0.5s steps(10);
}

#thermometer-fill.cold {
    background: linear-gradient(0deg, #4488ff 0%, #66aaff 100%);
}

#thermometer-fill.normal {
    background: linear-gradient(0deg, #44bb44 0%, #66dd66 100%);
}

#thermometer-fill.warm {
    background: linear-gradient(0deg, #dddd00 0%, #ffff44 100%);
}

#thermometer-fill.hot {
    background: linear-gradient(0deg, #ff8800 0%, #ffaa44 100%);
    animation: health-flash 0.8s ease-in-out infinite;
}

#thermometer-fill.extreme {
    background: linear-gradient(0deg, #ff0000 0%, #ff4444 100%);
    animation: health-flash 0.3s ease-in-out infinite;
}

#thermometer-labels {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    font-size: 5px;
    color: #888;
    padding: 2px 0;
}

.thermo-label.extreme { color: var(--pixel-red); }
.thermo-label.hot { color: var(--pixel-orange); }
.thermo-label.warm { color: var(--pixel-yellow); }
.thermo-label.normal { color: var(--pixel-green); }

#temp-value {
    font-size: 11px;
    text-align: center;
    margin-top: 4px;
    color: var(--pixel-orange);
}

/* ========== SHOP BUTTONS ========== */
#shop-buttons {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 8px;
    padding: 4px 0;
}

.shop-label {
    font-size: 9px;
    color: #ffd700;
    min-width: 36px;
    text-shadow: 1px 1px 0 var(--pixel-black);
}

.shop-btn {
    font-family: 'Press Start 2P', monospace;
    font-size: 7px;
    padding: 7px 10px;
    background: linear-gradient(180deg, #ffd700 0%, #b8860b 100%);
    color: var(--pixel-black);
    border: 2px solid #8b6914;
    cursor: pointer;
    text-align: center;
    transition: transform 0.1s;
    box-shadow:
        inset -2px -2px 0 0 #0004,
        inset 2px 2px 0 0 #fff4,
        0 2px 0 0 var(--pixel-black);
}

.shop-btn:hover {
    transform: translateY(-1px);
    background: linear-gradient(180deg, #ffe44d 0%, #daa520 100%);
    box-shadow:
        inset -2px -2px 0 0 #0004,
        inset 2px 2px 0 0 #fff4,
        0 4px 0 0 var(--pixel-black);
}

.shop-btn:active {
    transform: translateY(1px);
    box-shadow:
        inset -2px -2px 0 0 #0004,
        inset 2px 2px 0 0 #fff4,
        0 1px 0 0 var(--pixel-black);
}

.shop-btn:disabled {
    background: #555;
    color: #888;
    border-color: #444;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.shop-cost {
    display: block;
    font-size: 9px;
    color: #4a3000;
}

.shop-name {
    display: block;
    font-size: 6px;
    margin-top: 2px;
}

/* ========== KEYBOARD HINTS ========== */
.key-hint {
    position: absolute;
    top: 3px;
    left: 5px;
    font-size: 7px;
    color: rgba(255,255,255,0.35);
    pointer-events: none;
    line-height: 1;
}

/* ========== COOLDOWN TIMER TEXT ========== */
.cd-timer {
    position: absolute;
    bottom: 3px;
    right: 5px;
    font-size: 7px;
    color: var(--pixel-yellow);
    pointer-events: none;
    line-height: 1;
}

.action-btn.ready-flash {
    animation: ready-pulse 0.4s ease;
}

@keyframes ready-pulse {
    0% { box-shadow: 0 0 0 0 rgba(167,240,112,0.8), inset -3px -3px 0 0 #0006, inset 3px 3px 0 0 #fff3, 0 3px 0 0 var(--pixel-black); }
    100% { box-shadow: 0 0 0 12px rgba(167,240,112,0), inset -3px -3px 0 0 #0006, inset 3px 3px 0 0 #fff3, 0 3px 0 0 var(--pixel-black); }
}

/* ========== FLOATING FEEDBACK NUMBERS ========== */
#floating-nums {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 550;
}

.floating-num {
    position: absolute;
    font-family: 'Press Start 2P', monospace;
    font-size: 10px;
    pointer-events: none;
    text-shadow: 2px 2px 0 var(--pixel-black), -1px -1px 0 var(--pixel-black);
    animation: float-num-up 1.5s ease-out forwards;
    white-space: nowrap;
}
.floating-num.good { color: var(--pixel-green-light); }
.floating-num.bad { color: var(--pixel-red); }
.floating-num.neutral { color: var(--pixel-yellow); }
.floating-num.warning { color: var(--pixel-orange); }

@keyframes float-num-up {
    0% { transform: translateY(0) scale(1.2); opacity: 1; }
    20% { transform: translateY(-10px) scale(1); opacity: 1; }
    100% { transform: translateY(-60px) scale(0.8); opacity: 0; }
}

/* ========== COMMENTARY TOAST (funny quips) ========== */
#commentary-toast {
    position: fixed;
    bottom: 80px;
    right: -340px;
    max-width: 280px;
    padding: 10px 14px;
    font-family: 'Press Start 2P', monospace;
    font-size: 8px;
    line-height: 1.6;
    color: var(--pixel-white);
    background: var(--bg-dark);
    border: 2px solid var(--pixel-yellow);
    box-shadow: 0 3px 0 0 var(--pixel-black), 0 0 12px rgba(254,174,52,0.2);
    z-index: 560;
    pointer-events: none;
    transition: right 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}
#commentary-toast.show {
    right: 12px;
}
#commentary-toast.warning {
    border-color: var(--pixel-orange);
    box-shadow: 0 3px 0 0 var(--pixel-black), 0 0 12px rgba(254,174,52,0.3);
}
#commentary-toast.bad {
    border-color: var(--pixel-red);
    box-shadow: 0 3px 0 0 var(--pixel-black), 0 0 12px rgba(228,59,68,0.3);
}
#commentary-toast.good {
    border-color: var(--pixel-green);
    box-shadow: 0 3px 0 0 var(--pixel-black), 0 0 12px rgba(56,183,100,0.3);
}
@media (max-width: 480px) {
    #commentary-toast {
        max-width: 220px;
        font-size: 7px;
        padding: 8px 10px;
        bottom: 60px;
    }
}

/* ========== CUSTOM TOOLTIP ========== */
/* ========== TUTORIAL ========== */
#tutorial-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 900;
    pointer-events: none;
}

#tutorial-overlay.hidden {
    display: none;
}

#tutorial-dialog {
    position: fixed;
    background: var(--bg-dark);
    border: 3px solid var(--pixel-yellow);
    padding: 16px 20px;
    max-width: 310px;
    z-index: 950;
    pointer-events: all;
    box-shadow: 0 4px 0 0 var(--pixel-black), 0 0 20px rgba(254,174,52,0.3);
}

#tutorial-text {
    font-size: 8px;
    line-height: 2;
    color: var(--pixel-white);
    margin-bottom: 12px;
}

#tutorial-buttons {
    display: flex;
    gap: 8px;
    justify-content: center;
}

.tutorial-btn {
    font-family: 'Press Start 2P', monospace;
    font-size: 8px;
    padding: 8px 16px;
    background: var(--pixel-green);
    color: var(--pixel-black);
    border: 2px solid var(--pixel-black);
    cursor: pointer;
    box-shadow: 0 2px 0 0 var(--pixel-black);
}

.tutorial-btn:hover {
    background: var(--pixel-green-light);
}

.tutorial-btn.skip {
    background: var(--bg-light);
    color: var(--pixel-white);
}

.tutorial-btn.skip:hover {
    background: #555;
}

.tutorial-highlight {
    position: relative;
    z-index: 910;
    box-shadow: 0 0 0 3px var(--pixel-yellow), 0 0 15px var(--pixel-yellow) !important;
    animation: tutorial-glow 1s ease-in-out infinite alternate;
}

@keyframes tutorial-glow {
    from { box-shadow: 0 0 0 3px var(--pixel-yellow), 0 0 10px var(--pixel-yellow); }
    to { box-shadow: 0 0 0 3px var(--pixel-yellow), 0 0 25px var(--pixel-yellow); }
}

/* ========== ACHIEVEMENT BANNER ========== */
#achievement-banner {
    position: fixed;
    top: -60px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(180deg, #ffd700 0%, #b8860b 100%);
    color: var(--pixel-black);
    padding: 10px 24px;
    border: 3px solid var(--pixel-black);
    z-index: 950;
    text-align: center;
    transition: top 0.4s ease;
    box-shadow: 0 4px 0 0 var(--pixel-black);
}

#achievement-banner.show {
    top: 12px;
}

#achievement-banner .ach-title {
    font-size: 7px;
    color: #4a3000;
}

#achievement-banner .ach-name {
    font-size: 10px;
    margin-top: 2px;
}

#tooltip {
    position: fixed;
    background: var(--bg-dark);
    border: 2px solid var(--pixel-cyan);
    padding: 8px 10px;
    font-family: 'Press Start 2P', monospace;
    font-size: 7px;
    color: var(--pixel-white);
    max-width: 220px;
    z-index: 800;
    pointer-events: none;
    display: none;
    line-height: 1.8;
    box-shadow: 0 4px 0 0 var(--pixel-black), 0 0 10px rgba(115,239,247,0.3);
}

/* ========== RESPONSIVE LAYOUT ========== */

/* Hide mobile-only toggle buttons on desktop by default */
.mobile-only { display: none; }

/* Tablet */
@media (max-width: 1024px) {
    #game-main {
        grid-template-columns: 200px 1fr 180px;
    }
    .action-btn {
        padding: 8px 4px;
        font-size: 8px;
    }
    .btn-formula { font-size: 8px; }
    .btn-label { font-size: 7px; }
    .btn-bacteria { font-size: 5px; }
    .shop-btn {
        padding: 5px 8px;
        font-size: 6px;
    }
    #game-header h1 { font-size: 14px; }
    .stat-box { padding: 4px 10px; font-size: 10px; }
}

/* Small tablet / large phone landscape */
@media (max-width: 768px) {
    /* Canvas goes full-width; panels become slide-in drawers */
    #game-main {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr;
    }
    #center-panel {
        grid-column: 1;
        grid-row: 1;
    }
    #left-panel, #right-panel {
        position: fixed;
        top: 0;
        bottom: 0;
        z-index: 200;
        width: min(78vw, 320px);
        padding: 60px 10px 90px;
        background: var(--bg-dark);
        border: 4px solid var(--pixel-black);
        overflow-y: auto;
        transition: transform 0.2s ease-out;
        box-shadow: 0 0 0 1000px rgba(0, 0, 0, 0.55);
    }
    #left-panel {
        left: 0;
        transform: translateX(-110%);
    }
    #right-panel {
        right: 0;
        transform: translateX(110%);
    }
    #left-panel.open { transform: translateX(0); }
    #right-panel.open { transform: translateX(0); }
    /* Remove shadow/backdrop when closed */
    #left-panel:not(.open),
    #right-panel:not(.open) {
        box-shadow: none;
        pointer-events: none;
    }
    #canvas-container {
        min-height: 240px;
        max-height: 60vh;
    }
    #action-panel {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        z-index: 100;
        background: var(--bg-medium);
        border-top: 3px solid var(--pixel-black);
    }
    #action-buttons {
        grid-template-columns: repeat(6, 1fr);
        gap: 3px;
    }
    .action-btn {
        padding: 6px 2px;
        font-size: 7px;
        touch-action: manipulation;
    }
    .key-hint { display: none; }
    .cd-timer { font-size: 6px; }
    #game-header {
        /* Right padding leaves room for the floating #lang-toggle */
        padding: 4px 80px 4px 8px;
        flex-wrap: wrap;
        gap: 4px;
    }
    #game-header h1 { font-size: 12px; }
    .stat-box { padding: 3px 8px; font-size: 9px; }
    .icon-btn {
        padding: 6px 8px;
        font-size: 8px;
        touch-action: manipulation;
    }
    .mobile-only { display: inline-block; }
    .mobile-only.active {
        background: var(--pixel-green);
        color: var(--pixel-black);
    }
    .diff-buttons { flex-direction: column; gap: 10px; }
    .diff-btn { min-width: 200px; padding: 14px 18px; }
    .diff-logo { font-size: 20px; }
    .diff-quickguide { max-width: 90vw; }
    .diff-actions { flex-direction: column; gap: 8px; }
    .pause-menu-btn { min-width: 220px; font-size: 9px; padding: 12px 20px; }
    /* Allow the difficulty-select screen to scroll on short phones */
    #difficulty-select {
        overflow-y: auto;
        padding: 16px 8px;
        justify-content: flex-start;
    }
    body { overflow: hidden; position: fixed; }
    html, body { overflow: hidden; position: fixed; width: 100%; height: 100%; }
    #game-container {
        position: fixed;
        inset: 0;
        padding-bottom: 72px;
    }
}

/* ========== COLORBLIND MODES ========== */
body.colorblind-deuteranopia {
    --pixel-green: #4a90d9;
    --pixel-green-light: #8ec8f0;
    --pixel-red: #d94a4a;
}

body.colorblind-protanopia {
    --pixel-green: #5ba0d0;
    --pixel-green-light: #90ccee;
    --pixel-red: #cc6600;
    --pixel-orange: #eebb00;
}

/* Phone portrait */
@media (max-width: 480px) {
    body { font-size: 10px; }
    #game-header h1 { font-size: 10px; }
    #header-stats { gap: 6px; }
    .stat-box { padding: 2px 6px; font-size: 8px; }
    /* Drawer behavior inherited from the 768px rule; keep canvas tall */
    #canvas-container {
        min-height: 200px;
        max-height: 55vh;
    }
    .panel-title { font-size: 8px; }
    .pool-value { font-size: 8px; }
    .pool-formula { font-size: 8px; }
    .pool-name { font-size: 6px; }
    #action-buttons {
        grid-template-columns: repeat(3, 1fr);
        gap: 3px;
    }
    .btn-formula { font-size: 7px; }
    .btn-label { font-size: 6px; }
    .btn-bacteria { display: none; }
    #shop-buttons {
        flex-wrap: wrap;
        gap: 3px;
    }
    .shop-btn { font-size: 6px; padding: 4px 6px; }
    .shop-cost { font-size: 7px; }
    #header-controls { gap: 4px; }
    .icon-btn { padding: 4px 6px; font-size: 7px; }
    .diff-logo { font-size: 16px; }
    .diff-title { font-size: 10px; }
    .diff-quickguide { padding: 10px 14px; }
    .qg-title { font-size: 7px; }
    .qg-item { font-size: 6px; }
    .qg-key { font-size: 5px; min-width: 45px; }
    .pause-menu-btn { min-width: 180px; font-size: 8px; padding: 10px 16px; }
    #pause-title { font-size: 18px; }
}