/* ==========================================================================
   CROCODILE DAY ADVENTURE - STYLESHEET (ENHANCED GAMEPLAY)
   Centered Stats Header, Big Sprites, Lag-Free Tracking, Cartoon River
   ========================================================================== */

/* Design Tokens & Reset */
:root {
    --primary: #2e7d32;      /* Jungle Green */
    --primary-light: #4caf50;/* Bright Green */
    --primary-dark: #1b5e20; /* Canopy Green */
    --secondary: #0288d1;    /* River Blue */
    --secondary-light: #b3e5fc;/* Foam Blue */
    --accent: #ffb300;       /* Sun Yellow */
    --accent-coral: #ff7043; /* Coral Orange */
    --bg-mint: #e8f5e9;      
    --text-dark: #263238;    
    --text-light: #ffffff;
    --font-rounded: 'Fredoka', system-ui, -apple-system, sans-serif;
    --shadow-premium: 0 16px 36px rgba(0, 0, 0, 0.12);
    --transition-playful: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-rounded);
    background-color: #a8e6cf;
    background-image: radial-gradient(circle at 20% 30%, #dcedc1 0%, #a8e6cf 100%);
    color: var(--text-dark);
    height: 100vh;
    width: 100vw;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* App locking box */
#app-container {
    width: 100%;
    height: 100%;
    max-width: 1120px;
    max-height: 780px;
    background: linear-gradient(180deg, #e0f7fa 0%, #e8f5e9 100%);
    border: 8px solid #81c784;
    border-radius: 36px;
    box-shadow: 0 24px 60px rgba(0,0,0,0.15);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

/* Ambient animated water layer in background */
.ambient-river {
    position: absolute;
    bottom: -10%;
    left: 0;
    width: 200%;
    height: 35%;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 120' preserveAspectRatio='none'%3E%3Cpath d='M0,60 C150,90 350,30 500,60 C650,90 850,30 1000,60 C1150,90 1300,60 1400,60 L1400,120 L0,120 Z' fill='%23b2ebf2' opacity='0.5'/%3E%3Cpath d='M0,80 C200,110 400,50 600,80 C800,110 1000,50 1200,80 L1200,120 L0,120 Z' fill='%2380deea' opacity='0.3'/%3E%3C/svg%3E") repeat-x;
    animation: river-flow 16s linear infinite;
    z-index: 1;
    pointer-events: none;
}

@keyframes river-flow {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* Global Header */
#global-header {
    height: 70px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 30px;
    background: rgba(255, 255, 255, 0.65);
    backdrop-filter: blur(8px);
    border-bottom: 3px solid rgba(129, 199, 132, 0.3);
    z-index: 10;
}

.app-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-dark);
}

.audio-controls {
    display: flex;
    gap: 12px;
}

/* Bubble buttons */
.icon-btn {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    border: 3px solid #81c784;
    background: white;
    color: var(--primary);
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 6px 12px rgba(0,0,0,0.08);
    transition: var(--transition-playful);
}

.icon-btn:hover {
    transform: scale(1.15) rotate(5deg);
    background: var(--bg-mint);
}

.icon-btn:active {
    transform: scale(0.95);
}

.icon {
    width: 24px;
    height: 24px;
}

.hidden {
    display: none !important;
}

/* Main Viewport & Slide Deck */
#slide-viewport {
    flex: 1;
    position: relative;
    z-index: 2;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.5s ease, visibility 0.5s ease;
    padding: 24px 30px;
}

.slide.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

/* Slide Layouts */
.slide-content {
    width: 100%;
    height: 100%;
    display: flex;
    gap: 24px;
}

.split-layout {
    flex-direction: row;
}

.full-layout {
    flex-direction: column;
}

.visual-pane, .content-pane {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 20px;
    position: relative;
}

.justify-center {
    justify-content: center;
}

/* Glassmorphic Cards */
.glass-card {
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(12px);
    border: 4px solid white;
    border-radius: 28px;
    padding: 24px;
    box-shadow: var(--shadow-premium);
}

/* Start Scene Layout */
.start-layout {
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    gap: 28px;
}

.start-crocodile-container {
    width: 180px;
    height: 180px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.cute-croc {
    width: 100%;
    height: 100%;
    filter: drop-shadow(0 8px 16px rgba(0,0,0,0.1));
}

.animated-croc {
    animation: croc-bounce 3s ease-in-out infinite alternate;
    transform-origin: center bottom;
}

@keyframes croc-bounce {
    0% { transform: translateY(0) scaleY(1); }
    50% { transform: translateY(-10px) scaleY(1.02) rotate(2deg); }
    100% { transform: translateY(0) scaleY(1) rotate(-2deg); }
}

.start-bubble {
    max-width: 600px;
    border-color: #c8e6c9;
}

.start-bubble h2 {
    font-size: 2.2rem;
    color: var(--primary-dark);
    margin-bottom: 12px;
}

.story-text {
    font-size: 1.35rem;
    line-height: 1.6;
    color: #37474f;
    font-weight: 600;
}

/* Primary buttons with spring bounce */
.primary-btn, .pulse-btn {
    font-family: var(--font-rounded);
    font-size: 1.4rem;
    font-weight: 700;
    color: white;
    background: linear-gradient(135deg, #ff9800 0%, #ff5722 100%);
    border: 4px solid white;
    border-radius: 20px;
    padding: 16px 36px;
    cursor: pointer;
    box-shadow: 0 10px 20px rgba(255, 87, 34, 0.3);
    transition: var(--transition-playful);
}

.primary-btn:hover, .pulse-btn:hover {
    transform: scale(1.08) translateY(-3px);
    box-shadow: 0 14px 28px rgba(255, 87, 34, 0.4);
}

.primary-btn:active, .pulse-btn:active {
    transform: scale(0.95);
}

.pulse-btn {
    animation: button-pulse 2s infinite;
}

@keyframes button-pulse {
    0% { box-shadow: 0 0 0 0 rgba(255, 87, 34, 0.7); }
    70% { box-shadow: 0 0 0 15px rgba(255, 87, 34, 0); }
    100% { box-shadow: 0 0 0 0 rgba(255, 87, 34, 0); }
}

/* Scene 1: Ancient Slide Stacked Images */
.card-stack {
    width: 100%;
    height: 100%;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-frame {
    width: 70%;
    height: 75%;
    border: 6px solid white;
    border-radius: 24px;
    box-shadow: var(--shadow-premium);
    overflow: hidden;
    position: absolute;
    background: #fff;
    transition: var(--transition-playful);
}

.ancient-landscape {
    transform: rotate(-6deg) translate(-20px, -10px);
    z-index: 1;
}

.ancient-fossil {
    transform: rotate(6deg) translate(20px, 10px);
    z-index: 2;
}

.image-frame:hover {
    z-index: 10;
    transform: scale(1.05) rotate(0deg);
}

.story-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.image-badge {
    position: absolute;
    bottom: 12px;
    right: 12px;
    background: rgba(46, 125, 50, 0.9);
    color: white;
    padding: 6px 14px;
    font-size: 0.9rem;
    font-weight: 700;
    border-radius: 12px;
    border: 2px solid white;
}

.title-card {
    border-color: var(--primary-light);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.slide-title-large {
    font-size: 2rem;
    color: var(--primary-dark);
}

/* Scene 2: Simple Picture Exploration Map */
.exploration-area {
    width: 100%;
    height: 100%;
    flex: 1;
    position: relative;
    border-radius: 28px;
    border: 6px solid white;
    box-shadow: var(--shadow-premium);
    overflow: hidden;
    background: white;
}

.bg-river-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background-color: #f0fdf4; /* Light green background to stand out */
}

.clean-image-label {
    position: absolute;
    bottom: 20px;
    right: 20px;
    background: rgba(0, 0, 0, 0.65);
    color: white;
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 1.25rem;
    font-weight: 600;
    pointer-events: none;
    z-index: 3;
}

/* Scene 3: Clean River Rescue Canvas Layout */
.game-layout {
    flex-direction: column;
}

.game-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    width: 100%;
    margin-bottom: 12px;
    z-index: 10;
}

.health-board, .timer-board {
    padding: 10px 24px;
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 10px rgba(0,0,0,0.06);
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(8px);
}

.health-board {
    border: 4px solid var(--accent-coral);
    font-size: 1.4rem;
}

.timer-board {
    border: 4px solid var(--accent);
}

.timer-board span {
    font-size: 1.25rem;
    font-weight: 700;
    color: #e65100;
}

.clean-progress-board {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 24px;
    border-radius: 18px;
    border: 4px solid var(--primary-light);
    flex: 1;
    max-width: 450px;
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(8px);
}

.progress-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--primary-dark);
    white-space: nowrap;
}

.progress-bar-outer {
    flex: 1;
    height: 18px;
    background: #e0e0e0;
    border-radius: 9px;
    overflow: hidden;
    border: 2px solid white;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.1);
}

#progress-bar-inner {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, #4caf50, #81c784);
    border-radius: 8px;
    transition: width 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 0 8px rgba(76, 175, 80, 0.5);
}

/* River Canvas Container */
.game-river-container {
    flex: 1;
    border-radius: 28px;
    border: 6px solid white;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-premium);
    background: #0288d1; /* Fallback deep blue */
    display: flex;
    justify-content: center;
    align-items: center;
}

#game-canvas {
    width: 100%;
    height: 100%;
    display: block;
    background: transparent;
    cursor: none; /* Hide default cursor to make custom controls feel premium */
}

/* Game Over / Win overlays */
.win-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(8px);
    z-index: 100;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 24px;
}

.win-card {
    max-width: 560px;
    text-align: center;
    border-color: var(--accent);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    transform: scale(0.9);
}

.animate-pop {
    animation: pop-in 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

@keyframes pop-in {
    100% { transform: scale(1); }
}

.win-emoji {
    font-size: 3.5rem;
    animation: bounce 1s infinite alternate;
}

@keyframes bounce {
    0% { transform: translateY(0); }
    100% { transform: translateY(-15px); }
}

.win-prompt {
    border-color: var(--primary-light);
    background: #e8f5e9;
    padding: 16px 20px;
}

.win-actions {
    display: flex;
    justify-content: center;
    width: 100%;
}

/* Confetti particles */
.confetti-particle {
    position: absolute;
    width: 10px;
    height: 10px;
    z-index: 120;
    pointer-events: none;
    border-radius: 50%;
    animation: confetti-fall 3s linear forwards;
}

@keyframes confetti-fall {
    0% { transform: translateY(-20px) rotate(0deg); opacity: 1; }
    100% { transform: translateY(800px) rotate(360deg); opacity: 0; }
}

/* Global Navigation Footers */
#global-nav {
    height: 80px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 30px;
    background: rgba(255, 255, 255, 0.85);
    border-top: 3px solid rgba(129, 199, 132, 0.3);
    z-index: 10;
}

.wood-btn {
    font-family: var(--font-rounded);
    font-size: 1.25rem;
    font-weight: 700;
    color: #5d4037;
    background: linear-gradient(180deg, #d7ccc8 0%, #a1887f 100%);
    border: 3px solid #5d4037;
    border-radius: 16px;
    padding: 10px 24px;
    cursor: pointer;
    box-shadow: 0 6px 0 #5d4037, 0 8px 16px rgba(0,0,0,0.1);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.wood-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 0 #5d4037, 0 10px 20px rgba(0,0,0,0.15);
}

.wood-btn:active:not(:disabled) {
    transform: translateY(4px);
    box-shadow: 0 2px 0 #5d4037, 0 4px 8px rgba(0,0,0,0.1);
}

.wood-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}

/* Navigation dots */
#progress-indicator {
    display: flex;
    gap: 10px;
}

#progress-indicator .dot {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: #cfd8dc;
    border: 2px solid white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.08);
    transition: var(--transition-playful);
}

#progress-indicator .dot.active {
    background: var(--primary-light);
    transform: scale(1.3);
    box-shadow: 0 0 8px var(--primary-light);
}

.score-display {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin: 14px 0;
    padding: 10px 24px;
    background: rgba(76, 175, 80, 0.12);
    border-radius: 16px;
    border: 3px dashed var(--primary-light);
    animation: pop-in 0.5s ease;
}

/* ==========================================================================
   MOBILE & RESPONSIVE STYLES
   ========================================================================== */
@media (max-width: 768px), (max-height: 700px) {
    /* Full viewport reset for mobile */
    body {
        padding: 0;
        background: #a8e6cf;
    }

    #app-container {
        max-width: 100%;
        max-height: 100%;
        width: 100vw;
        height: 100dvh;
        border: none;
        border-radius: 0;
        box-shadow: none;
    }

    #global-header {
        height: 55px;
        padding: 0 16px;
    }

    .app-title {
        font-size: 1.25rem;
    }

    .icon-btn {
        width: 38px;
        height: 38px;
    }

    .icon {
        width: 18px;
        height: 18px;
    }

    /* Reduce default slide padding */
    .slide {
        padding: 16px 20px;
    }

    /* Start Scene adjustments */
    .start-layout {
        gap: 16px;
    }

    .start-crocodile-container {
        width: 130px;
        height: 130px;
    }

    .start-bubble {
        padding: 16px;
    }

    .start-bubble h2 {
        font-size: 1.6rem;
        margin-bottom: 8px;
    }

    .story-text {
        font-size: 1.1rem;
    }

    .primary-btn, .pulse-btn {
        font-size: 1.1rem;
        padding: 12px 28px;
        border-radius: 16px;
    }

    /* Ancient Scene split to vertical */
    .split-layout {
        flex-direction: column;
        gap: 16px;
    }

    .visual-pane {
        flex: 1.2;
        min-height: 200px;
    }

    .content-pane {
        flex: 0.8;
        justify-content: flex-start;
    }

    .card-stack {
        height: 100%;
        width: 100%;
    }

    .image-frame {
        width: 60%;
        height: 85%;
    }

    .ancient-landscape {
        transform: rotate(-4deg) translate(-15px, 0px);
    }

    .ancient-fossil {
        transform: rotate(4deg) translate(15px, 0px);
    }

    .slide-title-large {
        font-size: 1.6rem;
    }

    /* Game Scene */
    .game-header {
        flex-wrap: wrap;
        gap: 8px;
        margin-bottom: 8px;
    }

    .health-board, .timer-board {
        padding: 6px 14px;
        font-size: 1.1rem;
        border-width: 3px;
        border-radius: 12px;
    }

    .health-board {
        font-size: 1.1rem;
        order: 1;
    }

    .timer-board {
        order: 3;
    }

    .timer-board span {
        font-size: 1.1rem;
    }

    .clean-progress-board {
        padding: 6px 14px;
        border-radius: 12px;
        border-width: 3px;
        max-width: 100%;
        width: 100%;
        order: 2;
        flex: none;
    }

    .progress-title {
        font-size: 0.95rem;
    }

    .progress-bar-outer {
        height: 14px;
    }

    /* Preserving aspect ratio on mobile for game river container to prevent stretching */
    .game-river-container {
        flex: unset;
        width: 100%;
        aspect-ratio: 16 / 9;
        max-height: 55vh;
        border-width: 4px;
        border-radius: 18px;
        margin: auto 0;
    }

    /* Global Footer Navigation */
    #global-nav {
        height: 65px;
        padding: 0 20px;
    }

    .wood-btn {
        font-size: 1.05rem;
        padding: 8px 18px;
        border-radius: 12px;
        box-shadow: 0 4px 0 #5d4037, 0 6px 12px rgba(0,0,0,0.1);
    }

    .wood-btn:active:not(:disabled) {
        transform: translateY(3px);
        box-shadow: 0 1px 0 #5d4037, 0 2px 4px rgba(0,0,0,0.1);
    }

    #progress-indicator .dot {
        width: 12px;
        height: 12px;
    }
}

@media (max-height: 500px) and (orientation: landscape) {
    #global-header {
        height: 44px;
        padding: 0 16px;
    }
    .app-title {
        font-size: 1.1rem;
    }
    .icon-btn {
        width: 32px;
        height: 32px;
    }
    .icon {
        width: 16px;
        height: 16px;
    }
    #global-nav {
        height: 48px;
        padding: 0 16px;
    }
    .wood-btn {
        font-size: 0.95rem;
        padding: 4px 14px;
        border-radius: 8px;
        box-shadow: 0 3px 0 #5d4037, 0 4px 8px rgba(0,0,0,0.1);
    }
    .wood-btn:active:not(:disabled) {
        transform: translateY(2px);
        box-shadow: 0 1px 0 #5d4037, 0 1px 2px rgba(0,0,0,0.1);
    }
    .slide {
        padding: 8px 16px;
    }
    .start-layout {
        gap: 8px;
    }
    .start-crocodile-container {
        width: 80px;
        height: 80px;
    }
    .start-bubble {
        padding: 10px;
        border-radius: 16px;
    }
    .start-bubble h2 {
        font-size: 1.3rem;
        margin-bottom: 4px;
    }
    .story-text {
        font-size: 0.95rem;
    }
    .primary-btn, .pulse-btn {
        font-size: 1rem;
        padding: 8px 20px;
        border-radius: 12px;
    }
    .split-layout {
        flex-direction: row;
        gap: 16px;
    }
    .visual-pane {
        flex: 0.8;
    }
    .content-pane {
        flex: 1.2;
        justify-content: center;
    }
    .image-frame {
        width: 80%;
        height: 85%;
    }
    .game-header {
        flex-wrap: nowrap;
        justify-content: space-between;
        margin-bottom: 4px;
    }
    .health-board, .timer-board {
        padding: 4px 10px;
        font-size: 0.95rem;
    }
    .timer-board span {
        font-size: 0.95rem;
    }
    .clean-progress-board {
        padding: 4px 10px;
        max-width: 250px;
        flex: 1;
        width: auto;
    }
    .progress-title {
        font-size: 0.85rem;
    }
    .progress-bar-outer {
        height: 10px;
    }
    .game-river-container {
        max-height: 50vh;
    }
}

@media (max-height: 500px) {
    .win-card {
        padding: 12px;
        gap: 8px;
    }
    .win-emoji {
        font-size: 2.2rem;
    }
    .win-card h2 {
        font-size: 1.25rem;
    }
    .win-card .story-text {
        font-size: 0.9rem;
    }
    .win-card .score-display {
        font-size: 1.1rem;
        margin: 6px 0;
        padding: 6px 16px;
    }
}