@import url('https://fonts.googleapis.com/css2?family=Bangers&family=Outfit:wght@300;500;700;900&family=Permanent+Marker&display=swap');

/* =============================================
   CSS VARIABLES & THEME DEFINITIONS
   ============================================= */
:root {
    --font-main: 'Outfit', sans-serif;
    --font-display: 'Bangers', cursive;
    --font-quirky: 'Permanent Marker', cursive;

    /* Dystopian */
    --bg-image-dystopian: url('dystopian.png');
    --overlay-dystopian: linear-gradient(135deg, rgba(10, 0, 30, 0.55) 0%, rgba(5, 0, 20, 0.4) 100%);
    --accent-dystopian: #00ffff;
    --accent2-dystopian: #ff00cc;
    --text-dystopian: #e0f7ff;
    --glow-dystopian: 0 0 20px #00ffff, 0 0 40px #ff00cc;

    /* Ancient Temple */
    --bg-image-ancient: url('ancient_temple.png');
    --overlay-ancient: linear-gradient(135deg, rgba(20, 10, 0, 0.55) 0%, rgba(0, 20, 10, 0.4) 100%);
    --accent-ancient: #f1c40f;
    --accent2-ancient: #e67e22;
    --text-ancient: #fff8e1;
    --glow-ancient: 0 0 20px #f1c40f, 0 0 40px #e67e22;

    /* Deserted */
    --bg-image-deserted: url('deserted.png');
    --overlay-deserted: linear-gradient(135deg, rgba(30, 10, 0, 0.5) 0%, rgba(20, 5, 0, 0.35) 100%);
    --accent-deserted: #ff9f43;
    --accent2-deserted: #ee5a24;
    --text-deserted: #fff3e0;
    --glow-deserted: 0 0 20px #ff9f43, 0 0 40px #ee5a24;

    /* Active theme defaults (dystopian) */
    --current-accent: var(--accent-dystopian);
    --current-accent2: var(--accent2-dystopian);
    --current-text: var(--text-dystopian);
    --current-glow: var(--glow-dystopian);
}

/* =============================================
   THEME BODY CLASSES
   ============================================= */
body.theme-dystopian {
    --current-accent: var(--accent-dystopian);
    --current-accent2: var(--accent2-dystopian);
    --current-text: var(--text-dystopian);
    --current-glow: var(--glow-dystopian);
}

body.theme-ancient {
    --current-accent: var(--accent-ancient);
    --current-accent2: var(--accent2-ancient);
    --current-text: var(--text-ancient);
    --current-glow: var(--glow-ancient);
}

body.theme-deserted {
    --current-accent: var(--accent-deserted);
    --current-accent2: var(--accent2-deserted);
    --current-text: var(--text-deserted);
    --current-glow: var(--glow-deserted);
}

/* =============================================
   BASE
   ============================================= */
*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    overflow: hidden;
    font-family: var(--font-main);
    user-select: none;
    touch-action: none;
}

/* =============================================
   GAME CONTAINER & CANVAS
   ============================================= */
#game-container {
    position: relative;
    width: 100vw;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

/* Background layer — swapped via JS class on #game-container */
#game-container::before {
    content: '';
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    transition: opacity 0.8s ease;
    z-index: 0;
}

#game-container.bg-dystopian::before {
    background-image: var(--overlay-dystopian), var(--bg-image-dystopian);
}

#game-container.bg-ancient::before {
    background-image: var(--overlay-ancient), var(--bg-image-ancient);
}

#game-container.bg-deserted::before {
    background-image: var(--overlay-deserted), var(--bg-image-deserted);
}

canvas {
    display: block;
    width: 100%;
    height: 100%;
    position: relative;
    z-index: 1;
}

/* =============================================
   UI LAYER
   ============================================= */
#ui-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 2;
}

/* =============================================
   SCREENS (Start / Game Over)
   ============================================= */
.screen {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(14px) saturate(1.5);
    -webkit-backdrop-filter: blur(14px) saturate(1.5);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s ease;
    z-index: 10;
    padding: 2rem;
}

.screen.active {
    opacity: 1;
    pointer-events: auto;
}

/* =============================================
   START SCREEN — LANDING PAGE
   ============================================= */

/* Animated shimmer badge */
.game-badge {
    font-family: var(--font-quirky);
    font-size: 0.95rem;
    color: var(--current-accent);
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 0.4rem;
    opacity: 0.85;
    animation: pulse-badge 2s ease-in-out infinite;
}

@keyframes pulse-badge {

    0%,
    100% {
        opacity: 0.6;
        transform: scale(1);
    }

    50% {
        opacity: 1;
        transform: scale(1.05);
    }
}

/* Main title */
h1 {
    font-family: var(--font-display);
    font-size: clamp(4rem, 12vw, 7rem);
    margin: 0 0 0.1rem;
    line-height: 1;
    color: #fff;
    letter-spacing: 6px;
    text-transform: uppercase;
    text-shadow: var(--current-glow), 4px 4px 0px var(--current-accent2);
    animation: title-wobble 3s ease-in-out infinite;
    position: relative;
}

@keyframes title-wobble {

    0%,
    100% {
        transform: rotate(-1deg) scale(1);
    }

    50% {
        transform: rotate(1deg) scale(1.02);
    }
}

/* Subtitle tagline */
.tagline {
    font-family: var(--font-quirky);
    font-size: clamp(1rem, 3vw, 1.4rem);
    color: var(--current-accent);
    margin: 0.3rem 0 1.8rem;
    text-align: center;
    text-shadow: 0 0 12px var(--current-accent);
    animation: flicker 4s ease-in-out infinite;
}

@keyframes flicker {

    0%,
    90%,
    100% {
        opacity: 1;
    }

    92% {
        opacity: 0.4;
    }

    94% {
        opacity: 1;
    }

    96% {
        opacity: 0.3;
    }

    98% {
        opacity: 1;
    }
}

/* Theme selector */
.theme-selector {
    margin-bottom: 1.6rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.6rem;
}

.theme-label {
    font-family: var(--font-quirky);
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.7);
    letter-spacing: 1px;
}

/* Theme pill buttons */
.theme-pills {
    display: flex;
    gap: 0.6rem;
    flex-wrap: wrap;
    justify-content: center;
}

.theme-pill {
    padding: 0.45rem 1.1rem;
    font-family: var(--font-main);
    font-size: 0.85rem;
    font-weight: 700;
    border-radius: 50px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.7);
    cursor: pointer;
    transition: all 0.25s ease;
    letter-spacing: 0.5px;
    pointer-events: auto;
}

.theme-pill:hover {
    background: rgba(255, 255, 255, 0.18);
    border-color: var(--current-accent);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.3);
}

.theme-pill.active {
    background: var(--current-accent);
    border-color: var(--current-accent);
    color: #000;
    box-shadow: 0 0 16px var(--current-accent);
    transform: translateY(-2px);
}

/* Start button */
#start-btn {
    padding: 1rem 3.5rem;
    font-family: var(--font-display);
    font-size: 2rem;
    letter-spacing: 3px;
    color: #000;
    background: var(--current-accent);
    border: none;
    border-radius: 50px;
    cursor: pointer;
    box-shadow: 0 0 30px var(--current-accent), 0 6px 20px rgba(0, 0, 0, 0.4);
    transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.2s, background 0.4s;
    pointer-events: auto;
    animation: btn-pulse 2s ease-in-out infinite;
    position: relative;
    overflow: hidden;
}

#start-btn::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -60%;
    width: 60%;
    height: 200%;
    background: rgba(255, 255, 255, 0.25);
    transform: skewX(-20deg);
    animation: btn-shine 3s ease-in-out infinite;
}

@keyframes btn-shine {
    0% {
        left: -60%;
    }

    60%,
    100% {
        left: 120%;
    }
}

@keyframes btn-pulse {

    0%,
    100% {
        box-shadow: 0 0 20px var(--current-accent), 0 6px 20px rgba(0, 0, 0, 0.4);
    }

    50% {
        box-shadow: 0 0 40px var(--current-accent), 0 0 60px var(--current-accent2), 0 6px 20px rgba(0, 0, 0, 0.4);
    }
}

#start-btn:hover {
    transform: translateY(-3px) scale(1.05);
}

#start-btn:active {
    transform: translateY(1px) scale(0.98);
}

/* Hint text */
.hint-text {
    margin-top: 1.2rem;
    font-family: var(--font-main);
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.4);
    letter-spacing: 1px;
    animation: hint-blink 2s ease-in-out infinite;
}

@keyframes hint-blink {

    0%,
    100% {
        opacity: 0.4;
    }

    50% {
        opacity: 0.8;
    }
}

/* =============================================
   GAME OVER SCREEN
   ============================================= */
h2 {
    font-family: var(--font-display);
    font-size: clamp(3rem, 10vw, 5.5rem);
    color: var(--current-accent);
    margin: 0 0 0.3rem;
    letter-spacing: 4px;
    text-shadow: var(--current-glow);
    animation: title-wobble 2s ease-in-out infinite;
}

.game-over-sub {
    font-family: var(--font-quirky);
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 0.5rem;
}

#final-score {
    font-family: var(--font-display);
    font-size: clamp(2rem, 6vw, 3.5rem);
    color: #fff;
    margin-bottom: 2rem;
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.4);
    letter-spacing: 2px;
}

#restart-btn {
    padding: 0.9rem 3rem;
    font-family: var(--font-display);
    font-size: 1.8rem;
    letter-spacing: 3px;
    color: #000;
    background: var(--current-accent);
    border: none;
    border-radius: 50px;
    cursor: pointer;
    box-shadow: 0 0 25px var(--current-accent), 0 6px 20px rgba(0, 0, 0, 0.4);
    transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.2s;
    pointer-events: auto;
    position: relative;
    overflow: hidden;
}

#restart-btn::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -60%;
    width: 60%;
    height: 200%;
    background: rgba(255, 255, 255, 0.25);
    transform: skewX(-20deg);
    animation: btn-shine 3s ease-in-out infinite;
}

#restart-btn:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 0 40px var(--current-accent), 0 8px 25px rgba(0, 0, 0, 0.5);
}

#restart-btn:active {
    transform: translateY(1px) scale(0.98);
}

/* =============================================
   SCORE DISPLAY
   ============================================= */
#score-container {
    position: absolute;
    top: 8%;
    font-family: var(--font-display);
    font-size: clamp(4rem, 12vw, 7rem);
    font-weight: 400;
    color: rgba(255, 255, 255, 0.35);
    z-index: 5;
    pointer-events: none;
    transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275), color 0.2s;
    text-shadow: 0 0 30px rgba(255, 255, 255, 0.15);
    letter-spacing: 4px;
}

#score-container.bump {
    transform: scale(1.25) rotate(-3deg);
    color: rgba(255, 255, 255, 0.75);
    text-shadow: var(--current-glow);
}

/* =============================================
   PERFECT MESSAGE
   ============================================= */
#perfect-message {
    position: absolute;
    top: 40%;
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 8vw, 4rem);
    font-weight: 400;
    color: var(--current-accent);
    opacity: 0;
    transform: scale(0.5) rotate(-5deg);
    transition: opacity 0.25s, transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    text-shadow: var(--current-glow);
    letter-spacing: 4px;
    pointer-events: none;
}

#perfect-message.show {
    opacity: 1;
    transform: scale(1.4) rotate(3deg);
}

/* =============================================
   FLOATING PARTICLES (decorative, CSS-only)
   ============================================= */
.particle {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    animation: float-particle linear infinite;
    opacity: 0;
}

@keyframes float-particle {
    0% {
        transform: translateY(100vh) scale(0);
        opacity: 0;
    }

    10% {
        opacity: 0.6;
    }

    90% {
        opacity: 0.3;
    }

    100% {
        transform: translateY(-20vh) scale(1.5);
        opacity: 0;
    }
}