/* ===== CSS Variables & Base ===== */
:root {
    --pink-soft: #FFB6C1;
    --pink-neon: #FF1493;
    --magenta: #FF00FF;
    --rose-gold: #B76E79;
    --purple: #9B30FF;
    --purple-dark: #4B0082;
    --bg-dark: #0D0D0D;
    --bg-medium: #1A1A2E;
    --text-light: #FFFFFF;
    --text-glow: #FFD1DC;
    --gold: #FFD700;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Quicksand', sans-serif;
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-medium) 50%, #16213E 100%);
    color: var(--text-light);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* ===== Particle Canvas ===== */
#particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* ===== Grid Background ===== */
.grid-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255, 20, 147, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 20, 147, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: 0;
    pointer-events: none;
}

/* ===== Scenes ===== */
.scene {
    min-height: 100vh;
    display: none;
    justify-content: center;
    align-items: center;
    padding: 20px;
    position: relative;
    z-index: 1;
    opacity: 0;
    transition: opacity 0.8s ease-in-out;
}

.scene.active {
    display: flex;
    opacity: 1;
}

/* ===== Terminal Styling ===== */
.terminal {
    background: rgba(13, 13, 13, 0.95);
    border: 1px solid var(--pink-neon);
    border-radius: 12px;
    max-width: 700px;
    width: 100%;
    box-shadow: 
        0 0 20px rgba(255, 20, 147, 0.3),
        inset 0 0 30px rgba(255, 20, 147, 0.05);
    overflow: hidden;
}

.terminal-header {
    background: linear-gradient(90deg, var(--bg-medium), var(--purple-dark));
    padding: 12px 15px;
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid var(--pink-neon);
}

.terminal-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.terminal-dot.red { background: #FF5F56; }
.terminal-dot.yellow { background: #FFBD2E; }
.terminal-dot.green { background: #27C93F; }

.terminal-title {
    margin-left: 10px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: var(--pink-soft);
    letter-spacing: 1px;
}

.terminal-body {
    padding: 20px;
    min-height: 200px;
    max-height: 400px;
    overflow-y: auto;
}

.log-content {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    line-height: 1.8;
}

.log-content .log-line {
    opacity: 0;
    animation: fadeInLog 0.3s forwards;
}

.log-content .log-line.success {
    color: #27C93F;
}

.log-content .log-line.info {
    color: var(--pink-soft);
}

.log-content .log-line.warning {
    color: #FFBD2E;
}

.log-content .log-line.highlight {
    color: var(--pink-neon);
    text-shadow: 0 0 10px var(--pink-neon);
}

@keyframes fadeInLog {
    to { opacity: 1; }
}

/* ===== Authentication Section ===== */
.auth-section {
    margin-top: 30px;
    text-align: center;
}

.auth-section.hidden {
    display: none;
}

.scan-frame {
    width: 280px;
    height: 280px;
    margin: 0 auto 20px;
    position: relative;
    border: 2px solid transparent;
    background: linear-gradient(var(--bg-dark), var(--bg-dark)) padding-box,
                linear-gradient(45deg, var(--pink-neon), var(--purple), var(--magenta)) border-box;
    border-radius: 8px;
    overflow: hidden;
}

.scan-corner {
    position: absolute;
    width: 30px;
    height: 30px;
    border: 3px solid var(--pink-neon);
    z-index: 10;
}

.scan-corner.tl { top: 10px; left: 10px; border-right: none; border-bottom: none; }
.scan-corner.tr { top: 10px; right: 10px; border-left: none; border-bottom: none; }
.scan-corner.bl { bottom: 10px; left: 10px; border-right: none; border-top: none; }
.scan-corner.br { bottom: 10px; right: 10px; border-left: none; border-top: none; }

#camera, #photo-canvas, #uploaded-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: none;
}

#camera.active, #uploaded-photo.active {
    display: block;
}

.scan-line {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--pink-neon), transparent);
    box-shadow: 0 0 15px var(--pink-neon);
    animation: scanLine 2s linear infinite;
    display: none;
}

.scan-line.active {
    display: block;
}

@keyframes scanLine {
    0% { top: 0; }
    100% { top: 100%; }
}

.scan-text {
    font-family: 'Orbitron', sans-serif;
    color: var(--text-glow);
    font-size: 1rem;
    margin-bottom: 5px;
}

.scan-tip {
    color: var(--pink-soft);
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.auth-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.auth-result {
    margin-top: 30px;
}

.auth-result.hidden {
    display: none;
}

.auth-result .glitch {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    color: var(--pink-neon);
    text-shadow: 
        0 0 10px var(--pink-neon),
        0 0 20px var(--pink-neon),
        0 0 30px var(--magenta);
    animation: glitchText 0.5s ease-in-out;
}

.access-granted {
    font-family: 'JetBrains Mono', monospace;
    color: #27C93F;
    font-size: 1.2rem;
    margin-top: 10px;
    animation: pulse 1s ease-in-out infinite;
}

@keyframes glitchText {
    0%, 100% { transform: translate(0); }
    20% { transform: translate(-2px, 2px); }
    40% { transform: translate(2px, -2px); }
    60% { transform: translate(-2px, -2px); }
    80% { transform: translate(2px, 2px); }
}

/* ===== Cyber Button ===== */
.cyber-btn {
    font-family: 'Orbitron', sans-serif;
    font-size: 0.95rem;
    padding: 15px 30px;
    background: linear-gradient(135deg, var(--purple-dark), var(--bg-medium));
    color: var(--text-light);
    border: 2px solid var(--pink-neon);
    border-radius: 8px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.cyber-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 20, 147, 0.3), transparent);
    transition: left 0.5s ease;
}

.cyber-btn:hover::before {
    left: 100%;
}

.cyber-btn:hover {
    box-shadow: 
        0 0 20px var(--pink-neon),
        0 0 40px rgba(255, 20, 147, 0.3);
    transform: translateY(-2px);
}

.cyber-btn.glow {
    box-shadow: 0 0 15px rgba(255, 20, 147, 0.5);
}

.cyber-btn.pulse {
    animation: btnPulse 2s ease-in-out infinite;
}

@keyframes btnPulse {
    0%, 100% { box-shadow: 0 0 15px rgba(255, 20, 147, 0.5); }
    50% { box-shadow: 0 0 30px rgba(255, 20, 147, 0.8), 0 0 50px rgba(255, 0, 255, 0.4); }
}

/* ===== Scene 1: Journey ===== */
.journey-content {
    text-align: center;
    position: relative;
}

.light-lines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
}

.light-lines .line {
    position: absolute;
    width: 2px;
    height: 100%;
    background: linear-gradient(to bottom, transparent, var(--pink-neon), transparent);
    opacity: 0.3;
    animation: flowDown 3s linear infinite;
}

.light-lines .line:nth-child(1) { left: 20%; animation-delay: 0s; }
.light-lines .line:nth-child(2) { left: 50%; animation-delay: 1s; }
.light-lines .line:nth-child(3) { left: 80%; animation-delay: 2s; }

@keyframes flowDown {
    0% { transform: translateY(-100%); }
    100% { transform: translateY(100vh); }
}

.welcome-text {
    font-family: 'Orbitron', sans-serif;
    font-size: clamp(2rem, 5vw, 3.5rem);
    color: var(--text-light);
    text-shadow: 
        0 0 20px var(--pink-neon),
        0 0 40px rgba(255, 20, 147, 0.5);
    margin-bottom: 10px;
    animation: fadeInUp 1s ease-out;
}

.welcome-sub {
    font-size: clamp(1rem, 3vw, 1.5rem);
    color: var(--pink-soft);
    margin-bottom: 50px;
    animation: fadeInUp 1s ease-out 0.3s both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.timeline {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    margin-bottom: 50px;
    flex-wrap: wrap;
    padding: 20px;
}

.timeline-node {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--bg-medium);
    border: 2px solid var(--purple);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: all 0.3s ease;
}

.timeline-node::after {
    content: attr(data-label);
    position: absolute;
    bottom: -25px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    color: var(--pink-soft);
    white-space: nowrap;
}

.timeline-node.active {
    border-color: var(--pink-neon);
    box-shadow: 0 0 20px var(--pink-neon);
}

.timeline-node.active .node-glow {
    width: 20px;
    height: 20px;
    background: var(--pink-neon);
    border-radius: 50%;
    animation: nodeGlow 1.5s ease-in-out infinite;
}

@keyframes nodeGlow {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.3); opacity: 0.7; }
}

.timeline-path {
    width: 40px;
    height: 2px;
    background: linear-gradient(90deg, var(--purple), var(--pink-neon));
    opacity: 0.5;
}

#continue-journey {
    animation: fadeInUp 1s ease-out 0.6s both;
}

/* ===== Scene 2: Message ===== */
.message-content {
    text-align: center;
    width: 100%;
    max-width: 800px;
}

.message-terminal {
    margin-bottom: 30px;
}

.message-terminal .terminal-body {
    min-height: 300px;
}

#message-log .message-line {
    margin-bottom: 8px;
}

#message-log .sender {
    color: #27C93F;
}

#message-log .priority {
    color: #FFBD2E;
}

#message-log .message-text {
    color: var(--text-light);
    font-size: 1rem;
    line-height: 2;
    padding-left: 20px;
    border-left: 2px solid var(--pink-neon);
    margin-top: 15px;
}

#message-log .message-text.complete {
    animation: glowBorder 2s ease-in-out infinite;
}

@keyframes glowBorder {
    0%, 100% { border-color: var(--pink-neon); box-shadow: -5px 0 15px rgba(255, 20, 147, 0.3); }
    50% { border-color: var(--magenta); box-shadow: -5px 0 25px rgba(255, 0, 255, 0.5); }
}

/* ===== Scene 3: Heart Equation ===== */
.heart-content {
    text-align: center;
    width: 100%;
    max-width: 900px;
}

.heart-intro {
    font-family: 'Quicksand', sans-serif;
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    color: var(--pink-soft);
    margin-bottom: 40px;
    animation: fadeInUp 1s ease-out;
}

.heart-equation-container {
    background: rgba(13, 13, 13, 0.8);
    border: 1px solid var(--pink-neon);
    border-radius: 16px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 0 30px rgba(255, 20, 147, 0.2);
}

.equation-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    color: var(--text-light);
    margin-bottom: 15px;
}

.equation-text {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.3rem;
    color: var(--pink-neon);
    text-shadow: 0 0 10px var(--pink-neon);
    margin-bottom: 20px;
}

.equation-text sup {
    font-size: 0.8em;
}

.equation-explanation {
    text-align: left;
    margin: 20px auto 30px;
    max-width: 700px;
    padding: 0 20px;
}

.explanation-line {
    color: var(--text-glow);
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: 10px;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.explanation-line.visible {
    opacity: 1;
    transform: translateY(0);
}

.explanation-line .highlight {
    color: var(--pink-neon);
    font-weight: bold;
    text-shadow: 0 0 5px var(--pink-neon);
}

.explanation-line em {
    color: var(--pink-soft);
    font-style: italic;
}

.equation-description {
    color: var(--text-glow);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 30px;
}

.equation-description .highlight {
    color: var(--pink-neon);
    font-weight: bold;
}

#heart-canvas {
    width: 100%;
    max-width: 400px;
    height: 400px;
    margin: 0 auto;
    display: block;
    border: 1px solid rgba(255, 20, 147, 0.3);
    border-radius: 8px;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.9), rgba(75, 0, 130, 0.5));
}

.h-value {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.2rem;
    color: var(--pink-soft);
    margin-top: 20px;
}

.h-value span {
    color: var(--pink-neon);
}

.emotional-overlay {
    font-family: 'Quicksand', sans-serif;
    font-size: 1rem;
    color: var(--pink-soft);
    margin-top: 20px;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 1s ease-out, transform 1s ease-out;
    font-style: italic;
}

.emotional-overlay.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Scene 4: Make a Wish ===== */
.wish-content {
    text-align: center;
    position: relative;
    z-index: 2;
}

.wish-title {
    font-family: 'Orbitron', sans-serif;
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    color: var(--text-light);
    text-shadow: 0 0 20px var(--pink-neon);
    margin-bottom: 40px;
    animation: fadeInUp 1s ease-out;
}

.cake-container {
    margin-bottom: 30px;
    perspective: 1000px;
}

.cake {
    position: relative;
    width: 200px;
    margin: 0 auto;
    animation: cakeFloat 3s ease-in-out infinite;
}

@keyframes cakeFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.cake-top {
    position: relative;
    height: 40px;
}

.candles {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.candle {
    width: 8px;
    height: 40px;
    background: linear-gradient(to bottom, var(--pink-soft), var(--rose-gold));
    border-radius: 2px;
    position: relative;
}

.flame {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 12px;
    height: 20px;
    background: radial-gradient(ellipse at bottom, #FFD700, #FF6B00, transparent);
    border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
    animation: flicker 0.3s ease-in-out infinite alternate;
    box-shadow: 0 0 20px #FFD700, 0 0 40px #FF6B00;
}

@keyframes flicker {
    0% { transform: translateX(-50%) scale(1) rotate(-2deg); }
    100% { transform: translateX(-50%) scale(1.1) rotate(2deg); }
}

.flame.out {
    animation: blowOut 0.5s ease-out forwards;
}

@keyframes blowOut {
    0% { opacity: 1; transform: translateX(-50%) scale(1); }
    50% { opacity: 0.5; transform: translateX(-50%) scale(1.5) translateY(-10px); }
    100% { opacity: 0; transform: translateX(-50%) scale(0) translateY(-20px); }
}

.cake-layer {
    margin: 0 auto;
    border-radius: 8px;
    position: relative;
}

.layer1 {
    width: 160px;
    height: 50px;
    background: linear-gradient(135deg, var(--pink-neon), var(--magenta));
    box-shadow: 
        0 0 30px rgba(255, 20, 147, 0.5),
        inset 0 -10px 20px rgba(0, 0, 0, 0.3);
}

.layer2 {
    width: 180px;
    height: 50px;
    background: linear-gradient(135deg, var(--rose-gold), var(--pink-soft));
    box-shadow: 
        0 0 30px rgba(183, 110, 121, 0.5),
        inset 0 -10px 20px rgba(0, 0, 0, 0.3);
}

.layer3 {
    width: 200px;
    height: 50px;
    background: linear-gradient(135deg, var(--purple), var(--purple-dark));
    box-shadow: 
        0 0 30px rgba(155, 48, 255, 0.5),
        inset 0 -10px 20px rgba(0, 0, 0, 0.3);
}

.cake-glow {
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 250px;
    height: 50px;
    background: radial-gradient(ellipse at center, rgba(255, 20, 147, 0.3), transparent);
    filter: blur(10px);
}

.wish-instruction {
    color: var(--pink-soft);
    font-size: 1.1rem;
    margin-bottom: 20px;
}

#blow-btn {
    font-size: 1.2rem;
}

#blow-particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 100;
}

@keyframes blowParticle {
    0% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 1;
    }
    100% {
        transform: translate(calc(-50% + var(--tx)), calc(-50% + var(--ty))) scale(0);
        opacity: 0;
    }
}

/* ===== Scene 5: Finale ===== */
.finale-content {
    text-align: center;
    position: relative;
    z-index: 2;
}

.crown-container {
    position: relative;
    height: 80px;
    margin-bottom: -40px;
}

.crown {
    font-size: 4rem;
    animation: crownDrop 1.5s ease-out forwards;
    opacity: 0;
    filter: drop-shadow(0 0 20px var(--gold));
}

@keyframes crownDrop {
    0% { 
        opacity: 0; 
        transform: translateY(-100px) scale(1.5);
    }
    70% {
        opacity: 1;
        transform: translateY(10px) scale(1);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.queen-photo-frame {
    width: 200px;
    height: 200px;
    margin: 0 auto 30px;
    border-radius: 50%;
    overflow: hidden;
    position: relative;
    border: 4px solid var(--gold);
    box-shadow: 
        0 0 30px rgba(255, 215, 0, 0.5),
        0 0 60px rgba(255, 20, 147, 0.3);
}

#queen-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.frame-glow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: radial-gradient(circle, transparent 60%, rgba(255, 20, 147, 0.2) 100%);
    animation: frameGlow 2s ease-in-out infinite;
}

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

.finale-text {
    font-family: 'Orbitron', sans-serif;
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    color: var(--text-light);
    text-shadow: 
        0 0 20px var(--pink-neon),
        0 0 40px var(--magenta);
    margin-bottom: 30px;
    animation: fadeInUp 1s ease-out 1s both;
}

.crown-emoji {
    font-size: 1.2em;
    filter: drop-shadow(0 0 10px var(--gold));
}

.hearts-float {
    display: flex;
    justify-content: center;
    gap: 20px;
    font-size: 2rem;
}

.hearts-float span {
    animation: floatUp 3s ease-in-out infinite;
}

.hearts-float span:nth-child(1) { animation-delay: 0s; }
.hearts-float span:nth-child(2) { animation-delay: 0.5s; }
.hearts-float span:nth-child(3) { animation-delay: 1s; }
.hearts-float span:nth-child(4) { animation-delay: 1.5s; }
.hearts-float span:nth-child(5) { animation-delay: 2s; }

@keyframes floatUp {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-20px) scale(1.1); }
}

#confetti {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

/* ===== Sound Toggle ===== */
.sound-btn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(13, 13, 13, 0.9);
    border: 2px solid var(--pink-neon);
    color: var(--text-light);
    font-size: 1.5rem;
    cursor: pointer;
    z-index: 1000;
    transition: all 0.3s ease;
}

.sound-btn:hover {
    box-shadow: 0 0 20px var(--pink-neon);
}

.sound-btn.muted {
    opacity: 0.5;
}

.sound-btn.hidden {
    display: none !important;
}

/* ===== Utility Classes ===== */
.hidden {
    display: none !important;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    .terminal {
        max-width: 95%;
    }
    
    .timeline {
        gap: 5px;
    }
    
    .timeline-path {
        width: 20px;
    }
    
    .timeline-node {
        width: 45px;
        height: 45px;
    }
    
    .timeline-node::after {
        font-size: 0.6rem;
        bottom: -20px;
    }
    
    .auth-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .cyber-btn {
        padding: 12px 25px;
        font-size: 0.85rem;
    }
    
    .cake {
        transform: scale(0.8);
    }
    
    #heart-canvas {
        max-width: 300px;
        height: 300px;
    }
    
    .queen-photo-frame {
        width: 150px;
        height: 150px;
    }
}

@media (max-width: 480px) {
    .scan-frame {
        width: 220px;
        height: 220px;
    }
    
    .timeline-node {
        width: 35px;
        height: 35px;
    }
    
    .timeline-path {
        width: 15px;
    }
    
    .hearts-float {
        font-size: 1.5rem;
        gap: 10px;
    }
}

/* ===== Scrollbar Styling ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--pink-neon);
    border-radius: 4px;
}

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