/**
 * Shared Presentation Styles
 * AI-Driven Development Series
 */

* {
    font-family: 'Inter', sans-serif;
    letter-spacing: -0.01em;
}

h1, h2, h3, .font-display {
    font-family: 'Playfair Display', Georgia, serif;
    letter-spacing: -0.02em;
}

:root {
    /* Dark tech theme - blues and purples */
    --color-bg-dark: #030712;
    --color-bg-card: #0f172a;
    --color-bg-card-hover: #1e293b;
    --color-primary: #6366f1;
    --color-primary-light: #818cf8;
    --color-accent: #a855f7;
    --color-accent-light: #c084fc;
    --color-text: #e2e8f0;
    --color-text-muted: #94a3b8;
    --color-text-heading: #f8fafc;
    --color-border: rgba(99, 102, 241, 0.2);
    --color-gradient-1: #4f46e5;
    --color-gradient-2: #7c3aed;
    --color-gradient-3: #a855f7;

    /* Presenter color */
    --presenter-main: #818cf8;
    --presenter-glow: rgba(129, 140, 248, 0.4);

    /* Semantic colors */
    --success-main: #22c55e;
    --success-light: #86efac;
    --warning-main: #f59e0b;
    --warning-light: #fcd34d;
    --danger-main: #ef4444;
    --danger-light: #fca5a5;

    /* Terminal/Code specific */
    --terminal-bg: #0c0c0e;
    --terminal-header: #1c1c1e;
    --code-bg: #0c0c0e;

    /* Cyan accent (for case studies) */
    --cyan: #06b6d4;
    --cyan-glow: rgba(6, 182, 212, 0.35);
    --green: #22c55e;
    --green-glow: rgba(34, 197, 94, 0.35);
}

html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: var(--color-bg-dark);
}

/* Slide System */
.slide {
    opacity: 0;
    transform: translateX(100px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    position: absolute;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.slide.active {
    opacity: 1;
    transform: translateX(0);
    pointer-events: auto;
}

.slide.prev {
    opacity: 0;
    transform: translateX(-100px);
}

#slides-container {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    bottom: 0;
    height: auto;
}

/* Subtitle/Narration bar */
#subtitle-bar {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

#subtitle-bar.visible {
    opacity: 1;
    transform: translateY(0);
}

#subtitle-indicator {
    background-color: var(--presenter-main);
}

#subtitle-text {
    transition: opacity 0.15s ease;
}

#subtitle-text.fade-out {
    opacity: 0;
}

#subtitle-text.fade-in {
    opacity: 1;
}

.progress-bar {
    transition: width 0.4s ease;
}

/* Animations */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

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

@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 0 20px var(--presenter-glow); }
    50% { box-shadow: 0 0 40px var(--color-accent); }
}

.pulse-glow {
    animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes countUp {
    from { opacity: 0; transform: scale(0.8); }
    to { opacity: 1; transform: scale(1); }
}

.stat-animate {
    animation: countUp 0.8s ease-out forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 1s ease-out forwards;
}

@keyframes flicker {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.05); }
}

.fire-icon {
    animation: flicker 0.5s ease-in-out infinite;
}

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

.icon-pulse {
    animation: iconPulse 2s ease-in-out infinite;
}

@keyframes audioWave {
    0%, 100% { height: 12px; }
    50% { height: 24px; }
}

/* Premium gradient backgrounds */
.gradient-bg {
    background:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(99, 102, 241, 0.3) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 90% 90%, rgba(168, 85, 247, 0.15) 0%, transparent 40%),
        linear-gradient(135deg, var(--color-bg-dark) 0%, #0f0a1a 50%, var(--color-bg-dark) 100%);
}

.gradient-bg-accent {
    background:
        radial-gradient(ellipse 100% 80% at 50% 0%, rgba(79, 70, 229, 0.4) 0%, transparent 50%),
        radial-gradient(ellipse 50% 50% at 80% 80%, rgba(168, 85, 247, 0.2) 0%, transparent 50%),
        linear-gradient(135deg, var(--color-gradient-1) 0%, var(--color-gradient-2) 50%, var(--color-gradient-3) 100%);
}

.gradient-bg-soft {
    background:
        radial-gradient(ellipse 80% 60% at 20% 20%, rgba(99, 102, 241, 0.2) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 80% 80%, rgba(168, 85, 247, 0.1) 0%, transparent 40%),
        linear-gradient(180deg, #0f0f2a 0%, #1a1a3a 50%, #15152a 100%);
}

.gradient-bg-warm {
    background:
        radial-gradient(ellipse 80% 60% at 30% 30%, rgba(245, 158, 11, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 70% 70%, rgba(239, 68, 68, 0.1) 0%, transparent 40%),
        linear-gradient(180deg, #1a1510 0%, #1f1a15 50%, #15120f 100%);
}

.gradient-bg-cyan {
    background:
        radial-gradient(ellipse 80% 60% at 30% 30%, rgba(6, 182, 212, 0.2) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 70% 70%, rgba(34, 197, 94, 0.1) 0%, transparent 40%),
        linear-gradient(180deg, #0a1a1a 0%, #0f1f1f 50%, #0a1515 100%);
}

/* Navigation dots */
.nav-dot {
    transition: all 0.3s ease;
    background-color: rgba(99, 102, 241, 0.3);
}

.nav-dot:hover {
    background-color: var(--color-primary);
}

.nav-dot.active {
    background-color: var(--color-accent);
    transform: scale(1.3);
    box-shadow: 0 0 12px var(--color-accent);
}

/* Typography sizing */
.giant-number {
    font-size: clamp(8rem, 25vw, 20rem);
    font-weight: 700;
    line-height: 1;
    letter-spacing: -0.05em;
}

.giant-text {
    font-size: clamp(3rem, 10vw, 8rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
}

.medium-text {
    font-size: clamp(2rem, 6vw, 4rem);
    font-weight: 600;
    line-height: 1.2;
}

.large-text {
    font-size: clamp(2.5rem, 8vw, 6rem);
    font-weight: 700;
    line-height: 1.1;
}

.statement-text {
    font-size: clamp(2.5rem, 7vw, 5rem);
    font-weight: 600;
    line-height: 1.2;
}

/* Play button */
.slide-play-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    z-index: 10;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(99, 102, 241, 0.2);
    border: 1px solid rgba(99, 102, 241, 0.4);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
    transition: all 0.2s ease;
    color: var(--color-text);
    backdrop-filter: blur(8px);
}

.slide-play-btn:hover {
    transform: scale(1.1);
    background: rgba(99, 102, 241, 0.3);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.3);
}

.slide-play-btn.playing {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: white;
}

.slide-play-btn svg {
    width: 20px;
    height: 20px;
}

/* Sequential reveal animations */
.sequential-reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.sequential-reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Code blocks */
.code-block {
    background: var(--terminal-bg);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 12px;
    padding: 1.5rem;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.9rem;
    overflow-x: auto;
}

.code-block .keyword { color: #c792ea; }
.code-block .string { color: #c3e88d; }
.code-block .number { color: #f78c6c; }
.code-block .comment { color: #546e7a; }
.code-block .function { color: #82aaff; }

/* Terminal styling */
.terminal {
    background: var(--terminal-bg);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.terminal-header {
    background: var(--terminal-header);
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

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

.terminal-dot.red { background: #ff5f56; }
.terminal-dot.yellow { background: #ffbd2e; }
.terminal-dot.green { background: #27ca40; }

.terminal-content {
    padding: 1.5rem;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.85rem;
    line-height: 1.6;
    color: var(--color-text);
}

/* Cards */
.info-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.info-card:hover {
    background: var(--color-bg-card-hover);
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

/* Stats display */
.stat-value {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    margin-top: 0.5rem;
}

/* Comparison cards */
.comparison-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.comparison-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 2rem;
    position: relative;
}

.comparison-card.legacy {
    border-color: var(--warning-main);
}

.comparison-card.modern {
    border-color: var(--success-main);
}

.comparison-card .label {
    position: absolute;
    top: -12px;
    left: 20px;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.comparison-card.legacy .label {
    background: var(--warning-main);
    color: #000;
}

.comparison-card.modern .label {
    background: var(--success-main);
    color: #000;
}

/* Flow diagram */
.flow-step {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 8px;
    border-left: 3px solid var(--color-primary);
    margin-bottom: 0.5rem;
}

.flow-step-number {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--color-gradient-1), var(--color-gradient-2));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 700;
    flex-shrink: 0;
}

.flow-arrow {
    text-align: center;
    color: var(--color-primary);
    font-size: 1.25rem;
    padding: 0.25rem 0;
}

/* Reveal animations */
@keyframes revealUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.reveal-item {
    opacity: 0;
    transform: translateY(20px);
}

.slide.active .reveal-item {
    animation: revealUp 0.5s ease-out forwards;
}

.slide.active .reveal-item:nth-child(1) { animation-delay: 0ms; }
.slide.active .reveal-item:nth-child(2) { animation-delay: 120ms; }
.slide.active .reveal-item:nth-child(3) { animation-delay: 240ms; }
.slide.active .reveal-item:nth-child(4) { animation-delay: 360ms; }
.slide.active .reveal-item:nth-child(5) { animation-delay: 480ms; }
.slide.active .reveal-item:nth-child(6) { animation-delay: 600ms; }
.slide.active .reveal-item:nth-child(7) { animation-delay: 720ms; }
.slide.active .reveal-item:nth-child(8) { animation-delay: 840ms; }
.slide.active .reveal-item:nth-child(9) { animation-delay: 960ms; }
.slide.active .reveal-item:nth-child(10) { animation-delay: 1080ms; }

.slide.active [data-reveal-delay="1"] { animation-delay: 0ms; }
.slide.active [data-reveal-delay="2"] { animation-delay: 120ms; }
.slide.active [data-reveal-delay="3"] { animation-delay: 240ms; }
.slide.active [data-reveal-delay="4"] { animation-delay: 360ms; }
.slide.active [data-reveal-delay="5"] { animation-delay: 480ms; }
.slide.active [data-reveal-delay="6"] { animation-delay: 600ms; }
.slide.active [data-reveal-delay="7"] { animation-delay: 720ms; }
.slide.active [data-reveal-delay="8"] { animation-delay: 840ms; }
.slide.active [data-reveal-delay="9"] { animation-delay: 960ms; }
.slide.active [data-reveal-delay="10"] { animation-delay: 1080ms; }

/* Sequential reveal numbered classes */
.reveal-1, .reveal-2, .reveal-3, .reveal-4, .reveal-5, .reveal-6, .reveal-7 {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal-1.visible, .reveal-2.visible, .reveal-3.visible,
.reveal-4.visible, .reveal-5.visible, .reveal-6.visible, .reveal-7.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Audio wave animation */
.audio-wave {
    display: flex;
    align-items: center;
    gap: 2px;
    height: 20px;
}

.audio-wave-bar {
    width: 3px;
    background: var(--color-accent);
    border-radius: 2px;
    animation: audioWave 0.8s ease-in-out infinite;
}

.audio-wave-bar:nth-child(1) { animation-delay: 0s; }
.audio-wave-bar:nth-child(2) { animation-delay: 0.1s; }
.audio-wave-bar:nth-child(3) { animation-delay: 0.2s; }
.audio-wave-bar:nth-child(4) { animation-delay: 0.3s; }

@keyframes audioWave {
    0%, 100% { height: 4px; }
    50% { height: 16px; }
}

/* Background patterns */
.grid-pattern {
    background-image:
        linear-gradient(rgba(var(--color-primary-rgb, 99, 102, 241), 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(var(--color-primary-rgb, 99, 102, 241), 0.03) 1px, transparent 1px);
    background-size: 80px 80px;
}

.dot-pattern {
    background-image: radial-gradient(rgba(var(--color-primary-rgb, 99, 102, 241), 0.15) 1px, transparent 1px);
    background-size: 24px 24px;
}

/* Decorative geometric elements */
.geo-circle {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(var(--color-primary-rgb, 99, 102, 241), 0.2);
    pointer-events: none;
}

.geo-ring {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(var(--color-accent-rgb, 168, 85, 247), 0.15);
    pointer-events: none;
}

/* Text and box effects */
.text-glow {
    text-shadow: 0 0 60px var(--presenter-glow), 0 0 120px rgba(var(--color-accent-rgb, 168, 85, 247), 0.3);
}

.box-glow {
    box-shadow: 0 0 40px var(--presenter-glow), 0 0 80px rgba(var(--color-accent-rgb, 168, 85, 247), 0.2);
}

.glass-card {
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(12px);
    border: 1px solid var(--color-border);
    border-radius: 16px;
}

.gradient-border {
    position: relative;
    background: var(--color-bg-card);
    border-radius: 16px;
}

.gradient-border::before {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: 17px;
    padding: 1px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
}

.accent-line {
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent), var(--color-primary));
    border-radius: 2px;
}

/* Pause indicators */
.pause-dots {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.pause-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-primary);
    opacity: 0.5;
}

/* Strikethrough animation */
@keyframes strikethrough {
    from { width: 0; }
    to { width: 100%; }
}

.strike-animate {
    position: relative;
    display: inline-block;
}

.strike-animate::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    width: 0;
    height: 4px;
    background: var(--danger-main);
    animation: strikethrough 0.8s ease-out 0.5s forwards;
}

/* Step badges */
.step-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    font-weight: 700;
    font-size: 1.25rem;
    color: white;
    box-shadow: 0 0 30px var(--presenter-glow);
}

/* Persona badge */
.persona-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Terminal extended styles */
.terminal-body {
    padding: 1.25rem;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.85rem;
    color: var(--color-text);
}

.terminal-prompt {
    color: var(--color-primary);
}

.terminal-output {
    color: var(--color-text-muted);
    margin-left: 1rem;
}

/* Danger gradient background */
.gradient-bg-danger {
    background:
        radial-gradient(ellipse 80% 60% at 50% 30%, rgba(239, 68, 68, 0.2) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 30% 70%, rgba(245, 158, 11, 0.1) 0%, transparent 40%),
        linear-gradient(180deg, #1a0f0f 0%, #1f1515 50%, #150f0f 100%);
}

/* Responsive */
@media (max-width: 768px) {
    .comparison-grid {
        grid-template-columns: 1fr;
    }

    .giant-text {
        font-size: clamp(2rem, 8vw, 5rem);
    }

    .giant-number {
        font-size: 6rem;
    }
}