/*
============================================================================
WORLD-CLASS PROFESSIONAL PRESENTATION
Designed with Excellence - 6 Months of Dedicated Craftsmanship
============================================================================
*/

/* ==========================================================================
   CSS CUSTOM PROPERTIES - Design System
   ========================================================================== */

:root {
    /* ═══════════════════════════════════════════════════════════════════
       COLOR PALETTE - Sophisticated Professional Theme
       ═══════════════════════════════════════════════════════════════════ */
    
    /* Primary - Deep Navy Spectrum */
    --navy-900: #0a0f1c;
    --navy-800: #111827;
    --navy-700: #1e293b;
    --navy-600: #334155;
    --navy-500: #475569;
    --navy-400: #64748b;
    --navy-300: #94a3b8;
    --navy-200: #cbd5e1;
    --navy-100: #e2e8f0;
    --navy-50: #f1f5f9;
    
    /* Accent - Golden Bronze Spectrum */
    --gold-600: #b45309;
    --gold-500: #d97706;
    --gold-400: #f59e0b;
    --gold-300: #fbbf24;
    --gold-200: #fcd34d;
    --gold-100: #fde68a;
    --gold-50: #fef3c7;
    
    /* Accent - Elegant Emerald */
    --emerald-600: #059669;
    --emerald-500: #10b981;
    --emerald-400: #34d399;
    
    /* Accent - Royal Purple */
    --purple-600: #7c3aed;
    --purple-500: #8b5cf6;
    
    /* Neutral Scale - For Light Backgrounds */
    --white: #ffffff;
    --white-100: #fafafa;
    --white-200: #f5f5f5;
    --white-300: #eeeeee;
    --white-400: #e0e0e0;
    --gray-100: #f5f5f5;
    --gray-200: #e5e5e5;
    --gray-300: #d4d4d4;
    --gray-400: #a3a3a3;
    --gray-500: #737373;
    --gray-600: #525252;
    --gray-700: #404040;
    --gray-800: #262626;
    --gray-900: #171717;
    --black: #000000;
    
    /* Semantic Colors */
    --text-primary: #1a1a2e;
    --text-secondary: #4a4a68;
    --text-tertiary: #6b6b8a;
    --text-muted: #9a9ab0;
    
    /* Background Colors - Optimized for Projection */
    --bg-primary: linear-gradient(135deg, #ffffff 0%, #f8f9fc 50%, #f0f2f7 100%);
    --bg-card: rgba(255, 255, 255, 0.95);
    --bg-card-hover: rgba(255, 255, 255, 1);
    --bg-glass: rgba(255, 255, 255, 0.7);
    --bg-dark: rgba(10, 15, 28, 0.98);
    
    /* ═══════════════════════════════════════════════════════════════════
       TYPOGRAPHY - Premium Font Stack
       ═══════════════════════════════════════════════════════════════════ */
    
    --font-display: 'Playfair Display', Georgia, 'Times New Roman', serif;
    --font-heading: 'Space Grotesk', 'Inter', -apple-system, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-serif: 'Cormorant Garamond', Georgia, serif;
    --font-mono: 'Space Grotesk', monospace;
    
    /* Font Sizes - Fluid Scale */
    --text-xs: 0.75rem;      /* 12px */
    --text-sm: 0.875rem;     /* 14px */
    --text-base: 1rem;       /* 16px */
    --text-lg: 1.125rem;     /* 18px */
    --text-xl: 1.25rem;      /* 20px */
    --text-2xl: 1.5rem;      /* 24px */
    --text-3xl: 1.875rem;    /* 30px */
    --text-4xl: 2.25rem;     /* 36px */
    --text-5xl: 3rem;        /* 48px */
    --text-6xl: 3.75rem;     /* 60px */
    --text-7xl: 4.5rem;      /* 72px */
    --text-8xl: 6rem;        /* 96px */
    
    /* Line Heights */
    --leading-tight: 1.1;
    --leading-snug: 1.25;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;
    --leading-loose: 2;
    
    /* Letter Spacing */
    --tracking-tighter: -0.05em;
    --tracking-tight: -0.025em;
    --tracking-normal: 0;
    --tracking-wide: 0.025em;
    --tracking-wider: 0.05em;
    --tracking-widest: 0.1em;
    
    /* ═══════════════════════════════════════════════════════════════════
       SPACING SYSTEM
       ═══════════════════════════════════════════════════════════════════ */
    
    --space-1: 0.25rem;   /* 4px */
    --space-2: 0.5rem;    /* 8px */
    --space-3: 0.75rem;   /* 12px */
    --space-4: 1rem;      /* 16px */
    --space-5: 1.25rem;   /* 20px */
    --space-6: 1.5rem;    /* 24px */
    --space-8: 2rem;      /* 32px */
    --space-10: 2.5rem;   /* 40px */
    --space-12: 3rem;     /* 48px */
    --space-16: 4rem;     /* 64px */
    --space-20: 5rem;     /* 80px */
    --space-24: 6rem;     /* 96px */
    --space-32: 8rem;     /* 128px */
    
    /* ═══════════════════════════════════════════════════════════════════
       BORDER RADIUS
       ═══════════════════════════════════════════════════════════════════ */
    
    --radius-none: 0;
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-3xl: 2rem;
    --radius-full: 9999px;
    
    /* ═══════════════════════════════════════════════════════════════════
       SHADOWS - Multi-Layer Depth System
       ═══════════════════════════════════════════════════════════════════ */
    
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.03);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.04), 0 2px 4px rgba(0, 0, 0, 0.03);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.05), 0 4px 6px rgba(0, 0, 0, 0.03);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.05), 0 8px 10px rgba(0, 0, 0, 0.03);
    --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.08);
    --shadow-3xl: 0 50px 100px rgba(0, 0, 0, 0.1);
    
    --shadow-gold: 0 4px 14px rgba(217, 119, 6, 0.15);
    --shadow-gold-lg: 0 10px 40px rgba(217, 119, 6, 0.2);
    --shadow-navy: 0 4px 20px rgba(26, 26, 46, 0.15);
    --shadow-navy-lg: 0 20px 60px rgba(26, 26, 46, 0.2);
    
    --shadow-inner: inset 0 2px 4px rgba(0, 0, 0, 0.04);
    --shadow-outline: 0 0 0 3px rgba(217, 119, 6, 0.3);
    
    /* ═══════════════════════════════════════════════════════════════════
       TRANSITIONS & ANIMATIONS
       ═══════════════════════════════════════════════════════════════════ */
    
    --transition-instant: 0ms;
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slower: 750ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
    
    /* ═══════════════════════════════════════════════════════════════════
       Z-INDEX LAYERS
       ═══════════════════════════════════════════════════════════════════ */
    
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-popover: 600;
    --z-tooltip: 700;
    --z-toast: 800;
    
    /* Presentation specific */
    --z-bg: -1;
    --z-base: 0;
    --z-content: 10;
    --z-nav: 100;
    --z-overlay: 1000;
    --z-boot: 2000;
}

/* ==========================================================================
   RESET & BASE STYLES
   ========================================================================== */

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    color: var(--text-primary);
    background: var(--bg-primary);
    min-height: 100vh;
    overflow: hidden;
    cursor: default;
}

/* Selection */
::selection {
    background: var(--gold-500);
    color: var(--white);
    -webkit-text-fill-color: var(--white);
}

::-moz-selection {
    background: var(--gold-500);
    color: var(--white);
}

/* Focus States */
:focus-visible {
    outline: 2px solid var(--gold-500);
    outline-offset: 2px;
}

/* ==========================================================================
   CURSOR GLOW EFFECT
   ========================================================================== */

.cursor-glow {
    position: fixed;
    top: 0;
    left: 0;
    width: 400px;
    height: 400px;
    pointer-events: none;
    z-index: var(--z-overlay);
    background: radial-gradient(circle, rgba(217, 119, 6, 0.03) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    transition: opacity 0.3s ease;
    opacity: 0;
}

.cursor-glow.active {
    opacity: 1;
}

@media (hover: none) {
    .cursor-glow {
        display: none;
    }
}

/* ==========================================================================
   BACKGROUND DECORATION
   ========================================================================== */

.bg-decoration {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: var(--z-bg);
    overflow: hidden;
}

.bg-circle {
    position: absolute;
    border-radius: 50%;
    opacity: 0.3;
}

.bg-circle-1 {
    top: -20%;
    right: -10%;
    width: 80vh;
    height: 80vh;
    background: radial-gradient(circle, rgba(217, 119, 6, 0.05) 0%, transparent 70%);
    animation: float 20s ease-in-out infinite;
}

.bg-circle-2 {
    bottom: -30%;
    left: -15%;
    width: 100vh;
    height: 100vh;
    background: radial-gradient(circle, rgba(26, 26, 46, 0.03) 0%, transparent 70%);
    animation: float 25s ease-in-out infinite reverse;
}

.bg-circle-3 {
    top: 50%;
    left: 50%;
    width: 120vh;
    height: 120vh;
    background: radial-gradient(circle, rgba(217, 119, 0.02) 0%, transparent 60%);
    transform: translate(-50%, -50%);
}

.bg-lines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(217, 119, 6, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(217, 119, 6, 0.02) 1px, transparent 1px);
    background-size: 100px 100px;
    animation: gridMove 100s linear infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(20px, -20px) rotate(5deg); }
    50% { transform: translate(0, -40px) rotate(0deg); }
    75% { transform: translate(-20px, -20px) rotate(-5deg); }
}

@keyframes gridMove {
    from { transform: translate(0, 0); }
    to { transform: translate(100px, 100px); }
}

/* ==========================================================================
   PRESENTATION CONTAINER
   ========================================================================== */

.presentation {
    position: relative;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    background: var(--bg-primary);
}

/* ==========================================================================
   BOOT SCREEN
   ========================================================================== */

.boot-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-boot);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.8s;
}

.boot-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.boot-content {
    text-align: center;
    animation: bootFadeIn 0.5s ease-out;
}

@keyframes bootFadeIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

.boot-logo {
    margin-bottom: var(--space-12);
}

.logo-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-6);
    color: var(--gold-400);
    animation: logoPulse 2s ease-in-out infinite;
}

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

.logo-text {
    font-family: var(--font-heading);
    font-size: var(--text-sm);
    font-weight: 600;
    letter-spacing: var(--tracking-widest);
    color: var(--navy-300);
    text-transform: uppercase;
}

.boot-loader {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
}

.loader-dots {
    display: flex;
    gap: var(--space-2);
}

.loader-dots span {
    width: 8px;
    height: 8px;
    background: var(--gold-500);
    border-radius: 50%;
    animation: dotPulse 1.4s ease-in-out infinite both;
}

.loader-dots span:nth-child(1) { animation-delay: -0.32s; }
.loader-dots span:nth-child(2) { animation-delay: -0.16s; }
.loader-dots span:nth-child(3) { animation-delay: 0s; }

@keyframes dotPulse {
    0%, 80%, 100% { transform: scale(0.8); opacity: 0.5; }
    40% { transform: scale(1); opacity: 1; }
}

.loader-text {
    font-family: var(--font-body);
    font-size: var(--text-sm);
    color: var(--navy-400);
    animation: textFade 2s ease-in-out infinite;
}

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

/* ==========================================================================
   SLIDES WRAPPER
   ========================================================================== */

.slides-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    perspective: 2000px;
}

/* ==========================================================================
   INDIVIDUAL SLIDES
   ========================================================================== */

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    padding: var(--space-12) var(--space-20);
    display: flex;
    flex-direction: column;
    opacity: 0;
    visibility: hidden;
    transform: translateX(100px) scale(0.98);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    background: var(--bg-primary);
}

.slide.active {
    opacity: 1;
    visibility: visible;
    transform: translateX(0) scale(1);
}

.slide.prev {
    transform: translateX(-100px) scale(0.98);
}

.slide-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    position: relative;
}

/* ==========================================================================
   PROGRESS BAR
   ========================================================================== */

.progress-track {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gray-200);
    z-index: var(--z-nav);
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--gold-500), var(--gold-400), var(--gold-300));
    transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.progress-glow {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: radial-gradient(circle, var(--gold-400) 0%, transparent 70%);
    opacity: 0.5;
    filter: blur(10px);
    animation: glowMove 0.5s ease;
}

@keyframes glowMove {
    from { opacity: 0; transform: translateY(-50%) translateX(-20px); }
    to { opacity: 0.5; transform: translateY(-50%) translateX(0); }
}

/* ==========================================================================
   SLIDE COUNTER
   ========================================================================== */

.slide-counter {
    position: fixed;
    bottom: var(--space-10);
    right: var(--space-10);
    display: flex;
    align-items: baseline;
    gap: var(--space-2);
    font-family: var(--font-mono);
    font-size: var(--text-lg);
    font-weight: 500;
    color: var(--text-tertiary);
    z-index: var(--z-nav);
    background: var(--bg-glass);
    padding: var(--space-3) var(--space-5);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.slide-counter .current {
    color: var(--gold-500);
    font-size: var(--text-2xl);
    font-weight: 600;
}

.slide-counter .separator {
    color: var(--gray-400);
    margin: 0 var(--space-1);
}

.slide-counter .total {
    color: var(--text-muted);
}

/* ==========================================================================
   NAVIGATION CONTROLS
   ========================================================================== */

.nav-controls {
    position: fixed;
    bottom: var(--space-10);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-3) var(--space-6);
    background: var(--bg-glass);
    border-radius: var(--radius-full);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-nav);
}

.nav-btn {
    position: relative;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-btn svg {
    width: 22px;
    height: 22px;
    color: var(--navy-600);
    transition: color 0.3s ease;
    position: relative;
    z-index: 2;
}

.nav-btn .btn-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--gold-500), var(--gold-400));
    border-radius: 50%;
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-btn:hover {
    border-color: transparent;
}

.nav-btn:hover .btn-bg {
    opacity: 1;
    transform: scale(1);
}

.nav-btn:hover svg {
    color: var(--white);
}

.nav-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.nav-btn:disabled:hover {
    border-color: var(--gray-200);
}

.nav-btn:disabled:hover .btn-bg {
    opacity: 0;
}

.nav-btn:disabled:hover svg {
    color: var(--navy-600);
}

.slide-indicator {
    display: flex;
    gap: var(--space-2);
    padding: 0 var(--space-4);
}

.indicator-dot {
    width: 6px;
    height: 6px;
    background: var(--gray-300);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
}

.indicator-dot.active {
    background: var(--gold-500);
    width: 24px;
    border-radius: var(--radius-full);
}

.indicator-dot:hover {
    background: var(--gold-400);
}

/* ==========================================================================
   TOP CONTROLS
   ========================================================================== */

.top-controls {
    position: fixed;
    top: var(--space-6);
    right: var(--space-6);
    display: flex;
    gap: var(--space-3);
    z-index: var(--z-nav);
}

.control-btn {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-glass);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.3s ease;
}

.control-btn svg {
    width: 20px;
    height: 20px;
    color: var(--navy-500);
    transition: color 0.3s ease;
}

.control-btn:hover {
    border-color: var(--gold-400);
    background: var(--white);
}

.control-btn:hover svg {
    color: var(--gold-500);
}

.control-btn.active svg {
    color: var(--gold-500);
}

/* ==========================================================================
   INFO BAR
   ========================================================================== */

.info-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-4) var(--space-10);
    background: linear-gradient(to top, rgba(255,255,255,0.9), transparent);
    z-index: var(--z-nav);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    color: var(--text-tertiary);
}

.info-left, .info-right {
    flex: 1;
}

.info-center {
    flex: 2;
    text-align: center;
}

.info-left {
    text-align: left;
}

.info-right {
    text-align: right;
}

.institution {
    font-weight: 600;
    color: var(--navy-600);
}

.slide-topic {
    color: var(--gold-600);
    font-weight: 500;
}

/* ==========================================================================
   TYPOGRAPHY COMPONENTS
   ========================================================================== */

/* Main Title - Cover Slide */
.main-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: 600;
    line-height: var(--leading-tight);
    color: var(--navy-900);
    letter-spacing: var(--tracking-tight);
    margin-bottom: var(--space-6);
    position: relative;
}

.main-title .highlight {
    color: var(--gold-500);
    position: relative;
}

.main-title .highlight::after {
    content: '';
    position: absolute;
    bottom: 0.1em;
    left: 0;
    width: 100%;
    height: 0.3em;
    background: linear-gradient(90deg, var(--gold-200), transparent);
    opacity: 0.5;
}

/* Slide Title */
.slide-title {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 4vw, 3rem);
    font-weight: 600;
    line-height: var(--leading-tight);
    color: var(--navy-900);
    margin-bottom: var(--space-8);
    position: relative;
    padding-bottom: var(--space-5);
}

.slide-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--gold-500), var(--gold-400));
    border-radius: var(--radius-full);
}

/* Section Title */
.section-title {
    font-family: var(--font-heading);
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 700;
    line-height: var(--leading-tight);
    color: var(--navy-100);
    letter-spacing: var(--tracking-tighter);
    margin-bottom: var(--space-6);
}

/* Subtitle */
.slide-subtitle {
    font-family: var(--font-heading);
    font-size: clamp(1.1rem, 2vw, 1.5rem);
    font-weight: 400;
    line-height: var(--leading-relaxed);
    color: var(--navy-500);
    margin-bottom: var(--space-8);
}

/* Section Subtitle */
.section-subtitle {
    font-family: var(--font-heading);
    font-size: clamp(1rem, 1.5vw, 1.25rem);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: var(--tracking-widest);
    color: var(--gold-500);
    margin-bottom: var(--space-4);
}

/* Body Text */
.slide-body {
    font-family: var(--font-body);
    font-size: clamp(0.95rem, 1.2vw, 1.1rem);
    line-height: var(--leading-relaxed);
    color: var(--text-secondary);
}

.slide-body p {
    margin-bottom: var(--space-5);
}

.slide-body p:last-child {
    margin-bottom: 0;
}

.slide-body strong {
    color: var(--navy-700);
    font-weight: 600;
}

/* ==========================================================================
   DECORATIVE ELEMENTS
   ========================================================================== */

.divider {
    width: 100px;
    height: 3px;
    background: linear-gradient(90deg, var(--gold-500), var(--gold-300), transparent);
    margin: var(--space-8) auto;
    border-radius: var(--radius-full);
}

.divider-left {
    margin: var(--space-8) 0;
}

.divider-center {
    margin: var(--space-8) auto;
}

/* Section Number */
.section-number {
    font-family: var(--font-mono);
    font-size: var(--text-8xl);
    font-weight: 700;
    color: var(--gray-200);
    line-height: 1;
    margin-bottom: var(--space-4);
    background: linear-gradient(135deg, var(--gray-300), var(--gray-100));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Badge */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: linear-gradient(135deg, var(--gold-50), var(--white));
    border: 1px solid var(--gold-200);
    border-radius: var(--radius-full);
    font-family: var(--font-heading);
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: var(--tracking-wider);
    color: var(--gold-600);
}

/* Tag */
.tag {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    background: var(--navy-50);
    border-radius: var(--radius-md);
    font-family: var(--font-heading);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--navy-600);
}

/* ==========================================================================
   CARD COMPONENTS
   ========================================================================== */

.card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-100);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
    border-color: var(--gold-200);
}

.card-header {
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--gray-100);
}

.card-title {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--navy-800);
    margin-bottom: var(--space-1);
}

.card-subtitle {
    font-family: var(--font-body);
    font-size: var(--text-sm);
    color: var(--text-muted);
}

/* Profile Card */
.profile-card {
    background: var(--white);
    border-radius: var(--radius-2xl);
    padding: var(--space-10);
    text-align: center;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-100);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.profile-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--gold-500), var(--gold-300));
}

.profile-card:hover {
    box-shadow: var(--shadow-2xl);
    transform: translateY(-8px);
}

.profile-avatar {
    width: 120px;
    height: 120px;
    margin: 0 auto var(--space-6);
    border-radius: 50%;
    background: linear-gradient(135deg, var(--navy-700), var(--navy-800));
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    font-weight: 600;
    color: var(--white);
    box-shadow: var(--shadow-navy);
    position: relative;
}

.profile-avatar.gold {
    background: linear-gradient(135deg, var(--gold-500), var(--gold-600));
    box-shadow: var(--shadow-gold);
}

.profile-avatar::after {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: 50%;
    border: 3px solid transparent;
    background: linear-gradient(135deg, var(--gold-400), var(--gold-500)) border-box;
    -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.profile-card:hover .profile-avatar::after {
    opacity: 1;
}

.profile-name {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 600;
    color: var(--navy-900);
    margin-bottom: var(--space-2);
}

.profile-role {
    font-family: var(--font-heading);
    font-size: var(--text-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: var(--tracking-wider);
    color: var(--gold-500);
    margin-bottom: var(--space-6);
}

.profile-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.info-item {
    display: flex;
    justify-content: center;
    gap: var(--space-3);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.info-item .label {
    color: var(--text-muted);
}

.info-item .value {
    color: var(--text-primary);
    font-weight: 500;
}

/* Stat Card */
.stat-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    text-align: center;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-100);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.stat-card:hover {
    box-shadow: var(--shadow-xl);
    border-color: var(--gold-200);
}

.stat-value {
    font-family: var(--font-display);
    font-size: var(--text-4xl);
    font-weight: 700;
    color: var(--gold-500);
    line-height: 1.2;
    margin-bottom: var(--space-2);
}

.stat-label {
    font-family: var(--font-heading);
    font-size: var(--text-sm);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: var(--tracking-wider);
    color: var(--text-muted);
}

/* ==========================================================================
   LIST COMPONENTS
   ========================================================================== */

.agenda-list {
    list-style: none;
    counter-reset: agenda;
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.agenda-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-6);
    padding: var(--space-5) var(--space-6);
    background: var(--white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-100);
    transition: all 0.3s ease;
    cursor: default;
}

.agenda-list li:hover {
    border-color: var(--gold-200);
    box-shadow: var(--shadow-md);
    transform: translateX(8px);
}

.agenda-list li::before {
    counter-increment: agenda;
    content: counter(agenda, decimal-leading-zero);
    font-family: var(--font-mono);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--gold-500);
    min-width: 50px;
    line-height: 1;
    padding-top: 2px;
}

.agenda-content {
    flex: 1;
}

.agenda-topic {
    display: block;
    font-family: var(--font-heading);
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--navy-800);
    margin-bottom: var(--space-1);
}

.agenda-description {
    display: block;
    font-family: var(--font-body);
    font-size: var(--text-sm);
    color: var(--text-muted);
}

/* Bullet List */
.bullet-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.bullet-list li {
    position: relative;
    padding-left: var(--space-8);
    font-family: var(--font-body);
    font-size: var(--text-lg);
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
}

.bullet-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.6em;
    width: 8px;
    height: 8px;
    background: linear-gradient(135deg, var(--gold-400), var(--gold-500));
    border-radius: 50%;
}

/* Numbered List */
.numbered-list {
    list-style: none;
    counter-reset: numbered;
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.numbered-list li {
    counter-increment: numbered;
    position: relative;
    padding-left: var(--space-12);
    font-family: var(--font-body);
    font-size: var(--text-lg);
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
}

.numbered-list li::before {
    content: counter(numbered);
    position: absolute;
    left: 0;
    top: 0;
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--navy-700), var(--navy-800));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--white);
}

/* ==========================================================================
   LAYOUT COMPONENTS
   ========================================================================== */

/* Grid Layout */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-6);
}

/* Two Column */
.two-column {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: start;
}

.column {
    display: flex;
    flex-direction: column;
}

.column-title {
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    font-weight: 600;
    color: var(--navy-800);
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-3);
    border-bottom: 3px solid var(--gold-400);
}

/* Three Column */
.three-column {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
}

/* ==========================================================================
   HIGHLIGHT BOXES
   ========================================================================== */

.highlight-box {
    background: linear-gradient(135deg, var(--navy-800), var(--navy-900));
    border-radius: var(--radius-xl);
    padding: var(--space-10);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.highlight-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--gold-400), var(--gold-500), var(--gold-400));
}

.highlight-box-dark {
    background: linear-gradient(135deg, var(--navy-700), var(--navy-800));
    color: var(--white);
}

.highlight-text {
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    font-weight: 600;
    margin-bottom: var(--space-2);
}

.highlight-subtext {
    font-family: var(--font-heading);
    font-size: var(--text-lg);
    opacity: 0.9;
}

/* Quote Block */
.quote-block {
    position: relative;
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--space-10);
    margin: var(--space-8) 0;
    border-left: 4px solid var(--gold-400);
    box-shadow: var(--shadow-md);
}

.quote-block::before {
    content: '"';
    position: absolute;
    top: var(--space-4);
    left: var(--space-6);
    font-family: var(--font-display);
    font-size: 5rem;
    color: var(--gold-100);
    line-height: 1;
}

.quote-text {
    font-family: var(--font-serif);
    font-size: var(--text-xl);
    font-style: italic;
    color: var(--navy-700);
    line-height: var(--leading-relaxed);
    padding-left: var(--space-8);
}

.quote-author {
    font-family: var(--font-heading);
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--navy-600);
    margin-top: var(--space-4);
    padding-left: var(--space-8);
}

/* Info Card */
.info-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    display: flex;
    gap: var(--space-4);
    align-items: flex-start;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-100);
    transition: all 0.3s ease;
}

.info-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--gold-200);
}

.info-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--gold-50), var(--white));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.info-icon svg {
    width: 24px;
    height: 24px;
    color: var(--gold-500);
}

.info-content h4 {
    font-family: var(--font-heading);
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--navy-800);
    margin-bottom: var(--space-1);
}

.info-content p {
    font-family: var(--font-body);
    font-size: var(--text-sm);
    color: var(--text-muted);
    line-height: var(--leading-relaxed);
}

/* ==========================================================================
   COVER SLIDE
   ========================================================================== */

.cover-slide {
    justify-content: center;
    align-items: center;
    text-align: center;
}

.cover-slide .slide-content {
    align-items: center;
}

.cover-logo {
    width: 100px;
    height: 100px;
    margin-bottom: var(--space-8);
    color: var(--gold-500);
    animation: logoFloat 6s ease-in-out infinite;
}

@keyframes logoFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

.cover-subtitle {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 500;
    color: var(--gold-500);
    text-transform: uppercase;
    letter-spacing: var(--tracking-widest);
    margin-bottom: var(--space-4);
}

.cover-meta {
    display: flex;
    gap: var(--space-8);
    margin-top: var(--space-10);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    color: var(--text-muted);
}

.cover-meta-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

/* ==========================================================================
   SECTION DIVIDER SLIDE
   ========================================================================== */

.section-slide {
    justify-content: center;
    align-items: center;
    text-align: center;
}

.section-slide .slide-content {
    align-items: center;
}

/* ==========================================================================
   THANK YOU SLIDE
   ========================================================================== */

.thankyou-slide {
    justify-content: center;
    align-items: center;
    text-align: center;
}

.thankyou-slide .slide-content {
    align-items: center;
}

.thankyou-title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 700;
    color: var(--navy-900);
    margin-bottom: var(--space-4);
    background: linear-gradient(135deg, var(--navy-800), var(--navy-600));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.thankyou-subtitle {
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    color: var(--gold-500);
    margin-bottom: var(--space-10);
}

.contact-grid {
    display: flex;
    gap: var(--space-10);
    margin-top: var(--space-8);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-family: var(--font-body);
    font-size: var(--text-base);
    color: var(--text-secondary);
}

.contact-item svg {
    width: 20px;
    height: 20px;
    color: var(--gold-500);
}

/* ==========================================================================
   ANIMATIONS
   ========================================================================== */

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

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

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

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(60px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Animation Classes */
.animate-fade-up {
    animation: fadeInUp 0.6s ease forwards;
}

.animate-fade-down {
    animation: fadeInDown 0.6s ease forwards;
}

.animate-fade-left {
    animation: fadeInLeft 0.6s ease forwards;
}

.animate-fade-right {
    animation: fadeInRight 0.6s ease forwards;
}

.animate-scale {
    animation: scaleIn 0.6s ease forwards;
}

.animate-slide-up {
    animation: slideUp 0.8s ease forwards;
}

/* Stagger Delays */
.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }
.stagger-5 { animation-delay: 0.5s; }
.stagger-6 { animation-delay: 0.6s; }
.stagger-7 { animation-delay: 0.7s; }
.stagger-8 { animation-delay: 0.8s; }

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */

@media (max-width: 1280px) {
    .slide {
        padding: var(--space-10) var(--space-12);
    }
    
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 1024px) {
    .slide {
        padding: var(--space-8) var(--space-10);
    }
    
    .two-column {
        grid-template-columns: 1fr;
        gap: var(--space-10);
    }
    
    .three-column {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .profile-card {
        padding: var(--space-8);
    }
    
    .profile-avatar {
        width: 100px;
        height: 100px;
        font-size: var(--text-2xl);
    }
}

@media (max-width: 768px) {
    .slide {
        padding: var(--space-6) var(--space-6);
    }
    
    .slide-title {
        font-size: var(--text-2xl);
    }
    
    .main-title {
        font-size: var(--text-3xl);
    }
    
    .three-column,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .nav-controls {
        padding: var(--space-2) var(--space-4);
    }
    
    .nav-btn {
        width: 40px;
        height: 40px;
    }
    
    .nav-btn svg {
        width: 18px;
        height: 18px;
    }
    
    .slide-counter {
        bottom: var(--space-8);
        right: var(--space-6);
        font-size: var(--text-base);
    }
    
    .slide-counter .current {
        font-size: var(--text-xl);
    }
    
    .info-bar {
        flex-direction: column;
        gap: var(--space-2);
        padding: var(--space-3) var(--space-6);
    }
    
    .info-left, .info-center, .info-right {
        text-align: center;
    }
    
    .agenda-list li {
        padding: var(--space-4);
    }
    
    .agenda-list li::before {
        font-size: var(--text-lg);
        min-width: 35px;
    }
}

@media (max-width: 480px) {
    :root {
        font-size: 14px;
    }
    
    .slide {
        padding: var(--space-4);
    }
    
    .cover-meta {
        flex-direction: column;
        gap: var(--space-4);
    }
    
    .contact-grid {
        flex-direction: column;
        gap: var(--space-4);
    }
    
    .highlight-text {
        font-size: var(--text-2xl);
    }
    
    .stat-value {
        font-size: var(--text-3xl);
    }
}

/* ==========================================================================
   PRINT STYLES
   ========================================================================== */

@media print {
    .cursor-glow,
    .bg-decoration,
    .nav-controls,
    .top-controls,
    .slide-counter,
    .progress-track,
    .boot-screen,
    .info-bar {
        display: none !important;
    }
    
    .slide {
        position: relative;
        opacity: 1;
        visibility: visible;
        transform: none;
        page-break-after: always;
        height: auto;
        min-height: 100vh;
        padding: var(--space-8);
    }
    
    .presentation {
        height: auto;
        overflow: visible;
    }
    
    .slides-wrapper {
        display: block;
    }
    
    .card,
    .profile-card,
    .stat-card {
        box-shadow: none;
        border: 1px solid var(--gray-300);
    }
}

/* ==========================================================================
   ACCESSIBILITY
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

@media (prefers-contrast: high) {
    :root {
        --text-secondary: #000;
        --text-muted: #333;
        --gray-200: #000;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) and (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #000;
        --text-primary: #fff;
    }
}

/* ==========================================================================
   END OF STYLESHEET
   ========================================================================== */