/**
 * 🎨 MOVIE PLANNER DESIGN SYSTEM
 * Award-winning, modern design system
 * 
 * Design Principles:
 * - Modern & Clean
 * - Smooth Animations
 * - Glassmorphism & Depth
 * - Vibrant Gradients
 * - Micro-interactions
 * - Accessibility First
 */

/* ============================================
   COLOR SYSTEM - Modern Palette
   ============================================ */
:root {
    /* Primary Brand Colors - Cinematic Blues */
    --color-primary-50: #eff6ff;
    --color-primary-100: #dbeafe;
    --color-primary-200: #bfdbfe;
    --color-primary-300: #93c5fd;
    --color-primary-400: #60a5fa;
    --color-primary-500: #3b82f6;
    --color-primary-600: #2563eb;
    --color-primary-700: #1d4ed8;
    --color-primary-800: #1e40af;
    --color-primary-900: #1e3a8a;
    
    /* Accent Colors - Movie Theater Vibes */
    --color-accent-purple: #8b5cf6;
    --color-accent-pink: #ec4899;
    --color-accent-cyan: #06b6d4;
    --color-accent-amber: #f59e0b;
    
    /* Semantic Colors */
    --color-success: #10b981;
    --color-success-light: #34d399;
    --color-success-dark: #059669;
    --color-error: #ef4444;
    --color-error-light: #f87171;
    --color-error-dark: #dc2626;
    --color-warning: #f59e0b;
    --color-warning-light: #fbbf24;
    --color-warning-dark: #d97706;
    --color-info: #3b82f6;
    --color-info-light: #60a5fa;
    --color-info-dark: #2563eb;
    
    /* Neutral Grays - Light Mode */
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;
    
    /* Background Colors - Light Mode */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-elevated: #ffffff;
    --bg-overlay: rgba(15, 23, 42, 0.8);
    
    /* Text Colors - Light Mode */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #64748b;
    --text-inverse: #ffffff;
    --text-muted: #94a3b8;
    
    /* Border Colors */
    --border-light: #e2e8f0;
    --border-medium: #cbd5e1;
    --border-dark: #94a3b8;
    
    /* Shadow System */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.05);
    
    /* Gradient System - Will be overridden by themes */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-success: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-warm: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    --gradient-cool: linear-gradient(135deg, #30cfd0 0%, #330867 100%);
    --gradient-cinematic: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    --gradient-hero: var(--gradient-cinematic);
    
    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    
    /* Spacing System (8px base) */
    --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 */
    
    /* Typography Scale */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    --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 */
    
    /* Border Radius - Sharp, Modern */
    --radius-sm: 0.25rem;    /* 4px - Sharp */
    --radius-md: 0.375rem;   /* 6px - Subtle */
    --radius-lg: 0.5rem;     /* 8px - Moderate */
    --radius-xl: 0.75rem;    /* 12px - Slightly rounded */
    --radius-2xl: 1rem;      /* 16px - Rounded but not bubbly */
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* Dark Mode Overrides */
:root.dark,
html.dark {
    /* Background Colors - Dark Mode */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-elevated: #1e293b;
    --bg-overlay: rgba(0, 0, 0, 0.9);
    
    /* Text Colors - Dark Mode */
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --text-inverse: #0f172a;
    --text-muted: #64748b;
    
    /* Border Colors - Dark Mode */
    --border-light: #334155;
    --border-medium: #475569;
    --border-dark: #64748b;
    
    /* Glassmorphism - Dark Mode */
    --glass-bg: rgba(15, 23, 42, 0.3);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.5);
    
    /* Shadows - Dark Mode (more intense) */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.4), 0 1px 2px -1px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5), 0 2px 4px -2px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.6), 0 4px 6px -4px rgba(0, 0, 0, 0.6);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.7), 0 8px 10px -6px rgba(0, 0, 0, 0.7);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.8);
}

/* ============================================
   TYPOGRAPHY SYSTEM
   ============================================ */

/* Font Family Variables */
:root[data-font="inter"],
:root:not([data-font]) {
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

:root[data-font="space-grotesk"] {
    --font-sans: 'Space Grotesk', sans-serif;
}

:root[data-font="poppins"] {
    --font-sans: 'Poppins', sans-serif;
}

:root[data-font="montserrat"] {
    --font-sans: 'Montserrat', sans-serif;
}

:root[data-font="raleway"] {
    --font-sans: 'Raleway', sans-serif;
}

:root[data-font="playfair"] {
    --font-sans: 'Playfair Display', serif;
}

:root[data-font="roboto"] {
    --font-sans: 'Roboto', sans-serif;
}

:root[data-font="open-sans"] {
    --font-sans: 'Open Sans', sans-serif;
}

:root[data-font="lato"] {
    --font-sans: 'Lato', sans-serif;
}

:root[data-font="nunito"] {
    --font-sans: 'Nunito', sans-serif;
}

:root[data-font="ubuntu"] {
    --font-sans: 'Ubuntu', sans-serif;
}

:root[data-font="source-sans"] {
    --font-sans: 'Source Sans Pro', sans-serif;
}

:root[data-font="work-sans"] {
    --font-sans: 'Work Sans', sans-serif;
}

:root[data-font="manrope"] {
    --font-sans: 'Manrope', sans-serif;
}

:root[data-font="dm-sans"] {
    --font-sans: 'DM Sans', sans-serif;
}

:root[data-font="outfit"] {
    --font-sans: 'Outfit', sans-serif;
}

:root[data-font="plus-jakarta"] {
    --font-sans: 'Plus Jakarta Sans', sans-serif;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-secondary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: font-family 0.3s ease;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

/* ============================================
   COMPONENT SYSTEM
   ============================================ */

/* Glass Card - Modern Glassmorphism */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-2xl);
    box-shadow: var(--glass-shadow);
    padding: var(--space-6);
    transition: all var(--transition-base);
}

.glass-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px 0 rgba(31, 38, 135, 0.5);
    border-color: rgba(255, 255, 255, 0.3);
}

/* Gradient Card - Sharp, Bold */
.gradient-card {
    background: var(--gradient-hero);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    color: var(--text-inverse);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    position: relative;
    overflow: hidden;
    border: none;
}

.gradient-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0) 100%);
    pointer-events: none;
}

/* Stat Card - Sharp, Geometric */
.stat-card {
    background: var(--bg-elevated);
    border-radius: var(--radius-md);
    padding: var(--space-6);
    border: 1px solid var(--border-light);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: var(--gradient-primary);
    transform: scaleY(0);
    transition: transform var(--transition-base);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    border-color: var(--color-primary-300);
}

.stat-card:hover::before {
    transform: scaleY(1);
}

.stat-card-value {
    font-size: var(--text-4xl);
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: var(--space-2);
}

.stat-card-label {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Button System */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: var(--text-base);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    text-decoration: none;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-inverse);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: var(--gradient-primary);
    filter: brightness(1.1);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-medium);
}

.btn-secondary:hover {
    background: var(--bg-elevated);
    border-color: var(--color-primary-300);
}

/* Badge System - Sharp, Geometric */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.badge-success {
    background: linear-gradient(135deg, var(--color-success), var(--color-success-dark));
    color: white;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

.badge-error {
    background: linear-gradient(135deg, var(--color-error), var(--color-error-dark));
    color: white;
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.3);
}

.badge-warning {
    background: linear-gradient(135deg, var(--color-warning), var(--color-warning-dark));
    color: white;
    box-shadow: 0 2px 8px rgba(245, 158, 11, 0.3);
}

.badge-info {
    background: linear-gradient(135deg, var(--color-info), var(--color-info-dark));
    color: white;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}

/* Loading States */
@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

.skeleton {
    background: linear-gradient(
        90deg,
        var(--bg-tertiary) 0%,
        var(--bg-elevated) 50%,
        var(--bg-tertiary) 100%
    );
    background-size: 1000px 100%;
    animation: shimmer 2s infinite;
    border-radius: var(--radius-md);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

.animate-fade-in {
    animation: fadeIn 0.6s ease-out;
}

.animate-slide-in {
    animation: slideIn 0.6s ease-out;
}

.animate-pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Grid System */
.grid {
    display: grid;
    gap: var(--space-6);
}

.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@media (max-width: 1024px) {
    .grid-cols-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .grid-cols-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 768px) {
    .grid-cols-4,
    .grid-cols-3,
    .grid-cols-2 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
}

/* Utility Classes */
.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.glass-effect {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
}

.shadow-glow {
    box-shadow: 0 0 20px rgba(102, 126, 234, 0.4);
}

/* Responsive Typography */
@media (max-width: 768px) {
    h1 { font-size: var(--text-4xl); }
    h2 { font-size: var(--text-3xl); }
    h3 { font-size: var(--text-2xl); }
}