/* ============================
   GMProductions - Main Styles
   Modern, Cinematic, Premium
   ============================ */

/* CSS Variables */
:root {
    /* Colors */
    --primary: #667eea;
    --primary-dark: #5568d3;
    --primary-light: #7c8fef;
    --secondary: #764ba2;
    --accent: #f093fb;
    --dark: #0a0a0f;
    --darker: #050508;
    --gray-900: #1a1a2e;
    --gray-800: #2d2d44;
    --gray-700: #3d3d5c;
    --gray-600: #5c5c7a;
    --gray-500: #8080a0;
    --gray-400: #a0a0c0;
    --gray-300: #c0c0d8;
    --gray-200: #e0e0f0;
    --gray-100: #f0f0ff;
    --white: #ffffff;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-accent: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-dark: linear-gradient(180deg, #0a0a0f 0%, #1a1a2e 100%);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    --shadow-glow: 0 0 40px rgba(102, 126, 234, 0.3);
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 20px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition: all 0.3s ease;
    --transition-fast: all 0.15s ease;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--gray-300);
    background: var(--dark);
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

/* Container */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    color: var(--white);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }

p {
    margin-bottom: var(--spacing-sm);
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.75rem;
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-align: center;
}

.btn-large {
    padding: 1.125rem 2.25rem;
    font-size: var(--font-size-lg);
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    border-color: var(--primary);
    background: rgba(102, 126, 234, 0.1);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

.btn-outline:hover {
    background: var(--white);
    color: var(--dark);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding: 1rem 0;
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: var(--font-size-xl);
    font-weight: 800;
    color: var(--white);
    letter-spacing: -0.5px;
}

.logo-text {
    color: var(--white);
}

.logo-accent {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-menu a {
    color: var(--gray-400);
    font-weight: 500;
    font-size: var(--font-size-sm);
}

.nav-menu a:hover {
    color: var(--white);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--white);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 8rem 0 4rem;
    background: var(--gradient-dark);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(102, 126, 234, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(240, 147, 251, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 40% 80%, rgba(118, 75, 162, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--gray-400);
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-3xl);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-3xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--white);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--gray-500);
    margin-top: 0.25rem;
}

/* Section Styles */
section {
    padding: var(--spacing-3xl) 0;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--spacing-2xl);
}

.section-title {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-xs);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--gray-500);
}

.section-cta {
    text-align: center;
    margin-top: var(--spacing-xl);
}

/* Features Section */
.features {
    background: var(--darker);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: rgba(102, 126, 234, 0.3);
    box-shadow: var(--shadow-xl);
}

.feature-icon {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    color: var(--white);
}

.feature-card h3 {
    margin-bottom: var(--spacing-xs);
}

.feature-card p {
    color: var(--gray-400);
    line-height: 1.7;
}

/* Courses Section */
.courses-preview {
    background: var(--dark);
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: var(--spacing-lg);
}

.course-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: var(--transition);
}

.course-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(102, 126, 234, 0.3);
}

.course-image {
    position: relative;
    overflow: hidden;
}

.course-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    background: var(--gradient-accent);
    color: var(--white);
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.course-content {
    padding: var(--spacing-md);
}

.course-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.course-category {
    font-size: var(--font-size-xs);
    color: var(--primary-light);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

.course-rating {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.stars {
    color: #fbbf24;
    font-size: var(--font-size-sm);
}

.rating-count {
    color: var(--gray-500);
    font-size: var(--font-size-xs);
}

.course-content h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xs);
}

.course-content p {
    color: var(--gray-400);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.course-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-sm);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.course-price {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
}

.price-current {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--white);
}

.price-original {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
    text-decoration: line-through;
}

.btn-enroll {
    color: var(--primary-light);
    font-weight: 600;
    font-size: var(--font-size-sm);
}

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

/* Testimonials */
.testimonials {
    background: var(--darker);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.testimonial-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
}

.testimonial-stars {
    color: #fbbf24;
    margin-bottom: var(--spacing-sm);
}

.testimonial-text {
    color: var(--gray-300);
    font-size: var(--font-size-base);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.author-avatar {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 600;
}

.author-name {
    color: var(--white);
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.author-title {
    color: var(--gray-500);
    font-size: var(--font-size-xs);
}

/* CTA Section */
.cta-section {
    background: var(--dark);
    text-align: center;
}

.cta-content h2 {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-sm);
}

.cta-content p {
    font-size: var(--font-size-lg);
    color: var(--gray-400);
    margin-bottom: var(--spacing-lg);
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* Footer */
.footer {
    background: var(--darker);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-col h4 {
    color: var(--white);
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-sm);
}

.footer-col p {
    color: var(--gray-500);
    font-size: var(--font-size-sm);
    line-height: 1.7;
}

.footer-col ul li {
    margin-bottom: 0.5rem;
}

.footer-col ul a {
    color: var(--gray-500);
    font-size: var(--font-size-sm);
}

.footer-col ul a:hover {
    color: var(--primary-light);
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.social-links a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    color: var(--gray-400);
}

.social-links a:hover {
    background: var(--gradient-primary);
    color: var(--white);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-bottom p {
    color: var(--gray-600);
    font-size: var(--font-size-sm);
}

/* Responsive */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(10, 10, 15, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .hero-stats {
        gap: var(--spacing-lg);
    }
    
    .features-grid,
    .courses-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title,
    h2 {
        font-size: var(--font-size-3xl);
    }
    
    .cta-content h2 {
        font-size: var(--font-size-3xl);
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-cta .btn {
        width: 100%;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .course-footer {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
}

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

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

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

/* Loading State */
.loading {
    opacity: 0;
}

.loaded {
    opacity: 1;
    transition: opacity 0.3s ease;
}