/* 
  Premium Design System for EquineGo Lessons 
*/
:root {
    /* Color Palette */
    --clr-primary-900: #0f1c14;
    --clr-primary-800: #1a3324;
    --clr-primary-600: #2a523a;
    --clr-primary-500: #3a7150; /* Brand Green */
    --clr-primary-400: #559b70;
    
    --clr-accent-600: #9e743a;
    --clr-accent-500: #c29a65; /* Leather Gold */
    --clr-accent-400: #d4b58a;
    
    --clr-neutral-900: #111827;
    --clr-neutral-800: #1f2937;
    --clr-neutral-600: #4b5563;
    --clr-neutral-400: #9ca3af;
    --clr-neutral-200: #e5e7eb;
    --clr-neutral-100: #f3f4f6;
    --clr-neutral-50:  #faf9f6; /* Off white background */
    --clr-white: #ffffff;

    /* Typography */
    --font-family-base: 'Outfit', system-ui, -apple-system, sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 5rem;
    
    /* Borders & Shadows */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease-out;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-base);
    background-color: var(--clr-neutral-50);
    color: var(--clr-neutral-600);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--clr-neutral-900);
    font-weight: 700;
    line-height: 1.2;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(2rem, 4vw, 3rem); letter-spacing: -0.01em; margin-bottom: var(--spacing-lg); }
h3 { font-size: 1.25rem; margin-bottom: var(--spacing-sm); }
p { margin-bottom: var(--spacing-md); }
a { text-decoration: none; color: inherit; transition: color var(--transition-fast); }

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

.text-center { text-align: center; }
.section-padding { padding: var(--spacing-3xl) 0; }
.bg-light { background-color: var(--clr-white); }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    font-family: inherit;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--clr-primary-500);
    color: var(--clr-white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background-color: var(--clr-primary-600);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background-color: transparent;
    color: var(--clr-neutral-800);
    border: 1px solid var(--clr-neutral-200);
}

.btn-outline:hover {
    border-color: var(--clr-neutral-400);
    background-color: var(--clr-neutral-100);
}

.btn-text {
    background-color: transparent;
    color: var(--clr-accent-500);
    padding: 0;
}

.btn-text:hover {
    color: var(--clr-accent-600);
    transform: translateX(4px);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--clr-primary-800);
    letter-spacing: -0.02em;
}

.logo span {
    color: var(--clr-accent-500);
}

.logo-icon {
    color: var(--clr-primary-500);
}

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

.logo-subtitle {
    font-size: 0.65rem;
    color: var(--clr-primary-400);
    font-weight: 600;
    margin-left: 2rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: -4px;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    font-weight: 500;
    color: var(--clr-neutral-600);
}

.nav-links a:hover {
    color: var(--clr-primary-500);
}

.nav-actions {
    display: flex;
    gap: 1rem;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background-image: url('assets/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    z-index: -2;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(15,28,20,0.95) 0%, rgba(15,28,20,0.8) 50%, rgba(15,28,20,0.2) 100%);
    z-index: -1;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

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

.hero-text h1 {
    color: var(--clr-white);
    margin-bottom: var(--spacing-md);
}

.hero-text p {
    font-size: 1.25rem;
    color: var(--clr-neutral-200);
    margin-bottom: var(--spacing-xl);
    max-width: 500px;
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(194, 154, 101, 0.2);
    color: var(--clr-accent-400);
    border: 1px solid rgba(194, 154, 101, 0.4);
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-lg);
}

.hero-cta {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.hero-stats {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    justify-self: end;
    max-width: 320px;
    width: 100%;
}

/* Glassmorphism Cards */
.glass {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    color: var(--clr-white);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.glass-dark {
    background: rgba(15, 28, 20, 0.8);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    color: var(--clr-white);
}

.stat-icon {
    background: var(--clr-accent-500);
    color: var(--clr-primary-900);
    padding: 0.75rem;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-info h3 {
    color: var(--clr-white);
    font-size: 1.125rem;
    margin-bottom: 0.25rem;
}
.stat-info p {
    margin: 0;
    color: var(--clr-neutral-200);
    font-size: 0.875rem;
}

/* Features Section */
.features-section {
    position: relative;
    z-index: 1;
}

.section-header {
    max-width: 600px;
    margin: 0 auto var(--spacing-3xl);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    background: var(--clr-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--clr-neutral-100);
    transition: all var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--clr-accent-400);
}

.feature-icon-wrapper {
    width: 60px;
    height: 60px;
    background: var(--clr-neutral-50);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    color: var(--clr-primary-500);
    transition: all var(--transition-normal);
}

.feature-card:hover .feature-icon-wrapper {
    background: var(--clr-primary-500);
    color: var(--clr-white);
}

/* Platforms Section */
.platform-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.platform-list {
    list-style: none;
    margin-top: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.platform-list li {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.platform-list i {
    color: var(--clr-accent-500);
    margin-top: 0.25rem;
}

/* Abstract Mockup */
.app-mockup {
    width: 100%;
    aspect-ratio: 4/3;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.mockup-header {
    border-bottom: 1px solid rgba(255,255,255,0.1);
    padding: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.dots { display: flex; gap: 6px; }
.dots span { width: 10px; height: 10px; border-radius: 50%; background: rgba(255,255,255,0.2); }
.dots span:nth-child(1) { background: #ff5f56; }
.dots span:nth-child(2) { background: #ffbd2e; }
.dots span:nth-child(3) { background: #27c93f; }

.mockup-header .title {
    font-size: 0.75rem;
    color: rgba(255,255,255,0.5);
    font-weight: 500;
}

.mockup-body {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    flex: 1;
}

.mockup-chart {
    height: 80px;
    background: linear-gradient(90deg, rgba(194, 154, 101, 0.1), rgba(194, 154, 101, 0.4));
    border-radius: var(--radius-sm);
    border-bottom: 2px solid var(--clr-accent-500);
}

.mockup-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.m-card {
    height: 60px;
    background: rgba(255,255,255,0.05);
    border-radius: var(--radius-sm);
}

.mockup-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.m-item {
    height: 30px;
    background: rgba(255,255,255,0.02);
    border-radius: var(--radius-sm);
}

/* CTA Section */
.cta-section {
    background-color: var(--clr-primary-900);
    color: var(--clr-white);
    padding: var(--spacing-3xl) 0;
}

.cta-section h2 {
    color: var(--clr-white);
}

.cta-section p {
    font-size: 1.25rem;
    color: var(--clr-neutral-400);
    margin-bottom: var(--spacing-xl);
}

/* Footer */
.footer {
    background-color: var(--clr-white);
    padding: var(--spacing-3xl) 0 var(--spacing-md);
    border-top: 1px solid var(--clr-neutral-200);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
}

.footer-brand p {
    color: var(--clr-neutral-600);
    margin-top: var(--spacing-md);
    max-width: 300px;
}

.footer-links h4 {
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
}

.footer-links a {
    display: block;
    color: var(--clr-neutral-600);
    margin-bottom: var(--spacing-sm);
    font-size: 0.875rem;
}

.footer-links a:hover {
    color: var(--clr-primary-500);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--clr-neutral-200);
    color: var(--clr-neutral-400);
    font-size: 0.875rem;
}

/* Animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 { transition-delay: 150ms; }
.delay-2 { transition-delay: 300ms; }
.delay-3 { transition-delay: 450ms; }

/* Responsive */
@media (max-width: 992px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-text p {
        margin: 0 auto var(--spacing-xl);
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-stats {
        justify-self: center;
        flex-direction: row;
        max-width: 100%;
        justify-content: center;
    }
    
    .hero-overlay {
        background: linear-gradient(0deg, rgba(15,28,20,0.95) 0%, rgba(15,28,20,0.8) 100%);
    }

    .platform-content {
        grid-template-columns: 1fr;
    }

    .nav-links, .nav-actions {
        display: none; /* Add a hamburger menu for real implementation */
    }
}

@media (max-width: 768px) {
    .hero-stats {
        flex-direction: column;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

/* Student Portal Section */
.portal-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.portal-features-list {
    list-style: none;
    margin-top: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.portal-features-list li {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.portal-features-list i {
    color: var(--clr-primary-500);
    margin-top: 0.25rem;
}

@media (max-width: 992px) {
    .portal-content {
        grid-template-columns: 1fr;
    }
}