/* public/css/index.css
 * Highly Modern, Premium Vanilla CSS Framework for Frontend
 */

:root {
    /* Color Palette */
    --primary-color: #3b82f6;      /* Vibrant Blue */
    --primary-hover: #2563eb;
    --primary-light: #eff6ff;
    
    --secondary-color: #10b981;    /* Emerald Green */
    --secondary-hover: #059669;
    --secondary-light: #ecfdf5;

    --accent-color: #8b5cf6;       /* Purple */
    --accent-hover: #7c3aed;
    --accent-light: #f5f3ff;

    --dark-bg: #0f172a;            /* Slate 900 */
    --dark-surface: #1e293b;       /* Slate 800 */
    --dark-border: #334155;        /* Slate 700 */

    --light-bg: #f8fafc;           /* Slate 50 */
    --light-surface: #ffffff;
    --light-border: #e2e8f0;       /* Slate 200 */

    --text-primary-light: #0f172a;
    --text-secondary-light: #64748b;
    --text-primary-dark: #f8fafc;
    --text-secondary-dark: #cbd5e1;

    /* Spacing & Layout */
    --container-max-width: 1200px;
    --section-padding: 5rem 2rem;
    --border-radius-sm: 0.375rem;
    --border-radius-md: 0.75rem;
    --border-radius-lg: 1.5rem;
    --border-radius-full: 9999px;

    /* Typography */
    --font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
    --font-family-heading: 'Outfit', var(--font-family-base);

    /* Shadows & Transitions */
    --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);
    --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.4);
    
    --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);
    
    /* Glassmorphism */
    --glass-bg-light: rgba(255, 255, 255, 0.8);
    --glass-border-light: rgba(255, 255, 255, 0.5);
    --glass-bg-dark: rgba(15, 23, 42, 0.8);
    --glass-border-dark: rgba(51, 65, 85, 0.5);
    --glass-blur: blur(12px);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-base);
    background-color: var(--light-bg);
    color: var(--text-primary-light);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: inherit;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(2rem, 4vw, 3rem); letter-spacing: -0.01em; }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
p { margin-bottom: 1.5rem; color: var(--text-secondary-light); }
a { color: var(--primary-color); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--primary-hover); }

/* Layout Utilities */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding: var(--section-padding);
}

/* Header & Navigation (Glassmorphism) */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: var(--glass-bg-light);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--glass-border-light);
    transition: all var(--transition-normal);
}

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

.site-logo {
    font-family: var(--font-family-heading);
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--primary-color);
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.site-logo span {
    color: var(--text-primary-light);
}

.main-nav {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    font-weight: 600;
    color: var(--text-primary-light);
    position: relative;
    padding: 0.5rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width var(--transition-normal);
}

.nav-link:hover::after {
    width: 100%;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    font-family: var(--font-family-base);
    border-radius: var(--border-radius-full);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-transform: capitalize;
    letter-spacing: 0.5px;
    gap: 0.5rem;
}

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

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

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

.btn-outline:hover {
    background-color: var(--primary-light);
    transform: translateY(-2px);
}

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

/* Dynamic background gradients for Hero */
.hero::before {
    content: '';
    position: absolute;
    top: -20%;
    left: -10%;
    width: 50vw;
    height: 50vw;
    background: radial-gradient(circle, var(--primary-light) 0%, transparent 70%);
    border-radius: 50%;
    z-index: -1;
    filter: blur(60px);
    animation: float 10s ease-in-out infinite alternate;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -10%;
    right: -10%;
    width: 40vw;
    height: 40vw;
    background: radial-gradient(circle, var(--secondary-light) 0%, transparent 70%);
    border-radius: 50%;
    z-index: -1;
    filter: blur(60px);
    animation: float 12s ease-in-out infinite alternate-reverse;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(30px, 50px) scale(1.1); }
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content h1 {
    color: var(--text-primary-light);
    margin-bottom: 1.5rem;
}

.hero-content h1 span {
    color: transparent;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary-light);
    margin-bottom: 2.5rem;
    max-width: 90%;
}

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

.hero-image {
    position: relative;
    border-radius: var(--border-radius-lg);
    background: linear-gradient(135deg, var(--primary-light), white);
    padding: 1rem;
    box-shadow: var(--shadow-xl);
    transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
    transition: transform var(--transition-slow);
}

.hero-image:hover {
    transform: perspective(1000px) rotateY(0) rotateX(0);
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius-md);
    display: block;
}

/* Modern Cards */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.glass-card {
    background: var(--light-surface);
    border: 1px solid var(--light-border);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.glass-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.glass-card:hover::before {
    opacity: 1;
}

.card-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--border-radius-md);
    background: var(--primary-light);
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    transition: all var(--transition-normal);
}

.glass-card:hover .card-icon {
    background: var(--primary-color);
    color: white;
    transform: scale(1.1) rotate(5deg);
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.card-text {
    color: var(--text-secondary-light);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

/* Subtle Badge */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: var(--border-radius-full);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: var(--primary-light);
    color: var(--primary-color);
    margin-bottom: 1rem;
}

/* Call to Action Section */
.cta-section {
    background: linear-gradient(135deg, var(--dark-bg), var(--dark-surface));
    color: var(--text-primary-dark);
    text-align: center;
    border-radius: var(--border-radius-lg);
    margin: 4rem auto;
    max-width: var(--container-max-width);
    padding: 4rem 2rem;
    position: relative;
    overflow: hidden;
}

.cta-section p {
    color: var(--text-secondary-dark);
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(59,130,246,0.1) 0%, transparent 60%);
    z-index: 0;
}

.cta-content {
    position: relative;
    z-index: 1;
}

/* Footer */
.site-footer {
    background-color: var(--dark-bg);
    color: var(--text-secondary-dark);
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--dark-border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-col h4 {
    color: var(--text-primary-dark);
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--text-secondary-dark);
}

.footer-links a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--dark-border);
    font-size: 0.875rem;
}

/* Utilities */
.text-center { text-align: center; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.mt-8 { margin-top: 2rem; }

/* Responsive Design */
@media (max-width: 992px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 3rem;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .main-nav {
        display: none; /* Mobile menu hidden by default in this template */
    }
    
    /* Simple mobile menu trigger */
    .mobile-menu-btn {
        display: block;
        background: none;
        border: none;
        color: var(--text-primary-light);
        font-size: 1.5rem;
        cursor: pointer;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

/* Simple animations array */
.fade-in-up {
    animation: fadeInUp 0.8s ease-out forwards;
    opacity: 0;
    transform: translateY(20px);
}

.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }

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