/* =========================================
   Base & Custom Properties (Tokens)
   ========================================= */
   :root {
    /* Colors - Dark Mode Theme */
    --bg-color: #0f172a;
    --bg-color-lighter: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    
    --accent-primary: #6366f1; /* Indigo */
    --accent-secondary: #8b5cf6; /* Violet */
    --accent-gradient: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    
    /* Layout & Spacing */
    --container-max-width: 1100px;
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 9999px;
    
    /* Typography */
    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
    
    /* Effects */
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.08);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* =========================================
   Typography & Base Styles
   ========================================= */
h1, h2, h3, h4 {
    color: var(--text-primary);
    line-height: 1.2;
    font-weight: 800;
}

h1 {
    font-size: clamp(1.8rem, 3.5vw, 2.5rem);
    margin-bottom: 1rem;
}

h2 {
    font-size: clamp(2rem, 3vw, 2.5rem);
    margin-bottom: 0.5rem;
}

h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-size: 1.125rem;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

.container {
    width: 90%;
    max-width: var(--container-max-width);
    margin: 0 auto;
}

/* =========================================
   Buttons & Badges
   ========================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 4px 14px 0 rgba(99, 102, 241, 0.39);
}

.btn-primary:hover {
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

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

.btn-outline:hover {
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.05);
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(99, 102, 241, 0.15);
    color: var(--accent-primary);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

/* =========================================
   Navigation
   ========================================= */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    background: var(--glass-bg);
    border-bottom: 1px solid var(--glass-border);
    padding: 1rem 0;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

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

.nav-links {
    list-style: none;
    display: flex;
    gap: 2rem;
}

.nav-links a {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

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

/* =========================================
   Hero Section
   ========================================= */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 5rem;
    gap: 4rem;
    position: relative;
}

.hero-content {
    flex: 1;
    z-index: 2;
}

.hero h1 span {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.25rem;
    max-width: 500px;
    margin-bottom: 2.5rem;
}

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

.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

/* Background blob for modern effect */
.blob-shape {
    width: 400px;
    height: 400px;
    background: var(--accent-gradient);
    border-radius: 40% 60% 70% 30% / 40% 50% 60% 50%;
    filter: blur(60px);
    opacity: 0.4;
    animation: morph 8s ease-in-out infinite;
}

@keyframes morph {
    0%, 100% { border-radius: 40% 60% 70% 30% / 40% 50% 60% 50%; }
    34% { border-radius: 70% 30% 50% 50% / 30% 30% 70% 70%; }
    67% { border-radius: 100% 60% 60% 100% / 100% 100% 60% 60%; }
}

/* =========================================
   Projects Section
   ========================================= */
.projects-section {
    padding: 8rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--bg-color-lighter);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(255, 255, 255, 0.15);
}

.project-image {
    width: 100%;
    height: 200px;
    position: relative;
    /* Styles are applied inline in HTML for demonstration */
}

.project-info {
    padding: 1.5rem;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.tag {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.2rem 0.6rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
}

.project-link {
    display: inline-block;
    margin-top: 1rem;
    color: var(--accent-primary);
    font-weight: 600;
    font-size: 0.95rem;
}

.project-link:hover {
    color: var(--accent-secondary);
}

/* =========================================
   Contact Section
   ========================================= */
.contact-section {
    padding: 4rem 0 8rem;
}

.contact-box {
    background: var(--bg-color-lighter);
    border: 1px solid var(--glass-border);
    padding: 4rem 2rem;
    border-radius: var(--radius-lg);
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

.contact-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--accent-gradient);
}

.contact-box h2 {
    margin-bottom: 1rem;
}

.contact-box p {
    margin-bottom: 2rem;
    max-width: 500px;
    margin-inline: auto;
}

/* =========================================
   Footer
   ========================================= */
footer {
    border-top: 1px solid var(--glass-border);
    padding: 2rem 0;
    background: var(--bg-color-lighter);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-content p {
    margin: 0;
    font-size: 0.9rem;
}

.social-links {
    display: flex;
    gap: 1.5rem;
}

.social-links a {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 600;
}

.social-links a:hover {
    color: var(--text-primary);
}

/* =========================================
   Responsive Design
   ========================================= */
@media (max-width: 768px) {
    .nav-links {
        display: none; /* In a real app, add a hamburger menu */
    }
    
    .hero {
        flex-direction: column;
        justify-content: center;
        text-align: center;
        padding-top: 8rem;
    }
    
    .hero p {
        margin-inline: auto;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .blob-shape {
        width: 300px;
        height: 300px;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}