/* Modern Design System - Variables & Reset */
:root {
    /* Color Palette */
    --primary: #3b82f6;
    /* Vivid Blue */
    --primary-glow: rgba(59, 130, 246, 0.5);
    --secondary: #10b981;
    /* Emerald */

    --bg-main: #0f172a;
    /* Slate 900 */
    --bg-secondary: #1e293b;
    /* Slate 800 */
    --bg-glass: rgba(30, 41, 59, 0.7);

    --text-main: #f8fafc;
    /* Slate 50 */
    --text-secondary: #94a3b8;
    /* Slate 400 */
    --text-accent: #38bdf8;
    /* Sky 400 */

    /* Typography */
    --font-main: 'Inter', sans-serif;
    --font-heading: 'Outfit', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease-in-out;
}

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

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

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

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-main);
}

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

/* Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: var(--primary);
    color: white;
    border-radius: 8px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: var(--transition-base);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--primary-glow);
}

/* Glassmorphism */
.glass {
    background: var(--bg-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1rem 0;
}

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

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
}

.dot {
    color: var(--primary);
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
    list-style: none;
    align-items: center;
}

.nav-links a {
    font-weight: 500;
    font-size: 0.95rem;
}

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

.btn-small {
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    font-size: 0.9rem;
}

.btn-small:hover {
    background: var(--primary);
    color: white;
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 60px;
    /* Offset for fixed nav */
    background: radial-gradient(circle at top right, rgba(59, 130, 246, 0.1), transparent 40%),
        radial-gradient(circle at bottom left, rgba(16, 185, 129, 0.05), transparent 40%);
}

.hero-content {
    max-width: 800px;
}

.hero-title {
    font-size: 4rem;
    margin-bottom: var(--spacing-sm);
    line-height: 1.1;
}

.highlight {
    background: linear-gradient(to right, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    max-width: 600px;
}

.hero-btns {
    display: flex;
    gap: var(--spacing-sm);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--text-secondary);
    color: var(--text-main);
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-base);
}

.btn-outline:hover {
    border-color: var(--text-main);
}

/* Sections General */
.section {
    padding: var(--spacing-xl) 0;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.text-center {
    text-align: center;
}

/* About Section */
.about-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.about-image img {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.about-text p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

.stats {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Projects Section */
.section-dark {
    background: var(--bg-secondary);
}

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

.project-card {
    background: var(--bg-main);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: var(--spacing-md);
    transition: var(--transition-base);
}

.project-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.project-content h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

.project-desc {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    font-size: 0.95rem;
}

.project-tags {
    display: flex;
    gap: 0.5rem;
    margin-bottom: var(--spacing-sm);
    flex-wrap: wrap;
}

.project-tags span {
    font-size: 0.8rem;
    padding: 0.2rem 0.6rem;
    background: rgba(59, 130, 246, 0.1);
    color: var(--primary);
    border-radius: 20px;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-main);
    font-size: 0.9rem;
    font-weight: 600;
}

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

/* Footer & Socials */
footer {
    padding: var(--spacing-lg) 0 var(--spacing-md);
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-links a {
    font-size: 1.5rem;
    color: var(--text-secondary);
}

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

/* Responsive */
@media (max-width: 768px) {
    .btn {
        width: 100%;
        text-align: center;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .about-container {
        grid-template-columns: 1fr;
    }

    .nav-links {
        display: none;
    }
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* Mobile Nav Styles */
@media (max-width: 768px) {
    .hamburger {
        display: block;
        font-size: 1.5rem;
        cursor: pointer;
    }

    .nav-links {
        position: fixed;
        top: 60px;
        right: -100%;
        width: 100%;
        height: calc(100vh - 60px);
        background: var(--bg-secondary);
        flex-direction: column;
        justify-content: center;
        transition: 0.3s ease-in-out;
    }

    .nav-links.active {
        right: 0;
    }
}

@media (min-width: 769px) {
    .hamburger {
        display: none;
    }
}
/* Slideshow Transition */
#about-slideshow {
    transition: opacity 0.5s ease-in-out;
    opacity: 1;
}

#about-slideshow.fade-out {
    opacity: 0;
}

/* Inviting Hero Background Animation */
@keyframes gradient-move {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.hero {
    background: radial-gradient(circle at top right, rgba(59, 130, 246, 0.15), transparent 50%),
                radial-gradient(circle at bottom left, rgba(16, 185, 129, 0.1), transparent 50%),
                linear-gradient(120deg, var(--bg-main), var(--bg-secondary));
    background-size: 200% 200%;
    animation: gradient-move 15s ease infinite;
}

/* Staggered Entrance for Hero Text */
.hero-content > * {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease-out forwards;
}

.hero-title { animation-delay: 0.2s; }
.hero-subtitle { animation-delay: 0.4s; }
.hero-btns { animation-delay: 0.6s; }

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

/* Button Glow Effect */
.btn {
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.3);
}

.btn:hover {
    box-shadow: 0 0 25px rgba(59, 130, 246, 0.6);
}