/* Modern Design Variables */
:root {
    /* Colors */
    --bg-color: #0f172a;
    --surface-color: #1e293b;
    --surface-hover: #334155;
    --primary-color: #38bdf8;
    --secondary-color: #818cf8;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --border-color: #334155;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;

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

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.75rem;
    --radius-lg: 1.5rem;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

a:hover {
    color: var(--secondary-color);
}

img {
    max-width: 100%;
    display: block;
    border-radius: var(--radius-sm);
}

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

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

h1 {
    font-size: 2.5rem;
    /* Reduced from 3.5rem */
    font-weight: 800;
    letter-spacing: -0.02em;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

h2 {
    font-size: 2.25rem;
    font-weight: 700;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    padding: var(--spacing-sm) 0;
}

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

.nav-brand {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-primary);
}

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

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
}

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

/* Hero Section */
.hero {
    min-height: 70vh;
    /* Reduced from 100vh */
    display: flex;
    align-items: center;
    padding-top: var(--spacing-lg);
    /* Reduced padding */
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 600px;
    z-index: 1;
}

.hero-role {
    font-size: 1.1rem;
    /* Slightly smaller */
    color: var(--secondary-color);
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.hero-description {
    font-size: 1rem;
    /* Slightly smaller */
    margin-bottom: var(--spacing-md);
    max-width: 500px;
}

.hero-image {
    position: absolute;
    right: 5%;
    /* Moved in slightly */
    top: 50%;
    transform: translateY(-50%);
    width: 300px;
    /* Fixed smaller width */
    height: 300px;
    /* Fixed height for circle/square */
    object-fit: cover;
    border-radius: 50%;
    /* Circular for more modest/personal look */
    opacity: 0.9;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.3);
    /* Removed mask-image for cleaner look */
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: var(--primary-color);
    color: var(--bg-color);
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(56, 189, 248, 0.3);
    color: var(--bg-color);
}

/* Portfolio Grid */
.portfolio-section {
    padding: var(--spacing-xl) 0;
}

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

.card {
    background-color: var(--surface-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    border: 1px solid var(--border-color);
    height: 100%;
    display: flex;
    flex-direction: column;
}

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

.card-image {
    width: 100%;
    height: 200px;
    object-fit: contain;
}

.card-content {
    padding: var(--spacing-sm);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.card-category {
    font-size: 0.75rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.card-description {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    flex-grow: 1;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: auto;
    margin-bottom: var(--spacing-sm);
}

.badge {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    background-color: rgba(56, 189, 248, 0.1);
    color: var(--primary-color);
    border-radius: var(--radius-sm);
    font-weight: 500;
    border: 1px solid rgba(56, 189, 248, 0.2);
}

.card-link {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

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

.card-link i {
    transition: transform var(--transition-fast);
}

.card-link:hover i {
    transform: translateX(4px);
}

/* About Section */
.about-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--surface-color);
}

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

/* Footer */
.footer {
    padding: var(--spacing-md) 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
    margin-top: var(--spacing-xl);
    color: var(--text-secondary);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

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

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

/* Responsive */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    .hero {
        padding-top: var(--spacing-lg);
        flex-direction: column;
        text-align: center;
    }

    .hero-content {
        margin-bottom: var(--spacing-lg);
    }

    .hero-image {
        position: relative;
        width: 100%;
        height: 300px;
        transform: none;
        mask-image: none;
        -webkit-mask-image: none;
        border-radius: var(--radius-md);
    }

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

    .nav-links {
        display: none;
        /* Mobile menu to be implemented if needed, for now simple hide */
    }
}