/* ===========================================
   Portfolio Website - Asymmetric Gallery Design
   =========================================== */

/* --- CSS Variables --- */
:root {
    /* Background layers */
    --bg-deepest: #080c14;
    --bg-primary: #0b1120;
    --bg-elevated: #111827;
    --bg-hover: #1a2744;

    /* Accent */
    --accent: #ff7a3d;
    --accent-dim: rgba(255, 122, 61, 0.15);
    --accent-glow: rgba(255, 122, 61, 0.25);

    /* Text */
    --text-primary: #e8edf5;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    /* Borders */
    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-accent: rgba(255, 122, 61, 0.3);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition: 0.25s ease;

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 48px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 15px;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.3;
}

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

img {
    display: block;
    max-width: 100%;
    height: auto;
}

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* --- Header --- */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(11, 17, 32, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-subtle);
    padding: var(--space-md) 0;
}

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

.logo a {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.nav-links a {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

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

.nav-contact {
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--border-accent);
    border-radius: 4px;
    color: var(--accent) !important;
}

.nav-contact:hover {
    background-color: var(--accent-dim);
}

.hamburger {
    display: none;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    transition: var(--transition);
}

/* --- Hero Section --- */
.hero {
    min-height: 45vh;
    display: flex;
    align-items: flex-end;
    padding-top: 100px;
    padding-bottom: var(--space-xl);
    background: linear-gradient(180deg, var(--bg-deepest) 0%, var(--bg-primary) 100%);
}

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

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.tagline {
    font-family: 'JetBrains Mono', monospace;
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: var(--accent);
    font-weight: 400;
}

/* --- Projects Section --- */
.projects {
    padding: var(--space-lg) 0 var(--space-xl);
}

/* Section Headers */
.section-header {
    margin-bottom: var(--space-lg);
    margin-top: var(--space-xl);
}

.section-header:first-child {
    margin-top: 0;
}

.section-header h2 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.section-header p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* --- Asymmetric Grid --- */
.project-gallery {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    grid-auto-rows: minmax(140px, auto);
    gap: var(--space-md);
}

/* Card Base */
.project-card {
    background-color: var(--bg-elevated);
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border-subtle);
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border-color: var(--border-accent);
}

/* Card Sizes */
.card-featured {
    grid-column: span 4;
    grid-row: span 2;
}

.card-large {
    grid-column: span 2;
    grid-row: span 2;
}

.card-medium {
    grid-column: span 2;
    grid-row: span 2;
}

.card-small {
    grid-column: span 2;
    grid-row: span 1;
}

/* Card Image */
.card-image {
    position: relative;
    overflow: hidden;
    background-color: var(--bg-hover);
}

.card-featured .card-image {
    height: 200px;
}

.card-large .card-image,
.card-medium .card-image {
    height: 160px;
}

.card-small .card-image {
    height: 80px;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition);
}

.project-card:hover .card-image img {
    transform: scale(1.03);
}

/* Image Placeholder */
.image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, var(--bg-hover) 0%, var(--bg-elevated) 100%);
}

.image-placeholder i {
    font-size: 2.5rem;
    color: var(--accent);
    opacity: 0.6;
}

.card-small .image-placeholder i {
    font-size: 1.5rem;
}

/* Card Content */
.card-content {
    padding: var(--space-md);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.card-featured .card-content {
    padding: var(--space-lg);
}

.card-small .card-content {
    padding: var(--space-sm) var(--space-md);
}

/* Tags */
.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    margin-bottom: var(--space-sm);
}

.tag {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 2px 8px;
    background-color: var(--accent-dim);
    color: var(--accent);
    border-radius: 3px;
}

.tag-hardware {
    background-color: rgba(59, 130, 246, 0.15);
    color: #60a5fa;
}

.tag-software {
    background-color: rgba(16, 185, 129, 0.15);
    color: #34d399;
}

/* Card Title */
.card-content h3 {
    font-size: 1.1rem;
    margin-bottom: var(--space-xs);
    color: var(--text-primary);
}

.card-featured .card-content h3 {
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
}

.card-small .card-content h3 {
    font-size: 0.95rem;
}

/* Card Description */
.card-content p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
    flex: 1;
}

.card-featured .card-content p {
    font-size: 0.95rem;
}

.card-small .card-content p {
    font-size: 0.8rem;
    line-height: 1.4;
}

/* Tech Stack */
.card-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-top: var(--space-sm);
    padding-top: var(--space-sm);
    border-top: 1px solid var(--border-subtle);
}

.card-tech span {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    color: var(--text-muted);
}

/* --- About Section --- */
.about {
    padding: var(--space-xl) 0;
    background-color: var(--bg-deepest);
    border-top: 1px solid var(--border-subtle);
}

.about-content {
    display: flex;
    gap: var(--space-xl);
    align-items: flex-start;
    max-width: 900px;
}

.about-image {
    flex-shrink: 0;
    width: 200px;
}

.about-image img {
    width: 100%;
    border-radius: 8px;
    border: 1px solid var(--border-subtle);
}

.about-text {
    flex: 1;
}

.about h2 {
    font-size: 1.75rem;
    margin-bottom: var(--space-md);
    color: var(--accent);
}

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

.about-text p:last-child {
    margin-bottom: 0;
}

@media screen and (max-width: 768px) {
    .about-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .about-image {
        width: 150px;
    }
}

/* --- Footer --- */
footer {
    padding: var(--space-lg) 0;
    border-top: 1px solid var(--border-subtle);
}

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

.footer-email {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.footer-email:hover {
    color: var(--accent);
}

.footer-social {
    display: flex;
    gap: var(--space-md);
}

.social-icon {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--bg-elevated);
    color: var(--text-secondary);
    font-size: 1rem;
    border: 1px solid var(--border-subtle);
}

.social-icon:hover {
    background-color: var(--accent);
    color: var(--bg-primary);
    border-color: var(--accent);
}

/* --- Animations --- */
.project-card {
    opacity: 0;
    transform: translateY(20px);
}

.project-card.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered animation delays */
.project-card:nth-child(1) { transition-delay: 0ms; }
.project-card:nth-child(2) { transition-delay: 50ms; }
.project-card:nth-child(3) { transition-delay: 100ms; }
.project-card:nth-child(4) { transition-delay: 150ms; }
.project-card:nth-child(5) { transition-delay: 200ms; }
.project-card:nth-child(6) { transition-delay: 250ms; }
.project-card:nth-child(7) { transition-delay: 300ms; }
.project-card:nth-child(8) { transition-delay: 350ms; }
.project-card:nth-child(9) { transition-delay: 400ms; }
.project-card:nth-child(10) { transition-delay: 450ms; }
.project-card:nth-child(11) { transition-delay: 500ms; }
.project-card:nth-child(12) { transition-delay: 550ms; }
.project-card:nth-child(13) { transition-delay: 600ms; }

/* --- Responsive Design --- */

/* Tablet - 4 columns */
@media screen and (max-width: 1024px) {
    .project-gallery {
        grid-template-columns: repeat(4, 1fr);
    }

    .card-featured {
        grid-column: span 4;
    }

    .card-large {
        grid-column: span 2;
    }
}

/* Small tablet - 2 columns */
@media screen and (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background-color: var(--bg-elevated);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: var(--space-lg);
        transition: var(--transition);
        z-index: 999;
    }

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

    .hamburger {
        display: flex;
        z-index: 1000;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .project-gallery {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-sm);
    }

    .card-featured,
    .card-large {
        grid-column: span 2;
    }

    .card-medium {
        grid-column: span 1;
        grid-row: span 1;
    }

    .card-small {
        grid-column: span 1;
    }

    .card-medium .card-image,
    .card-small .card-image {
        height: 100px;
    }

    .footer-content {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }
}

/* Mobile - single column for small cards */
@media screen and (max-width: 480px) {
    .container {
        padding: 0 var(--space-md);
    }

    .hero {
        min-height: 35vh;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .card-featured .card-content,
    .card-content {
        padding: var(--space-sm);
    }

    .card-featured .card-content h3 {
        font-size: 1.2rem;
    }

    .card-content h3 {
        font-size: 0.9rem;
    }

    .card-content p {
        font-size: 0.75rem;
    }
}