/* ========================================
   RESET & BASE
   ======================================== */

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

* {
    margin: 0;
    padding: 0;
}

html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    line-height: 1.5;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    color: var(--text);
    background: var(--bg);
    transition: background 0.8s ease, color 0.3s ease;
}

img, picture, video, canvas, svg {
    display: block;
    max-width: 100%;
}

input, button, textarea, select {
    font: inherit;
}

p, h1, h2, h3, h4, h5, h6 {
    overflow-wrap: break-word;
}

/* ========================================
   CSS VARIABLES
   ======================================== */

:root {
    /* Spacing scale */
    --space-xs: clamp(0.5rem, 1vw, 0.75rem);
    --space-sm: clamp(1rem, 2vw, 1.5rem);
    --space-md: clamp(2rem, 4vw, 3rem);
    --space-lg: clamp(3rem, 6vw, 5rem);
    --space-xl: clamp(4rem, 8vw, 8rem);

    /* Type scale */
    --text-xs: clamp(0.75rem, 1vw, 0.875rem);
    --text-sm: clamp(0.875rem, 1.2vw, 1rem);
    --text-base: clamp(1rem, 1.5vw, 1.125rem);
    --text-lg: clamp(1.25rem, 2vw, 1.5rem);
    --text-xl: clamp(1.75rem, 3vw, 2.5rem);
    --text-2xl: clamp(2.5rem, 5vw, 4rem);

    /* Layout */
    --max-width: 1400px;
    --content-width: 720px;
    --gutter: clamp(1.5rem, 5vw, 3rem);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.6s ease;
}

/* Light theme (default) */
:root {
    --text: #1a1a1a;
    --text-muted: #666;
    --bg: #fafafa;
    --surface: #fff;
    --border: #e0e0e0;
    --accent: #1a1a1a;
}

/* Dark theme */
@media (prefers-color-scheme: dark) {
    :root {
        --text: #e8e8e8;
        --text-muted: #999;
        --bg: #0a0a0a;
        --surface: #1a1a1a;
        --border: #333;
        --accent: #fff;
    }
}

/* Background themes (applied via JS) */
body.theme-a {
    background: linear-gradient(135deg, #fafafa 0%, #f0f0f0 100%);
}

body.theme-b {
    background: linear-gradient(160deg, #f8f9fa 0%, #e9ecef 50%, #dee2e6 100%);
}

body.theme-c {
    background:
        repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0,0,0,0.02) 2px, rgba(0,0,0,0.02) 4px),
        linear-gradient(180deg, #fefefe 0%, #f5f5f5 100%);
}

body.theme-d {
    background: radial-gradient(circle at 30% 20%, #fafafa 0%, #ececec 100%);
}

body.theme-e {
    background:
        linear-gradient(125deg, #f9f9f9 0%, #f0f0f0 50%, #e8e8e8 100%),
        repeating-linear-gradient(45deg, transparent, transparent 10px, rgba(0,0,0,0.01) 10px, rgba(0,0,0,0.01) 20px);
    background-blend-mode: normal;
}

body.theme-f {
    background: linear-gradient(to bottom, #ffffff 0%, #f7f7f7 40%, #efefef 100%);
}

@media (prefers-color-scheme: dark) {
    body.theme-a {
        background: linear-gradient(135deg, #0a0a0a 0%, #151515 100%);
    }
    body.theme-b {
        background: linear-gradient(160deg, #0c0c0c 0%, #1a1a1a 50%, #222 100%);
    }
    body.theme-c {
        background:
            repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(255,255,255,0.02) 2px, rgba(255,255,255,0.02) 4px),
            linear-gradient(180deg, #0f0f0f 0%, #050505 100%);
    }
    body.theme-d {
        background: radial-gradient(circle at 30% 20%, #1a1a1a 0%, #0a0a0a 100%);
    }
    body.theme-e {
        background:
            linear-gradient(125deg, #121212 0%, #0d0d0d 50%, #080808 100%),
            repeating-linear-gradient(45deg, transparent, transparent 10px, rgba(255,255,255,0.01) 10px, rgba(255,255,255,0.01) 20px);
    }
    body.theme-f {
        background: linear-gradient(to bottom, #0d0d0d 0%, #0a0a0a 40%, #050505 100%);
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ========================================
   NAVIGATION
   ======================================== */

.site-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) var(--gutter);
    max-width: var(--max-width);
    margin: 0 auto;
}

.nav-logo {
    font-size: var(--text-lg);
    font-weight: 500;
    color: var(--text);
    text-decoration: none;
    letter-spacing: -0.02em;
}

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

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: var(--text-base);
    transition: color var(--transition-base);
    position: relative;
}

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

.nav-links a[aria-current="page"] {
    color: var(--text);
}

.nav-links a:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 4px;
}

/* ========================================
   HERO
   ======================================== */

.hero {
    text-align: center;
    padding: var(--space-xl) var(--gutter);
    max-width: var(--content-width);
    margin: 0 auto;
}

.hero-title {
    font-size: var(--text-2xl);
    font-weight: 400;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-sm);
}

.hero-subtitle {
    font-size: var(--text-lg);
    color: var(--text-muted);
    font-weight: 300;
    line-height: 1.6;
}

/* ========================================
   PAGE HEADER
   ======================================== */

.page-header {
    text-align: center;
    padding: var(--space-lg) var(--gutter) var(--space-md);
    max-width: var(--content-width);
    margin: 0 auto;
}

.page-header h1 {
    font-size: var(--text-xl);
    font-weight: 400;
    letter-spacing: -0.02em;
}

/* ========================================
   SECTIONS
   ======================================== */

.featured-work {
    padding: var(--space-lg) var(--gutter);
    max-width: var(--max-width);
    margin: 0 auto;
}

.full-gallery {
    padding: var(--space-md) var(--gutter) var(--space-xl);
    max-width: var(--max-width);
    margin: 0 auto;
}

.section-title {
    font-size: var(--text-sm);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    text-align: center;
    margin-bottom: var(--space-lg);
    color: var(--text-muted);
}

/* ========================================
   GALLERY GRID
   ======================================== */

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

@media (min-width: 768px) {
    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
        gap: var(--space-lg);
    }
}

.gallery-item {
    position: relative;
    overflow: hidden;
    background: var(--surface);
    aspect-ratio: 4 / 5;
    cursor: pointer;
    transition: transform var(--transition-base);
}

.gallery-item:hover {
    transform: translateY(-4px);
}

.gallery-item:focus-within {
    outline: 2px solid var(--accent);
    outline-offset: 4px;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: opacity var(--transition-base);
}

.gallery-item:hover img {
    opacity: 0.92;
}

/* ========================================
   CTA
   ======================================== */

.cta-container {
    text-align: center;
    margin-top: var(--space-xl);
}

.btn-primary {
    display: inline-block;
    padding: var(--space-sm) var(--space-md);
    background: var(--accent);
    color: var(--bg);
    text-decoration: none;
    font-size: var(--text-base);
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: opacity var(--transition-base), transform var(--transition-fast);
}

.btn-primary:hover {
    opacity: 0.85;
    transform: translateY(-2px);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 4px;
}

.btn-primary:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ========================================
   PROSE (About/Contact pages)
   ======================================== */

.about-content,
.contact-content {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 0 var(--gutter) var(--space-xl);
}

.prose {
    font-size: var(--text-base);
    line-height: 1.75;
    color: var(--text);
}

.prose p {
    margin-bottom: var(--space-md);
}

.prose a {
    color: var(--text);
    text-decoration: underline;
    text-decoration-color: var(--text-muted);
    transition: text-decoration-color var(--transition-base);
}

.prose a:hover {
    text-decoration-color: var(--text);
}

.contact-info {
    margin-top: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--border);
}

.contact-info p {
    margin-bottom: var(--space-sm);
}

/* ========================================
   CONTACT FORM (Placeholder)
   ======================================== */

.form-placeholder {
    margin-top: var(--space-xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--border);
}

.form-note {
    text-align: center;
    color: var(--text-muted);
    font-size: var(--text-sm);
    margin-bottom: var(--space-md);
}

.contact-form {
    max-width: 500px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: var(--space-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--space-xs);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-muted);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--space-sm);
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    font-size: var(--text-base);
    transition: border-color var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.form-group input:disabled,
.form-group textarea:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ========================================
   LIGHTBOX
   ======================================== */

.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.95);
    z-index: 9999;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.lightbox.active {
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
}

.lightbox-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.lightbox-content img {
    max-width: 100%;
    max-height: 85vh;
    object-fit: contain;
    user-select: none;
}

.lightbox-counter {
    margin-top: var(--space-sm);
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--text-sm);
    font-weight: 300;
    letter-spacing: 0.05em;
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
    position: fixed;
    background: transparent;
    border: none;
    color: white;
    font-size: 3rem;
    cursor: pointer;
    padding: var(--space-sm);
    transition: opacity var(--transition-base);
    z-index: 10000;
    line-height: 1;
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
    opacity: 0.7;
}

.lightbox-close:focus-visible,
.lightbox-prev:focus-visible,
.lightbox-next:focus-visible {
    outline: 2px solid white;
    outline-offset: 4px;
}

.lightbox-close {
    top: var(--space-sm);
    right: var(--space-sm);
    font-weight: 300;
}

.lightbox-prev {
    left: var(--space-sm);
    top: 50%;
    transform: translateY(-50%);
    font-weight: 300;
}

.lightbox-next {
    right: var(--space-sm);
    top: 50%;
    transform: translateY(-50%);
    font-weight: 300;
}

@media (max-width: 768px) {
    .lightbox-close,
    .lightbox-prev,
    .lightbox-next {
        font-size: 2rem;
        padding: var(--space-xs);
    }
}

/* ========================================
   FOOTER
   ======================================== */

.site-footer {
    text-align: center;
    padding: var(--space-lg) var(--gutter);
    color: var(--text-muted);
    font-size: var(--text-sm);
    border-top: 1px solid var(--border);
    margin-top: var(--space-xl);
}