/* ==========================================
   SRMacc Photography - Core Design System
   ========================================== */

:root {
    --bg-main: #0c0d0f;
    --bg-surface: #14161a;
    --bg-card: #1a1d24;
    --bg-elevated: #222630;
    --bg-glass: rgba(18, 20, 24, 0.75);
    
    --border-subtle: rgba(255, 255, 255, 0.08);
    --border-strong: rgba(255, 255, 255, 0.16);
    --border-focus: rgba(255, 255, 255, 0.4);
    
    --text-primary: #f4f4f6;
    --text-secondary: #a1a6b4;
    --text-muted: #6b7280;
    --text-inverse: #0c0d0f;
    
    --accent-primary: #f3f4f6;
    --accent-hover: #ffffff;
    --accent-glow: rgba(255, 255, 255, 0.15);
    --danger: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.12);
    --success: #10b981;
    
    --font-heading: 'Playfair Display', Georgia, serif;
    --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --shadow-subtle: 0 4px 20px rgba(0, 0, 0, 0.35);
    --shadow-elevated: 0 12px 40px rgba(0, 0, 0, 0.6);
    
    --transition-fast: 0.18s ease;
    --transition-smooth: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

body {
    font-family: var(--font-body);
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: inherit;
    text-decoration: none;
}

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

button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-subtle);
    padding: 0.5rem 1.5rem 0.5rem 0.65rem;
    transition: var(--transition-smooth);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    text-decoration: none;
}

.brand-initials {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    background: linear-gradient(135deg, #ffffff 0%, #a1a6b4 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    border: 1px solid var(--border-strong);
    padding: 0.2rem 0.6rem;
    border-radius: var(--radius-sm);
}

.brand-text {
    display: flex;
    flex-direction: column;
}

.brand-name {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 600;
    letter-spacing: 0.13em;
    color: var(--text-primary);
}

.brand-tagline {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--text-muted);
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 1.5rem;
}

.nav-item {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.admin-lock-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    color: var(--text-muted);
    border: 1px solid var(--border-subtle);
    transition: var(--transition-fast);
}

.admin-lock-btn:hover {
    color: var(--text-primary);
    border-color: var(--border-strong);
    background: var(--bg-card);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.65rem 1.25rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 0.9rem;
    cursor: pointer;
    border: 1px solid transparent;
    transition: var(--transition-fast);
    text-decoration: none;
}

.btn-primary {
    background-color: var(--accent-primary);
    color: var(--text-inverse);
    border-color: var(--accent-primary);
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    box-shadow: 0 0 15px var(--accent-glow);
}

.btn-secondary {
    background-color: var(--bg-card);
    color: var(--text-primary);
    border-color: var(--border-strong);
}

.btn-secondary:hover {
    background-color: var(--bg-elevated);
}

.btn-outline {
    background-color: transparent;
    color: var(--text-primary);
    border-color: var(--border-strong);
}

.btn-outline:hover {
    background-color: var(--bg-card);
}

.btn-ghost {
    background-color: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover {
    color: var(--text-primary);
    background-color: var(--bg-card);
}

.btn-sm {
    padding: 0.4rem 0.85rem;
    font-size: 0.82rem;
}

.btn-lg {
    padding: 0.85rem 1.75rem;
    font-size: 1rem;
    font-weight: 600;
}

.btn-block {
    width: 100%;
}

/* Main Layout */
.site-main {
    flex: 1;
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    padding: 2rem 1.5rem 4rem;
}

/* Gallery Hero */
.gallery-hero {
    text-align: center;
    padding: 3rem 1rem 2.5rem;
    max-width: 750px;
    margin: 0 auto;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 2.8rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0.75rem;
    line-height: 1.15;
}

.hero-bio {
    font-size: 1.05rem;
    color: var(--text-secondary);
    font-weight: 300;
    line-height: 1.6;
}

/* Filter Bar */
.gallery-filter-bar {
    display: flex;
    justify-content: center;
    margin-bottom: 2.5rem;
}

.filter-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    justify-content: center;
    background: var(--bg-surface);
    padding: 0.4rem 0.5rem;
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-subtle);
}

.filter-pill {
    padding: 0.45rem 1rem;
    border-radius: var(--radius-lg);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.filter-pill .count {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.filter-pill:hover {
    color: var(--text-primary);
}

.filter-pill.active {
    background-color: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-strong);
}

.filter-pill.active .count {
    color: var(--text-secondary);
}

/* Photo Masonry Grid */
.gallery-grid {
    column-count: 3;
    column-gap: 1.5rem;
}

@media (max-width: 1100px) {
    .gallery-grid {
        column-count: 2;
    }
}

@media (max-width: 650px) {
    .gallery-grid {
        column-count: 1;
    }
}

.photo-card {
    break-inside: avoid;
    margin-bottom: 1.5rem;
    cursor: pointer;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--bg-card);
    position: relative;
    transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.photo-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-elevated);
}

.photo-media-wrap {
    position: relative;
    width: 100%;
    overflow: hidden;
}

.photo-thumb {
    width: 100%;
    height: auto;
    object-fit: cover;
    transition: transform 0.5s ease;
    background: var(--bg-surface);
}

.photo-card:hover .photo-thumb {
    transform: scale(1.03);
}

.photo-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(12, 13, 15, 0.9) 0%, rgba(12, 13, 15, 0.3) 50%, transparent 100%);
    opacity: 0;
    transition: opacity var(--transition-smooth);
    display: flex;
    align-items: flex-end;
    padding: 1.5rem;
}

.photo-card:hover .photo-overlay {
    opacity: 1;
}

.overlay-content {
    transform: translateY(10px);
    transition: transform var(--transition-smooth);
    width: 100%;
}

.photo-card:hover .overlay-content {
    transform: translateY(0);
}

.overlay-category {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-muted);
    font-weight: 600;
    margin-bottom: 0.25rem;
    display: block;
}

.overlay-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.25;
    margin-bottom: 0.35rem;
}

.overlay-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.4;
}

/* Empty State */
.gallery-empty {
    text-align: center;
    padding: 6rem 1.5rem;
    max-width: 550px;
    margin: 0 auto;
}

.empty-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    border-radius: 50%;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
}

.gallery-empty h2 {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    margin-bottom: 0.75rem;
}

.gallery-empty p {
    color: var(--text-secondary);
    margin-bottom: 1.75rem;
}

/* Lightbox Modal */
.lightbox-modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-smooth);
}

.lightbox-modal.open {
    display: flex;
    opacity: 1;
}

.lightbox-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(8, 9, 11, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.lightbox-content {
    position: relative;
    z-index: 2;
    width: 95vw;
    height: 92vh;
    max-width: 1600px;
    display: grid;
    grid-template-columns: 1fr 360px;
    gap: 1.5rem;
    padding: 1rem;
}

@media (max-width: 960px) {
    .lightbox-content {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr auto;
        overflow-y: auto;
    }
}

.lightbox-image-wrap {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    height: 100%;
}

.lightbox-img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-elevated);
    transition: transform 0.25s ease;
}

.lightbox-spinner {
    position: absolute;
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    border-top-color: var(--accent-primary);
    animation: spin 0.8s linear infinite;
    display: none;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.lightbox-info {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    height: 100%;
}

.lightbox-category {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-muted);
    font-weight: 600;
}

.lightbox-title {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 600;
    margin: 0.4rem 0 1rem;
    line-height: 1.2;
}

.lightbox-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.75rem;
    white-space: pre-line;
}

.lightbox-exif {
    margin-top: auto;
    border-top: 1px solid var(--border-subtle);
    padding-top: 1.25rem;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.85rem;
}

.exif-chip {
    background: var(--bg-card);
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-subtle);
    display: flex;
    flex-direction: column;
}

.exif-chip-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.exif-chip-val {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-top: 0.1rem;
}

/* Lightbox Controls */
.lightbox-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    z-index: 10;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    color: var(--text-primary);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.lightbox-close:hover {
    background: var(--bg-elevated);
    border-color: var(--border-strong);
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    color: var(--text-primary);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.lightbox-nav:hover {
    background: var(--bg-elevated);
    border-color: var(--border-strong);
}

.lightbox-prev {
    left: 1.5rem;
}

.lightbox-next {
    right: calc(360px + 2.5rem);
}

@media (max-width: 960px) {
    .lightbox-next {
        right: 1.5rem;
    }
}

/* Photo Detail Page */
.detail-container {
    max-width: 1200px;
    margin: 0 auto;
}

.detail-nav-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.btn-back, .btn-nav-arrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.btn-back:hover, .btn-nav-arrow:hover {
    color: var(--text-primary);
}

.adjacent-nav {
    display: flex;
    gap: 1.5rem;
}

.detail-layout {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 2.5rem;
    align-items: start;
}

@media (max-width: 900px) {
    .detail-layout {
        grid-template-columns: 1fr;
    }
}

.detail-media {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-subtle);
}

.detail-img {
    width: 100%;
    height: auto;
}

.detail-sidebar {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 2rem;
}

.badge-category {
    display: inline-block;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-muted);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.detail-title {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    line-height: 1.2;
    margin-bottom: 0.4rem;
}

.detail-date {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.detail-description {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 2rem;
    white-space: pre-line;
}

.detail-exif-card {
    border-top: 1px solid var(--border-subtle);
    padding-top: 1.5rem;
    margin-top: 1.5rem;
}

.exif-heading {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.exif-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}

.exif-item {
    background: var(--bg-card);
    padding: 0.6rem 0.85rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-subtle);
}

.exif-label {
    display: block;
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

.exif-value {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-top: 0.1rem;
}

.detail-admin-actions {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-subtle);
}

/* Auth Pages */
.auth-container {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4rem 1rem;
}

.auth-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    max-width: 440px;
    width: 100%;
    box-shadow: var(--shadow-elevated);
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 1px solid var(--border-strong);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.25rem;
    color: var(--text-primary);
}

.auth-title {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.auth-subtitle {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.alert {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.88rem;
    margin-bottom: 1.5rem;
}

.alert-error {
    background: var(--danger-bg);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #fca5a5;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.4rem;
}

.form-input, .form-select, .form-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: var(--transition-fast);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 2px var(--accent-glow);
}

.password-input-wrap {
    position: relative;
}

.password-input-wrap .form-input {
    padding-right: 2.75rem;
}

.btn-toggle-password {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-toggle-password:hover {
    color: var(--text-primary);
}

.auth-footer {
    text-align: center;
    margin-top: 1.75rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--border-subtle);
}

.auth-back-link {
    font-size: 0.85rem;
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    transition: var(--transition-fast);
}

.auth-back-link:hover {
    color: var(--text-primary);
}

/* Footer */
.site-footer {
    border-top: 1px solid var(--border-subtle);
    padding: 2rem 1.5rem;
    background: var(--bg-surface);
    margin-top: auto;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-muted);
}

@media (max-width: 600px) {
    .site-header {
        padding: 0.4rem 1rem 0.4rem 0.5rem;
    }

    .footer-container {
        flex-direction: column;
        gap: 0.75rem;
        text-align: center;
    }
}

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

.footer-links a {
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

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