:root {
    --color-bg: #0f0f0f;
    --color-surface: #1a1a1a;
    --color-text: #e5e5e5;
    --color-text-muted: #999999;
    --color-primary: #3b82f6;
    --color-primary-hover: #60a5fa;
    --color-danger: #ef4444;
    --color-success: #22c55e;
    --color-border: #2a2a2a;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,0.3);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Navigation */
.navbar {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 0;
}

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

.nav-brand {
    font-weight: 600;
    font-size: 1.25rem;
    color: var(--color-text);
    text-decoration: none;
}

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

.nav-links a {
    color: var(--color-text-muted);
    text-decoration: none;
    transition: color 0.2s;
}

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

/* Main content */
main {
    flex: 1;
    padding: 2rem 0;
}

/* Hero */
.hero {
    text-align: center;
    padding: 3rem 0;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.hero p {
    color: var(--color-text-muted);
    font-size: 1.25rem;
}

/* Sections */
.section {
    margin-top: 3rem;
}

.section h2 {
    margin-bottom: 1.5rem;
}

/* App grid */
.app-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1rem;
}

.app-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.5rem;
    text-decoration: none;
    color: var(--color-text);
    transition: box-shadow 0.2s, transform 0.2s;
}

.app-card:hover {
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}

.app-icon {
    font-size: 2rem;
    display: block;
    margin-bottom: 0.5rem;
}

.app-card h3 {
    margin-bottom: 0.25rem;
}

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

/* Blog posts */
.post-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.post-preview {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.5rem;
}

.post-preview h2,
.post-preview h3 {
    margin-bottom: 0.25rem;
}

.post-preview h2 a,
.post-preview h3 a {
    color: var(--color-text);
    text-decoration: none;
}

.post-preview h2 a:hover,
.post-preview h3 a:hover {
    color: var(--color-primary);
}

.post-preview time {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.post-preview p {
    margin: 0.5rem 0;
}

/* Single post */
.post {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 2rem;
}

.post-header {
    margin-bottom: 2rem;
}

.post-header h1 {
    margin-bottom: 0.5rem;
}

.post-header time {
    color: var(--color-text-muted);
}

.post-content {
    line-height: 1.8;
}

.post-footer {
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
}

/* Photo grid */
.photo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
}

.photo-item {
    position: relative;
}

.photo-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: var(--radius);
}

.photo-item figcaption {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-top: 0.25rem;
}

.album-filter {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.album-tag {
    background: var(--color-bg);
    padding: 0.125rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    margin-left: 0.5rem;
}

/* Tags */
.tag {
    display: inline-block;
    background: #1e3a5f;
    color: #93c5fd;
    padding: 0.125rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    text-decoration: none;
    margin-right: 0.25rem;
    margin-bottom: 0.25rem;
}

.tag:hover {
    background: #2563eb;
}

.tag-filter {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.tag-filter .filter-label {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.photo-tags {
    margin-top: 0.25rem;
}

.post-tags-cell {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
}

.text-muted {
    color: var(--color-text-muted);
}

/* Lightbox */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.lightbox.active {
    display: flex;
}

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

.lightbox-content img {
    max-width: 90vw;
    max-height: 80vh;
    object-fit: contain;
}

.lightbox-caption {
    color: white;
    text-align: center;
    padding: 1rem;
    font-size: 1rem;
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
    position: absolute;
    background: none;
    border: none;
    color: white;
    font-size: 3rem;
    cursor: pointer;
    padding: 1rem;
    opacity: 0.7;
    transition: opacity 0.2s;
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
    opacity: 1;
}

.lightbox-close {
    top: 0;
    right: 0;
    font-size: 2.5rem;
}

.lightbox-prev {
    left: 0;
    top: 50%;
    transform: translateY(-50%);
}

.lightbox-next {
    right: 0;
    top: 50%;
    transform: translateY(-50%);
}

@media (max-width: 600px) {
    .lightbox-prev,
    .lightbox-next {
        font-size: 2rem;
        padding: 0.5rem;
    }

    .lightbox-close {
        font-size: 2rem;
    }
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-surface);
    color: var(--color-text);
    text-decoration: none;
    cursor: pointer;
    font-size: 0.9rem;
    transition: background 0.2s;
}

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

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

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

.btn-danger {
    background: var(--color-danger);
    border-color: var(--color-danger);
    color: white;
}

.btn-danger:hover {
    background: #b91c1c;
}

.btn-small {
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
}

.btn-active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

/* Admin */
.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.admin-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.admin-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.5rem;
    text-decoration: none;
    color: var(--color-text);
    transition: box-shadow 0.2s;
}

.admin-card:hover {
    box-shadow: var(--shadow);
}

.admin-card .count {
    font-size: 2rem;
    font-weight: 600;
    color: var(--color-primary);
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
}

.admin-table th,
.admin-table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.admin-table th {
    background: var(--color-bg);
    font-weight: 600;
}

.admin-table .actions {
    display: flex;
    gap: 0.5rem;
}

.badge {
    display: inline-block;
    padding: 0.125rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    background: var(--color-bg);
}

.badge-success {
    background: #14532d;
    color: #86efac;
}

/* Forms */
.form {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.5rem;
    max-width: 600px;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.25rem;
    font-weight: 500;
}

.form-group input[type="text"],
.form-group input[type="url"],
.form-group input[type="number"],
.form-group input[type="file"],
.form-group textarea {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 1rem;
    font-family: inherit;
}

.form-group textarea {
    resize: vertical;
}

.form-hint {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.form-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 1.5rem;
}

.upload-form {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1rem;
    margin-bottom: 1.5rem;
}

.form-row {
    display: flex;
    gap: 1rem;
    align-items: flex-end;
    flex-wrap: wrap;
}

.form-row .form-group {
    flex: 1;
    min-width: 150px;
    margin-bottom: 0;
}

.admin-photo-grid .photo-item {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 0.5rem;
}

.photo-delete {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
}

/* Footer */
.footer {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: 1rem 0;
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 600px) {
    .navbar .container {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-links {
        gap: 1rem;
    }

    .form-row {
        flex-direction: column;
    }

    .admin-table {
        font-size: 0.85rem;
    }

    .admin-table th,
    .admin-table td {
        padding: 0.5rem;
    }
}