:root {
    --bg-primary: #0f1117;
    --bg-secondary: #1a1d27;
    --bg-elevated: #22263a;
    --bg-hover: #2a2f45;
    --text-primary: #e8eaed;
    --text-secondary: #9aa0b4;
    --text-muted: #6b7289;
    --accent: #22d3ee;
    --accent-hover: #06b6d4;
    --accent-muted: rgba(34, 211, 238, 0.15);
    --success: #34d399;
    --error: #f87171;
    --warning: #fbbf24;
    --border: #2d3348;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

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

a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.2s;
}

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

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

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header */
.site-header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    gap: 1.5rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.1rem;
}

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

.logo-image {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
}

.logo-text {
    white-space: nowrap;
}

.logo-icon {
    color: var(--accent);
    font-size: 1.4rem;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.main-nav a:not(.btn) {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9rem;
}

.main-nav a:not(.btn):hover {
    color: var(--text-primary);
}

.header-auth {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.user-greeting {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.875rem;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    font-family: var(--font);
    text-decoration: none;
}

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

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

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

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

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

.btn-danger:hover {
    opacity: 0.9;
    color: white;
}

.btn-sm {
    padding: 0.4rem 0.875rem;
    font-size: 0.8rem;
}

.btn-block {
    width: 100%;
}

/* Main content */
.main-content {
    flex: 1;
    padding: 2rem 0 4rem;
}

/* Alerts */
.alert {
    max-width: 1280px;
    margin: 0 auto 1.5rem;
    padding: 0.875rem 1.25rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
}

.alert-success {
    background: rgba(52, 211, 153, 0.15);
    border: 1px solid rgba(52, 211, 153, 0.3);
    color: var(--success);
}

.alert-error {
    background: rgba(248, 113, 113, 0.15);
    border: 1px solid rgba(248, 113, 113, 0.3);
    color: var(--error);
}

/* Hero */
.hero {
    text-align: center;
    padding: 3rem 0 2rem;
}

.hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    background: linear-gradient(135deg, var(--text-primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Filters */
.filters-bar {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    margin-bottom: 2rem;
    position: sticky;
    top: 80px;
    z-index: 50;
}

.filters-form {
    display: grid;
    grid-template-columns: 2fr repeat(5, 1fr) auto;
    gap: 0.75rem;
    align-items: end;
}

.filter-group label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.35rem;
}

.filter-group input,
.filter-group select,
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.625rem 0.875rem;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font);
    font-size: 0.875rem;
    transition: border-color 0.2s;
}

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

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* Tool grid */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.tool-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}

.tool-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
    border-color: var(--accent-muted);
}

.tool-card-link {
    color: inherit;
    text-decoration: none;
    display: block;
}

.tool-card-image {
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--bg-elevated);
}

.tool-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.tool-card:hover .tool-card-image img {
    transform: scale(1.05);
}

.tool-card-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.tool-card-body {
    padding: 1.25rem;
}

.tool-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.tool-card-header h3 {
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.3;
}

.tool-rating {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    flex-shrink: 0;
}

.rating-value {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.stars {
    color: var(--warning);
    font-size: 0.85rem;
    letter-spacing: -1px;
}

.star-empty {
    opacity: 0.3;
}

.tool-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 0.75rem;
}

.badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.badge-pricing.badge-free {
    background: rgba(52, 211, 153, 0.15);
    color: var(--success);
}

.badge-pricing.badge-paid {
    background: rgba(251, 191, 36, 0.15);
    color: var(--warning);
}

.badge-pricing.badge-subscription {
    background: rgba(168, 85, 247, 0.15);
    color: #a855f7;
}

.badge-deployment {
    background: var(--accent-muted);
    color: var(--accent);
}

.badge-category {
    background: var(--bg-elevated);
    color: var(--text-secondary);
}

.tool-card-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Tool detail */
.tool-detail {
    max-width: 900px;
    margin: 0 auto;
}

.tool-detail-hero {
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: 2rem;
    border: 1px solid var(--border);
}

.tool-detail-hero img {
    width: 100%;
    max-height: 500px;
    object-fit: cover;
}

.tool-detail-header {
    margin-bottom: 2rem;
}

.tool-detail-header h1 {
    font-size: 2rem;
    margin-bottom: 0.75rem;
}

.tool-detail-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
    margin-bottom: 1rem;
}

.tool-detail-actions {
    margin-top: 1rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
}

.tool-detail-actions .form-hint {
    width: 100%;
    margin: 0;
}

.social-share {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
}

.social-share-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

.social-share-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
}

.social-share-copy.is-copied {
    color: var(--success);
    border-color: var(--success);
}

.tool-detail-actions .btn {
    margin-right: 0.5rem;
}

.tool-detail-description {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 2rem;
    color: var(--text-secondary);
    line-height: 1.7;
    white-space: pre-wrap;
}

.tool-os-list {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* Comments */
.comments-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
}

.comments-section h2 {
    font-size: 1.25rem;
    margin-bottom: 1.25rem;
}

.comment-form {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.comment-item {
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
}

.comment-item:last-child {
    border-bottom: none;
}

.comment-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.comment-author {
    font-weight: 600;
    color: var(--text-secondary);
}

/* Rating form */
.rating-form {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.rating-form select {
    padding: 0.4rem 0.75rem;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font);
}

/* Auth pages */
.auth-container {
    max-width: 420px;
    margin: 2rem auto;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
}

.auth-container h1 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    text-align: center;
}

.auth-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

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

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.35rem;
}

.form-error {
    color: var(--error);
    font-size: 0.8rem;
    margin-top: 0.25rem;
}

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

.auth-divider {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1.5rem 0;
    color: var(--text-muted);
    font-size: 0.8rem;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
}

.oauth-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.btn-oauth {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

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

.auth-footer {
    text-align: center;
    margin-top: 1.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Submit form */
.submit-form {
    max-width: 700px;
    margin: 0 auto;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
}

.submit-form h1 {
    margin-bottom: 0.5rem;
}

.submit-form .form-intro {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
    width: auto;
    accent-color: var(--accent);
}

.os-fields {
    display: none;
    margin-top: 0.5rem;
}

.os-fields.visible {
    display: block;
}

.image-preview {
    margin-top: 0.75rem;
    border-radius: var(--radius-sm);
    overflow: hidden;
    max-width: 300px;
    display: none;
}

.image-preview.visible {
    display: block;
}

.image-preview img {
    width: 100%;
}

/* Screenshot manager */
.screenshot-manager label:first-child {
    display: block;
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.screenshot-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 1rem;
    margin: 0.75rem 0 1rem;
}

.screenshot-item {
    position: relative;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: var(--bg-secondary);
}

.screenshot-item img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
}

.screenshot-remove {
    position: absolute;
    top: 0.35rem;
    right: 0.35rem;
    width: 1.75rem;
    height: 1.75rem;
    border: none;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.65);
    color: #fff;
    font-size: 1.1rem;
    line-height: 1;
    cursor: pointer;
}

.screenshot-remove:hover {
    background: var(--error);
}

.screenshot-primary {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.screenshot-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.screenshot-count {
    margin: 0;
}

/* Tool detail gallery */
.tool-screenshot-thumbs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin: -1rem 0 2rem;
}

.tool-screenshot-thumb {
    width: 88px;
    height: 56px;
    padding: 0;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    cursor: pointer;
    background: var(--bg-secondary);
    opacity: 0.75;
    transition: border-color 0.2s, opacity 0.2s;
}

.tool-screenshot-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.tool-screenshot-thumb:hover,
.tool-screenshot-thumb.active {
    border-color: var(--accent);
    opacity: 1;
}

/* Empty state */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
}

.empty-state h2 {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

/* Footer */
.site-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 2rem 0;
    margin-top: auto;
}

.footer-inner {
    text-align: center;
}

.footer-inner p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.footer-sub {
    color: var(--text-muted) !important;
    font-size: 0.8rem !important;
    margin-top: 0.25rem;
}

/* Page header */
.page-header {
    text-align: center;
    padding: 4rem 2rem;
}

.page-header h1 {
    margin-bottom: 0.75rem;
}

.page-header p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.results-count {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .filters-form {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .header-inner {
        flex-wrap: wrap;
        height: auto;
        padding: 0.75rem 0;
    }

    .main-nav {
        order: 3;
        width: 100%;
        justify-content: center;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .filters-form {
        grid-template-columns: 1fr;
    }

    .filters-bar {
        position: static;
    }
}