/* ============================================================
   OpenToolWall - Industrial Maker Theme
   Dark, workshop-inspired design
   ============================================================ */

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

:root {
    /* Dark industrial palette */
    --bg-primary:    #0f0f0f;
    --bg-secondary:  #1a1a1a;
    --bg-card:       #222222;
    --bg-elevated:   #2a2a2a;
    --bg-input:      #1e1e1e;

    --text-primary:  #e8e8e8;
    --text-secondary:#a0a0a0;
    --text-muted:    #666666;

    --accent:        #eea440;  /* OTW brand orange */
    --accent-hover:  #d4902e;
    --accent-glow:   rgba(238, 164, 64, 0.15);

    --success:       #4caf50;
    --error:         #ef5350;
    --warning:       #ff9800;
    --info:          #42a5f5;

    --border:        #333333;
    --border-light:  #444444;

    --radius:        6px;
    --radius-lg:     10px;
    --shadow:        0 2px 8px rgba(0,0,0,0.3);
    --shadow-lg:     0 8px 32px rgba(0,0,0,0.4);

    --font-sans:     'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono:     'JetBrains Mono', 'Fira Code', monospace;

    --container:     1200px;
    --header-height: 64px;
}

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

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

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

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

/* --- Container --- */
.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}
h1 { font-size: 2.5rem; margin-bottom: 1rem; }
h2 { font-size: 2rem; margin-bottom: 0.75rem; }
h3 { font-size: 1.5rem; margin-bottom: 0.5rem; }
h4 { font-size: 1.125rem; margin-bottom: 0.5rem; }

p { margin-bottom: 1rem; color: var(--text-secondary); }
strong { color: var(--text-primary); }

/* --- Header --- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    height: var(--header-height);
    backdrop-filter: blur(10px);
}

.header-inner {
    display: flex;
    align-items: center;
    height: 100%;
    gap: 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.125rem;
    white-space: nowrap;
}

.logo-icon {
    width: 40px;
    height: 40px;
    filter: invert(1) brightness(2);
}

.logo:hover { color: var(--text-primary); }
.logo:hover .logo-icon { filter: invert(0.7) sepia(1) saturate(5) hue-rotate(10deg) brightness(1.3); }

.footer-logo {
    width: 48px;
    height: 48px;
    filter: invert(1);
    margin-bottom: 0.5rem;
}

.main-nav {
    display: flex;
    gap: 0.25rem;
    flex: 1;
}

.nav-link {
    color: var(--text-secondary);
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.2s;
}
.nav-link:hover {
    color: var(--text-primary);
    background: var(--bg-elevated);
}

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

.cart-link {
    position: relative;
    padding: 0.5rem;
}
.cart-count {
    position: absolute;
    top: 0;
    right: -4px;
    background: var(--accent);
    color: var(--bg-primary);
    font-size: 0.625rem;
    font-weight: 700;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    display: none;
    align-items: center;
    justify-content: center;
}
.cart-count.has-items { display: flex; }

/* User menu */
.user-menu { position: relative; }

.user-menu-toggle {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 0.4rem 0.75rem;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
}

.user-dropdown {
    display: none;
    position: absolute;
    right: 0;
    top: 100%;
    margin-top: 0.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    min-width: 180px;
    box-shadow: var(--shadow-lg);
    z-index: 100;
}
.user-menu:hover .user-dropdown,
.user-dropdown:hover { display: block; }

.user-dropdown a {
    display: block;
    padding: 0.5rem 1rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}
.user-dropdown a:hover {
    background: var(--bg-elevated);
    color: var(--text-primary);
}
.user-dropdown hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 0.25rem 0;
}

.mobile-menu-toggle { display: none; }

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    border: 1px solid transparent;
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    white-space: nowrap;
    font-family: var(--font-sans);
}

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

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

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

.btn-sm { padding: 0.35rem 0.75rem; font-size: 0.8125rem; }
.btn-lg { padding: 0.875rem 2rem; font-size: 1rem; }

.btn-danger { background: var(--error); color: #fff; }
.btn-danger:hover { background: #d32f2f; color: #fff; }

.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #388e3c; color: #fff; }

/* --- Cards --- */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.card:hover {
    border-color: var(--border-light);
    box-shadow: var(--shadow);
}

.card-image {
    aspect-ratio: 4/3;
    background: var(--bg-secondary);
    overflow: hidden;
}
.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}
.card:hover .card-image img { transform: scale(1.03); }

.card-body { padding: 1rem; }
.card-title {
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}
.card-meta {
    font-size: 0.8125rem;
    color: var(--text-muted);
    display: flex;
    gap: 1rem;
}

/* --- Grid --- */
.grid {
    display: grid;
    gap: 1.5rem;
}
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

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

.form-label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.375rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.625rem 0.875rem;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 0.9375rem;
    font-family: var(--font-sans);
    transition: border-color 0.2s;
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-textarea { resize: vertical; min-height: 100px; }

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2.5rem;
}

.form-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.form-error {
    font-size: 0.75rem;
    color: var(--error);
    margin-top: 0.25rem;
}

/* --- Alerts --- */
.alert {
    padding: 0.75rem 0;
    font-size: 0.875rem;
    font-weight: 500;
}
.alert-error { background: rgba(239,83,80,0.1); color: var(--error); border-bottom: 1px solid rgba(239,83,80,0.2); }
.alert-success { background: rgba(76,175,80,0.1); color: var(--success); border-bottom: 1px solid rgba(76,175,80,0.2); }

/* --- Tags/Badges --- */
.tag {
    display: inline-block;
    padding: 0.2rem 0.5rem;
    font-size: 0.6875rem;
    font-weight: 600;
    border-radius: 3px;
    background: var(--bg-elevated);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}
.tag-accent { background: var(--accent-glow); color: var(--accent); }

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.625rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 100px;
    background: var(--bg-elevated);
    color: var(--text-secondary);
}

/* --- Section spacing --- */
.section { padding: 4rem 0; }
.section-sm { padding: 2rem 0; }
.section-header {
    margin-bottom: 2rem;
}
.section-header h2 {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.section-header h2::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
}

/* --- Hero --- */
.hero {
    position: relative;
    padding: 5rem 0;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    border-bottom: 1px solid var(--border);
    overflow: hidden;
}
.hero-content { position: relative; z-index: 1; max-width: 700px; }
.hero h1 {
    font-size: 3rem;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}
.hero h1 .accent { color: var(--accent); }
.hero .lead {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.7;
}
.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* --- Stats row --- */
.stats-row {
    display: flex;
    gap: 3rem;
    margin-top: 3rem;
}
.stat { text-align: center; }
.stat-value {
    font-size: 1.75rem;
    font-weight: 900;
    color: var(--accent);
}
.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* --- File detail page --- */
.file-detail { padding: 2rem 0; }
.file-detail-grid {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 2rem;
}
.file-viewer {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 4/3;
    display: flex;
    align-items: center;
    justify-content: center;
}
.file-sidebar { display: flex; flex-direction: column; gap: 1.5rem; }

.file-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}
.file-actions .btn { width: 100%; justify-content: center; }

.spec-table { width: 100%; }
.spec-table tr { border-bottom: 1px solid var(--border); }
.spec-table td {
    padding: 0.625rem 0;
    font-size: 0.875rem;
}
.spec-table td:first-child {
    color: var(--text-muted);
    width: 40%;
}

/* --- Shop product card --- */
.product-card .card-body { padding: 1.25rem; }
.product-price {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent);
}
.product-price .compare {
    font-size: 0.875rem;
    color: var(--text-muted);
    text-decoration: line-through;
    margin-left: 0.5rem;
}

/* --- Table --- */
.table {
    width: 100%;
    border-collapse: collapse;
}
.table th {
    text-align: left;
    padding: 0.75rem 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-secondary);
}
.table td {
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    border-bottom: 1px solid var(--border);
}
.table tr:hover td { background: var(--bg-elevated); }

/* --- Pagination --- */
.pagination {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    margin-top: 2rem;
}
.pagination a, .pagination span {
    padding: 0.5rem 0.875rem;
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid var(--border);
    color: var(--text-secondary);
}
.pagination a:hover { border-color: var(--accent); color: var(--accent); }
.pagination .active {
    background: var(--accent);
    color: var(--bg-primary);
    border-color: var(--accent);
}

/* --- Footer --- */
.site-content { flex: 1; }

.site-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 3rem 0 1.5rem;
    margin-top: 4rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-brand p {
    margin-top: 0.5rem;
    font-size: 0.875rem;
}
.footer-brand .logo-mark { display: inline-block; margin-bottom: 0.5rem; }

.footer-links h4 {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}
.footer-links a {
    display: block;
    color: var(--text-secondary);
    font-size: 0.875rem;
    padding: 0.25rem 0;
}
.footer-links a:hover { color: var(--accent); }

.footer-bottom {
    border-top: 1px solid var(--border);
    padding-top: 1.5rem;
    text-align: center;
}
.footer-bottom p {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

/* --- Like button --- */
.like-btn {
    background: none;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    transition: all 0.2s;
}
.like-btn:hover { border-color: var(--error); color: var(--error); }
.like-btn.liked { border-color: var(--error); color: var(--error); }

/* --- Upload / Drag Drop --- */
.dropzone {
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    padding: 3rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    background: var(--bg-input);
}
.dropzone:hover, .dropzone.drag-over {
    border-color: var(--accent);
    background: var(--accent-glow);
}
.dropzone-text {
    color: var(--text-muted);
    font-size: 0.9375rem;
}
.dropzone-text strong { color: var(--accent); }

/* --- Responsive --- */
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(3, 1fr); }
    .file-detail-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .hero h1 { font-size: 2rem; }
    .stats-row { gap: 1.5rem; flex-wrap: wrap; }
    .main-nav { display: none; }
    .mobile-menu-toggle { display: block; }
    .header-actions .btn { display: none; }
}

@media (max-width: 480px) {
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .hero { padding: 3rem 0; }
    .hero h1 { font-size: 1.75rem; }
    .footer-grid { grid-template-columns: 1fr; }
}

/* --- Mobile menu toggle --- */
.mobile-menu-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    display: none;
}
.mobile-menu-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    margin: 5px 0;
    transition: 0.3s;
}

/* --- Admin layout overrides --- */
.admin-layout { display: grid; grid-template-columns: 240px 1fr; min-height: calc(100vh - var(--header-height)); }
.admin-sidebar {
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    padding: 1.5rem 0;
}
.admin-sidebar a {
    display: block;
    padding: 0.625rem 1.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
}
.admin-sidebar a:hover, .admin-sidebar a.active {
    color: var(--text-primary);
    background: var(--bg-elevated);
    border-right: 2px solid var(--accent);
}
.admin-main { padding: 2rem; }
.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}