/* SteelRules Machine Passport POC — Stylesheet */

:root {
    --steel-900: #1a1d23;
    --steel-800: #2d3039;
    --steel-700: #3f4350;
    --steel-600: #555a6a;
    --steel-500: #6e7485;
    --steel-400: #8b92a5;
    --steel-300: #b0b7c9;
    --steel-200: #d2d7e3;
    --steel-100: #ebedf3;
    --steel-50:  #f5f6f9;
    --accent:    #2563eb;
    --accent-light: #3b82f6;
    --accent-bg: #eff6ff;
    --success:   #16a34a;
    --warning:   #d97706;
    --danger:    #dc2626;
    --info:      #0891b2;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--steel-800);
    background: var(--steel-50);
    line-height: 1.6;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* --- Demo banner --- */
.demo-banner {
    background: var(--warning);
    color: #fff;
    text-align: center;
    padding: 4px 12px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
}

/* --- Navigation --- */
.nav {
    background: var(--steel-900);
    color: #fff;
    display: flex;
    align-items: center;
    padding: 0 24px;
    height: 56px;
    gap: 32px;
}
.nav-brand {
    font-weight: 700;
    font-size: 1.1rem;
    color: #fff;
    white-space: nowrap;
}
.nav-brand:hover { text-decoration: none; }
.nav-links { display: flex; gap: 20px; }
.nav-links a {
    color: var(--steel-300);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.15s;
}
.nav-links a:hover { color: #fff; text-decoration: none; }
.nav-search {
    margin-left: auto;
    display: flex;
    gap: 6px;
}
.nav-search input {
    background: var(--steel-800);
    border: 1px solid var(--steel-700);
    color: #fff;
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 0.85rem;
    width: 220px;
}
.nav-search input::placeholder { color: var(--steel-500); }
.nav-search button {
    background: var(--accent);
    color: #fff;
    border: none;
    padding: 6px 14px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85rem;
}

/* --- Layout --- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
}
.page-header {
    margin-bottom: 24px;
}
.page-header h1 {
    font-size: 1.6rem;
    color: var(--steel-900);
}
.page-header .subtitle {
    color: var(--steel-500);
    font-size: 0.9rem;
}

/* --- Breadcrumb --- */
.breadcrumb {
    display: flex;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--steel-500);
    margin-bottom: 16px;
    flex-wrap: wrap;
}
.breadcrumb a { color: var(--accent); }
.breadcrumb .sep { color: var(--steel-400); }

/* --- Cards / Grid --- */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}
.card {
    background: #fff;
    border: 1px solid var(--steel-200);
    border-radius: 8px;
    padding: 20px;
    transition: box-shadow 0.15s;
}
.card:hover {
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}
.card h3 {
    font-size: 1rem;
    margin-bottom: 4px;
    color: var(--steel-900);
}
.card h3 a { color: var(--steel-900); }
.card .meta {
    font-size: 0.82rem;
    color: var(--steel-500);
}

/* --- Stat grid (dashboard) --- */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 12px;
    margin-bottom: 32px;
}
.stat-card {
    background: #fff;
    border: 1px solid var(--steel-200);
    border-radius: 8px;
    padding: 16px;
    text-align: center;
}
.stat-card .number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent);
    line-height: 1.2;
}
.stat-card .label {
    font-size: 0.78rem;
    color: var(--steel-500);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

/* --- Tables --- */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 16px;
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--steel-200);
}
.data-table th, .data-table td {
    padding: 10px 14px;
    text-align: left;
    border-bottom: 1px solid var(--steel-100);
    font-size: 0.88rem;
}
.data-table th {
    background: var(--steel-50);
    font-weight: 600;
    color: var(--steel-700);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--steel-50); }

/* --- Machine detail sections --- */
.section {
    background: #fff;
    border: 1px solid var(--steel-200);
    border-radius: 8px;
    margin-bottom: 20px;
    overflow: hidden;
}
.section-header {
    padding: 14px 20px;
    background: var(--steel-50);
    border-bottom: 1px solid var(--steel-200);
    display: flex;
    align-items: center;
    gap: 10px;
}
.section-header h2 {
    font-size: 1rem;
    color: var(--steel-800);
}
.section-body {
    padding: 20px;
}

/* --- Badges / Tags --- */
.badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}
.badge-active   { background: #dcfce7; color: var(--success); }
.badge-trial    { background: #fef3c7; color: var(--warning); }
.badge-retired  { background: #fecaca; color: var(--danger); }
.badge-approved { background: #dcfce7; color: var(--success); }
.badge-high     { background: #fecaca; color: var(--danger); }
.badge-moderate { background: #fef3c7; color: var(--warning); }
.badge-low      { background: #e0f2fe; color: var(--info); }
.badge-info     { background: #e0f2fe; color: var(--info); }
.badge-best     { background: #dcfce7; color: var(--success); }

/* --- Key-value pairs --- */
.kv-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 8px 24px;
}
.kv-item {
    display: flex;
    gap: 8px;
    padding: 4px 0;
    font-size: 0.88rem;
}
.kv-item .kv-label {
    color: var(--steel-500);
    font-weight: 500;
    min-width: 120px;
    flex-shrink: 0;
}
.kv-item .kv-value {
    color: var(--steel-800);
    word-break: break-word;
}

/* --- Quirk cards --- */
.quirk-card {
    border-left: 4px solid var(--steel-300);
    padding: 14px 18px;
    margin-bottom: 12px;
    background: #fff;
    border-radius: 0 6px 6px 0;
}
.quirk-card.severity-high   { border-left-color: var(--danger); }
.quirk-card.severity-moderate { border-left-color: var(--warning); }
.quirk-card.severity-low    { border-left-color: var(--info); }
.quirk-card h4 { font-size: 0.95rem; margin-bottom: 4px; }
.quirk-card p { font-size: 0.85rem; color: var(--steel-600); }

/* --- Thumbnail grid --- */
.thumb-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
}
.thumb-card {
    text-align: center;
    background: #fff;
    border: 1px solid var(--steel-200);
    border-radius: 8px;
    padding: 12px;
    transition: box-shadow 0.15s;
}
.thumb-card:hover { box-shadow: 0 2px 8px rgba(0,0,0,0.08); }
.thumb-card img {
    max-width: 100%;
    height: 140px;
    object-fit: contain;
    border-radius: 4px;
    margin-bottom: 8px;
    background: var(--steel-50);
}
.thumb-card .title {
    font-size: 0.82rem;
    color: var(--steel-700);
    font-weight: 500;
}
.thumb-card .meta {
    font-size: 0.75rem;
    color: var(--steel-500);
}

/* --- Section nav (anchor links on machine page) --- */
.section-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}
.section-nav a {
    display: inline-block;
    padding: 6px 14px;
    background: #fff;
    border: 1px solid var(--steel-200);
    border-radius: 6px;
    font-size: 0.82rem;
    color: var(--steel-700);
    transition: all 0.15s;
}
.section-nav a:hover {
    background: var(--accent-bg);
    border-color: var(--accent);
    color: var(--accent);
    text-decoration: none;
}

/* --- Footer --- */
.footer {
    text-align: center;
    padding: 24px;
    color: var(--steel-400);
    font-size: 0.78rem;
    border-top: 1px solid var(--steel-200);
    margin-top: 40px;
}

/* --- Attachment list --- */
.attachment-list {
    list-style: none;
}
.attachment-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    border-bottom: 1px solid var(--steel-100);
    font-size: 0.88rem;
}
.attachment-list li:last-child { border-bottom: none; }
.attachment-icon {
    width: 32px;
    height: 32px;
    background: var(--steel-100);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    color: var(--steel-500);
    flex-shrink: 0;
    text-transform: uppercase;
    font-weight: 600;
}

/* --- Recipe card --- */
.recipe-card {
    background: #fff;
    border: 1px solid var(--steel-200);
    border-radius: 8px;
    padding: 16px;
}
.recipe-card h4 { font-size: 0.95rem; margin-bottom: 6px; }
.recipe-card .meta { font-size: 0.82rem; color: var(--steel-500); }

/* --- Empty state --- */
.empty-state {
    text-align: center;
    padding: 32px;
    color: var(--steel-400);
    font-size: 0.9rem;
}

/* --- Nav user info --- */
.nav-user {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-left: 16px;
    white-space: nowrap;
}
.nav-user-name {
    color: var(--steel-300);
    font-size: 0.82rem;
}
.nav-user-email {
    color: var(--steel-500);
    font-size: 0.75rem;
}
.nav-logout {
    color: var(--steel-400);
    font-size: 0.82rem;
    padding: 4px 10px;
    border: 1px solid var(--steel-700);
    border-radius: 4px;
}
.nav-logout:hover { color: #fff; border-color: var(--steel-500); text-decoration: none; }

/* --- Admin page --- */
.admin-actions {
    display: flex;
    gap: 8px;
}
.btn {
    display: inline-block;
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 0.82rem;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid transparent;
    text-decoration: none;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-light); text-decoration: none; }
.btn-sm { padding: 4px 10px; font-size: 0.78rem; }
.btn-outline {
    background: transparent;
    color: var(--accent);
    border-color: var(--accent);
}
.btn-outline:hover { background: var(--accent-bg); text-decoration: none; }
.btn-danger-outline {
    background: transparent;
    color: var(--danger);
    border-color: var(--danger);
}
.btn-danger-outline:hover { background: #fef2f2; text-decoration: none; }

.credential-box {
    background: #f0fdf4;
    border: 1px solid #86efac;
    border-radius: 8px;
    padding: 24px;
    margin: 24px 0;
    max-width: 500px;
}
.credential-box h3 { margin-bottom: 12px; color: var(--success); }
.credential-box .cred-field {
    font-family: "SF Mono", Monaco, "Cascadia Code", monospace;
    background: #fff;
    padding: 8px 12px;
    border-radius: 4px;
    margin: 6px 0;
    font-size: 0.9rem;
    border: 1px solid #bbf7d0;
}

/* --- Form styles --- */
.form-card {
    background: #fff;
    border: 1px solid var(--steel-200);
    border-radius: 8px;
    padding: 24px;
    max-width: 500px;
}
.form-group {
    margin-bottom: 16px;
}
.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--steel-700);
    margin-bottom: 4px;
}
.form-group input, .form-group select {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--steel-300);
    border-radius: 6px;
    font-size: 0.88rem;
}
.form-group input:focus, .form-group select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--accent-bg);
}
.form-check {
    display: flex;
    align-items: center;
    gap: 8px;
}
.form-check input[type="checkbox"] { width: auto; }

/* --- Responsive --- */
@media (max-width: 768px) {
    .nav { padding: 0 12px; gap: 12px; }
    .nav-search input { width: 140px; }
    .container { padding: 16px; }
    .kv-grid { grid-template-columns: 1fr; }
}