/* Družstvo vlastníků - refined minimalist style */

:root {
    --color-bg: #f7f5f0;
    --color-surface: #ffffff;
    --color-ink: #1a1f2e;
    --color-ink-soft: #4a5163;
    --color-muted: #8a8e9a;
    --color-line: #e3dfd5;
    --color-line-soft: #efece4;
    --color-accent: #2a4a6b;
    --color-accent-soft: #e9eef4;
    --color-success: #2d6a3f;
    --color-warn:    #8a5a14;
    --color-error:   #9b2c2c;

    --radius: 4px;
    --shadow-sm: 0 1px 2px rgba(26, 31, 46, 0.04);
    --shadow-md: 0 4px 12px rgba(26, 31, 46, 0.06);

    --font-display: 'Fraunces', Georgia, serif;
    --font-body: 'Manrope', -apple-system, system-ui, sans-serif;

    --font-size-body: 16px;
    --line-height-body: 1.6;
    --line-height-heading: 1.15;
    --letter-spacing-heading: -0.02em;
    --font-weight-heading: 500;
    --font-weight-body: 400;

    /* Spacing škála (4px base) — dle design systému; zavedeny jen on-scale hodnoty */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.5rem;
    --space-6: 2rem;
    --space-7: 2.5rem;
    --space-8: 3rem;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
    font-family: var(--font-body);
    background: var(--color-bg);
    color: var(--color-ink);
    line-height: var(--line-height-body);
    font-size: var(--font-size-body);
    font-weight: var(--font-weight-body);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 var(--space-5);
    width: 100%;
}

main.container {
    flex: 1;
    padding-top: var(--space-6);
    padding-bottom: var(--space-8);
}

/* Typography */
h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: var(--font-weight-heading);
    color: var(--color-ink);
    margin: 0 0 var(--space-3);
    line-height: var(--line-height-heading);
    letter-spacing: var(--letter-spacing-heading);
}
h1 { font-size: 2rem; }
h2 { font-size: 1.4rem; margin-top: var(--space-6); }
h3 { font-size: 1.15rem; margin-top: var(--space-5); }

p { margin: 0 0 var(--space-4); }
a { color: var(--color-accent); text-decoration: underline; text-underline-offset: 2px; }
a:hover { color: var(--color-ink); }
small, .muted { color: var(--color-muted); font-size: 0.875rem; }

/* Header */
.site-header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-line);
}
.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-4);
    padding-bottom: var(--space-4);
    gap: var(--space-5);
    flex-wrap: wrap;
}
.brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
    color: var(--color-ink);
}
.brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px; height: 36px;
    background: var(--color-accent);
    color: white;
    font-family: var(--font-display);
    font-weight: 600;
    border-radius: var(--radius);
    font-size: 0.95rem;
    letter-spacing: 0.02em;
}
.brand-text {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 500;
}
.main-nav {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    flex-wrap: wrap;
}
.main-nav a {
    text-decoration: none;
    color: var(--color-ink-soft);
    font-size: 0.95rem;
    transition: color 0.15s ease;
}
.main-nav a:hover { color: var(--color-ink); }
.main-nav .admin-link {
    color: var(--color-accent);
    font-weight: 600;
}
.user-chip {
    font-size: 0.85rem;
    color: var(--color-muted);
    padding-left: var(--space-3);
    border-left: 1px solid var(--color-line);
}

/* Footer */
.site-footer {
    border-top: 1px solid var(--color-line);
    background: var(--color-surface);
    padding: var(--space-5) 0;
    font-size: 0.875rem;
    color: var(--color-muted);
}
.site-footer a { color: var(--color-ink-soft); }

/* Buttons */
.btn-primary, .btn-secondary, button.btn-primary, button.btn-secondary {
    display: inline-block;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 500;
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius);
    text-decoration: none;
    border: 1px solid transparent;
    cursor: pointer;
    transition: background 0.15s ease, border-color 0.15s ease;
}
.btn-primary {
    background: var(--color-accent);
    color: white;
    border-color: var(--color-accent);
}
.btn-primary:hover {
    background: var(--color-ink);
    border-color: var(--color-ink);
    color: white;
}
.btn-secondary {
    background: transparent;
    color: var(--color-ink);
    border-color: var(--color-line);
}
.btn-secondary:hover {
    border-color: var(--color-ink-soft);
}
.btn-link {
    color: var(--color-ink-soft);
    text-decoration: none;
    font-size: 0.95rem;
}
.btn-link:hover { color: var(--color-ink); }
.btn-danger {
    background: var(--color-error);
    color: white;
    border: none;
    padding: 0.4rem 0.85rem;
    border-radius: var(--radius);
    font-size: 0.85rem;
    cursor: pointer;
}

/* Cards / surfaces */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius);
    padding: var(--space-5);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--space-5);
}
.card-compact { padding: var(--space-4); }

/* Hero */
.hero {
    padding: var(--space-8) 0 var(--space-7);
    border-bottom: 1px solid var(--color-line);
    margin-bottom: var(--space-6);
}
.hero h1 {
    font-size: 2.5rem;
    margin-bottom: var(--space-2);
}
.hero p.lead {
    font-size: 1.1rem;
    color: var(--color-ink-soft);
    max-width: 60ch;
}

/* Forms */
form .field {
    margin-bottom: var(--space-4);
}
label {
    display: block;
    font-size: 0.875rem;
    color: var(--color-ink-soft);
    margin-bottom: 0.35rem;
    font-weight: 500;
}
input[type=text], input[type=email], input[type=password],
input[type=date], input[type=number], select, textarea {
    width: 100%;
    padding: 0.55rem var(--space-3);
    border: 1px solid var(--color-line);
    border-radius: var(--radius);
    background: var(--color-surface);
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--color-ink);
}
input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-soft);
}
textarea { resize: vertical; min-height: 120px; }
.checkbox-row {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin: var(--space-2) 0;
}
.checkbox-row label {
    margin: 0;
    font-weight: 400;
    color: var(--color-ink);
}

/* Tables */
table.data {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius);
    overflow: hidden;
}
table.data th, table.data td {
    text-align: left;
    padding: 0.65rem 0.85rem;
    border-bottom: 1px solid var(--color-line-soft);
    font-size: 0.95rem;
}
table.data th {
    background: var(--color-bg);
    font-weight: 600;
    color: var(--color-ink-soft);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
table.data tr:last-child td { border-bottom: none; }
table.data tr:hover td { background: var(--color-line-soft); }

/* Flash messages */
.flash {
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius);
    margin-bottom: var(--space-4);
    border-left: 4px solid;
    background: var(--color-surface);
}
.flash-success { border-color: var(--color-success); }
.flash-error   { border-color: var(--color-error); }
.flash-info    { border-color: var(--color-accent); }
.flash-warn    { border-color: var(--color-warn); }

/* Layout helpers */
.row { display: flex; gap: var(--space-5); flex-wrap: wrap; }
.col { flex: 1; min-width: 250px; }
.spacer { height: 1rem; }
.between { display: flex; justify-content: space-between; align-items: center; gap: var(--space-4); flex-wrap: wrap; }
.actions { display: flex; gap: var(--space-2); flex-wrap: wrap; }

/* Badges */
.badge {
    display: inline-block;
    font-size: 0.75rem;
    padding: 0.15rem var(--space-2);
    border-radius: 999px;
    background: var(--color-line-soft);
    color: var(--color-ink-soft);
    font-weight: 600;
    letter-spacing: 0.02em;
}
.badge-success { background: #d9eddb; color: var(--color-success); }
.badge-warn    { background: #f5e6c8; color: var(--color-warn); }
.badge-accent  { background: var(--color-accent-soft); color: var(--color-accent); }

/* Stání grid (přehled) */
.stani-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: var(--space-3);
}
.stani-card {
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius);
    padding: 0.85rem var(--space-4);
    text-decoration: none;
    color: var(--color-ink);
    display: block;
    transition: border-color 0.15s ease, transform 0.15s ease;
}
.stani-card:hover { border-color: var(--color-accent); transform: translateY(-1px); }
.stani-card .stani-cislo {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 500;
}
.stani-card .stani-vlastnik {
    font-size: 0.85rem;
    color: var(--color-muted);
    margin-top: var(--space-1);
}
.stani-card.muj { border-color: var(--color-accent); background: var(--color-accent-soft); }

/* Zprávy */
.message {
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius);
    padding: var(--space-4) 1.25rem;
    margin-bottom: var(--space-3);
}
.message.unread { border-left: 4px solid var(--color-accent); }
.message-meta {
    font-size: 0.8rem;
    color: var(--color-muted);
    margin-bottom: 0.35rem;
    display: flex;
    gap: var(--space-3);
    flex-wrap: wrap;
}
.message-subject { font-weight: 600; font-size: 1.05rem; margin-bottom: 0.35rem; }
.message-body { white-space: pre-wrap; color: var(--color-ink-soft); }

/* Tabs (jednoduché) */
.tabs {
    display: flex;
    gap: 0;
    border-bottom: 1px solid var(--color-line);
    margin-bottom: var(--space-5);
}
.tabs a {
    padding: 0.65rem var(--space-4);
    text-decoration: none;
    color: var(--color-ink-soft);
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    font-weight: 500;
    font-size: 0.95rem;
}
.tabs a.active {
    color: var(--color-ink);
    border-bottom-color: var(--color-accent);
}

/* Login page narrow */
.narrow {
    max-width: 420px;
    margin: var(--space-8) auto;
}

/* Responsive */
@media (max-width: 640px) {
    .hero h1 { font-size: 1.8rem; }
    h1 { font-size: 1.5rem; }
    .header-inner { gap: var(--space-3); }
    .main-nav { gap: var(--space-3); font-size: 0.9rem; }
    .user-chip { display: none; }
}

/* === Téma: ChatBuilders (tmavé) === */
body.tema-dark {
    --color-bg: #0d0d0d;
    --color-surface: #1a1a1a;
    --color-ink: #f0f0f0;
    --color-ink-soft: #b0b0b0;
    --color-muted: #666666;
    --color-line: #2a2a2a;
    --color-line-soft: #222222;
    --color-accent: #f5c518;
    --color-accent-soft: #2a2200;
    --color-success: #3a8a50;
    --color-warn:    #c87d1a;
    --color-error:   #c0392b;

    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.4);

    --font-display: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-size-body: 15px;
    --line-height-body: 1.65;
    --letter-spacing-heading: -0.03em;
    --font-weight-heading: 600;
}

body.tema-dark input[type=text],
body.tema-dark input[type=email],
body.tema-dark input[type=password],
body.tema-dark input[type=date],
body.tema-dark input[type=number],
body.tema-dark select,
body.tema-dark textarea {
    background: var(--color-bg);
    color: var(--color-ink);
    border-color: var(--color-line);
}

body.tema-dark .btn-primary {
    color: #000;
}

body.tema-dark .badge-success { background: #1a3d22; color: #5cb87a; }
body.tema-dark .badge-warn    { background: #3d2a0a; color: #e0a040; }
body.tema-dark .badge-accent  { background: var(--color-accent-soft); color: var(--color-accent); }

body.tema-dark .stani-card.muj {
    background: var(--color-accent-soft);
    border-color: var(--color-accent);
}

/* === Téma: Ocean (modrá/tyrkysová) === */
body.tema-ocean {
    --color-bg: #eef6fb;
    --color-surface: #ffffff;
    --color-ink: #0d2b3e;
    --color-ink-soft: #2e5e78;
    --color-muted: #7a9db0;
    --color-line: #c8e0ed;
    --color-line-soft: #dceef7;
    --color-accent: #0077b6;
    --color-accent-soft: #d0eaf7;
    --color-success: #1a7a45;
    --color-warn: #9a6200;
    --color-error: #c0392b;

    --font-display: 'DM Serif Display', Georgia, serif;
    --font-body: 'DM Sans', sans-serif;
    --line-height-body: 1.65;
    --letter-spacing-heading: -0.01em;
    --font-weight-heading: 400;
}

/* === Téma: Forest (zelená/přírodní) === */
body.tema-forest {
    --color-bg: #f0f5ee;
    --color-surface: #ffffff;
    --color-ink: #1a2e1a;
    --color-ink-soft: #3a5a3a;
    --color-muted: #7a9a7a;
    --color-line: #ccdece;
    --color-line-soft: #deeede;
    --color-accent: #2d6a2d;
    --color-accent-soft: #d5ecd5;
    --color-success: #1a7a45;
    --color-warn: #9a6200;
    --color-error: #c0392b;

    --font-display: 'Playfair Display', Georgia, serif;
    --font-body: 'Lato', sans-serif;
    --font-size-body: 16px;
    --line-height-body: 1.7;
    --letter-spacing-heading: 0em;
    --font-weight-heading: 400;
    --font-weight-body: 300;
}

/* === Téma: Sunset (teplá oranžová/korálová) === */
body.tema-sunset {
    --color-bg: #fdf5ee;
    --color-surface: #ffffff;
    --color-ink: #2e1a0d;
    --color-ink-soft: #6b3a1a;
    --color-muted: #b07a55;
    --color-line: #f0d8c0;
    --color-line-soft: #f7ece0;
    --color-accent: #d4580a;
    --color-accent-soft: #fce8d5;
    --color-success: #2d6a3f;
    --color-warn: #9a6200;
    --color-error: #c0392b;

    --font-display: 'Cormorant Garamond', Georgia, serif;
    --font-body: 'Nunito', sans-serif;
    --font-size-body: 16px;
    --line-height-body: 1.7;
    --letter-spacing-heading: 0.01em;
    --font-weight-heading: 500;
    --font-weight-body: 300;
}

/* === Téma: Lavender (fialová/světlá) === */
body.tema-lavender {
    --color-bg: #f4f0fb;
    --color-surface: #ffffff;
    --color-ink: #1e1033;
    --color-ink-soft: #4a3070;
    --color-muted: #8a75aa;
    --color-line: #d8cef0;
    --color-line-soft: #ece6f8;
    --color-accent: #6b35c8;
    --color-accent-soft: #e8dff8;
    --color-success: #2d6a3f;
    --color-warn: #9a6200;
    --color-error: #c0392b;

    --font-display: 'Outfit', sans-serif;
    --font-body: 'Outfit', sans-serif;
    --font-size-body: 15.5px;
    --line-height-body: 1.65;
    --letter-spacing-heading: -0.02em;
    --font-weight-heading: 600;
    --font-weight-body: 400;
}

/* === Téma: Rose (růžová/elegantní) === */
body.tema-rose {
    --color-bg: #fdf0f3;
    --color-surface: #ffffff;
    --color-ink: #2e0d14;
    --color-ink-soft: #6b2035;
    --color-muted: #b07585;
    --color-line: #f0c8d0;
    --color-line-soft: #f8e0e5;
    --color-accent: #c0184a;
    --color-accent-soft: #fce0e8;
    --color-success: #2d6a3f;
    --color-warn: #9a6200;
    --color-error: #9b2c2c;

    --font-display: 'Josefin Sans', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-size-body: 15px;
    --line-height-body: 1.65;
    --letter-spacing-heading: 0.04em;
    --font-weight-heading: 600;
    --font-weight-body: 400;
}

/* === Téma: Neon (tmavé + neonové akcenty) === */
body.tema-neon {
    --color-bg: #0a0a0f;
    --color-surface: #12121a;
    --color-ink: #e8e8ff;
    --color-ink-soft: #9090cc;
    --color-muted: #505080;
    --color-line: #1e1e30;
    --color-line-soft: #16162a;
    --color-accent: #7c3aed;
    --color-accent-soft: #1a0a3a;
    --color-success: #00c896;
    --color-warn: #ffaa00;
    --color-error: #ff4466;
    --shadow-sm: 0 0 8px rgba(124,58,237,0.15);
    --shadow-md: 0 0 20px rgba(124,58,237,0.2);

    --font-display: 'Syne', sans-serif;
    --font-body: 'Space Grotesk', sans-serif;
    --font-size-body: 15px;
    --line-height-body: 1.6;
    --letter-spacing-heading: -0.03em;
    --font-weight-heading: 700;
    --font-weight-body: 400;
}
body.tema-neon .site-header {
    background: linear-gradient(135deg, #12121a 0%, #1a0a2e 100%);
    border-bottom: 1px solid #7c3aed44;
    box-shadow: 0 2px 20px rgba(124,58,237,0.2);
}
body.tema-neon .brand-mark {
    background: linear-gradient(135deg, #7c3aed, #a855f7);
    box-shadow: 0 0 12px rgba(124,58,237,0.6);
}
body.tema-neon .btn-primary {
    background: linear-gradient(135deg, #7c3aed, #a855f7);
    border: none;
    box-shadow: 0 0 14px rgba(124,58,237,0.5);
    color: #fff;
}
body.tema-neon .btn-primary:hover {
    box-shadow: 0 0 22px rgba(168,85,247,0.7);
    background: linear-gradient(135deg, #a855f7, #7c3aed);
    color: #fff;
}
body.tema-neon .card {
    background: var(--color-surface);
    border: 1px solid #2a1a4a;
    box-shadow: 0 4px 20px rgba(0,0,0,0.4), inset 0 1px 0 rgba(124,58,237,0.1);
}
body.tema-neon input[type=text], body.tema-neon input[type=email],
body.tema-neon input[type=password], body.tema-neon input[type=date],
body.tema-neon input[type=number], body.tema-neon select, body.tema-neon textarea {
    background: #0a0a14;
    color: var(--color-ink);
    border-color: #2a1a4a;
}
body.tema-neon input:focus, body.tema-neon select:focus, body.tema-neon textarea:focus {
    border-color: #7c3aed;
    box-shadow: 0 0 0 3px rgba(124,58,237,0.25);
}
body.tema-neon .tabs a.active { border-bottom-color: #a855f7; color: #a855f7; }
body.tema-neon .badge-accent { background: #1a0a3a; color: #a855f7; }

/* === Téma: Aurora (světlé + duhové gradienty) === */
body.tema-aurora {
    --color-bg: #f0f4ff;
    --color-surface: #ffffff;
    --color-ink: #1a1a2e;
    --color-ink-soft: #3a3a6e;
    --color-muted: #8080b0;
    --color-line: #dde3f8;
    --color-line-soft: #eef0fc;
    --color-accent: #4f46e5;
    --color-accent-soft: #e8e6ff;
    --color-success: #059669;
    --color-warn: #d97706;
    --color-error: #dc2626;

    --font-display: 'Syne', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-size-body: 15.5px;
    --line-height-body: 1.65;
    --letter-spacing-heading: -0.03em;
    --font-weight-heading: 700;
    --font-weight-body: 400;
}
body.tema-aurora .site-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    border-bottom: none;
    box-shadow: 0 4px 20px rgba(102,126,234,0.3);
}
body.tema-aurora .site-header .brand,
body.tema-aurora .site-header .brand-text,
body.tema-aurora .site-header .main-nav a,
body.tema-aurora .site-header .user-chip,
body.tema-aurora .site-header .btn-link {
    color: #fff;
}
body.tema-aurora .site-header .main-nav a:hover { color: #ffe; }
body.tema-aurora .brand-mark {
    background: rgba(255,255,255,0.25);
    backdrop-filter: blur(4px);
    color: #fff;
}
body.tema-aurora .btn-primary {
    background: linear-gradient(135deg, #4f46e5, #7c3aed);
    border: none;
    color: #fff;
    box-shadow: 0 4px 14px rgba(79,70,229,0.4);
}
body.tema-aurora .btn-primary:hover {
    background: linear-gradient(135deg, #7c3aed, #4f46e5);
    color: #fff;
    box-shadow: 0 6px 20px rgba(79,70,229,0.5);
}
body.tema-aurora .card {
    box-shadow: 0 4px 24px rgba(79,70,229,0.08), 0 1px 3px rgba(0,0,0,0.06);
    border: 1px solid rgba(79,70,229,0.12);
}
body.tema-aurora .site-header .admin-link { color: #ffe080; font-weight: 700; }

/* === Téma: Amber (jantarová/zlatá na tmavém) === */
body.tema-amber {
    --color-bg: #1a1200;
    --color-surface: #231900;
    --color-ink: #fff3cc;
    --color-ink-soft: #d4a820;
    --color-muted: #806830;
    --color-line: #3a2a00;
    --color-line-soft: #2e2000;
    --color-accent: #f59e0b;
    --color-accent-soft: #2a1e00;
    --color-success: #34d399;
    --color-warn: #fb923c;
    --color-error: #f87171;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.5);

    --font-display: 'Space Mono', monospace;
    --font-body: 'Space Grotesk', sans-serif;
    --font-size-body: 15px;
    --line-height-body: 1.6;
    --letter-spacing-heading: 0.02em;
    --font-weight-heading: 700;
    --font-weight-body: 400;
}
body.tema-amber .site-header {
    background: linear-gradient(135deg, #231900 0%, #3a2800 100%);
    border-bottom: 1px solid #f59e0b33;
    box-shadow: 0 2px 16px rgba(245,158,11,0.15);
}
body.tema-amber .brand-mark {
    background: linear-gradient(135deg, #f59e0b, #fbbf24);
    color: #1a1200;
    box-shadow: 0 0 10px rgba(245,158,11,0.4);
}
body.tema-amber .btn-primary {
    background: linear-gradient(135deg, #f59e0b, #fbbf24);
    color: #1a1200;
    border: none;
    font-weight: 700;
    box-shadow: 0 4px 14px rgba(245,158,11,0.35);
}
body.tema-amber .btn-primary:hover {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    color: #1a1200;
    box-shadow: 0 6px 20px rgba(245,158,11,0.5);
}
body.tema-amber .card {
    border: 1px solid #3a2a00;
    box-shadow: 0 4px 16px rgba(0,0,0,0.4);
}
body.tema-amber input[type=text], body.tema-amber input[type=email],
body.tema-amber input[type=password], body.tema-amber input[type=date],
body.tema-amber input[type=number], body.tema-amber select, body.tema-amber textarea {
    background: #120d00;
    color: var(--color-ink);
    border-color: #3a2a00;
}
body.tema-amber .tabs a.active { border-bottom-color: #f59e0b; color: #f59e0b; }