/* ============================================
   Fikua Lab — Verifier
   Light/Dark theme with Fikua Lab design system
   ============================================ */

:root {
    --bg: #ffffff;
    --surface: #ffffff;
    --surface-hover: #f1f5f9;
    --border: #e2e8f0;
    --text: #334155;
    --text-muted: #64748b;
    --heading: #0f172a;
    --accent: #2A9D8F;
    --accent-hover: #238578;
    --accent-subtle: rgba(42, 157, 143, 0.08);
    --primary: #3b82f6;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --berry: #c2185b;
    --nav-bg: rgba(255, 255, 255, 0.85);
    --btn-accent-text: #fff;
    --radius: 8px;
    --radius-lg: 12px;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --mono: 'SF Mono', 'Fira Code', 'JetBrains Mono', monospace;
    --max-width: 720px;
}

[data-theme="dark"] {
    --bg: #0f1117;
    --surface: #1a1d27;
    --surface-hover: #22263a;
    --border: #2a2e3f;
    --text: #e1e4ed;
    --text-muted: #8b90a0;
    --heading: #e2e8f0;
    --accent: #2dd4bf;
    --accent-hover: #5eead4;
    --accent-subtle: rgba(45, 212, 191, 0.1);
    --primary: #4f8ff7;
    --success: #34d399;
    --warning: #fbbf24;
    --danger: #f87171;
    --berry: #f06292;
    --nav-bg: rgba(15, 17, 23, 0.9);
    --btn-accent-text: #0f1117;
}

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

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    transition: background 0.3s, color 0.3s;
}

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

h1, h2, h3 { color: var(--heading); line-height: 1.3; }

/* --- Theme Toggle --- */
.theme-toggle {
    background: none;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.35rem;
    cursor: pointer;
    color: var(--text-muted);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: color 0.15s, border-color 0.15s;
}
.theme-toggle:hover { color: var(--heading); border-color: var(--text-muted); }
.icon-moon { display: none; }
[data-theme="dark"] .icon-sun { display: none; }
[data-theme="dark"] .icon-moon { display: block; }
.nav-links { display: flex; align-items: center; gap: 0.75rem; }

/* --- Nav --- */
.nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--nav-bg);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(12px);
    transition: background 0.3s, border-color 0.3s;
}

.nav-inner {
    max-width: 960px;
    margin: 0 auto;
    padding: 0.75rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--heading);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
}

.nav-logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--accent);
    color: #fff;
    border-radius: 6px;
    font-weight: 700;
    font-size: 0.85rem;
}

.nav-label {
    font-size: 0.8rem;
    font-family: var(--mono);
    color: var(--text-muted);
    background: var(--surface);
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    border: 1px solid var(--border);
}

/* --- Main --- */
main {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

.page-header { margin-bottom: 1.5rem; }

.page-header h1 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.page-sub {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* --- Tabs --- */
.tabs {
    display: flex;
    gap: 0.25rem;
    border-bottom: 1px solid var(--border);
    margin-bottom: 1.5rem;
}

.tab {
    font-family: var(--font);
    font-size: 0.8125rem;
    font-weight: 500;
    padding: 0.6rem 1rem;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.15s;
}

.tab:hover { color: var(--text); }

.tab.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.tab-content.hidden { display: none; }

/* --- Config Groups --- */
.config-group {
    margin-bottom: 1.5rem;
}

.config-group h3 {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 0.5rem;
}

.config-group label {
    display: block;
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.config-desc {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

/* --- Radio Cards --- */
.radio-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
}

.radio-card {
    background: var(--surface);
    border: 2px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1rem;
    cursor: pointer;
    transition: border-color 0.15s, background 0.15s;
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
}

.radio-card:hover {
    background: var(--surface-hover);
}

.radio-card.selected {
    border-color: var(--accent);
    background: var(--accent-subtle);
}

.radio-card input { margin-top: 0.15rem; accent-color: var(--accent); }

.radio-card-content strong {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--heading);
}

.radio-card-content span {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* --- Radio Pills --- */
.radio-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.radio-pill {
    display: inline-flex;
    align-items: center;
    cursor: pointer;
}

.radio-pill input { display: none; }

.radio-pill span {
    font-family: var(--mono);
    font-size: 0.75rem;
    padding: 0.3rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: 20px;
    color: var(--text-muted);
    background: var(--surface);
    transition: all 0.15s;
}

.radio-pill:hover span {
    border-color: var(--text-muted);
    color: var(--text);
}

.radio-pill.selected span {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-subtle);
}

/* --- Inputs --- */
.input {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    color: var(--text);
    font-family: var(--font);
    font-size: 0.8125rem;
    transition: border-color 0.15s;
}

.input:focus {
    outline: none;
    border-color: var(--accent);
}

.input--mono { font-family: var(--mono); font-size: 0.75rem; }

.textarea {
    resize: vertical;
    min-height: 120px;
    line-height: 1.5;
}

select.input {
    appearance: auto;
}

/* --- Advanced --- */
.advanced-toggle {
    margin-bottom: 1.5rem;
}

.advanced-toggle summary {
    font-size: 0.8125rem;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.5rem 0;
    transition: color 0.15s;
}

.advanced-toggle summary:hover { color: var(--text); }

.advanced-fields {
    padding: 1rem 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.advanced-fields label {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

/* --- Buttons --- */
.btn {
    font-family: var(--font);
    font-size: 0.8125rem;
    padding: 0.4rem 0.85rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
    transition: all 0.15s;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}
.btn:hover { background: var(--surface-hover); }

.btn-accent {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--btn-accent-text);
    font-weight: 600;
}
.btn-accent:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 0.95rem;
    border-radius: var(--radius-lg);
}

.btn-sm { padding: 0.25rem 0.6rem; font-size: 0.75rem; }

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

/* --- QR Section --- */
.qr-section {
    text-align: center;
    padding: 1.5rem 0;
}

.qr-container {
    display: inline-block;
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 1rem;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.qr-code {
    width: 200px;
    height: 200px;
    background: #f0f0f0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    color: #666;
    margin: 0 auto 0.75rem;
}

.qr-status {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    color: #333;
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.status-dot--pending {
    background: #f59e0b;
    animation: pulse 1.5s infinite;
}

.status-dot--success { background: #16a34a; }
.status-dot--error { background: #dc2626; }

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.qr-link {
    display: flex;
    gap: 0.5rem;
    max-width: 400px;
    margin: 0 auto;
}

.qr-link .input { flex: 1; }

/* --- Result --- */
.result-section { margin-top: 1.5rem; }

.result-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
}

.result-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    margin-bottom: 0.75rem;
}

.result-icon.success {
    background: rgba(52, 211, 153, 0.1);
    color: var(--success);
}

.result-icon.error {
    background: rgba(248, 113, 113, 0.1);
    color: var(--danger);
}

.result-claims {
    margin-top: 1rem;
}

.claim-row {
    display: flex;
    justify-content: space-between;
    padding: 0.4rem 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.8125rem;
}

.claim-row:last-child { border-bottom: none; }
.claim-label { color: var(--text-muted); font-family: var(--mono); }
.claim-value { color: var(--heading); font-weight: 500; }

/* --- Code Block --- */
.code-block {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
    font-family: var(--mono);
    font-size: 0.75rem;
    overflow-x: auto;
    white-space: pre;
    color: var(--text);
    margin-top: 0.75rem;
    max-height: 300px;
    overflow-y: auto;
}

/* --- Event Log --- */
.log-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.log-header h3 {
    font-size: 0.875rem;
}

.event-log {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.75rem;
    max-height: 400px;
    overflow-y: auto;
    font-family: var(--mono);
    font-size: 0.75rem;
}

.log-entry {
    padding: 0.25rem 0;
    display: flex;
    gap: 0.5rem;
}

.log-time { color: var(--text-muted); flex-shrink: 0; }
.log-level { font-weight: 600; flex-shrink: 0; width: 50px; }
.log-level--info { color: var(--primary); }
.log-level--success { color: var(--success); }
.log-level--error { color: var(--danger); }
.log-level--warn { color: var(--warning); }
.log-msg { color: var(--text); word-break: break-all; }

.log-empty {
    color: var(--text-muted);
    text-align: center;
    padding: 2rem;
    font-family: var(--font);
    font-size: 0.8125rem;
}

.hidden { display: none; }

/* --- Responsive --- */
@media (max-width: 768px) {
    main { padding: 1.5rem 1rem; }
    .radio-cards { grid-template-columns: 1fr; }
    .radio-pills { flex-wrap: wrap; }
}