:root {
    --bg-primary: #08081a;
    --bg-secondary: #0c0c1e;
    --bg-tertiary: #12122a;
    --bg-hover: #181830;
    --text-primary: #e8e8f0;
    --text-secondary: #7a7a98;
    --text-muted: #4a4a68;
    --accent-amber: #f59e0b;
    --accent-amber-dim: rgba(245, 158, 11, 0.15);
    --accent-purple: #a855f7;
    --accent-purple-dim: rgba(168, 85, 247, 0.15);
    --accent-green: #22c55e;
    --accent-green-dim: rgba(34, 197, 94, 0.15);
    --accent-blue: #4a9eff;
    --accent-red: #ef4444;
    --border-color: #1a1a30;
    --border-hover: #2a2a48;
}

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

body {
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
}

/* ── Header ── */
.header {
    background: linear-gradient(180deg, #0e0e22 0%, var(--bg-secondary) 100%);
    border-bottom: 1px solid var(--border-color);
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg,
        transparent 0%,
        var(--accent-purple) 20%,
        var(--accent-amber) 50%,
        var(--accent-purple) 80%,
        transparent 100%
    );
    background-size: 200% 100%;
    animation: chainFlow 4s linear infinite;
}

@keyframes chainFlow {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.header h1 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent-amber);
    letter-spacing: 1px;
}

.header .subtitle {
    color: var(--text-muted);
    font-size: 0.75rem;
    letter-spacing: 0.5px;
}

/* ── Tabs ── */
.tabs {
    display: flex;
    gap: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 0 2rem;
}

.tab {
    padding: 0.875rem 1.25rem;
    cursor: pointer;
    color: var(--text-muted);
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
    font-size: 0.8125rem;
}

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

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

/* ── Main content ── */
.main {
    padding: 1.5rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* ── Stats grid ── */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 1.25rem;
    transition: border-color 0.2s;
}

.stat-card:hover {
    border-color: var(--border-hover);
}

.stat-card .label {
    color: var(--text-muted);
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.5rem;
}

.stat-card .value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--accent-amber);
}

.stat-card .value.verified {
    color: var(--accent-green);
}

.stat-card .value.error {
    color: var(--accent-red);
}

/* ── Panels ── */
.panel {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    margin-bottom: 1.25rem;
    overflow: hidden;
}

.panel-header {
    padding: 0.875rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.panel-header h2 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
}

.panel-body {
    padding: 1.25rem;
}

/* ── Search ── */
.search-bar {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
}

.search-bar input {
    flex: 1;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.625rem 1rem;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.8125rem;
    transition: border-color 0.2s;
}

.search-bar input:focus {
    outline: none;
    border-color: var(--accent-amber);
    box-shadow: 0 0 0 2px var(--accent-amber-dim);
}

.search-bar input::placeholder {
    color: var(--text-muted);
}

/* ── Buttons ── */
.btn {
    background: linear-gradient(135deg, var(--accent-amber), #d97706);
    color: #000;
    border: none;
    border-radius: 8px;
    padding: 0.625rem 1.25rem;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.8125rem;
    font-weight: 600;
    transition: all 0.2s;
}

.btn:hover {
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
}

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

.btn-secondary:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
    box-shadow: none;
}

.btn-success {
    background: linear-gradient(135deg, var(--accent-green), #16a34a);
}

/* ── Table ── */
.table-container {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 0.625rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    color: var(--text-muted);
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 600;
}

td {
    font-size: 0.8125rem;
}

/* Alternating row tints */
tbody tr:nth-child(even) {
    background: rgba(12, 12, 30, 0.5);
}

tbody tr:nth-child(odd) {
    background: transparent;
}

tr {
    transition: background 0.15s;
    cursor: pointer;
}

tr:hover {
    background: var(--bg-hover) !important;
}

/* Data type highlights */
.hash {
    font-family: 'SF Mono', 'Fira Code', monospace;
    color: var(--accent-purple);
    cursor: pointer;
    padding: 1px 4px;
    border-radius: 3px;
    background: var(--accent-purple-dim);
    transition: all 0.2s;
}

.hash:hover {
    background: rgba(168, 85, 247, 0.25);
}

.module-id {
    color: var(--accent-amber);
    font-weight: 600;
}

.version {
    color: var(--accent-green);
}

.publisher {
    color: var(--text-secondary);
}

.timestamp {
    color: var(--text-muted);
    font-size: 0.75rem;
}

/* ── Pagination ── */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    padding: 0.875rem;
    border-top: 1px solid var(--border-color);
}

.pagination button {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.375rem 0.875rem;
    border-radius: 6px;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.75rem;
    transition: all 0.2s;
}

.pagination button:hover:not(:disabled) {
    border-color: var(--accent-amber);
    color: var(--accent-amber);
}

.pagination button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.pagination .page-info {
    color: var(--text-muted);
    font-size: 0.75rem;
}

/* ── Token verify form ── */
.verify-form {
    max-width: 800px;
}

.verify-form textarea {
    width: 100%;
    min-height: 140px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    color: var(--text-primary);
    font-family: 'SF Mono', monospace;
    font-size: 0.8125rem;
    resize: vertical;
    margin-bottom: 0.75rem;
    transition: border-color 0.2s;
}

.verify-form textarea:focus {
    outline: none;
    border-color: var(--accent-amber);
    box-shadow: 0 0 0 2px var(--accent-amber-dim);
}

.verify-result {
    margin-top: 1.25rem;
}

.verify-result.valid {
    border-left: 3px solid var(--accent-green);
    padding-left: 1rem;
}

.verify-result.invalid {
    border-left: 3px solid var(--accent-red);
    padding-left: 1rem;
}

/* ── Result rows ── */
.result-row {
    display: flex;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.result-row:last-child {
    border-bottom: none;
}

.result-row .label {
    width: 140px;
    color: var(--text-muted);
    font-size: 0.8125rem;
    flex-shrink: 0;
}

.result-row .value {
    flex: 1;
    word-break: break-all;
    font-size: 0.8125rem;
}

/* ── Entry detail modal ── */
.entry-detail {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(4px);
}

.entry-detail.hidden {
    display: none;
}

.entry-detail-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    max-width: 680px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.entry-detail-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.entry-detail-header h2 {
    font-size: 0.875rem;
}

.entry-detail-body {
    padding: 1.25rem;
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color 0.2s;
    line-height: 1;
}

.close-btn:hover {
    color: var(--text-primary);
}

/* ── Chain status ── */
.chain-status {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: 8px;
    margin-bottom: 1.25rem;
}

.chain-status.valid {
    border-left: 3px solid var(--accent-green);
}

.chain-status.invalid {
    border-left: 3px solid var(--accent-red);
}

.status-icon {
    font-size: 1.25rem;
}

/* ── Loading / Empty ── */
.loading {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
}

.empty-state {
    text-align: center;
    padding: 2.5rem;
    color: var(--text-muted);
}

/* ── Token styles ── */
.sf-match {
    color: var(--accent-purple);
    font-size: 0.8em;
    background: var(--accent-purple-dim);
    padding: 1px 4px;
    border-radius: 3px;
}