/* ═══════════════════════════════════════════════════
   CertiLead Explorer — Custom CSS
   Primary: #347FFC
   ═══════════════════════════════════════════════════ */

:root {
    --ex-primary: #347FFC;
    --ex-primary-dark: #2a66ca;
    --ex-primary-light: #e2eeff;
    --ex-primary-rgb: 52, 127, 252;
    --ex-bg: #f4f6f9;
    --ex-card-bg: #ffffff;
    --ex-text: #2d3748;
    --ex-text-muted: #718096;
    --ex-border: #e2e8f0;
    --ex-hash-color: #4a5568;
    --ex-success: #38a169;
    --ex-success-bg: #e8f5e9;
    --ex-warning: #e07c00;
    --ex-warning-bg: #fff8e1;
    --ex-danger: #e53e3e;
    --ex-danger-bg: #ffebee;
    --ex-gray-bg: #f7fafc;
}

* { box-sizing: border-box; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--ex-text);
    background: var(--ex-bg);
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ─── HEADER ─────────────────────────────────── */

.ex-header {
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.ex-header-inner {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.ex-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #1390ff;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.25rem;
    white-space: nowrap;
    flex-shrink: 0;
}

.ex-logo i {
    font-size: 1.5rem;
}

.ex-logo small {
    font-weight: 400;
    font-size: 0.65em;
    opacity: 0.8;
    margin-left: 0.25rem;
}

.ex-search {
    flex: 1;
    display: flex;
    max-width: 700px;
}

.ex-search-input {
    flex: 1;
    border: none;
    border-radius: 6px 0 0 6px;
    padding: 0.625rem 1rem;
    font-size: 0.875rem;
    font-family: 'JetBrains Mono', monospace;
    outline: none;
    background: rgba(255, 255, 255, 0.95);
    color: var(--ex-text);
}

.ex-search-input::placeholder {
    font-family: 'Inter', sans-serif;
    color: #a0aec0;
    font-size: 0.8rem;
}

.ex-search-btn {
    border: none;
    background: #1a5fc9;
    color: #fff;
    padding: 0 1rem;
    border-radius: 0 6px 6px 0;
    cursor: pointer;
    font-size: 1.1rem;
    transition: background 0.2s;
}

.ex-search-btn:hover {
    background: #154fa6;
}

/* ─── MAIN ───────────────────────────────────── */

.ex-main {
    flex: 1;
    padding-bottom: 2rem;
}

/* ─── ENTITY BANNER ──────────────────────────── */

.ex-banner {
    background: linear-gradient(135deg, var(--ex-primary) 0%, #1a5fc9 100%);
    color: #fff;
    padding: 1.5rem 0;
    margin-bottom: 1.5rem;
}

.ex-banner-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.ex-banner-title i {
    font-size: 1.75rem;
    opacity: 0.9;
}

.ex-banner-hash {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    opacity: 0.85;
    word-break: break-all;
    line-height: 1.6;
}

/* ─── NAV (Previous / Next) ──────────────────── */

.ex-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 1rem;
}

.ex-nav a, .ex-nav span {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    transition: color 0.2s;
}

.ex-nav a:hover {
    color: #fff;
}

.ex-nav .disabled {
    opacity: 0.3;
    cursor: default;
}

/* ─── STATUS BANNER ──────────────────────────── */

.ex-status {
    border-radius: 8px;
    padding: 1rem 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.ex-status i { font-size: 1.5rem; }

.ex-status-ok {
    background: var(--ex-success-bg);
    color: var(--ex-success);
    border: 1px solid #a5d6a7;
}

.ex-status-pending {
    background: var(--ex-warning-bg);
    color: var(--ex-warning);
    border: 1px solid #ffe082;
}

.ex-status-error {
    background: var(--ex-danger-bg);
    color: var(--ex-danger);
    border: 1px solid #ef9a9a;
}

/* ─── BADGE ROW ──────────────────────────────── */

.ex-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.ex-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.75rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 500;
}

.ex-badge i { font-size: 1rem; }

.ex-badge-ok {
    background: var(--ex-success-bg);
    color: var(--ex-success);
    border: 1px solid #a5d6a7;
}

.ex-badge-pending {
    background: var(--ex-warning-bg);
    color: var(--ex-warning);
    border: 1px solid #ffe082;
}

.ex-badge-gray {
    background: #f5f5f5;
    color: #9e9e9e;
    border: 1px solid #e0e0e0;
}

/* ─── SUMMARY CARDS ──────────────────────────── */

.ex-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.ex-summary-card {
    background: var(--ex-gray-bg);
    border: 1px solid var(--ex-border);
    border-radius: 8px;
    padding: 1.25rem;
    text-align: center;
}

.ex-summary-label {
    text-transform: uppercase;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--ex-text-muted);
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.ex-summary-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--ex-text);
}

.ex-summary-sub {
    font-size: 0.75rem;
    color: var(--ex-text-muted);
    margin-top: 0.25rem;
}

/* ─── SECTIONS ───────────────────────────────── */

.ex-section {
    background: var(--ex-card-bg);
    border: 1px solid var(--ex-border);
    border-radius: 8px;
    margin-bottom: 1.5rem;
    overflow: hidden;
}

.ex-section-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.25rem;
    border-bottom: 1px solid var(--ex-border);
    background: var(--ex-gray-bg);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--ex-text);
    cursor: pointer;
    user-select: none;
}

.ex-section-header i {
    color: var(--ex-primary);
    font-size: 1.1rem;
}

.ex-section-header .ex-toggle {
    margin-left: auto;
    font-size: 1rem;
    transition: transform 0.2s;
    color: var(--ex-text-muted);
}

.ex-section-header.collapsed .ex-toggle {
    transform: rotate(-90deg);
}

.ex-section-body {
    padding: 1rem 1.25rem;
}

/* ─── KEY-VALUE TABLE ────────────────────────── */

.ex-kv {
    width: 100%;
}

.ex-kv tr { border-bottom: 1px solid #f0f0f0; }
.ex-kv tr:last-child { border-bottom: none; }

.ex-kv td {
    padding: 0.625rem 0;
    vertical-align: top;
}

.ex-kv-label {
    color: var(--ex-text-muted);
    font-size: 0.8rem;
    font-weight: 500;
    white-space: nowrap;
    width: 170px;
    padding-right: 1rem;
}

.ex-kv-value {
    font-size: 0.875rem;
    word-break: break-all;
}

/* ─── HASH DISPLAY ───────────────────────────── */

.ex-hash {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    color: var(--ex-hash-color);
    word-break: break-all;
    display: inline;
}

.ex-hash-link {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    color: var(--ex-primary);
    word-break: break-all;
    text-decoration: none;
}

.ex-hash-link:hover {
    text-decoration: underline;
}

.ex-copy-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    border: 1px solid var(--ex-border);
    border-radius: 4px;
    background: var(--ex-gray-bg);
    color: var(--ex-text-muted);
    cursor: pointer;
    font-size: 0.85rem;
    margin-left: 0.5rem;
    vertical-align: middle;
    transition: all 0.2s;
}

.ex-copy-btn:hover {
    background: var(--ex-primary-light);
    color: var(--ex-primary);
    border-color: var(--ex-primary);
}

.ex-copy-btn.copied {
    background: var(--ex-success-bg);
    color: var(--ex-success);
    border-color: var(--ex-success);
}

.ex-check-inline {
    color: var(--ex-success);
    font-size: 0.85rem;
    margin-left: 0.5rem;
    font-weight: 500;
}

/* ─── CHAIN VISUALIZATION ────────────────────── */

.ex-chain {
    display: flex;
    align-items: center;
    gap: 0;
    overflow-x: auto;
    padding: 1rem 0;
    justify-content: center;
}

.ex-chain-block {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0.75rem 1rem;
    border: 2px solid var(--ex-border);
    border-radius: 8px;
    background: #fff;
    min-width: 120px;
    text-decoration: none;
    color: var(--ex-text);
    transition: all 0.2s;
    flex-shrink: 0;
}

.ex-chain-block:hover {
    border-color: var(--ex-primary);
    box-shadow: 0 2px 8px rgba(var(--ex-primary-rgb), 0.15);
}

.ex-chain-block.active {
    border-color: var(--ex-primary);
    background: var(--ex-primary-light);
    box-shadow: 0 2px 12px rgba(var(--ex-primary-rgb), 0.25);
    transform: scale(1.05);
}

.ex-chain-id {
    font-weight: 700;
    font-size: 0.85rem;
    margin-bottom: 0.25rem;
}

.ex-chain-hash {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    color: var(--ex-text-muted);
}

.ex-chain-time {
    font-size: 0.65rem;
    color: var(--ex-text-muted);
    margin-top: 0.25rem;
}

.ex-chain-arrow {
    color: var(--ex-primary);
    font-size: 1.25rem;
    padding: 0 0.25rem;
    flex-shrink: 0;
}

.ex-chain-label {
    font-size: 0.7rem;
    color: var(--ex-primary);
    font-weight: 600;
    margin-top: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ─── MERKLE TREE ────────────────────────────── */

.ex-merkle-tree {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 0;
}

.ex-merkle-level {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
}

.ex-merkle-node {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0.5rem 0.75rem;
    border: 2px solid var(--ex-border);
    border-radius: 6px;
    background: #fff;
    min-width: 80px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    color: var(--ex-text-muted);
}

.ex-merkle-node.root {
    border-color: var(--ex-primary);
    background: var(--ex-primary-light);
    color: var(--ex-primary);
    font-weight: 600;
}

.ex-merkle-node.leaf {
    border-color: var(--ex-primary);
    background: var(--ex-primary-light);
    color: var(--ex-primary);
    font-weight: 600;
}

.ex-merkle-node.sibling {
    border-color: #e0e0e0;
    background: #fafafa;
    color: #9e9e9e;
}

.ex-merkle-node.path {
    border-color: var(--ex-primary);
    border-style: dashed;
}

.ex-merkle-node-label {
    font-family: 'Inter', sans-serif;
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
    font-weight: 600;
}

.ex-merkle-connector {
    display: flex;
    justify-content: center;
    color: var(--ex-text-muted);
    font-size: 0.8rem;
}

/* ─── TABLE ──────────────────────────────────── */

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

.ex-table thead th {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--ex-text-muted);
    font-weight: 600;
    padding: 0.75rem;
    border-bottom: 2px solid var(--ex-border);
    text-align: left;
}

.ex-table tbody td {
    padding: 0.625rem 0.75rem;
    border-bottom: 1px solid #f0f0f0;
    font-size: 0.85rem;
    vertical-align: middle;
}

.ex-table tbody tr:hover {
    background: var(--ex-gray-bg);
}

.ex-table .hash-cell {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: var(--ex-primary);
}

/* ─── HOME PAGE ──────────────────────────────── */

.ex-hero {
    background: linear-gradient(135deg, var(--ex-primary) 0%, #1a5fc9 100%);
    color: #fff;
    padding: 3rem 0;
    text-align: center;
}

.ex-hero-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.ex-hero-title i { font-size: 2.25rem; }

.ex-hero-sub {
    font-size: 1rem;
    opacity: 0.85;
    margin-bottom: 1.5rem;
}

.ex-hero .ex-search {
    max-width: 650px;
    margin: 0 auto;
}

.ex-how {
    padding: 2.5rem 0;
}

.ex-how-title {
    text-align: center;
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: var(--ex-text);
}

.ex-how-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    max-width: 900px;
    margin: 0 auto;
}

.ex-how-step {
    text-align: center;
    padding: 1.5rem 1rem;
}

.ex-how-step-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--ex-primary-light);
    color: var(--ex-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 1.5rem;
}

.ex-how-step-title {
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
}

.ex-how-step-desc {
    font-size: 0.8rem;
    color: var(--ex-text-muted);
    line-height: 1.5;
}

.ex-how-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--ex-primary);
    font-size: 1.5rem;
}

/* ─── PAGINATION ─────────────────────────────── */

.ex-pagination {
    display: flex;
    justify-content: center;
    gap: 0.25rem;
    padding: 1rem 0;
}

.ex-pagination a, .ex-pagination span {
    padding: 0.375rem 0.75rem;
    border: 1px solid var(--ex-border);
    border-radius: 4px;
    font-size: 0.8rem;
    text-decoration: none;
    color: var(--ex-text);
    transition: all 0.2s;
}

.ex-pagination a:hover {
    background: var(--ex-primary-light);
    border-color: var(--ex-primary);
    color: var(--ex-primary);
}

.ex-pagination .active {
    background: var(--ex-primary);
    border-color: var(--ex-primary);
    color: #fff;
}

/* ─── LOADING ────────────────────────────────── */

.ex-loading {
    text-align: center;
    padding: 3rem;
    color: var(--ex-text-muted);
}

.ex-loading .spinner-border {
    color: var(--ex-primary);
}

/* ─── FOOTER ─────────────────────────────────── */

.ex-footer {
    background: #fff;
    border-top: 1px solid var(--ex-border);
    padding: 1.25rem 0;
    margin-top: auto;
}

.ex-footer p {
    margin: 0;
    font-size: 0.8rem;
    color: var(--ex-text-muted);
}

/* ─── NOT FOUND ──────────────────────────────── */

.ex-not-found {
    text-align: center;
    padding: 4rem 1rem;
}

.ex-not-found i {
    font-size: 3rem;
    color: var(--ex-text-muted);
    margin-bottom: 1rem;
}

.ex-not-found h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.ex-not-found p {
    color: var(--ex-text-muted);
    font-size: 0.9rem;
}

/* ─── RESPONSIVE ─────────────────────────────── */

@media (max-width: 768px) {
    .ex-header-inner {
        flex-direction: column;
        gap: 0.75rem;
    }

    .ex-search {
        max-width: 100%;
        width: 100%;
    }

    .ex-banner-title {
        font-size: 1.15rem;
    }

    .ex-banner-hash {
        font-size: 0.7rem;
    }

    .ex-summary {
        grid-template-columns: repeat(2, 1fr);
    }

    .ex-kv-label {
        width: auto;
        display: block;
        padding-bottom: 0;
    }

    .ex-kv td {
        display: block;
        padding: 0.25rem 0;
    }

    .ex-kv tr {
        display: block;
        padding: 0.5rem 0;
    }

    .ex-chain {
        justify-content: flex-start;
    }

    .ex-chain-block {
        min-width: 90px;
    }

    .ex-hero-title {
        font-size: 1.5rem;
    }

    .ex-how-steps {
        grid-template-columns: 1fr;
    }

    .ex-how-arrow {
        transform: rotate(90deg);
    }
}