/* Ergo Explorer - Modern CSS */
/* High-performance, minimal CSS for fast rendering */

:root {
    /* Dark theme (default) */
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --accent: #58a6ff;
    --accent-hover: #79b8ff;
    --success: #3fb950;
    --warning: #d29922;
    --error: #f85149;
    --border: #30363d;
    --shadow: 0 3px 6px rgba(0,0,0,0.4);
    --radius: 6px;
    --radius-lg: 12px;
}

[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f6f8fa;
    --bg-tertiary: #eaeef2;
    --text-primary: #1f2328;
    --text-secondary: #656d76;
    --text-muted: #8c959f;
    --accent: #0969da;
    --accent-hover: #0550ae;
    --border: #d0d7de;
    --shadow: 0 3px 6px rgba(0,0,0,0.1);
}

/* Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', Helvetica, Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
}

/* Layout */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

#app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.main {
    flex: 1;
    padding: 24px 0;
}

/* Header */
.header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    align-items: center;
    gap: 24px;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.25rem;
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: var(--accent);
    color: white;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

/* Navigation */
.nav {
    display: flex;
    gap: 4px;
}

.nav-link {
    padding: 8px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius);
    transition: background 0.15s, color 0.15s;
    font-weight: 500;
}

.nav-link:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.nav-link.active {
    color: var(--accent);
    background: rgba(88, 166, 255, 0.1);
}

/* Search */
.search-container {
    flex: 1;
    max-width: 500px;
    display: flex;
    position: relative;
}

.search-input {
    width: 100%;
    padding: 10px 44px 10px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.15s;
}

.search-input:focus {
    border-color: var(--accent);
}

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

.search-btn {
    position: absolute;
    right: 4px;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.search-btn:hover {
    color: var(--accent);
}

/* Theme Toggle */
.theme-toggle {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius);
    transition: background 0.15s;
}

.theme-toggle:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

[data-theme="light"] .theme-toggle .sun { display: none; }
[data-theme="light"] .theme-toggle .moon { display: block; }
.theme-toggle .sun { display: block; }
.theme-toggle .moon { display: none; }

/* Stats Section */
.stats-section {
    margin-bottom: 32px;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
    transition: transform 0.15s, box-shadow 0.15s;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    font-family: 'SF Mono', 'Fira Code', monospace;
}

/* Two Column Layout */
.two-column {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

@media (max-width: 900px) {
    .two-column {
        grid-template-columns: 1fr;
    }
}

.column {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
}

.section-header h3 {
    font-size: 1rem;
    font-weight: 600;
}

.view-all {
    font-size: 0.85rem;
    color: var(--accent);
    text-decoration: none;
}

.view-all:hover {
    text-decoration: underline;
}

/* Data List */
.data-list {
    max-height: 500px;
    overflow-y: auto;
}

.data-row {
    padding: 14px 20px;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    transition: background 0.1s;
}

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

.data-row:hover {
    background: var(--bg-tertiary);
}

.row-main {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 4px;
}

.row-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Block Row */
.block-height {
    font-weight: 600;
    color: var(--accent);
    min-width: 70px;
}

.block-hash {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.85rem;
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 300px;
}

/* Transaction Row */
.tx-hash {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.9rem;
    color: var(--accent);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 350px;
}

.tx-amount {
    font-weight: 500;
    color: var(--success);
}

.time-ago {
    color: var(--text-muted);
}

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

/* Detail View */
.detail-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
}

.detail-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.detail-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.detail-subtitle {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.9rem;
    color: var(--text-secondary);
    word-break: break-all;
}

.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.detail-item {
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border-radius: var(--radius);
}

.detail-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.detail-value {
    font-family: 'SF Mono', 'Fira Code', monospace;
    color: var(--text-primary);
    word-break: break-all;
}

/* Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.data-table th {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.85rem;
    background: var(--bg-tertiary);
}

.data-table tr:hover td {
    background: var(--bg-tertiary);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    padding: 20px;
}

.page-btn {
    padding: 8px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-primary);
    cursor: pointer;
    transition: background 0.15s;
}

.page-btn:hover:not(:disabled) {
    background: var(--accent);
    border-color: var(--accent);
}

.page-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.page-info {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Loading State */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    color: var(--text-muted);
}

.loading::after {
    content: '';
    width: 24px;
    height: 24px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    margin-left: 12px;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Copy Button */
.copy-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    margin-left: 8px;
    border-radius: 4px;
    transition: color 0.15s;
}

.copy-btn:hover {
    color: var(--accent);
}

.copy-btn.copied {
    color: var(--success);
}

/* Badge */
.badge {
    display: inline-block;
    padding: 2px 8px;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 10px;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.badge-success {
    background: rgba(63, 185, 80, 0.15);
    color: var(--success);
}

.badge-warning {
    background: rgba(210, 153, 34, 0.15);
    color: var(--warning);
}

.badge-error {
    background: rgba(248, 81, 73, 0.15);
    color: var(--error);
}

/* Token badges in transaction inputs/outputs */
.row-tokens {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-top: 6px;
    padding-top: 6px;
    border-top: 1px dashed var(--border);
}

.token-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    font-size: 0.7rem;
    font-weight: 500;
    border-radius: 8px;
    background: rgba(139, 92, 246, 0.15);
    color: #a78bfa;
    cursor: pointer;
    transition: background 0.2s;
}

.token-badge:hover {
    background: rgba(139, 92, 246, 0.25);
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 20px 0;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

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

.footer-links a:hover {
    text-decoration: underline;
}

.footer-links .separator {
    margin: 0 8px;
    color: var(--text-muted);
}

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        flex-wrap: wrap;
        height: auto;
        padding: 12px 0;
        gap: 12px;
    }

    .nav {
        order: 3;
        width: 100%;
        overflow-x: auto;
    }

    .search-container {
        order: 2;
        max-width: none;
    }

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

    .block-hash, .tx-hash {
        max-width: 200px;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .logo-text {
        display: none;
    }

    .nav-link {
        padding: 8px 12px;
        font-size: 0.9rem;
    }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}