/* Cloudflare D1 Administration Interface - Production Dark Theme */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    /* Color Palette */
    --bg-primary: #090d16;
    --bg-secondary: #0f172a;
    --card-bg: #1e293b;
    --card-bg-subtle: rgba(30, 41, 59, 0.7);
    --input-bg: #0b1329;

    --border-color: rgba(255, 255, 255, 0.08);
    --border-focus: #6366f1;
    --border-hover: rgba(255, 255, 255, 0.16);

    /* Brand & Accents */
    --accent-color: #6366f1;
    --accent-hover: #4f46e5;
    --accent-glow: rgba(99, 102, 241, 0.25);

    --success: #10b981;
    --success-glow: rgba(16, 185, 129, 0.2);
    --warning: #f59e0b;
    --danger: #ef4444;
    --danger-glow: rgba(239, 68, 68, 0.2);

    /* Typography */
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Spacing & Borders */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-full: 9999px;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 12px 28px rgba(0, 0, 0, 0.6);

    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
    background-image: 
        radial-gradient(circle at 15% 15%, rgba(99, 102, 241, 0.05) 0%, transparent 45%),
        radial-gradient(circle at 85% 85%, rgba(16, 185, 129, 0.04) 0%, transparent 45%);
    -webkit-font-smoothing: antialiased;
}

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

/* Top Navigation Header */
.app-header {
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 0.85rem 1.75rem;
}

.header-content {
    max-width: 1600px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

.brand-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #ea580c, #f97316);
    color: #ffffff;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 16px rgba(249, 115, 22, 0.35);
    flex-shrink: 0;
}

.brand-info h1 {
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--text-primary);
}

.brand-sub {
    font-size: 0.75rem;
    color: var(--text-secondary);
    display: block;
}

/* Worker API Configuration Bar */
.api-config-bar {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    padding: 0.4rem 0.85rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    flex-wrap: wrap;
}

.api-label {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-secondary);
    white-space: nowrap;
}

.api-input-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex: 1;
}

.api-input {
    background: transparent;
    border: none;
    outline: none;
    color: #a5b4fc;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    min-width: 280px;
    width: 100%;
}

.api-status {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 0.75rem;
    color: var(--text-muted);
    padding-left: 0.85rem;
    border-left: 1px solid var(--border-color);
    white-space: nowrap;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--text-muted);
    transition: var(--transition);
}

.status-dot.connected { background-color: var(--success); box-shadow: 0 0 8px var(--success-glow); }
.status-dot.error { background-color: var(--danger); box-shadow: 0 0 8px var(--danger-glow); }

/* Main Workspace */
.main-workspace {
    flex: 1;
    display: grid;
    grid-template-columns: 420px 1fr;
    gap: 1.5rem;
    padding: 1.75rem;
    max-width: 1600px;
    margin: 0 auto;
    width: 100%;
}

@media (max-width: 1120px) {
    .main-workspace {
        grid-template-columns: 1fr;
    }
}

/* Panel Card */
.panel-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.25rem;
    gap: 1rem;
}

.panel-header.flex-header {
    align-items: center;
}

.panel-title-wrapper h2 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
}

.panel-sub {
    font-size: 0.78rem;
    color: var(--text-secondary);
    margin-top: 0.15rem;
}

/* Form Grid System */
.city-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

@media (max-width: 576px) {
    .form-grid {
        grid-template-columns: 1fr;
    }
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.label-with-action {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.form-group input,
.form-group textarea {
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.65rem 0.85rem;
    color: var(--text-primary);
    font-size: 0.85rem;
    font-family: inherit;
    outline: none;
    transition: var(--transition);
    width: 100%;
}

.uppercase-input {
    text-transform: uppercase;
}

.code-textarea {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    line-height: 1.5;
    resize: vertical;
    min-height: 110px;
    tab-size: 2;
}

.form-group input:hover,
.form-group textarea:hover {
    border-color: var(--border-hover);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--accent-glow);
    background: #0d162c;
}

.form-group input.invalid,
.form-group textarea.invalid {
    border-color: var(--danger);
    box-shadow: 0 0 0 3px var(--danger-glow);
}

.field-hint {
    font-size: 0.72rem;
    color: var(--text-muted);
}

.field-hint.error {
    color: var(--danger);
}

.form-actions {
    margin-top: 0.25rem;
}

/* Toolbar Controls */
.table-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.25rem;
    flex-wrap: wrap;
}

.search-box {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.5rem 0.85rem;
    flex: 1;
    min-width: 260px;
    color: var(--text-muted);
    transition: var(--transition);
}

.search-box:focus-within {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.search-box input {
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-size: 0.85rem;
    width: 100%;
}

.record-counter {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.05);
    padding: 0.3rem 0.75rem;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-color);
}

/* Responsive Table */
.table-responsive {
    overflow-x: auto;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background: var(--input-bg);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
    text-align: left;
    white-space: nowrap;
}

.data-table th {
    background: #151e2e;
    padding: 0.85rem 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 10;
}

.data-table td {
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    vertical-align: middle;
}

.data-table tbody tr {
    transition: var(--transition);
}

.data-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.03);
}

.table-empty {
    text-align: center;
    padding: 3.5rem !important;
    color: var(--text-muted);
}

.json-badge {
    display: inline-block;
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    background: rgba(99, 102, 241, 0.12);
    border: 1px solid rgba(99, 102, 241, 0.25);
    padding: 0.2rem 0.55rem;
    border-radius: var(--radius-sm);
    color: #a5b4fc;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.1rem;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid transparent;
    transition: var(--transition);
    outline: none;
    user-select: none;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

.btn-sm {
    padding: 0.35rem 0.75rem;
    font-size: 0.78rem;
}

.btn-primary {
    background: var(--accent-color);
    color: #ffffff;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    background: var(--accent-hover);
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.45);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--border-hover);
}

.btn-danger-text {
    background: transparent;
    border: none;
    color: var(--danger);
    cursor: pointer;
    font-size: 0.78rem;
    padding: 0.3rem 0.55rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
    transition: var(--transition);
}

.btn-danger-text:hover {
    background: var(--danger-glow);
}

.btn-text {
    background: transparent;
    border: none;
    color: var(--accent-color);
    font-size: 0.8rem;
    cursor: pointer;
    font-weight: 500;
}

.btn-text:hover { text-decoration: underline; }

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

.text-right { text-align: right; }
.hidden { display: none !important; }

/* Spinner Icon */
.spin-icon {
    animation: spin 0.9s linear infinite;
}

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

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    z-index: 1000;
}

.toast {
    background: #1e293b;
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--accent-color);
    border-radius: var(--radius-md);
    padding: 0.85rem 1.25rem;
    font-size: 0.85rem;
    color: var(--text-primary);
    box-shadow: var(--shadow-lg);
    animation: toastIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.toast.success { border-left-color: var(--success); }
.toast.error { border-left-color: var(--danger); }

@keyframes toastIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Custom Scrollbars */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

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

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Mobile & Small Screen Adaptations */
@media (max-width: 768px) {
    .app-header {
        padding: 0.75rem 1rem;
    }

    .main-workspace {
        padding: 1rem;
        gap: 1rem;
    }

    .panel-card {
        padding: 1.15rem;
    }

    .api-config-bar {
        width: 100%;
    }

    .api-input {
        min-width: 180px;
    }

    .toast-container {
        bottom: 1rem;
        right: 1rem;
        left: 1rem;
    }
}