/* ============================================
   ETI SPA — Unified Corporate Design System
   shared-ui.css
   ============================================ */

/* ---- CSS Variables (override per-page inconsistencies) ---- */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #eff6ff;
    --success: #059669;
    --success-light: #ecfdf5;
    --warning: #d97706;
    --warning-light: #fffbeb;
    --danger: #dc2626;
    --danger-light: #fef2f2;
    --purple: #7c3aed;
    --purple-light: #f5f3ff;

    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;

    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.08);

    --font-sans: -apple-system, BlinkMacSystemFont, 'Inter', 'SF Pro Display', 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;
}

/* ---- Base Reset ---- */
body {
    font-family: var(--font-sans);
    background: var(--gray-50);
    color: var(--gray-900);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ---- Typography ---- */
.page-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-900);
    letter-spacing: -0.02em;
}

.page-subtitle {
    font-size: 14px;
    color: var(--gray-500);
    font-weight: 400;
}

.section-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--gray-800);
    letter-spacing: -0.01em;
}

/* ---- Cards ---- */
.ui-card {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 20px;
    box-shadow: var(--shadow-sm);
}

.ui-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--gray-100);
}

/* ---- Buttons (corporate style) ---- */
.ui-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 16px;
    font-size: 13px;
    font-weight: 600;
    font-family: var(--font-sans);
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.15s ease;
    text-decoration: none;
    white-space: nowrap;
    line-height: 1.4;
}

.ui-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.ui-btn:active {
    transform: translateY(0);
}

.ui-btn-primary {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.ui-btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
}

.ui-btn-secondary {
    background: white;
    color: var(--gray-700);
    border-color: var(--gray-200);
}

.ui-btn-secondary:hover {
    background: var(--gray-50);
    border-color: var(--gray-300);
}

.ui-btn-success {
    background: var(--success);
    color: white;
}

.ui-btn-danger {
    background: white;
    color: var(--danger);
    border-color: var(--gray-200);
}

.ui-btn-danger:hover {
    background: var(--danger-light);
    border-color: var(--danger);
}

.ui-btn-sm {
    padding: 6px 10px;
    font-size: 12px;
}

.ui-btn-xs {
    padding: 4px 8px;
    font-size: 11px;
}

/* ---- Stat Cards ---- */
.ui-stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.ui-stat-card {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 16px 20px;
    box-shadow: var(--shadow-sm);
}

.ui-stat-label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray-500);
    margin-bottom: 4px;
}

.ui-stat-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--gray-900);
    letter-spacing: -0.02em;
}

.ui-stat-value.success { color: var(--success); }
.ui-stat-value.danger { color: var(--danger); }
.ui-stat-value.warning { color: var(--warning); }

/* ---- Tabs (clean corporate style) ---- */
.ui-tabs {
    display: flex;
    gap: 2px;
    background: var(--gray-100);
    padding: 3px;
    border-radius: var(--radius-md);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    margin-bottom: 20px;
}

.ui-tabs::-webkit-scrollbar {
    display: none;
}

.ui-tab {
    padding: 8px 16px;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 500;
    font-size: 13px;
    color: var(--gray-600);
    white-space: nowrap;
    transition: all 0.15s ease;
    font-family: var(--font-sans);
}

.ui-tab:hover {
    color: var(--gray-800);
    background: rgba(255, 255, 255, 0.6);
}

.ui-tab.active {
    background: white;
    color: var(--primary);
    font-weight: 600;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

/* ---- Tables ---- */
.ui-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.ui-table thead th {
    text-align: left;
    padding: 10px 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray-500);
    background: var(--gray-50);
    border-bottom: 1px solid var(--gray-200);
}

.ui-table tbody td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--gray-100);
    color: var(--gray-700);
}

.ui-table tbody tr:hover {
    background: var(--gray-50);
}

/* ---- Forms ---- */
.ui-input,
.ui-select {
    width: 100%;
    padding: 9px 12px;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: 14px;
    font-family: var(--font-sans);
    color: var(--gray-900);
    background: white;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.ui-input:focus,
.ui-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.ui-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 6px;
}

/* ---- Badges ---- */
.ui-badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    font-size: 11px;
    font-weight: 600;
    border-radius: 20px;
    letter-spacing: 0.02em;
}

.ui-badge-blue { background: var(--primary-light); color: var(--primary); }
.ui-badge-green { background: var(--success-light); color: var(--success); }
.ui-badge-yellow { background: var(--warning-light); color: var(--warning); }
.ui-badge-red { background: var(--danger-light); color: var(--danger); }
.ui-badge-gray { background: var(--gray-100); color: var(--gray-600); }

/* ---- Content Layout ---- */
.ui-content {
    max-width: 1440px;
    margin: 0 auto;
    padding: 20px 24px 48px;
}

/* ---- Action Bar (below header, for page-specific actions) ---- */
.ui-action-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    padding: 12px 24px;
    max-width: 1440px;
    margin: 0 auto;
    border-bottom: 1px solid var(--gray-100);
    background: white;
}

.ui-action-bar-group {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

/* ---- Search Bar ---- */
.ui-search {
    position: relative;
}

.ui-search input {
    width: 100%;
    padding: 9px 12px 9px 36px;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: 14px;
    font-family: var(--font-sans);
    background: white;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.ui-search input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.ui-search-icon {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-400);
    font-size: 14px;
    pointer-events: none;
}

/* ---- Empty State ---- */
.ui-empty {
    text-align: center;
    padding: 48px 24px;
    color: var(--gray-400);
}

.ui-empty-icon {
    font-size: 48px;
    margin-bottom: 12px;
    opacity: 0.5;
}

.ui-empty-text {
    font-size: 14px;
    color: var(--gray-500);
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
    .ui-content {
        padding: 16px 16px 40px;
    }

    .ui-stat-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }

    .ui-stat-card {
        padding: 12px 14px;
    }

    .ui-stat-value {
        font-size: 20px;
    }

    .ui-action-bar {
        padding: 10px 16px;
    }
}

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

/* ---- Print ---- */
@media print {
    .ui-action-bar {
        display: none !important;
    }
}

/* ---- User badge (readonly state) ---- */
.user-badge.readonly {
    background: var(--warning-light);
    color: var(--warning);
    border: 1px solid #fcd34d;
}