/**
 * ============================================
 * SPANNER ERP - DESIGN SYSTEM v1.0
 * Modern Professional ERP Interface
 * ============================================
 *
 * This file contains the complete design system for Spanner ERP.
 * Import this file in any template that extends the UI base.
 *
 * Usage: {% load static %}
 *        <link rel="stylesheet" href="{% static 'ui/css/design-system.css' %}">
 */

/* ============================================
   CSS CUSTOM PROPERTIES (Design Tokens)
   ============================================ */

:root {
    /* Primary Colors - Professional Blue */
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-200: #bfdbfe;
    --primary-300: #93c5fd;
    --primary-400: #60a5fa;
    --primary-500: #3b82f6;
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    --primary-800: #1e40af;
    --primary-900: #1e3a8a;

    /* Neutral Colors - Refined Grays */
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;

    /* Success Colors (Green) */
    --success-50: #ecfdf5;
    --success-100: #d1fae5;
    --success-500: #10b981;
    --success-600: #059669;
    --success-700: #047857;

    /* Warning Colors (Amber) */
    --warning-50: #fffbeb;
    --warning-100: #fef3c7;
    --warning-500: #f59e0b;
    --warning-600: #d97706;
    --warning-700: #b45309;

    /* Danger Colors (Red) */
    --danger-50: #fef2f2;
    --danger-100: #fee2e2;
    --danger-500: #ef4444;
    --danger-600: #dc2626;
    --danger-700: #b91c1c;

    /* Info Colors (Blue) */
    --info-50: #eff6ff;
    --info-100: #dbeafe;
    --info-500: #3b82f6;
    --info-600: #2563eb;
    --info-700: #1d4ed8;

    /* Purple */
    --purple-50: #faf5ff;
    --purple-100: #f3e8ff;
    --purple-500: #a855f7;
    --purple-600: #9333ea;

    /* Orange */
    --orange-50: #fff7ed;
    --orange-100: #ffedd5;
    --orange-500: #f97316;
    --orange-600: #ea580c;

    /* Teal */
    --teal-50: #f0fdfa;
    --teal-100: #ccfbf1;
    --teal-500: #14b8a6;
    --teal-600: #0d9488;

    /* Secondary (gray aliases for badge variants) */
    --secondary-50: #f8fafc;
    --secondary-100: #f1f5f9;
    --secondary-500: #64748b;
    --secondary-600: #475569;
    --secondary-700: #334155;

    /* Layout */
    --sidebar-width: 240px;
    --header-height: 56px;
    --content-max-width: 1600px;

    /* Spacing Scale */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-xl: 12px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'SF Mono', SFMono-Regular, Consolas, 'Liberation Mono', Menlo, monospace;
}


/* ============================================
   RESET & BASE STYLES
   ============================================ */

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

html {
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    background-color: var(--gray-100);
    color: var(--gray-800);
    line-height: 1.5;
    min-height: 100vh;
}

a {
    color: inherit;
    text-decoration: none;
}


/* ============================================
   LAYOUT STRUCTURE
   ============================================ */

.app-layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar Navigation */
.sidebar {
    width: var(--sidebar-width);
    background: var(--gray-900);
    color: var(--gray-100);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    transition: transform 0.2s ease;
}

.sidebar-header {
    padding: var(--space-5);
    border-bottom: 1px solid var(--gray-700);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.sidebar-logo-icon {
    width: 32px;
    height: 32px;
    background: var(--primary-600);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: white;
    font-size: 14px;
}

.sidebar-logo-text {
    font-size: 18px;
    font-weight: 700;
    color: white;
}

.sidebar-nav {
    flex: 1;
    padding: var(--space-4);
    overflow-y: auto;
}

.nav-section {
    margin-bottom: var(--space-6);
}

.nav-section-title {
    font-size: 11px;
    font-weight: 600;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--space-2) var(--space-3);
    margin-bottom: var(--space-1);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    color: var(--gray-400);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.15s ease;
}

.nav-link:hover {
    background: var(--gray-800);
    color: var(--gray-100);
}

.nav-link.active {
    background: var(--primary-600);
    color: white;
}

.nav-link-icon {
    width: 18px;
    height: 18px;
    opacity: 0.7;
}

.nav-link.active .nav-link-icon {
    opacity: 1;
}

.sidebar-footer {
    padding: var(--space-4);
    border-top: 1px solid var(--gray-700);
}

.user-menu {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background 0.15s ease;
}

.user-menu:hover {
    background: var(--gray-800);
}

.user-avatar {
    width: 32px;
    height: 32px;
    background: var(--primary-600);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: white;
    font-size: 12px;
}

.user-info {
    flex: 1;
    min-width: 0;
}

.user-name {
    font-size: 13px;
    font-weight: 500;
    color: var(--gray-100);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-role {
    font-size: 11px;
    color: var(--gray-500);
}

/* Main Content Area */
.main-wrapper {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
}

/* Top Header Bar */
.top-header {
    height: var(--header-height);
    background: white;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-6);
    position: sticky;
    top: 0;
    z-index: 50;
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 13px;
}

.breadcrumb-item {
    color: var(--gray-500);
    text-decoration: none;
}

.breadcrumb-item:hover {
    color: var(--primary-600);
}

.breadcrumb-separator {
    color: var(--gray-400);
}

.breadcrumb-current {
    color: var(--gray-800);
    font-weight: 500;
}

/* Header Navigation Group (breadcrumb + quick actions) */
.header-nav-group {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

/* Quick Actions Bar */
.quick-actions {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    flex-wrap: wrap;
}

.quick-actions-label {
    font-size: 11px;
    color: var(--gray-400);
    margin-right: var(--space-1);
}

.quick-action {
    font-size: 11px;
    color: var(--gray-500);
    text-decoration: none;
    padding: 1px 6px;
    border-radius: var(--radius-sm);
    transition: all 0.15s ease;
    white-space: nowrap;
}

.quick-action:hover {
    color: var(--primary-600);
    background: var(--primary-50);
}

.quick-action:active {
    background: var(--primary-100);
}

/* Quick action separator */
.quick-action-sep {
    color: var(--gray-300);
    font-size: 10px;
    user-select: none;
}

/* Quick action variants */
.quick-action--primary {
    color: var(--primary-600);
    font-weight: 500;
}

.quick-action--primary:hover {
    background: var(--primary-100);
}

.quick-action--success {
    color: var(--success-600);
}

.quick-action--success:hover {
    color: var(--success-700);
    background: var(--success-50);
}

.quick-action--warning {
    color: var(--warning-600);
}

.quick-action--warning:hover {
    color: var(--warning-700);
    background: var(--warning-50);
}

.quick-action--danger {
    color: var(--danger-600);
}

.quick-action--danger:hover {
    color: var(--danger-700);
    background: var(--danger-50);
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.header-search {
    position: relative;
}

.header-search input {
    width: 280px;
    padding: var(--space-2) var(--space-3) var(--space-2) 36px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: 13px;
    background: var(--gray-50);
    transition: all 0.15s ease;
}

.header-search input:focus {
    outline: none;
    border-color: var(--primary-500);
    background: white;
    box-shadow: 0 0 0 3px var(--primary-100);
}

.header-search input::placeholder {
    color: var(--gray-400);
}

.header-search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-400);
    width: 16px;
    height: 16px;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: var(--space-6);
    max-width: var(--content-max-width);
    width: 100%;
    margin: 0 auto;
}


/* ============================================
   PAGE HEADER
   ============================================ */

.page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: var(--space-6);
    gap: var(--space-4);
}

.page-header-content {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.page-icon {
    width: 48px;
    height: 48px;
    background: var(--primary-100);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-600);
}

.page-icon svg {
    width: 24px;
    height: 24px;
}

.page-title-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.page-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--gray-900);
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.page-subtitle {
    font-size: 13px;
    color: var(--gray-500);
}

.page-actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}


/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-size: 13px;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.15s ease;
    text-decoration: none;
    white-space: nowrap;
}

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

.btn svg {
    width: 16px;
    height: 16px;
}

/* Primary Button */
.btn-primary {
    background: var(--primary-600);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background: var(--primary-700);
}

/* Secondary Button */
.btn-secondary {
    background: white;
    color: var(--gray-700);
    border-color: var(--gray-300);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--gray-50);
    border-color: var(--gray-400);
}

/* Success Button */
.btn-success {
    background: var(--success-600);
    color: white;
}

.btn-success:hover:not(:disabled) {
    background: var(--success-700);
}

/* Danger Button */
.btn-danger {
    background: var(--danger-500);
    color: white;
}

.btn-danger:hover:not(:disabled) {
    background: var(--danger-600);
}

/* Ghost Button */
.btn-ghost {
    background: transparent;
    color: var(--gray-600);
}

.btn-ghost:hover:not(:disabled) {
    background: var(--gray-100);
}

/* Button Sizes */
.btn-sm {
    padding: var(--space-1) var(--space-3);
    font-size: 12px;
}

.btn-lg {
    padding: var(--space-3) var(--space-5);
    font-size: 14px;
}

/* Icon-only Button */
.btn-icon {
    padding: var(--space-2);
}


/* ============================================
   CARDS
   ============================================ */

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

.card-header {
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
}

.card-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-900);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.card-title-icon {
    width: 18px;
    height: 18px;
    color: var(--gray-400);
}

.card-actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.card-body {
    padding: var(--space-5);
}

.card-body-compact {
    padding: var(--space-3) var(--space-4);
}

.card-body-flush {
    padding: 0;
}

.card-footer {
    padding: var(--space-3) var(--space-5);
    border-top: 1px solid var(--gray-200);
    background: var(--gray-50);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}


/* ============================================
   BADGES & STATUS INDICATORS
   ============================================ */

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: 2px 8px;
    border-radius: 9999px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
}

/* Badge Variants */
.badge-gray {
    background: var(--gray-100);
    color: var(--gray-600);
}
.badge-gray .badge-dot { background: var(--gray-500); }

.badge-blue {
    background: var(--info-100);
    color: var(--info-600);
}
.badge-blue .badge-dot { background: var(--info-500); }

.badge-green {
    background: var(--success-100);
    color: var(--success-700);
}
.badge-green .badge-dot { background: var(--success-500); }

.badge-yellow {
    background: var(--warning-100);
    color: var(--warning-600);
}
.badge-yellow .badge-dot { background: var(--warning-500); }

.badge-red {
    background: var(--danger-100);
    color: var(--danger-600);
}
.badge-red .badge-dot { background: var(--danger-500); }

.badge-purple {
    background: var(--purple-100);
    color: var(--purple-600);
}
.badge-purple .badge-dot { background: var(--purple-500); }

.badge-orange {
    background: var(--orange-100);
    color: var(--orange-600);
}
.badge-orange .badge-dot { background: var(--orange-500); }

.badge-teal {
    background: var(--teal-100);
    color: var(--teal-600);
}
.badge-teal .badge-dot { background: var(--teal-500); }


/* ============================================
   DATA DISPLAY - KEY-VALUE PAIRS
   ============================================ */

.data-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-4);
}

.data-grid-dense {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-3);
}

.data-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.data-label {
    font-size: 11px;
    font-weight: 500;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.data-value {
    font-size: 13px;
    color: var(--gray-900);
    font-weight: 500;
}

.data-value-lg {
    font-size: 20px;
    font-weight: 700;
}

.data-value-mono {
    font-family: var(--font-mono);
    font-size: 13px;
}

.data-value-link {
    color: var(--primary-600);
    text-decoration: none;
}

.data-value-link:hover {
    text-decoration: underline;
}

.data-value-muted {
    color: var(--gray-400);
}

/* Inline Data Display */
.data-inline {
    display: flex;
    align-items: center;
    gap: var(--space-6);
    flex-wrap: wrap;
}

.data-inline .data-item {
    flex-direction: row;
    align-items: center;
    gap: var(--space-2);
}

.data-inline .data-label {
    text-transform: none;
    font-size: 12px;
}


/* ============================================
   TABLES
   ============================================ */

.table-wrapper {
    overflow-x: auto;
}

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

.table th {
    padding: var(--space-2) var(--space-3);
    text-align: left;
    font-size: 11px;
    font-weight: 600;
    color: var(--gray-600);
    text-transform: uppercase;
    letter-spacing: 0.025em;
    background: var(--gray-50);
    border-bottom: 1px solid var(--gray-200);
    white-space: nowrap;
}

.table td {
    padding: var(--space-2) var(--space-3);
    border-bottom: 1px solid var(--gray-100);
    color: var(--gray-700);
    vertical-align: middle;
}

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

.table tbody tr:last-child td {
    border-bottom: none;
}

.table-link {
    color: var(--primary-600);
    text-decoration: none;
    font-weight: 500;
}

.table-link:hover {
    text-decoration: underline;
}

/* Row-shaped links in card lists (dashboard side panels) — mirrors .table tbody tr:hover */
.list-row-link:hover {
    background: var(--gray-50);
}

.list-row-link:hover .table-link {
    text-decoration: underline;
}

.table-mono {
    font-family: var(--font-mono);
}

.table-right {
    text-align: right;
}

.table-center {
    text-align: center;
}

/* Compact Table Variant */
.table-compact th,
.table-compact td {
    padding: var(--space-1) var(--space-2);
    font-size: 12px;
}

/* Sortable columns */
.table th a {
    color: inherit;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 4px;
}

.table th a:hover {
    color: var(--gray-900);
}


/* ============================================
   PROGRESS & METRICS
   ============================================ */

.progress-bar {
    height: 6px;
    background: var(--gray-200);
    border-radius: 3px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: var(--primary-500);
    border-radius: 3px;
    transition: width 0.3s ease;
}

.progress-bar-fill.success { background: var(--success-500); }
.progress-bar-fill.warning { background: var(--warning-500); }
.progress-bar-fill.danger { background: var(--danger-500); }

.metric-card {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    padding: var(--space-4);
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
}

.metric-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--gray-900);
    line-height: 1;
}

.metric-label {
    font-size: 12px;
    color: var(--gray-500);
    font-weight: 500;
}

.metric-change {
    font-size: 12px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 2px;
}

.metric-change.positive { color: var(--success-600); }
.metric-change.negative { color: var(--danger-600); }


/* ============================================
   TIMELINE / STATUS FLOW
   ============================================ */

.timeline {
    position: relative;
}

.timeline-item {
    display: flex;
    gap: var(--space-3);
    padding-bottom: var(--space-4);
    position: relative;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 11px;
    top: 24px;
    bottom: 0;
    width: 2px;
    background: var(--gray-200);
}

.timeline-item:last-child::before {
    display: none;
}

.timeline-dot {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    z-index: 1;
}

.timeline-dot.complete {
    background: var(--success-500);
    color: white;
}

.timeline-dot.active {
    background: var(--primary-500);
    color: white;
}

.timeline-dot svg {
    width: 12px;
    height: 12px;
}

.timeline-content {
    flex: 1;
    min-width: 0;
}

.timeline-title {
    font-size: 13px;
    font-weight: 500;
    color: var(--gray-900);
}

.timeline-meta {
    font-size: 12px;
    color: var(--gray-500);
}


/* ============================================
   TABS
   ============================================ */

.tabs {
    display: flex;
    gap: var(--space-1);
    border-bottom: 1px solid var(--gray-200);
    margin-bottom: var(--space-4);
}

.tab {
    padding: var(--space-2) var(--space-4);
    font-size: 13px;
    font-weight: 500;
    color: var(--gray-500);
    text-decoration: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: all 0.15s ease;
}

.tab:hover {
    color: var(--gray-700);
}

.tab.active {
    color: var(--primary-600);
    border-bottom-color: var(--primary-600);
}

.tab-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 18px;
    height: 18px;
    padding: 0 6px;
    border-radius: 9px;
    background: var(--gray-200);
    font-size: 11px;
    font-weight: 600;
    margin-left: var(--space-2);
}

.tab.active .tab-count {
    background: var(--primary-100);
    color: var(--primary-700);
}


/* ============================================
   FORMS
   ============================================ */

.form-group {
    margin-bottom: var(--space-4);
}

.form-label {
    display: block;
    margin-bottom: var(--space-1);
    font-size: 13px;
    font-weight: 500;
    color: var(--gray-700);
}

.form-control {
    width: 100%;
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: 13px;
    font-family: inherit;
    color: var(--gray-900);
    background: white;
    transition: all 0.15s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px var(--primary-100);
}

.form-control::placeholder {
    color: var(--gray-400);
}

.form-control:disabled {
    background: var(--gray-100);
    cursor: not-allowed;
}

select.form-control {
    cursor: pointer;
}

textarea.form-control {
    resize: vertical;
    min-height: 80px;
}

.form-hint {
    margin-top: var(--space-1);
    font-size: 12px;
    color: var(--gray-500);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-4);
}

.form-error {
    margin-top: var(--space-1);
    font-size: 12px;
    color: var(--danger-600);
}

.form-control.is-invalid {
    border-color: var(--danger-500);
}

.form-control.is-invalid:focus {
    box-shadow: 0 0 0 3px var(--danger-100);
}


/* ============================================
   ALERTS / MESSAGES
   ============================================ */

.alert {
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    font-size: 13px;
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.alert-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    margin-top: 1px;
}

.alert-content {
    flex: 1;
}

.alert-title {
    font-weight: 600;
    margin-bottom: 2px;
}

.alert-info {
    background: var(--info-50);
    border: 1px solid var(--info-100);
    color: var(--info-600);
}

.alert-success {
    background: var(--success-50);
    border: 1px solid var(--success-100);
    color: var(--success-700);
}

.alert-warning {
    background: var(--warning-50);
    border: 1px solid var(--warning-100);
    color: var(--warning-600);
}

.alert-danger,
.alert-error {
    background: var(--danger-50);
    border: 1px solid var(--danger-100);
    color: var(--danger-600);
}


/* ============================================
   EMPTY STATES
   ============================================ */

.empty-state {
    text-align: center;
    padding: var(--space-8);
    color: var(--gray-500);
}

.empty-state-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--space-4);
    color: var(--gray-300);
}

.empty-state-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: var(--space-2);
}

.empty-state-text {
    font-size: 13px;
    margin-bottom: var(--space-4);
}


/* ============================================
   DROPDOWNS
   ============================================ */

.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-menu {
    position: absolute;
    right: 0;
    top: 100%;
    margin-top: 4px;
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 180px;
    z-index: 50;
    display: none;
}

.dropdown-menu.show {
    display: block;
}

.dropdown-item {
    display: block;
    padding: 8px 12px;
    font-size: 13px;
    color: var(--gray-700);
    text-decoration: none;
    transition: background 0.1s ease;
}

.dropdown-item:hover {
    background: var(--gray-50);
}

.dropdown-item.danger {
    color: var(--danger-600);
}

.dropdown-divider {
    margin: 4px 0;
    border: none;
    border-top: 1px solid var(--gray-200);
}


/* ============================================
   SECTION DIVIDERS
   ============================================ */

.section {
    margin-bottom: var(--space-6);
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-3);
    padding-bottom: var(--space-2);
    border-bottom: 1px solid var(--gray-200);
}

.section-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--gray-700);
    text-transform: uppercase;
    letter-spacing: 0.025em;
}


/* ============================================
   UTILITY CLASSES
   ============================================ */

/* Display */
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.block { display: block; }
.inline-block { display: inline-block; }
.hidden { display: none; }

/* Flexbox */
.flex-col { flex-direction: column; }
.flex-row { flex-direction: row; }
.flex-wrap { flex-wrap: wrap; }
.flex-1 { flex: 1; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }

/* Gap */
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }

/* Typography */
.text-xs { font-size: 11px; }
.text-sm { font-size: 12px; }
.text-base { font-size: 13px; }
.text-lg { font-size: 14px; }
.text-xl { font-size: 16px; }
.text-2xl { font-size: 20px; }
.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.text-muted { color: var(--gray-500); }
.text-primary { color: var(--primary-600); }
.text-success { color: var(--success-600); }
.text-warning { color: var(--warning-600); }
.text-danger { color: var(--danger-600); }
.font-mono { font-family: var(--font-mono); }
.truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Spacing - Margin */
.m-0 { margin: 0; }
.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mb-1 { margin-bottom: var(--space-1); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.ml-2 { margin-left: var(--space-2); }
.mr-2 { margin-right: var(--space-2); }

/* Spacing - Padding */
.p-0 { padding: 0; }
.p-2 { padding: var(--space-2); }
.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }

/* Width */
.w-full { width: 100%; }
.w-auto { width: auto; }

/* Border */
.border { border: 1px solid var(--gray-200); }
.border-t { border-top: 1px solid var(--gray-200); }
.border-b { border-bottom: 1px solid var(--gray-200); }
.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }

/* Background */
.bg-white { background: white; }
.bg-gray-50 { background: var(--gray-50); }
.bg-gray-100 { background: var(--gray-100); }


/* ============================================
   RESPONSIVE BREAKPOINTS
   ============================================ */

@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-wrapper {
        margin-left: 0;
    }

    .sidebar-toggle {
        display: block !important;
    }
}

@media (max-width: 768px) {
    .main-content {
        padding: var(--space-4);
    }

    .page-header {
        flex-direction: column;
        align-items: stretch;
    }

    .page-actions {
        justify-content: flex-start;
    }

    .data-grid {
        grid-template-columns: 1fr 1fr;
    }

    .header-search {
        display: none;
    }

    .tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .tab {
        white-space: nowrap;
    }
}

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

    .page-header-content {
        flex-direction: column;
        align-items: flex-start;
    }

    .page-icon {
        display: none;
    }
}


/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
    .sidebar,
    .top-header,
    .page-actions,
    .btn,
    .tabs {
        display: none !important;
    }

    .main-wrapper {
        margin-left: 0;
    }

    .main-content {
        padding: 0;
        max-width: none;
    }

    .card {
        border: 1px solid #ccc;
        box-shadow: none;
        break-inside: avoid;
    }

    body {
        background: white;
    }
}