/**
 * Twigor v2.0 - Modern Dashboard Styles
 */

/* ============================================
   CSS Variables
   ============================================ */
:root {
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --primary-light: #93c5fd;
    --success: #10b981;
    --success-bg: #d1fae5;
    --warning: #f59e0b;
    --warning-bg: #fef3c7;
    --danger: #ef4444;
    --danger-bg: #fee2e2;
    --info: #8b5cf6;
    --info-bg: #ede9fe;
    
    --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;
    
    --bg-body: #f3f4f6;
    --bg-card: #ffffff;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --border-color: #e5e7eb;
    
    --sidebar-width: 250px;
    --sidebar-width-collapsed: 70px;
    --topbar-height: 64px;
    --border-radius: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
    
    --transition: all 0.2s ease;
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

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

a {
    color: var(--primary);
    text-decoration: none;
}

a:hover {
    color: var(--primary-dark);
}

img {
    max-width: 100%;
    height: auto;
}

/* ============================================
   Layout
   ============================================ */
.app-container {
    display: flex;
    min-height: 100vh;
}

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

.page-content {
    flex: 1;
    padding: 24px;
}

/* ============================================
   Sidebar
   ============================================ */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--gray-900);
    color: white;
    z-index: 100;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

.sidebar-header {
    height: var(--topbar-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: white;
    font-weight: 700;
    font-size: 20px;
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: var(--primary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-icon svg {
    width: 20px;
    height: 20px;
}

.sidebar-close {
    display: none;
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    padding: 8px;
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 16px 0;
}

.nav-list {
    list-style: none;
}

.nav-divider {
    height: 1px;
    background: rgba(255,255,255,0.1);
    margin: 12px 16px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: var(--gray-400);
    transition: var(--transition);
    font-size: 14px;
    font-weight: 500;
}

.nav-link:hover {
    color: white;
    background: rgba(255,255,255,0.05);
}

.nav-link svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.nav-item.active > .nav-link {
    color: white;
    background: rgba(59, 130, 246, 0.2);
    border-right: 3px solid var(--primary);
}

.nav-link.has-dropdown {
    justify-content: flex-start;
}

.nav-link.has-dropdown .dropdown-arrow {
    margin-left: auto;
    transition: transform 0.2s;
}

.nav-item.dropdown-open .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown-menu {
    display: none;
    list-style: none;
    background: rgba(0,0,0,0.2);
}

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

.dropdown-link {
    display: block;
    padding: 10px 20px 10px 52px;
    color: var(--gray-400);
    font-size: 13px;
    transition: var(--transition);
}

.dropdown-link:hover {
    color: white;
}

.dropdown-link.active {
    color: var(--primary-light);
}

.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

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

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 99;
}

/* ============================================
   Top Bar
   ============================================ */
.top-bar {
    height: var(--topbar-height);
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 50;
}

.top-bar-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    padding: 8px;
    cursor: pointer;
    color: var(--gray-600);
}

.page-title {
    font-size: 18px;
    font-weight: 600;
}

.top-bar-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.lang-switcher {
    display: flex;
    gap: 4px;
}

.lang-btn {
    padding: 6px 10px;
    font-size: 12px;
    font-weight: 600;
    color: var(--gray-500);
    background: var(--gray-100);
    border-radius: 4px;
    transition: var(--transition);
}

.lang-btn:hover {
    background: var(--gray-200);
    color: var(--gray-700);
}

.lang-btn.active {
    background: var(--primary);
    color: white;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-email {
    font-size: 14px;
    color: var(--gray-600);
}

.logout-btn {
    padding: 8px;
    color: var(--gray-500);
    transition: var(--transition);
}

.logout-btn:hover {
    color: var(--danger);
}

/* ============================================
   Alerts
   ============================================ */
.alert {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    margin: 0 24px 16px;
    border-radius: var(--border-radius);
    font-size: 14px;
    transition: opacity 0.3s;
}

.alert-success {
    background: var(--success-bg);
    color: #065f46;
}

.alert-error {
    background: var(--danger-bg);
    color: #991b1b;
}

.alert-warning {
    background: var(--warning-bg);
    color: #92400e;
}

.alert-info {
    background: var(--info-bg);
    color: #5b21b6;
}

.alert-close {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    opacity: 0.7;
}

.alert-close:hover {
    opacity: 1;
}

/* ============================================
   Cards
   ============================================ */
.card {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

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

.card-title {
    font-size: 16px;
    font-weight: 600;
}

.card-body {
    padding: 20px;
}

.card-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
    background: var(--gray-50);
}

/* Stat Cards */
.stat-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 20px;
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

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

.stat-icon.blue { background: #dbeafe; color: #2563eb; }
.stat-icon.green { background: #d1fae5; color: #059669; }
.stat-icon.purple { background: #ede9fe; color: #7c3aed; }
.stat-icon.orange { background: #ffedd5; color: #ea580c; }

.stat-content {
    flex: 1;
}

.stat-value {
    font-size: 28px;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 4px;
}

.stat-label {
    font-size: 13px;
    color: var(--text-secondary);
}

/* ============================================
   Tables
   ============================================ */
.table-container {
    overflow-x: auto;
}

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

.table th {
    background: var(--gray-50);
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    font-size: 13px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

.table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
}

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

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

/* ============================================
   Forms
   ============================================ */
.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    font-size: 14px;
}

.form-control {
    width: 100%;
    padding: 10px 14px;
    font-size: 14px;
    font-family: inherit;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: white;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

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

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

.form-hint {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 4px;
}

.form-error {
    font-size: 12px;
    color: var(--danger);
    margin-top: 4px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 16px;
    font-size: 14px;
    font-weight: 500;
    font-family: inherit;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-decoration: none;
}

.btn svg {
    width: 18px;
    height: 18px;
}

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

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

.btn-secondary {
    background: var(--gray-100);
    color: var(--gray-700);
}

.btn-secondary:hover {
    background: var(--gray-200);
}

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

.btn-success:hover {
    background: #059669;
    color: white;
}

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

.btn-danger:hover {
    background: #dc2626;
    color: white;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--gray-700);
}

.btn-outline:hover {
    background: var(--gray-50);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

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

.btn-lg {
    padding: 14px 24px;
    font-size: 16px;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-group {
    display: flex;
    gap: 8px;
}

/* ============================================
   Badges
   ============================================ */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 500;
    border-radius: 9999px;
}

.badge-success { background: var(--success-bg); color: #065f46; }
.badge-warning { background: var(--warning-bg); color: #92400e; }
.badge-danger { background: var(--danger-bg); color: #991b1b; }
.badge-info { background: var(--info-bg); color: #5b21b6; }
.badge-gray { background: var(--gray-100); color: var(--gray-700); }
.badge-primary { background: #dbeafe; color: #1d4ed8; }

/* ============================================
   Progress Bar
   ============================================ */
.progress {
    height: 8px;
    background: var(--gray-200);
    border-radius: 9999px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    border-radius: 9999px;
    transition: width 0.3s;
}

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

/* ============================================
   Auth Pages
   ============================================ */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: linear-gradient(135deg, var(--gray-900) 0%, var(--gray-800) 100%);
}

.auth-card {
    width: 100%;
    max-width: 400px;
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    padding: 40px;
}

.auth-logo {
    text-align: center;
    margin-bottom: 32px;
}

.auth-logo .logo-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 16px;
}

.auth-logo .logo-icon svg {
    width: 32px;
    height: 32px;
}

.auth-logo h1 {
    font-size: 24px;
    font-weight: 700;
}

.auth-form .btn {
    width: 100%;
    margin-top: 8px;
}

/* ============================================
   Utilities
   ============================================ */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-secondary); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }

.mt-1 { margin-top: 4px; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 16px; }
.mt-4 { margin-top: 24px; }
.mb-1 { margin-bottom: 4px; }
.mb-2 { margin-bottom: 8px; }
.mb-3 { margin-bottom: 16px; }
.mb-4 { margin-bottom: 24px; }

.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 4px; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 16px; }

.w-100 { width: 100%; }

/* Spinner */
.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: spin 0.75s linear infinite;
}

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

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

.empty-state svg {
    width: 48px;
    height: 48px;
    margin-bottom: 16px;
    opacity: 0.5;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .sidebar-overlay.show {
        display: block;
    }
    
    .sidebar-close {
        display: block;
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .stat-cards {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .page-content {
        padding: 16px;
    }
    
    .stat-cards {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .top-bar {
        padding: 0 16px;
    }
    
    .user-email {
        display: none;
    }
    
    .card-header {
        flex-direction: column;
        gap: 12px;
        align-items: flex-start;
    }
    
    .btn-group {
        flex-direction: column;
        width: 100%;
    }
    
    .btn-group .btn {
        width: 100%;
    }
}