/**
 * FastTrack Logistics - Admin Panel Stylesheet
 * Modern, clean design for admin dashboard
 */

/* =====================================================
   CSS VARIABLES
   ===================================================== */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #06b6d4;
    
    --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;
    
    --white: #ffffff;
    --black: #000000;
    
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px 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);
    
    --border-radius-sm: 0.25rem;
    --border-radius: 0.5rem;
    --border-radius-md: 0.75rem;
    --border-radius-lg: 1rem;
    --border-radius-full: 9999px;
    
    --sidebar-width: 260px;
    --header-height: 64px;
    
    --transition: all 0.3s ease;
    --transition-fast: all 0.15s ease;
}

/* =====================================================
   RESET & BASE STYLES
   ===================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-family);
    font-size: 14px;
    line-height: 1.5;
    color: var(--gray-700);
    background-color: var(--gray-100);
}

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

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

ul {
    list-style: none;
}

/* =====================================================
   LOGIN PAGE
   ===================================================== */
.login-page {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.login-container {
    width: 100%;
    max-width: 420px;
}

.login-box {
    background-color: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    padding: 2.5rem;
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header .logo {
    display: flex;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.login-header h1 {
    font-size: 1.5rem;
    color: var(--gray-900);
    margin-bottom: 0.5rem;
}

.login-header p {
    color: var(--gray-500);
    margin-bottom: 0;
}

.login-form .form-group {
    margin-bottom: 1.25rem;
}

.login-form label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--gray-700);
}

.login-form .form-control {
    width: 100%;
    padding: 0.875rem 1rem;
    font-size: 0.875rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius);
    transition: var(--transition-fast);
}

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

.btn-block {
    width: 100%;
}

.login-footer {
    margin-top: 1.5rem;
    text-align: center;
}

.login-footer a {
    color: var(--gray-500);
}

.login-footer a:hover {
    color: var(--primary-color);
}

.login-footer .hint {
    margin-top: 1rem;
    font-size: 0.75rem;
    color: var(--gray-400);
}

/* =====================================================
   BUTTONS
   ===================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.5;
    border-radius: var(--border-radius);
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition-fast);
    text-decoration: none;
}

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

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

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

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

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

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

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

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

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

.btn-info:hover {
    background-color: #0891b2;
    border-color: #0891b2;
}

.btn-outline {
    background-color: transparent;
    color: var(--gray-600);
    border-color: var(--gray-300);
}

.btn-outline:hover {
    background-color: var(--gray-100);
    border-color: var(--gray-400);
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
}

/* =====================================================
   ALERTS
   ===================================================== */
.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--border-radius);
    margin-bottom: 1.5rem;
}

.alert ul {
    margin: 0;
    padding-left: 1.25rem;
    list-style: disc;
}

.alert-success {
    background-color: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.alert-danger {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-warning {
    background-color: #fef3c7;
    color: #92400e;
    border: 1px solid #fde68a;
}

.alert-info {
    background-color: #dbeafe;
    color: #1e40af;
    border: 1px solid #bfdbfe;
}

/* =====================================================
   BADGES
   ===================================================== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.625rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--border-radius-full);
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.badge-pending {
    background-color: #fef3c7;
    color: #92400e;
}

.badge-primary {
    background-color: #dbeafe;
    color: #1e40af;
}

.badge-success {
    background-color: #d1fae5;
    color: #065f46;
}

.badge-warning {
    background-color: #ffedd5;
    color: #9a3412;
}

.badge-danger {
    background-color: #fee2e2;
    color: #991b1b;
}

.badge-info {
    background-color: #cffafe;
    color: #155e75;
}

.badge-secondary {
    background-color: var(--gray-200);
    color: var(--gray-700);
}

.badge-lg {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* =====================================================
   ADMIN LAYOUT
   ===================================================== */
.admin-page {
    min-height: 100vh;
}

.admin-wrapper {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--gray-900);
    color: var(--gray-300);
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    z-index: 100;
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--gray-800);
}

.sidebar-header .logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--white);
    font-size: 1.125rem;
    font-weight: 700;
}

.sidebar-header .logo i {
    color: var(--primary-color);
    font-size: 1.5rem;
}

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

.sidebar-nav ul {
    padding: 0 0.75rem;
}

.sidebar-nav li {
    margin-bottom: 0.25rem;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: var(--gray-400);
    border-radius: var(--border-radius);
    transition: var(--transition-fast);
}

.sidebar-nav a:hover {
    background-color: var(--gray-800);
    color: var(--white);
}

.sidebar-nav li.active a {
    background-color: var(--primary-color);
    color: var(--white);
}

.sidebar-nav i {
    width: 20px;
    text-align: center;
}

.sidebar-footer {
    padding: 1rem 0.75rem;
    border-top: 1px solid var(--gray-800);
}

.sidebar-footer a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: var(--gray-400);
    border-radius: var(--border-radius);
}

.sidebar-footer a:hover {
    background-color: var(--gray-800);
    color: var(--white);
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
}

.admin-header {
    background-color: var(--white);
    padding: 1.25rem 2rem;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 50;
}

.admin-header h1 {
    font-size: 1.5rem;
    margin-bottom: 0;
    color: var(--gray-900);
}

.user-info {
    color: var(--gray-500);
    font-size: 0.875rem;
}

.content-section {
    padding: 2rem;
}

/* =====================================================
   DASHBOARD
   ===================================================== */
.dashboard-content {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
}

.stat-card {
    background-color: var(--white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--white);
}

.stat-icon.bg-primary { background-color: var(--primary-color); }
.stat-icon.bg-success { background-color: var(--success-color); }
.stat-icon.bg-warning { background-color: var(--warning-color); }
.stat-icon.bg-info { background-color: var(--info-color); }

.stat-info h3 {
    font-size: 1.75rem;
    margin-bottom: 0.25rem;
    color: var(--gray-900);
}

.stat-info p {
    color: var(--gray-500);
    font-size: 0.875rem;
    margin-bottom: 0;
}

/* Quick Actions */
.quick-actions {
    background-color: var(--white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.quick-actions h2 {
    font-size: 1.125rem;
    margin-bottom: 1rem;
}

.action-buttons {
    display: flex;
    gap: 1rem;
}

/* Section Header */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.25rem;
}

.section-header h2 {
    font-size: 1.125rem;
    margin-bottom: 0;
}

/* Data Table */
.table-responsive {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.data-table th,
.data-table td {
    padding: 1rem 1.25rem;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

.data-table th {
    background-color: var(--gray-50);
    font-weight: 600;
    color: var(--gray-700);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.data-table td.actions {
    display: flex;
    gap: 0.5rem;
}

.data-table .btn-sm {
    padding: 0.375rem;
}

/* Activity Timeline */
.activity-timeline {
    background-color: var(--white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.activity-item {
    display: flex;
    gap: 1rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--gray-100);
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-icon {
    width: 36px;
    height: 36px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: var(--border-radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    flex-shrink: 0;
}

.activity-content p {
    margin-bottom: 0.25rem;
    font-size: 0.875rem;
}

.activity-location {
    font-size: 0.75rem;
    color: var(--gray-500);
}

.activity-location i {
    color: var(--primary-color);
}

.activity-time {
    font-size: 0.75rem;
    color: var(--gray-400);
}

/* =====================================================
   SHIPMENTS PAGE
   ===================================================== */
.filters-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    gap: 1rem;
    flex-wrap: wrap;
}

.filter-form {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.filter-group .form-control {
    padding: 0.625rem 1rem;
    font-size: 0.875rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius);
    min-width: 180px;
}

.pagination-wrapper {
    margin-top: 1.5rem;
    display: flex;
    justify-content: center;
}

.pagination {
    display: flex;
    gap: 0.25rem;
    list-style: none;
}

.pagination a {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 0.75rem;
    background-color: var(--white);
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius);
    color: var(--gray-700);
    font-size: 0.875rem;
    font-weight: 500;
}

.pagination a:hover {
    background-color: var(--gray-100);
    border-color: var(--gray-400);
}

.pagination li.active a {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--white);
}

.pagination li.ellipsis {
    display: flex;
    align-items: center;
    padding: 0 0.5rem;
    color: var(--gray-500);
}

.results-info {
    text-align: center;
    margin-top: 1rem;
    font-size: 0.875rem;
    color: var(--gray-500);
}

/* =====================================================
   SHIPMENT FORM
   ===================================================== */
.shipment-form {
    background-color: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.form-sections {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.form-section {
    border-bottom: 1px solid var(--gray-200);
    padding-bottom: 2rem;
}

.form-section:last-of-type {
    border-bottom: none;
    padding-bottom: 0;
}

.form-section h3 {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
    color: var(--gray-800);
}

.form-section h3 i {
    color: var(--primary-color);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
    margin-bottom: 1.25rem;
}

.form-row:last-child {
    margin-bottom: 0;
}

.form-group {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--gray-700);
    font-size: 0.875rem;
}

.form-group .form-control {
    width: 100%;
    padding: 0.625rem 0.875rem;
    font-size: 0.875rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius);
    transition: var(--transition-fast);
}

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

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--gray-200);
}

/* Shipment Info Bar */
.shipment-info-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--white);
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-bottom: 1.5rem;
}

.tracking-number {
    font-size: 1.125rem;
}

.current-status {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* =====================================================
   SHIPMENT VIEW
   ===================================================== */
.action-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.action-buttons {
    display: flex;
    gap: 0.75rem;
}

.tracking-header {
    background-color: var(--white);
    padding: 1.5rem 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.tracking-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.tracking-info h2 {
    margin-bottom: 0;
}

.tracking-meta {
    text-align: right;
}

.tracking-meta p {
    margin-bottom: 0.25rem;
    font-size: 0.875rem;
    color: var(--gray-500);
}

.shipment-details-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.detail-card {
    background-color: var(--white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.detail-card.full-width {
    grid-column: 1 / -1;
}

.detail-card h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.detail-card h3 i {
    color: var(--primary-color);
}

.detail-content p {
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

/* Update Status Section */
.update-status-section {
    background-color: var(--white);
    padding: 1.5rem 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-bottom: 1.5rem;
}

.update-status-section h3 {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1rem;
    margin-bottom: 1.25rem;
}

.update-status-section h3 i {
    color: var(--primary-color);
}

.status-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr 2fr;
    gap: 1rem;
    margin-bottom: 0;
}

/* History Section */
.history-section {
    background-color: var(--white);
    padding: 1.5rem 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.history-section h3 {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1rem;
    margin-bottom: 1.5rem;
}

.history-section h3 i {
    color: var(--primary-color);
}

.timeline {
    position: relative;
}

.timeline-item {
    display: flex;
    gap: 1.5rem;
    padding: 1.25rem 0;
    border-bottom: 1px solid var(--gray-100);
}

.timeline-item:last-child {
    border-bottom: none;
}

.timeline-item.active .timeline-marker {
    background-color: var(--primary-color);
}

.timeline-marker {
    width: 12px;
    height: 12px;
    background-color: var(--gray-300);
    border-radius: var(--border-radius-full);
    margin-top: 0.375rem;
    flex-shrink: 0;
}

.timeline-content h4 {
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
}

.timeline-date {
    font-size: 0.75rem;
    color: var(--gray-400);
}

/* =====================================================
   RESPONSIVE DESIGN
   ===================================================== */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .shipment-details-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .status-form .form-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .login-box {
        padding: 1.5rem;
    }
    
    .admin-header {
        padding: 1rem 1.5rem;
    }
    
    .admin-header h1 {
        font-size: 1.25rem;
    }
    
    .user-info {
        display: none;
    }
    
    .content-section {
        padding: 1.5rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .filters-bar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-form {
        flex-direction: column;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .shipment-info-bar {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .tracking-header {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .tracking-info {
        flex-direction: column;
    }
    
    .tracking-meta {
        text-align: center;
    }
    
    .shipment-details-grid {
        grid-template-columns: 1fr;
    }
    
    .action-bar {
        flex-direction: column;
        gap: 1rem;
    }
    
    .form-actions {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .action-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .data-table {
        font-size: 0.75rem;
    }
    
    .data-table th,
    .data-table td {
        padding: 0.75rem;
    }
}

/* =====================================================
   PRINT STYLES
   ===================================================== */
@media print {
    .sidebar,
    .admin-header,
    .action-bar,
    .update-status-section,
    .form-actions {
        display: none !important;
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .content-section {
        padding: 0;
    }
    
    .detail-card,
    .history-section {
        break-inside: avoid;
    }
}