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

:root {
    --primary: #3b82f6;
    --primary-foreground: #ffffff;
    --secondary: #64748b;
    --secondary-foreground: #ffffff;
    --muted: #f1f5f9;
    --muted-foreground: #64748b;
    --accent: #f1f5f9;
    --accent-foreground: #0f172a;
    --destructive: #ef4444;
    --destructive-foreground: #ffffff;
    --border: #e2e8f0;
    --input: #ffffff;
    --ring: #3b82f6;
    --background: #ffffff;
    --foreground: #0f172a;
    --card: #ffffff;
    --card-foreground: #0f172a;
    --popover: #ffffff;
    --popover-foreground: #0f172a;
    --sidebar: #f8fafc;
    --sidebar-foreground: #0f172a;
    --sidebar-accent: #e2e8f0;
    --sidebar-accent-foreground: #0f172a;
    --radius: 0.5rem;
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px 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);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--background);
    color: var(--foreground);
    line-height: 1.6;
}

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

/* Sidebar */
.sidebar {
    width: 280px;
    background-color: var(--sidebar);
    border-right: 1px solid var(--border);
    transition: width 0.3s ease;
    overflow: hidden;
}

.sidebar.collapsed {
    width: 60px;
}

.sidebar-content {
    padding: 1rem;
}

.sidebar-group {
    margin-bottom: 1.5rem;
}

.sidebar-group-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--sidebar-foreground);
    margin-bottom: 0.5rem;
    padding: 0.5rem 0;
}

.sidebar-menu {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.sidebar-menu-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--sidebar-foreground);
    transition: all 0.2s ease;
    font-size: 0.875rem;
}

.sidebar-menu-item:hover {
    background-color: var(--sidebar-accent);
    color: var(--sidebar-accent-foreground);
}

.sidebar-menu-item.active {
    background-color: var(--sidebar-accent);
    color: var(--sidebar-accent-foreground);
    font-weight: 500;
}

.sidebar-menu-item i {
    width: 1rem;
    text-align: center;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Header */
.header {
    height: 3rem;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--border);
    background-color: var(--background);
    padding: 0 1rem;
}

.sidebar-toggle {
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--foreground);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius);
    transition: background-color 0.2s ease;
}

.sidebar-toggle:hover {
    background-color: var(--accent);
}

/* Main Area */
.main-area {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
}

/* Pages */
.page {
    display: none;
}

.page.active {
    display: block;
}

.page-content {
    max-width: 1200px;
    margin: 0 auto;
}

/* Hero Section */
.hero-section {
    text-align: center;
    padding: 3rem 0;
    margin-bottom: 2rem;
}

.hero-icon {
    font-size: 4rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.hero-section h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--foreground);
}

.hero-section p {
    font-size: 1.25rem;
    color: var(--muted-foreground);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background-color: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
}

.stat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.stat-header h3 {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--muted-foreground);
}

.stat-header i {
    color: var(--muted-foreground);
    font-size: 1rem;
}

.stat-content .stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--foreground);
    margin-bottom: 0.25rem;
}

.stat-content p {
    font-size: 0.75rem;
    color: var(--muted-foreground);
}

/* Quick Actions */
.quick-actions-card {
    background-color: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
}

.quick-actions-card h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--foreground);
}

.quick-actions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1rem;
}

.quick-action-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.2s ease;
}

.quick-action-item:hover {
    background-color: var(--muted);
}

.quick-action-item i {
    font-size: 2rem;
    color: var(--primary);
}

.quick-action-item h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--foreground);
}

.quick-action-item p {
    font-size: 0.875rem;
    color: var(--muted-foreground);
}

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.page-header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--foreground);
}

/* Cards */
.card {
    background-color: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

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

.card-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--foreground);
}

.card-content {
    padding: 1.5rem;
}

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

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.table th {
    background-color: var(--muted);
    padding: 0.75rem;
    text-align: left;
    font-weight: 600;
    color: var(--foreground);
    border-bottom: 1px solid var(--border);
}

.table td {
    padding: 0.75rem;
    border-bottom: 1px solid var(--border);
    color: var(--foreground);
}

.table tbody tr:hover {
    background-color: var(--muted);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

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

.btn-primary:hover {
    background-color: #2563eb;
}

.btn-secondary {
    background-color: var(--secondary);
    color: var(--secondary-foreground);
}

.btn-secondary:hover {
    background-color: #475569;
}

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

.btn-outline:hover {
    background-color: var(--accent);
}

.btn-destructive {
    background-color: var(--destructive);
    color: var(--destructive-foreground);
}

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

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius);
    font-size: 0.75rem;
    font-weight: 500;
}

.badge-default {
    background-color: var(--primary);
    color: var(--primary-foreground);
}

.badge-secondary {
    background-color: var(--secondary);
    color: var(--secondary-foreground);
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.modal-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--foreground);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--muted-foreground);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: var(--radius);
    transition: background-color 0.2s ease;
}

.modal-close:hover {
    background-color: var(--accent);
}

/* Forms */
.modal-form {
    padding: 1.5rem;
}

.form-group {
    margin-bottom: 1rem;
}

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

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.875rem;
    background-color: var(--input);
    color: var(--foreground);
    transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--ring);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
}

.form-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 1.5rem;
}

.form-actions .btn {
    flex: 1;
}

/* Toast */
.toast-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 1001;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.toast {
    background-color: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
    box-shadow: var(--shadow-lg);
    min-width: 300px;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: slideIn 0.3s ease;
}

.toast.success {
    border-left: 4px solid #10b981;
}

.toast.error {
    border-left: 4px solid var(--destructive);
}

.toast-icon {
    font-size: 1.25rem;
}

.toast.success .toast-icon {
    color: #10b981;
}

.toast.error .toast-icon {
    color: var(--destructive);
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: 600;
    color: var(--foreground);
    margin-bottom: 0.25rem;
}

.toast-description {
    font-size: 0.875rem;
    color: var(--muted-foreground);
}

.toast-close {
    background: none;
    border: none;
    color: var(--muted-foreground);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: var(--radius);
    transition: background-color 0.2s ease;
}

.toast-close:hover {
    background-color: var(--accent);
}

/* Animations */
@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        height: 100vh;
        z-index: 100;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }

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

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

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

    .quick-actions-grid {
        grid-template-columns: 1fr;
    }

    .page-header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }

    .table-container {
        font-size: 0.75rem;
    }

    .modal-content {
        width: 95%;
        margin: 1rem;
    }
}

@media (max-width: 480px) {
    .main-area {
        padding: 1rem;
    }

    .hero-section {
        padding: 2rem 0;
    }

    .hero-section h1 {
        font-size: 2rem;
    }

    .hero-section p {
        font-size: 1rem;
    }

    .form-actions {
        flex-direction: column;
    }
}