:root {
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --secondary: #64748b;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --info: #0ea5e9;
    --dark: #0f172a;
    --light: #f8fafc;
    --border: #e2e8f0;
    --text: #334155;
    --sidebar-bg: #1e293b;
    --sidebar-text: #cbd5e1;
    --sidebar-hover: #334155;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', sans-serif;
    color: var(--text);
    background-color: #f1f5f9;
    line-height: 1.5;
}

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

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

/* Sidebar */
.sidebar {
    width: 260px;
    background-color: var(--sidebar-bg);
    color: var(--sidebar-text);
    display: flex;
    flex-direction: column;
    transition: var(--transition);
    position: fixed;
    height: 100vh;
    z-index: 1000;
}
.sidebar-header {
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.brand {
    color: white;
    font-size: 1.25rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}
.close-sidebar {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
}
.nav-links {
    list-style: none;
    padding: 20px 0;
    flex-grow: 1;
}
.nav-links li a {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 12px 20px;
    color: var(--sidebar-text);
    transition: var(--transition);
}
.nav-links li a:hover, .nav-links li a.active {
    background-color: var(--sidebar-hover);
    color: white;
    border-left: 4px solid var(--primary);
}
.logout-link {
    color: #fca5a5 !important;
}

/* Main Content */
.main-content {
    flex-grow: 1;
    margin-left: 260px;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: var(--transition);
}
.top-header {
    background-color: white;
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 100;
}
.header-left {
    display: flex;
    align-items: center;
    gap: 20px;
}
.menu-toggle {
    background: none;
    border: none;
    font-size: 1.2rem;
    color: var(--text);
    cursor: pointer;
    display: none;
}
.page-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--dark);
}
.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
}
.content-body {
    padding: 30px;
    flex-grow: 1;
}

/* Cards */
.card {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    margin-bottom: 20px;
    overflow: hidden;
}
.card-header {
    padding: 15px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.card-header h3 {
    margin: 0;
    font-size: 1.1rem;
    color: var(--dark);
    font-weight: 600;
}
.card-body {
    padding: 20px;
}
.card-footer {
    padding: 15px 20px;
    border-top: 1px solid var(--border);
    background-color: var(--light);
}

/* Dashboard Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}
.stat-card {
    background: white;
    border-radius: 8px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    transition: transform 0.2s;
}
.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}
.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}
.stat-details h3 {
    margin: 0;
    font-size: 1.8rem;
    color: var(--dark);
}
.stat-details p {
    margin: 0;
    color: var(--secondary);
    font-size: 0.9rem;
}

/* Forms */
.form-group {
    margin-bottom: 15px;
}
label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    font-size: 0.9rem;
}
.form-control {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-family: inherit;
    font-size: 0.95rem;
    transition: var(--transition);
}
.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}
.input-group {
    display: flex;
}
.input-group .form-control {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}
.input-group .btn {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 10px;
}
.checkbox-group label {
    margin-bottom: 0;
}

.section-title {
    margin: 30px 0 15px 0;
    font-size: 1.1rem;
    color: var(--dark);
    border-bottom: 2px solid var(--border);
    padding-bottom: 5px;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}
.grid-3 {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 20px;
}
.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
}
.span-2 { grid-column: span 2; }
.span-3 { grid-column: span 3; }
.align-end { align-items: end; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 16px;
    font-size: 0.9rem;
    font-weight: 500;
    text-align: center;
    border-radius: 4px;
    cursor: pointer;
    border: 1px solid transparent;
    transition: var(--transition);
    font-family: inherit;
}
.btn-sm {
    padding: 6px 10px;
    font-size: 0.8rem;
}
.btn-block {
    display: block;
    width: 100%;
}
.btn-primary {
    background-color: var(--primary);
    color: white;
}
.btn-primary:hover { background-color: var(--primary-dark); }
.btn-secondary {
    background-color: var(--secondary);
    color: white;
}
.btn-success { background-color: var(--success); color: white; }
.btn-danger { background-color: var(--danger); color: white; }
.btn-warning { background-color: var(--warning); color: white; }
.btn-info { background-color: var(--info); color: white; }
.btn-outline {
    background-color: transparent;
    border-color: var(--border);
    color: var(--text);
}
.btn-outline:hover {
    background-color: var(--light);
}

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

/* Tables */
.table {
    width: 100%;
    border-collapse: collapse;
}
.table th, .table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}
.table th {
    background-color: var(--light);
    font-weight: 600;
    color: var(--dark);
    font-size: 0.9rem;
}
.table tbody tr:hover {
    background-color: #f8fafc;
}
.table-profile th {
    width: 30%;
    background-color: #f8fafc;
    border-right: 1px solid var(--border);
}
.table-profile td, .table-profile th {
    border: 1px solid var(--border);
}

/* Badges */
.badge {
    padding: 4px 8px;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}
.badge-confirmed, .badge-active, .badge-success { background-color: #d1fae5; color: #065f46; }
.badge-pending, .badge-warning { background-color: #fef3c7; color: #92400e; }
.badge-danger { background-color: #fee2e2; color: #991b1b; }
.badge-info { background-color: #e0f2fe; color: #075985; }

/* Alerts */
.alert {
    padding: 12px 15px;
    border-radius: 4px;
    margin-bottom: 20px;
    border: 1px solid transparent;
}
.alert-success {
    background-color: #d1fae5;
    border-color: #a7f3d0;
    color: #065f46;
}
.alert-danger {
    background-color: #fee2e2;
    border-color: #fecaca;
    color: #991b1b;
}
.alert-warning {
    background-color: #fef3c7;
    border-color: #fde68a;
    color: #92400e;
}
.alert-info {
    background-color: #e0f2fe;
    border-color: #bae6fd;
    color: #075985;
}

/* Utils */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--secondary); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.mt-0 { margin-top: 0; }
.mt-2 { margin-top: 10px; }
.mt-3 { margin-top: 15px; }
.mt-4 { margin-top: 20px; }
.mb-4 { margin-bottom: 20px; }
.p-0 { padding: 0 !important; }
.float-right { float: right; }
.d-flex { display: flex; }
.gap-2 { gap: 10px; }
.w-100 { width: 100%; }

/* Progress List */
.progress-list {
    list-style: none;
    padding: 0;
}
.progress-list li {
    margin-bottom: 15px;
}
.progress-header {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    margin-bottom: 5px;
}
.progress-bar-container {
    height: 8px;
    background-color: var(--border);
    border-radius: 4px;
    overflow: hidden;
}
.progress-bar {
    height: 100%;
    background-color: var(--primary);
    border-radius: 4px;
}

/* Login */
.login-container {
    width: 100%;
    max-width: 400px;
    background: white;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}
.login-header {
    text-align: center;
    margin-bottom: 30px;
}

/* Responsive */
@media (max-width: 900px) {
    .grid-4, .grid-3 {
        grid-template-columns: 1fr 1fr;
    }
}
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .main-content {
        margin-left: 0;
    }
    .menu-toggle {
        display: block;
    }
    .close-sidebar {
        display: block;
    }
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }
}