/* SM — Modern Vanilla CSS Design System */

:root {
    --primary: #4F46E5;
    --primary-hover: #4338CA;
    --primary-light: #EEF2FF;
    --secondary: #64748B;
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    --info: #3B82F6;
    
    --bg-main: #F8FAFC;
    --bg-card: #FFFFFF;
    --bg-sidebar: #0F172A;
    --bg-sidebar-active: #1E293B;
    
    --text-main: #0F172A;
    --text-muted: #64748B;
    --text-white: #FFFFFF;
    
    --border-color: #E2E8F0;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    
    --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);
    
    --font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.5;
    font-size: 14px;
    display: flex;
    min-height: 100vh;
}

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

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

/* Sidebar */
.sidebar {
    width: 260px;
    background-color: var(--bg-sidebar);
    color: var(--text-white);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.sidebar-header {
    padding: 24px 20px;
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 0.5px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-header i {
    color: var(--primary);
}

.sidebar-nav {
    padding: 20px 12px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: #94A3B8;
    border-radius: var(--radius-sm);
    font-weight: 500;
    transition: all 0.2s ease;
}

.nav-item:hover {
    color: var(--text-white);
    background-color: rgba(255, 255, 255, 0.05);
    text-decoration: none;
}

.nav-item.active {
    color: var(--text-white);
    background-color: var(--primary);
}

.nav-item i {
    width: 20px;
    text-align: center;
    font-size: 16px;
}

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

.topbar {
    background-color: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

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

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.content-body {
    padding: 32px;
    flex: 1;
}

/* Cards */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    padding: 24px;
    margin-bottom: 24px;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 14px;
    border: none;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
}
.btn-primary:hover {
    background-color: var(--primary-hover);
    text-decoration: none;
}

.btn-secondary {
    background-color: var(--bg-main);
    color: var(--text-main);
    border: 1px solid var(--border-color);
}
.btn-secondary:hover {
    background-color: var(--border-color);
    text-decoration: none;
}

.btn-danger {
    background-color: var(--danger);
    color: white;
}
.btn-danger:hover {
    background-color: #DC2626;
}

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

/* Form Controls */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--text-main);
}

.form-control {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
}

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

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

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

.table th {
    background-color: var(--bg-main);
    font-weight: 600;
    color: var(--text-muted);
}

/* Status Badges */
.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.badge-success { background: #D1FAE5; color: #065F46; }
.badge-warning { background: #FEF3C7; color: #92400E; }
.badge-danger  { background: #FEE2E2; color: #991B1B; }
.badge-info    { background: #DBEAFE; color: #1E40AF; }
.badge-secondary{ background: #E2E8F0; color: #475569; }

/* Alert Messages */
.alert {
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
    font-weight: 500;
}
.alert-success { background: #D1FAE5; color: #065F46; border: 1px solid #A7F3D0; }
.alert-error   { background: #FEE2E2; color: #991B1B; border: 1px solid #FCA5A5; }

/* Login Page Styling */
.auth-container {
    width: 100%;
    max-width: 400px;
    margin: 80px auto;
    padding: 20px;
}