/**
 * LabManager - Premium CSS Styles
 * Converted from Tailwind CSS to vanilla CSS
 */

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

:root {
    /* Colors */
    --slate-50: #f8fafc;
    --slate-100: #f1f5f9;
    --slate-200: #e2e8f0;
    --slate-300: #cbd5e1;
    --slate-400: #94a3b8;
    --slate-500: #64748b;
    --slate-600: #475569;
    --slate-700: #334155;
    --slate-800: #1e293b;
    --slate-900: #0f172a;
    --slate-950: #020617;
    
    --blue-400: #60a5fa;
    --blue-500: #3b82f6;
    --blue-600: #2563eb;
    --blue-700: #1d4ed8;
    
    --emerald-400: #34d399;
    --emerald-500: #10b981;
    --emerald-600: #059669;
    
    --orange-400: #fb923c;
    --orange-500: #f97316;
    --orange-600: #ea580c;
    
    --red-400: #f87171;
    --red-500: #ef4444;
    --red-600: #dc2626;
    
    --yellow-400: #facc15;
    
    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    
    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--slate-950);
    color: var(--slate-50);
    line-height: 1.6;
}

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

.main-content {
    flex: 1;
    overflow-y: auto;
    background-color: var(--slate-900);
    margin: 0.5rem 0.5rem 0.5rem 0;
    border-radius: var(--radius-xl) 0 0 var(--radius-xl);
    border: 1px solid rgba(30, 41, 59, 0.5);
}

/* ==================== SIDEBAR ==================== */
.sidebar {
    width: 280px;
    background-color: var(--slate-950);
    padding: var(--spacing-6);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-8);
    border-right: 1px solid var(--slate-800);
}

.sidebar-logo {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(to right, var(--blue-400), var(--blue-600));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.05em;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-4);
    border-radius: var(--radius-md);
    color: var(--slate-400);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s;
}

.sidebar-nav a:hover {
    background-color: var(--slate-900);
    color: var(--slate-100);
}

.sidebar-nav a.active {
    background-color: var(--blue-600);
    color: white;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.sidebar-user {
    margin-top: auto;
    padding: var(--spacing-4);
    background-color: var(--slate-900);
    border-radius: var(--radius-lg);
    border: 1px solid var(--slate-800);
}

.sidebar-user-name {
    font-weight: 600;
    font-size: 0.875rem;
}

.sidebar-user-email {
    font-size: 0.75rem;
    color: var(--slate-500);
}

.btn-logout {
    margin-top: var(--spacing-3);
    width: 100%;
    padding: var(--spacing-2) var(--spacing-4);
    background-color: var(--red-600);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-logout:hover {
    background-color: var(--red-500);
}

/* ==================== CONTAINERS ==================== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-8);
}

.page-header {
    margin-bottom: var(--spacing-8);
}

.page-title {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.025em;
}

.page-subtitle {
    color: var(--slate-400);
    margin-top: var(--spacing-1);
}

/* ==================== CARDS ==================== */
.card {
    background-color: var(--slate-900);
    border: 1px solid var(--slate-800);
    border-radius: var(--radius-xl);
    padding: var(--spacing-6);
    transition: border-color 0.2s;
}

.card:hover {
    border-color: rgba(59, 130, 246, 0.5);
}

.stat-card {
    background-color: var(--slate-900);
    border: 1px solid var(--slate-800);
    padding: var(--spacing-6);
    border-radius: var(--radius-lg);
    transition: all 0.2s;
}

.stat-card:hover {
    border-color: rgba(59, 130, 246, 0.5);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-4);
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--slate-400);
    margin-top: var(--spacing-1);
}

/* ==================== BUTTONS ==================== */
.btn {
    padding: var(--spacing-3) var(--spacing-6);
    border-radius: var(--radius-lg);
    font-weight: 700;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    transition: all 0.2s;
    text-decoration: none;
}

.btn-primary {
    background-color: var(--blue-600);
    color: white;
    box-shadow: 0 8px 16px rgba(37, 99, 235, 0.2);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--blue-500);
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: scale(0.98);
}

.btn-success {
    background-color: var(--emerald-600);
    color: white;
    box-shadow: 0 8px 16px rgba(5, 150, 105, 0.2);
}

.btn-success:hover:not(:disabled) {
    background-color: var(--emerald-500);
}

.btn-danger {
    background-color: var(--red-600);
    color: white;
}

.btn-danger:hover:not(:disabled) {
    background-color: var(--red-500);
}

.btn-secondary {
    background-color: var(--slate-800);
    color: var(--slate-300);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--slate-700);
    color: white;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ==================== FORMS ==================== */
.form-group {
    margin-bottom: var(--spacing-4);
}

.form-label {
    display: block;
    font-size: 0.625rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--slate-500);
    margin-bottom: var(--spacing-2);
    margin-left: var(--spacing-1);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    background-color: var(--slate-950);
    border: 1px solid var(--slate-800);
    border-radius: var(--radius-lg);
    color: var(--slate-100);
    font-size: 0.875rem;
    transition: border-color 0.2s;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--blue-500);
}

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

/* ==================== TABLES ==================== */
.table-container {
    background-color: var(--slate-900);
    border: 1px solid var(--slate-800);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

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

.table thead {
    background-color: rgba(2, 6, 23, 0.3);
}

.table th {
    padding: var(--spacing-4) var(--spacing-6);
    text-align: left;
    font-size: 0.625rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--slate-500);
    border-bottom: 1px solid rgba(30, 41, 59, 0.5);
}

.table tbody tr {
    border-bottom: 1px solid rgba(30, 41, 59, 0.3);
    transition: background-color 0.2s;
}

.table tbody tr:hover {
    background-color: rgba(255, 255, 255, 0.02);
}

.table td {
    padding: var(--spacing-4) var(--spacing-6);
    color: var(--slate-300);
}

/* ==================== BADGES ==================== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-1);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.625rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-success {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--emerald-400);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.badge-warning {
    background-color: rgba(251, 146, 60, 0.1);
    color: var(--orange-400);
    border: 1px solid rgba(251, 146, 60, 0.2);
}

.badge-danger {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--red-400);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.badge-info {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--blue-400);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

/* ==================== MODALS ==================== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(2, 6, 23, 0.8);
    backdrop-filter: blur(8px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-4);
}

.modal {
    background-color: var(--slate-900);
    border: 1px solid var(--slate-800);
    border-radius: var(--radius-xl);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.modal-header {
    padding: var(--spacing-8);
    border-bottom: 1px solid var(--slate-800);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.modal-close {
    background: none;
    border: none;
    color: var(--slate-500);
    cursor: pointer;
    padding: var(--spacing-2);
    transition: color 0.2s;
}

.modal-close:hover {
    color: white;
}

.modal-body {
    padding: var(--spacing-8);
}

/* ==================== UTILITIES ==================== */
.hidden {
    display: none !important;
}

.grid {
    display: grid;
    gap: var(--spacing-6);
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

.flex {
    display: flex;
}

.flex-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.gap-2 {
    gap: var(--spacing-2);
}

.gap-4 {
    gap: var(--spacing-4);
}

.gap-6 {
    gap: var(--spacing-6);
}

.text-center {
    text-align: center;
}

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

.mt-4 {
    margin-top: var(--spacing-4);
}

.mb-4 {
    margin-bottom: var(--spacing-4);
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: -280px;
        top: 0;
        bottom: 0;
        z-index: 100;
        transition: left 0.3s;
    }
    
    .sidebar.open {
        left: 0;
    }
    
    .main-content {
        margin: 0;
        border-radius: 0;
    }
    
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .container {
        padding: var(--spacing-4);
    }
}

/* ==================== LOGIN PAGE ==================== */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--slate-950) 0%, var(--slate-900) 100%);
    padding: var(--spacing-4);
}

.login-card {
    background-color: var(--slate-900);
    border: 1px solid var(--slate-800);
    border-radius: var(--radius-xl);
    padding: var(--spacing-8);
    width: 100%;
    max-width: 400px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.login-logo {
    font-size: 2rem;
    font-weight: 800;
    background: linear-gradient(to right, var(--blue-400), var(--blue-600));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-align: center;
    margin-bottom: var(--spacing-8);
}

.error-message {
    background-color: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: var(--red-400);
    padding: var(--spacing-3) var(--spacing-4);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-4);
    font-size: 0.875rem;
}