@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --accent: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    --bg-main: #f8fafc;
    --bg-card: #ffffff;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
    --glass: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    display: flex;
    min-height: 100vh;
}

/* Sidebar Styling - World-Class Update v2.0 */
.sidebar {
    width: 280px;
    background: #0f172a;
    color: white;
    padding: 30px 0;
    height: 100vh;
    position: sticky;
    left: 0;
    top: 0;
    z-index: 100;
    overflow-y: auto !important;
    overflow-x: hidden;
    padding-bottom: 40px;
    display: flex;
    flex-direction: column;
}

/* Elite Scrollbar Tool */
.sidebar::-webkit-scrollbar {
    width: 6px;
}

.sidebar::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 10px;
}

.sidebar:hover::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.3);
}

.brand {
    padding: 0 30px 40px;
    font-size: 1.5rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand i {
    color: #3b82f6;
    font-size: 1.8rem;
}

.nav-links {
    list-style: none;
    padding: 0 15px;
    flex: 1;
}

.nav-links li {
    margin-bottom: 5px;
}

.nav-links a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 18px;
    color: #94a3b8;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

.nav-links a i {
    width: 20px;
    text-align: center;
    font-size: 1.1rem;
}

.nav-links a:hover {
    background: rgba(255, 255, 255, 0.03);
    color: white;
}

.nav-links a.active {
    background: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
}

/* Main Content Wrapper */
.main-content {
    flex: 1;
    padding: 40px 60px;
    min-width: 0;
}

header {
    margin-bottom: 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    font-size: 2rem;
    font-weight: 900;
    letter-spacing: -0.025em;
    color: #0f172a;
}

/* Premium Layout Utilities */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    border-radius: 20px;
    padding: 25px;
    border: 1px solid #f1f5f9;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    margin-bottom: 15px;
}

/* Breadcrumb Elite */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.8rem;
    color: #64748b;
    margin-bottom: 25px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

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

/* Button Refinement */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    border-radius: 12px;
    font-weight: 700;
    font-size: 0.9rem;
    cursor: pointer;
    transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.2);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(79, 70, 229, 0.3);
}

/* Form Styling Professional */
.form-group {
    margin-bottom: 25px;
}

label {
    display: block;
    margin-bottom: 10px;
    font-weight: 700;
    font-size: 0.85rem;
    color: #475569;
}

.form-control {
    width: 100%;
    padding: 14px 18px;
    border-radius: 14px;
    border: 1px solid #e2e8f0;
    background: white;
    font-size: 0.95rem;
    transition: 0.23s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 5px rgba(79, 70, 229, 0.08);
}

/* Glassmorphism Classes */
.glass {
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.gradient-text {
    background: linear-gradient(135deg, #4f46e5 0%, #10b981 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Animation Utilities */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade {
    animation: fadeIn 0.4s ease forwards;
}

/* Status Badges */
.status-pill {
    padding: 5px 12px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 0.05em;
}

.status-success {
    background: #dcfce7;
    color: #166534;
}

.status-danger {
    background: #fef2f2;
    color: #b91c1c;
}