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

:root {
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --secondary: #ec4899;
    --bg-color: #f3f4f6;
    --card-bg: #ffffff;
    --text-main: #1f2937;
    --text-muted: #6b7280;
    --border-color: #e5e7eb;
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --success: #10b981;
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    background-image: 
        radial-gradient(at 0% 0%, hsla(253,16%,7%,0) 0, transparent 50%), 
        radial-gradient(at 50% 0%, hsla(225,39%,30%,0.05) 0, transparent 50%), 
        radial-gradient(at 100% 0%, hsla(339,49%,30%,0.05) 0, transparent 50%);
    background-attachment: fixed;
    margin: 0;
    padding: 0;
    color: var(--text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 20px;
    animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Glassmorphism Navbar */
.navbar {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    padding: 15px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar .logo a {
    color: var(--primary);
    font-size: 22px;
    font-weight: 700;
    text-decoration: none;
    letter-spacing: -0.5px;
}

.navbar .nav-links {
    display: flex;
    align-items: center;
    gap: 20px;
}

.navbar a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    transition: all 0.2s ease;
    padding: 8px 12px;
    border-radius: 6px;
}

.navbar a:hover {
    color: var(--primary);
    background: rgba(79, 70, 229, 0.05);
}

.navbar span {
    color: var(--text-main);
    font-weight: 600;
    font-size: 14px;
    padding: 8px 16px;
    background: #f3f4f6;
    border-radius: 20px;
}

/* Cards */
.card {
    background: var(--card-bg);
    border-radius: 16px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.025);
    padding: 30px;
    margin-bottom: 30px;
    border: 1px solid rgba(255, 255, 255, 0.8);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 10px 10px -5px rgba(0, 0, 0, 0.02);
}

h1, h2, h3 {
    margin-top: 0;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--text-main);
}

h2 {
    font-size: 24px;
    margin-bottom: 20px;
}

h3 {
    font-size: 18px;
    margin-bottom: 15px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    font-size: 14px;
    color: var(--text-muted);
}

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 15px;
    color: var(--text-main);
    background-color: #f9fafb;
    transition: all 0.2s ease;
    font-family: inherit;
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background-color: #fff;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    color: #fff;
    background: linear-gradient(135deg, var(--primary), #6366f1);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    transition: all 0.2s ease;
    box-shadow: 0 4px 6px rgba(79, 70, 229, 0.2);
}

.btn:hover {
    background: linear-gradient(135deg, var(--primary-hover), var(--primary));
    transform: translateY(-1px);
    box-shadow: 0 6px 12px rgba(79, 70, 229, 0.3);
}

.btn:active {
    transform: translateY(1px);
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger), #f87171);
    box-shadow: 0 4px 6px rgba(239, 68, 68, 0.2);
}

.btn-danger:hover {
    background: linear-gradient(135deg, var(--danger-hover), var(--danger));
    box-shadow: 0 6px 12px rgba(239, 68, 68, 0.3);
}

/* Tables */
table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin-top: 10px;
    border-radius: 8px;
    overflow: hidden;
}

th, td {
    padding: 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    background-color: #f8fafc;
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
}

tbody tr {
    transition: background-color 0.2s ease;
}

tbody tr:hover {
    background-color: #f8fafc;
}

tbody tr:last-child td {
    border-bottom: none;
}

/* Alerts */
.alert {
    padding: 12px 16px;
    margin-bottom: 20px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
}

.alert-error {
    background-color: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-success {
    background-color: #ecfdf5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

/* Categories List Styling */
ul {
    list-style-type: none;
    padding-left: 0;
}

ul ul {
    padding-left: 24px;
    margin-top: 8px;
    border-left: 2px solid var(--border-color);
    margin-left: 8px;
}

li {
    margin-bottom: 12px;
    padding: 8px 0;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
}

li strong {
    color: var(--primary);
    font-size: 16px;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 15px;
        padding: 15px 20px;
    }
    
    .card {
        padding: 20px;
    }
    
    table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }
}