:root {
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --secondary-color: #ec4899;
    --bg-color: #f3f4f6;
    --card-bg: rgba(255, 255, 255, 0.95);
    --text-color: #1f2937;
    --text-light: #6b7280;
    --border-radius: 16px;
    --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

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

body {
    font-family: var(--font-family);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--text-color);
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 500px;
    background: var(--card-bg);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
    animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

h1 {
    text-align: center;
    margin-bottom: 1.5rem;
    font-weight: 800;
    color: #111827;
    font-size: 2rem;
    background: linear-gradient(to right, #4f46e5, #ec4899);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-color);
}

input, select, textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: #f9fafb;
    font-family: inherit;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
    background: #fff;
}

.btn {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.btn:active {
    transform: translateY(0);
}

.toggle-group {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    background: #f3f4f6;
    padding: 0.5rem;
    border-radius: 12px;
}

.toggle-option {
    flex: 1;
    text-align: center;
    padding: 0.75rem;
    cursor: pointer;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s;
    color: var(--text-light);
}

.toggle-option.active {
    background: white;
    color: var(--primary-color);
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.hidden {
    display: none;
    animation: slideUp 0.3s ease-out;
}

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

/* Admin Styles */
body.admin-body {
    background: #f3f4f6;
    display: block;
    padding: 0;
}

.admin-nav {
    background: white;
    padding: 1rem 2rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.admin-nav h2 {
    font-size: 1.5rem;
    font-weight: 700;
}

.admin-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.card {
    background: white;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
}

.card h3 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
    color: #111827;
}

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

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #e5e7eb;
}

th {
    font-weight: 600;
    color: var(--text-light);
    background: #f9fafb;
}

.badge {
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 500;
}

.badge-success { background: #d1fae5; color: #065f46; }
.badge-warning { background: #fef3c7; color: #92400e; }
.badge-danger { background: #fee2e2; color: #991b1b; }

.action-btn {
    padding: 0.5rem 1rem;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    font-size: 0.875rem;
    background: #ef4444;
    color: white;
}