:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --bg-gradient-start: #f3f4f6;
    --bg-gradient-end: #e5e7eb;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.5);
    --text-color: #1f2937;
    --text-muted: #6b7280;
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: linear-gradient(135deg, var(--bg-gradient-start), var(--bg-gradient-end));
    min-height: 100vh;
    margin: 0;
    padding: 2rem;
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
}

.container {
    width: 100%;
    max-width: 800px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 1.5rem;
    box-shadow: var(--shadow);
    padding: 2.5rem;
    animation: fadeIn 0.5s ease-out;
}

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

h1, h2 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

h1 {
    text-align: center;
    font-size: 2.25rem;
    font-weight: 800;
}

h2 {
    font-size: 1.5rem;
    margin-top: 2rem;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 0.5rem;
    display: inline-block;
}

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

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

input[type="text"],
input[type="email"],
input[type="url"],
select,
textarea,
input[type="file"] {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    background-color: rgba(255, 255, 255, 0.8);
    transition: border-color 0.2s, box-shadow 0.2s;
    font-size: 1rem;
    box-sizing: border-box;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="url"]:focus,
select:focus,
textarea:focus,
input[type="file"]:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

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

.btn-submit {
    display: block;
    width: 100%;
    padding: 1rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 0.5rem;
    font-size: 1.125rem;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
    margin-top: 2rem;
}

.btn-submit:hover {
    background-color: var(--primary-hover);
}

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

.alert {
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.alert-success {
    background-color: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.alert-error {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

/* Admin Table Styles */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

th, td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid #e5e7eb;
}

th {
    background-color: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
}

tr:hover {
    background-color: rgba(255, 255, 255, 0.5);
}

.tag {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 700;
}

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