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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

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

/* Header & Navigation */
header {
    background: linear-gradient(135deg, #000000 0%, #a0b1fc 100%);
    color: white;
    padding: 20px 0;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
}

header h1 {
    font-size: 28px;
    font-weight: 600;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
    margin-top: 15px;
}

nav a {
    color: white;
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 4px;
    transition: background-color 0.3s ease;
}

nav a:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

/* Typography */
h1 {
    font-size: 32px;
    margin-bottom: 20px;
    color: #667eea;
}

h2 {
    font-size: 24px;
    margin-bottom: 20px;
    color: #667eea;
    border-bottom: 2px solid #667eea;
    padding-bottom: 10px;
}

/* Forms */
form {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    margin-bottom: 20px;
}

input[type="text"],
input[type="email"],
input[type="number"],
input[type="date"],
textarea,
select {
    width: 100%;
    padding: 10px 12px;
    margin-bottom: 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.3s ease;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="number"]:focus,
input[type="date"]:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

textarea {
    resize: vertical;
    min-height: 120px;
}

/* Buttons */
button,
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-block;
    text-decoration: none;
}

button:primary,
.btn-primary {
    background-color: #667eea;
    color: white;
}

button:primary:hover,
.btn-primary:hover {
    background-color: #5568d3;
}

button:secondary,
.btn-secondary {
    background-color: #6c757d;
    color: white;
}

button:secondary:hover,
.btn-secondary:hover {
    background-color: #5a6268;
}

button:danger,
.btn-danger {
    background-color: #dc3545;
    color: white;
}

button:danger:hover,
.btn-danger:hover {
    background-color: #c82333;
}

button {
    background-color: #667eea;
    color: white;
}

button:hover {
    background-color: #5568d3;
}

button:disabled {
    background-color: #ccc;
    cursor: not-allowed;
    opacity: 0.6;
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    border-radius: 8px;
    overflow: hidden;
}

thead {
    background-color: #667eea;
    color: white;
}

th {
    padding: 15px;
    text-align: left;
    font-weight: 600;
}

td {
    padding: 12px 15px;
    border-bottom: 1px solid #eee;
}

tbody tr:hover {
    background-color: #f9f9f9;
}

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

/* Cards */
.card {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    padding: 20px;
    margin-bottom: 20px;
}

.card-header {
    border-bottom: 1px solid #eee;
    padding-bottom: 15px;
    margin-bottom: 15px;
}

.card-header h3 {
    margin: 0;
    color: #667eea;
}

/* Alerts */
.alert {
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 4px;
    border-left: 4px solid;
}

.alert-info {
    background-color: #e7f3ff;
    border-color: #2196F3;
    color: #0c5aa0;
}

.alert-success {
    background-color: #d4edda;
    border-color: #28a745;
    color: #155724;
}

.alert-warning {
    background-color: #fff3cd;
    border-color: #ffc107;
    color: #856404;
}

.alert-danger {
    background-color: #f8d7da;
    border-color: #dc3545;
    color: #721c24;
}

/* Utility Classes */
.row {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.col {
    flex: 1;
}

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

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

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}

.p-20 {
    padding: 20px;
}

/* AI Codes Display */
.ai-codes {
    background-color: #f0f4ff;
    padding: 15px;
    border-radius: 4px;
    border-left: 4px solid #667eea;
}

.ai-codes strong {
    display: block;
    margin-top: 10px;
    color: #667eea;
}

.ai-codes ul {
    margin-left: 20px;
    margin-top: 5px;
}

.ai-codes li {
    margin-bottom: 5px;
}

/* Links */
a {
    color: #667eea;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #5568d3;
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }

    nav ul {
        flex-direction: column;
        gap: 10px;
    }

    .row {
        flex-direction: column;
    }

    table {
        font-size: 12px;
    }

    th,
    td {
        padding: 10px;
    }

    h1 {
        font-size: 24px;
    }

    h2 {
        font-size: 20px;
    }
}