/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
    line-height: 1.6;
}

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

/* Card Design */
.card {
    background: white;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    padding: 30px;
    margin-bottom: 30px;
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
}

/* Navigation */
.navbar {
    background: white;
    border-radius: 16px;
    padding: 20px 30px;
    margin-bottom: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-size: 24px;
    font-weight: 700;
    color: #667eea;
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 20px;
}

.nav-link {
    color: #666;
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    background: #667eea;
    color: white;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.3s ease;
    font-size: 16px;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: #f8f9fa;
    color: #333;
    border: 1px solid #e0e0e0;
}

.btn-secondary:hover {
    background: #e9ecef;
}

.btn-small {
    padding: 8px 16px;
    font-size: 14px;
}

/* Forms */
.form-group {
    margin-bottom: 25px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #444;
}

.form-control {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

.form-control:focus {
    border-color: #667eea;
    outline: none;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

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

/* Alerts */
.alert {
    padding: 16px 20px;
    border-radius: 10px;
    margin-bottom: 25px;
    border: 1px solid transparent;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border-color: #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border-color: #f5c6cb;
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 25px;
    border-radius: 12px;
    text-align: center;
}

.stat-card h3 {
    font-size: 36px;
    margin-bottom: 10px;
}

/* Table */
.table-container {
    overflow-x: auto;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

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

thead {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

th, td {
    padding: 16px 20px;
    text-align: left;
    border-bottom: 1px solid #e0e0e0;
}

tbody tr:hover {
    background: #f8f9fa;
}

/* Login Page */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.login-card {
    width: 100%;
    max-width: 400px;
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.login-title {
    text-align: center;
    margin-bottom: 30px;
    color: #333;
}

/* Generator Page */
.generator-form {
    max-width: 800px;
    margin: 0 auto;
}

.preview-section {
    background: #f8f9fa;
    border-radius: 12px;
    padding: 25px;
    margin: 30px 0;
    border: 2px dashed #667eea;
}

/* Responsive */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 20px;
    }
    
    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .container {
        padding: 15px;
    }
    
    .card {
        padding: 20px;
    }
}