/* Certificate Verification Portal - Main Styles */

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

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

.verification-container {
    max-width: 600px;
    margin: 50px auto;
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.header {
    text-align: center;
    margin-bottom: 40px;
}

.header h1 {
    color: #4a5568;
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.header p {
    color: #718096;
    font-size: 1.1rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #4a5568;
}

.form-group input {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s;
}

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

.btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 12px 30px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: transform 0.2s, box-shadow 0.2s;
    width: 100%;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: #718096;
    margin-top: 10px;
}

.certificate-result {
    margin-top: 30px;
    padding: 25px;
    background: #f7fafc;
    border-radius: 12px;
    border-left: 4px solid #48bb78;
}

.certificate-result h3 {
    color: #2d3748;
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.certificate-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

.info-item {
    background: white;
    padding: 15px;
    border-radius: 8px;
    border-left: 3px solid #667eea;
}

.info-item strong {
    color: #4a5568;
    display: block;
    margin-bottom: 5px;
}

.download-section {
    text-align: center;
    margin-top: 20px;
}

.error {
    background: #fed7d7;
    color: #c53030;
    padding: 15px;
    border-radius: 8px;
    margin-top: 20px;
    border-left: 4px solid #e53e3e;
}

.success {
    background: #c6f6d5;
    color: #22543d;
    padding: 15px;
    border-radius: 8px;
    margin-top: 20px;
    border-left: 4px solid #38a169;
}

/* Admin Styles */
.admin-container {
    max-width: 400px;
    margin: 100px auto;
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.dashboard {
    background: white;
    min-height: 100vh;
}

.navbar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 15px 0;
    margin-bottom: 30px;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar h1 {
    font-size: 1.5rem;
}

.navbar a {
    color: white;
    text-decoration: none;
    padding: 8px 15px;
    border-radius: 5px;
    transition: background 0.3s;
}

.navbar a:hover {
    background: rgba(255,255,255,0.2);
}

.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.stat-card {
    background: white;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    text-align: center;
    border-top: 4px solid #667eea;
}

.stat-card h3 {
    font-size: 2rem;
    color: #667eea;
    margin-bottom: 10px;
}

.stat-card p {
    color: #718096;
    font-weight: 500;
}

.section {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    margin-bottom: 30px;
}

.section h2 {
    color: #4a5568;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #e2e8f0;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.table-container {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

th, td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
}

th {
    background: #f7fafc;
    font-weight: 600;
    color: #4a5568;
}

tr:hover {
    background: #f7fafc;
}

.btn-small {
    padding: 6px 12px;
    font-size: 14px;
    margin: 2px;
    width: auto;
}

.btn-danger {
    background: #e53e3e;
}

.btn-danger:hover {
    background: #c53030;
}

.btn-warning {
    background: #d69e2e;
}

.btn-warning:hover {
    background: #b7791f;
}

/* Responsive Design */
@media (max-width: 768px) {
    .verification-container,
    .admin-container {
        margin: 20px;
        padding: 20px;
    }
    
    .header h1 {
        font-size: 2rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .navbar .container {
        flex-direction: column;
        gap: 10px;
    }
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}