/* ===== RESET & BASE 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-color: #f8f9fa;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== GREEN COLOR PALETTE ===== */
:root {
    --primary-green: #056405;
    --secondary-green: #0a8c08;
    --light-green: #e6f4e6;
    --accent-green: #4CAF50;
    --dark-green: #03310e;
    --text-dark: #333333;
    --text-light: #666666;
    --white: #ffffff;
    --light-gray: #f5f5f5;
    --border-color: #ddd;
    --success-color: #27ae60;
    --error-color: #e74c3c;
    --warning-color: #f39c12;
}

/* ===== HEADER STYLES ===== */
header {
    background: linear-gradient(135deg, var(--dark-green) 0%, var(--primary-green) 100%);
    color: var(--white);
    padding: 1.5rem 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.header-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.logo {
    height: 90px;
    width: auto;
    border-radius: 8px;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.2);
}

.org-name h1 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.tagline {
    font-size: 0.95rem;
    opacity: 0.9;
    font-style: italic;
}

.page-title {
    font-size: 1.5rem;
    font-weight: 600;
    padding: 0.8rem 2rem;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    margin-top: 0.5rem;
}

/* ===== MAIN CONTENT ===== */
main {
    padding: 2rem 0;
    min-height: calc(100vh - 280px);
}

.verification-container {
    background: var(--white);
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    margin-bottom: 2rem;
}

/* ===== VALID CERTIFICATE STYLES ===== */
.certificate-valid {
    padding: 2.5rem;
}

.valid-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.valid-header i {
    font-size: 2.5rem;
    color: var(--success-color);
}

.valid-header h2 {
    color: var(--success-color);
    font-size: 1.8rem;
}

.valid-message {
    color: var(--text-light);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.certificate-details-card {
    background-color: var(--light-green);
    border-left: 4px solid var(--primary-green);
    border-radius: 8px;
    padding: 1.8rem;
    margin-bottom: 2.5rem;
}

.certificate-details-card h3 {
    color: var(--primary-green);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
}

.detail-item {
    display: flex;
    flex-direction: column;
}

.detail-label {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.3rem;
    font-size: 0.95rem;
}

.detail-value {
    color: var(--text-light);
    font-size: 1.1rem;
}

.status-badge {
    display: inline-block;
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

.status-badge.verified {
    background-color: #d4edda;
    color: #155724;
}

.certificate-preview-section {
    margin-bottom: 2.5rem;
}

.certificate-preview-section h3 {
    color: var(--primary-green);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.preview-container {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 2rem;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
}

.image-container {
    padding: 1rem;
    text-align: center;
    background-color: var(--light-gray);
}

.certificate-image {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.1);
}

.verification-qr-section {
    text-align: center;
    padding: 1.5rem;
    background-color: var(--light-gray);
    border-radius: 8px;
}

.verification-qr-section h4 {
    color: var(--primary-green);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.qr-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.qr-image {
    width: 200px;
    height: 200px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px;
    background-color: var(--white);
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background-color: var(--primary-green);
    color: var(--white);
    padding: 0.8rem 1.8rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-download:hover {
    background-color: var(--secondary-green);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(5, 100, 5, 0.2);
}

.qr-note {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-top: 1rem;
}

.action-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 2.5rem;
}

.btn-secondary, .btn-print {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1.8rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-secondary {
    background-color: var(--light-gray);
    color: var(--text-dark);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: #e0e0e0;
}

.btn-print {
    background-color: var(--accent-green);
    color: var(--white);
}

.btn-print:hover {
    background-color: #3d8b40;
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(76, 175, 80, 0.2);
}

/* ===== INVALID CERTIFICATE STYLES ===== */
.certificate-invalid {
    padding: 2.5rem;
}

.invalid-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.invalid-header i {
    font-size: 2.5rem;
    color: var(--primary-green);
}

.invalid-header h2 {
    color: var(--primary-green);
    font-size: 1.8rem;
}

.invalid-message {
    color: var(--text-light);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.error-message {
    display: flex;
    align-items: center;
    gap: 1rem;
    background-color: #fde8e8;
    color: var(--error-color);
    padding: 1.2rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    border-left: 4px solid var(--error-color);
}

.error-message i {
    font-size: 1.5rem;
}

.verification-methods {
    margin-bottom: 3rem;
}

.qr-scanner-section, .manual-verify-section {
    padding: 2rem;
    background-color: var(--light-gray);
    border-radius: 8px;
    margin-bottom: 2rem;
}

.qr-scanner-section h3, .manual-verify-section h3 {
    color: var(--primary-green);
    margin-bottom: 0.8rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.section-description {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.scanner-container {
    display: flex;
    justify-content: center;
}

.qr-reader {
    width: 100%;
    max-width: 400px;
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.divider {
    display: flex;
    align-items: center;
    text-align: center;
    margin: 2rem 0;
}

.divider::before, .divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid var(--border-color);
}

.divider span {
    padding: 0 1rem;
    color: var(--text-light);
    font-weight: 600;
    background-color: var(--white);
}

.verify-form {
    margin-top: 1.5rem;
}

.input-group {
    display: flex;
    align-items: center;
    background-color: var(--white);
    border-radius: 50px;
    overflow: hidden;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.1);
    max-width: 600px;
    margin: 0 auto;
}

.input-icon {
    padding: 0 1.2rem;
    color: var(--primary-green);
    font-size: 1.2rem;
}

.verify-form input {
    flex: 1;
    padding: 1rem 0;
    border: none;
    outline: none;
    font-size: 1rem;
    background: transparent;
}

.btn-verify {
    background-color: var(--primary-green);
    color: var(--white);
    border: none;
    padding: 1rem 2rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-verify:hover {
    background-color: var(--secondary-green);
}

.form-note {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-top: 0.8rem;
    text-align: center;
}

.verification-info {
    background-color: var(--light-green);
    padding: 2rem;
    border-radius: 8px;
    border-left: 4px solid var(--primary-green);
}

.verification-info h3 {
    color: var(--primary-green);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 2rem;
}

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

.info-item i {
    font-size: 2.5rem;
    color: var(--primary-green);
    margin-bottom: 1rem;
}

.info-item h4 {
    color: var(--text-dark);
    margin-bottom: 0.8rem;
}

.info-item p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* ===== FOOTER STYLES ===== */
footer {
    background: linear-gradient(135deg, var(--dark-green) 0%, var(--primary-green) 100%);
    color: var(--white);
    padding: 2rem 0;
}

.footer-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 1.5rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.footer-logo-img {
    height: 50px;
    width: auto;
}

.footer-org h3 {
    font-size: 1.4rem;
    margin-bottom: 0.3rem;
}

.footer-org p {
    opacity: 0.8;
    font-size: 0.9rem;
}

.footer-info p {
    margin-bottom: 0.5rem;
}

.footer-contact {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 992px) {
    .header-container {
        padding: 0 1rem;
    }
    
    .logo-container {
        flex-direction: column;
        text-align: center;
    }
    
    .org-name h1 {
        font-size: 1.5rem;
    }
    
    .page-title {
        font-size: 1.3rem;
        padding: 0.7rem 1.5rem;
    }
    
    .details-grid {
        grid-template-columns: 1fr;
    }
    
    .info-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    main {
        padding: 1.5rem 0;
    }
    
    .certificate-valid, .certificate-invalid {
        padding: 1.5rem;
    }
    
    .valid-header h2, .invalid-header h2 {
        font-size: 1.5rem;
    }
    
    .qr-scanner-section, .manual-verify-section {
        padding: 1.5rem;
    }
    
    .input-group {
        flex-direction: column;
        border-radius: 8px;
    }
    
    .input-icon {
        padding: 1rem 0;
    }
    
    .verify-form input {
        padding: 1rem;
        width: 100%;
        text-align: center;
        border-bottom: 1px solid var(--border-color);
    }
    
    .btn-verify {
        width: 100%;
        justify-content: center;
        padding: 1rem;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .btn-secondary, .btn-print {
        width: 100%;
        justify-content: center;
    }
    
    .qr-image {
        width: 180px;
        height: 180px;
    }
}

@media (max-width: 576px) {
    .org-name h1 {
        font-size: 1.3rem;
    }
    
    .page-title {
        font-size: 1.1rem;
        padding: 0.6rem 1.2rem;
    }
    
    .certificate-details-card {
        padding: 1.2rem;
    }
    
    .verification-qr-section {
        padding: 1.2rem;
    }
    
    .qr-image {
        width: 150px;
        height: 150px;
    }
    
    .footer-logo {
        flex-direction: column;
        text-align: center;
    }
}