:root {
    --primary-orange: #ff6b35;
    --secondary-orange: #ff8c5a;
    --dark-orange: #e55a2b;
    --light-orange: #fff0eb;
    --text-dark: #2c3e50;
    --text-light: #7f8c8d;
    --white: #ffffff;
    --light-gray: #f8f9fa;
    --border-color: #e9ecef;
}

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

body {
    font-family: 'Roboto', 'Arial', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
}

/* Header Styles */
.navbar {
    background-color: var(--white) !important;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 1rem 0;
}

.navbar-brand img {
    height: 50px;
    width: auto;
}

.navbar-nav .nav-link {
    color: var(--text-dark) !important;
    font-weight: 500;
    margin: 0 15px;
    transition: color 0.3s ease;
}

.navbar-nav .nav-link:hover {
    color: var(--primary-orange) !important;
}

.btn-primary {
    background-color: var(--primary-orange);
    border-color: var(--primary-orange);
    border-radius: 25px;
    padding: 10px 25px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: var(--dark-orange);
    border-color: var(--dark-orange);
    transform: translateY(-2px);
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--light-orange) 0%, var(--white) 100%);
    padding: 100px 0;
    min-height: 80vh;
    display: flex;
    align-items: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-content h1 .highlight {
    color: var(--primary-orange);
}

.hero-content p {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    max-width: 600px;
}

.btn-outline-primary {
    border-color: var(--primary-orange);
    color: var(--primary-orange);
    border-radius: 25px;
    padding: 10px 25px;
    font-weight: 600;
    margin-left: 15px;
    transition: all 0.3s ease;
}

.btn-outline-primary:hover {
    background-color: var(--primary-orange);
    border-color: var(--primary-orange);
    color: var(--white);
    transform: translateY(-2px);
}

/* Services Section */
.services-section {
    padding: 80px 0;
    background-color: var(--light-gray);
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.section-title p {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

.service-card {
    background: var(--white);
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    border: none;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    height: 100%;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-orange), var(--secondary-orange));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    color: var(--white);
}

.service-card h4 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.service-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* Certificate Categories */
.categories-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    position: relative;
}

.categories-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent 0%, var(--primary-orange) 50%, transparent 100%);
}

.categories-section .section-title h2 {
    position: relative;
    display: inline-block;
}

.categories-section .section-title h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-orange), var(--secondary-orange));
    border-radius: 2px;
}

.category-card {
    background: var(--white);
    border: none;
    border-radius: 15px;
    padding: 2rem;
    margin-bottom: 2rem;
    transition: all 0.3s ease;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-orange), var(--secondary-orange));
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(255, 107, 53, 0.15);
}

.category-title {
    color: var(--text-dark);
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    position: relative;
}

.category-title i {
    background: linear-gradient(135deg, var(--primary-orange), var(--secondary-orange));
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    font-size: 1.2rem;
    box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
}

.certificate-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.certificate-list li {
    padding: 1rem 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
    position: relative;
}

.certificate-list li:hover {
    background: rgba(255, 107, 53, 0.03);
    padding-left: 1rem;
    border-radius: 8px;
}

.certificate-list li:last-child {
    border-bottom: none;
}

.certificate-link {
    color: var(--text-dark);
    text-decoration: none;
    flex-grow: 1;
    transition: all 0.3s ease;
    font-weight: 500;
    position: relative;
}

.certificate-link:hover {
    color: var(--primary-orange);
    text-decoration: none;
    transform: translateX(5px);
}

.certificate-link.text-primary {
    color: var(--primary-orange) !important;
    font-weight: 600;
    font-size: 0.95rem;
}

.certificate-link.text-primary:hover {
    transform: translateX(10px);
}

.certificate-code {
    background: linear-gradient(135deg, var(--light-orange), rgba(255, 107, 53, 0.1));
    color: var(--primary-orange);
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    border: 1px solid rgba(255, 107, 53, 0.2);
    margin-left: 1rem;
    transition: all 0.3s ease;
}

/* Responsive Design for Certificate Categories */
@media (max-width: 768px) {
    .categories-section {
        padding: 60px 0;
    }
    
    .category-card {
        padding: 1.5rem;
        margin-bottom: 1.5rem;
    }
    
    .category-title {
        font-size: 1.2rem;
        margin-bottom: 1rem;
    }
    
    .category-title i {
        width: 40px;
        height: 40px;
        font-size: 1rem;
        margin-right: 10px;
    }
    
    .certificate-list li {
        padding: 0.75rem 0;
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .certificate-code {
        margin-left: 0;
        align-self: flex-end;
    }
}

/* Animation for certificate cards */
.category-card {
    animation: fadeInUp 0.6s ease-out;
}

.category-card:nth-child(1) { animation-delay: 0.1s; }
.category-card:nth-child(2) { animation-delay: 0.2s; }
.category-card:nth-child(3) { animation-delay: 0.3s; }
.category-card:nth-child(4) { animation-delay: 0.4s; }

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Stats Section */
.stats-section {
    background: linear-gradient(135deg, var(--primary-orange), var(--secondary-orange));
    color: var(--white);
    padding: 60px 0;
}

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

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    display: block;
}

.stat-label {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Footer */
.footer {
    background-color: var(--text-dark);
    color: var(--white);
    padding: 50px 0 30px;
}

.footer h5 {
    color: var(--primary-orange);
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.footer ul {
    list-style: none;
}

.footer ul li {
    margin-bottom: 0.5rem;
}

.footer ul li a {
    color: #bdc3c7;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer ul li a:hover {
    color: var(--primary-orange);
    text-decoration: none;
}

.footer-bottom {
    border-top: 1px solid #34495e;
    padding-top: 20px;
    margin-top: 30px;
    text-align: center;
    color: #bdc3c7;
}

/* Certificate Page Styles */
.certificate-header {
    background: linear-gradient(135deg, var(--light-orange) 0%, var(--white) 100%);
    padding: 60px 0;
}

.certificate-details {
    background: var(--white);
    border-radius: 10px;
    padding: 2rem;
    margin: -30px auto 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    max-width: 800px;
}

.badge-custom {
    background-color: var(--primary-orange);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

/* Validation Form */
.validation-form {
    background: var(--light-gray);
    padding: 2rem;
    border-radius: 10px;
    margin: 2rem 0;
}

.form-control:focus {
    border-color: var(--primary-orange);
    box-shadow: 0 0 0 0.2rem rgba(255, 107, 53, 0.25);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .service-card {
        margin-bottom: 2rem;
    }
    
    .navbar-collapse {
        background-color: var(--white);
        padding: 1rem;
        margin-top: 1rem;
        border-radius: 10px;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    }
}

/* Loading Animation */
.loading {
    display: none;
    text-align: center;
    padding: 2rem;
}

.spinner-border-orange {
    color: var(--primary-orange);
}

/* Success/Error Messages */
.alert-success {
    background-color: #d4edda;
    border-color: #c3e6cb;
    color: #155724;
}

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

/* Smooth Animations */
.fade-in {
    animation: fadeIn 0.6s ease-in;
}

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

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: var(--primary-orange);
    color: var(--white);
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    z-index: 1000;
}

.back-to-top:hover {
    background-color: var(--dark-orange);
    transform: translateY(-3px);
}

/* Certificate selection buttons */
.get-certificate-btn {
    background: none;
    border: none;
    padding: 0;
    text-align: left;
    color: var(--text-dark);
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    font-family: inherit;
    font-size: inherit;
    font-weight: 500;
    position: relative;
    width: 100%;
}

.get-certificate-btn:hover {
    color: var(--primary-orange);
    text-decoration: none;
    transform: translateX(5px);
}

.get-certificate-btn:focus {
    outline: 2px solid var(--primary-orange);
    outline-offset: 2px;
    border-radius: 4px;
}

.get-certificate-btn:active {
    transform: translateX(3px);
}

/* Add a subtle icon indicator for clickable certificates */
.get-certificate-btn::before {
    content: '\f0da';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    margin-right: 8px;
    opacity: 0;
    transition: all 0.3s ease;
    color: var(--primary-orange);
    font-size: 0.8em;
}

.get-certificate-btn:hover::before {
    opacity: 1;
    transform: translateX(3px);
}

/* Required field indicator */
.form-label span {
    color: var(--primary-orange);
    font-weight: bold;
}