:root {
    --primary-color: #2563eb;
    --secondary-color: #3b82f6;
    --accent-color: #f59e0b;
    --text-color: #1f2937;
    --light-bg: #f3f4f6;
    --card-bg: #ffffff;
    --gradient-primary: linear-gradient(135deg, #2563eb, #3b82f6);
    --gradient-accent: linear-gradient(135deg, #f59e0b, #f97316);
    --gradient-success: linear-gradient(135deg, #10b981, #34d399);
    --gradient-trust: linear-gradient(135deg, #3b82f6, #60a5fa);
    --section-bg: #f3f4f6;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --border-radius: 10px;
    --box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    --primary-dark: #1d4ed8;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

body {
    background: var(--section-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Navbar Styles */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all 0.3s ease;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    position: relative;
}

.logo::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

.logo:hover::after {
    width: 100%;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
    margin-left: auto;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.nav-links a:hover::after {
    width: 100%;
}

.hamburger {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Main Content */
.main-content {
    padding-top: 80px;
    flex: 1;
}

/* Registration Form */
.registration-section {
    padding: 4rem 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.registration-container {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 3rem;
    box-shadow: var(--shadow-lg);
}

.registration-header {
    text-align: center;
    margin-bottom: 3rem;
}

.registration-header h1 {
    color: var(--primary-color);
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.registration-header p {
    color: var(--text-color);
    font-size: 1.1rem;
}

.registration-form {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    padding: 2rem;
    background: var(--light-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    display: block;
    margin-bottom: 0.75rem;
    color: var(--text-color);
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid #e5e7eb;
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: all 0.3s ease;
    background: white;
    color: var(--text-color);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.course-details-group {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: white;
    border-radius: var(--border-radius);
    border: 1px solid #e5e7eb;
    box-shadow: var(--box-shadow);
}

.course-details-group h3 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-size: 1.25rem;
    font-weight: 600;
}

.course-info {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-top: 1rem;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: white;
    border-radius: var(--border-radius);
    border: 1px solid #e5e7eb;
    flex: 1 1 30%;
    min-width: 200px;
    max-width: 300px;
    box-shadow: var(--box-shadow);
}

.info-item i {
    color: var(--primary-color);
    font-size: 1.2rem;
}

.info-item span {
    color: #374151;
    font-weight: 500;
    font-size: 1rem;
}

.submit-btn {
    grid-column: 1 / -1;
    width: 100%;
    padding: 1rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 1.5rem;
}

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

/* Mobile Responsive Styles */
@media (max-width: 767px) {
    .navbar {
        padding: 1rem;
        justify-content: space-between;
    }

    .logo {
        font-size: 1.2rem;
    }

    .hamburger {
        display: block;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: white;
        flex-direction: column;
        padding: 1rem;
        box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links a {
        padding: 1rem;
        width: 100%;
        text-align: center;
    }

    .registration-section {
        padding: 2rem 1rem;
    }

    .registration-container {
        padding: 2rem;
    }

    .registration-header h1 {
        font-size: 2rem;
    }

    .registration-form {
        grid-template-columns: 1fr;
        padding: 1.5rem;
    }

    .form-group {
        width: 100%;
    }

    .form-group label {
        font-size: 0.9rem;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 0.8rem;
        font-size: 0.9rem;
    }

    .course-details-group {
        padding: 1rem;
    }

    .course-info {
        display: grid;
        grid-template-columns: 1fr;
        gap: 1rem;
        margin-bottom: 1rem;
    }

    .info-item {
        display: flex;
        align-items: center;
        gap: 0.5rem;
    }

    .info-item i {
        font-size: 1.2rem;
    }

    .info-item span {
        font-size: 0.9rem;
    }
}

/* Tablet Responsive Styles */
@media (min-width: 768px) and (max-width: 1024px) {
    .registration-section {
        padding: 3rem 1.5rem;
    }

    .registration-container {
        padding: 2.5rem;
    }

    .registration-header h1 {
        font-size: 2.2rem;
    }

    .registration-form {
        padding: 1.5rem;
    }

    .course-info {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Desktop Styles */
@media (min-width: 1024px) {
    .registration-section {
        padding: 4rem 2rem;
    }

    .registration-container {
        padding: 3rem;
    }

    .registration-header h1 {
        font-size: 2.5rem;
    }

    .registration-form {
        padding: 2rem;
    }

    .course-info {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Footer */
footer {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 3rem 0;
    position: relative;
    overflow: hidden;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    position: relative;
    z-index: 1;
}

.footer-section {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.footer-section h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: white;
    position: relative;
    padding-bottom: 0.5rem;
}

.footer-section h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 3px;
    background: var(--accent-color);
    border-radius: 3px;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.6;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
    padding-left: 1.5rem;
}

.footer-links a::before {
    content: '→';
    position: absolute;
    left: 0;
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.3s ease;
}

.footer-links a:hover {
    color: white;
    transform: translateX(5px);
}

.footer-links a:hover::before {
    opacity: 1;
    transform: translateX(0);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    margin-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.8);
}

.footer-bottom p {
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-section h3 {
        font-size: 1.3rem;
    }

    .footer-links a {
        padding-left: 1rem;
    }
}