/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: #6366f1;
}

.nav-logo i {
    margin-right: 10px;
    font-size: 1.8rem;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #6366f1;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background: #6366f1;
    transition: width 0.3s ease;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    padding-top: 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 100" fill="rgba(255,255,255,0.1)"><polygon points="1000,100 0,100 0,0 1000,20"/></svg>');
    background-size: cover;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    color: white;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.highlight {
    background: linear-gradient(45deg, #ffd700, #ffed4e);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.btn {
    padding: 15px 30px;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(45deg, #ff6b6b, #ee5a24);
    color: white;
    box-shadow: 0 10px 30px rgba(255, 107, 107, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(255, 107, 107, 0.6);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: #667eea;
    transform: translateY(-3px);
}

.btn-access {
    background: linear-gradient(45deg, #4ecdc4, #44a08d);
    color: white;
    font-size: 1.1rem;
    padding: 18px 40px;
    box-shadow: 0 10px 30px rgba(78, 205, 196, 0.4);
}

.btn-access:hover:not(:disabled) {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(78, 205, 196, 0.6);
}

.btn-access:disabled {
    background: #ccc;
    cursor: not-allowed;
    box-shadow: none;
}

/* Floating Cards Animation */
.hero-image {
    position: relative;
    height: 400px;
}

.floating-cards {
    position: relative;
    height: 100%;
}

.card {
    position: absolute;
    background: white;
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    gap: 15px;
    animation: float 6s ease-in-out infinite;
    backdrop-filter: blur(10px);
}

.card i {
    font-size: 2rem;
    color: #6366f1;
}

.card span {
    font-weight: 600;
    color: #333;
}

.card-1 {
    top: 20%;
    right: 10%;
    animation-delay: 0s;
}

.card-2 {
    top: 50%;
    left: 0%;
    animation-delay: 2s;
}

.card-3 {
    bottom: 20%;
    right: 20%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

/* Selection Section */
.selection-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.1rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

.selection-container {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    border-radius: 20px;
    padding: 3rem;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

.selection-step {
    margin-bottom: 3rem;
}

.step-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.step-number {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(45deg, #6366f1, #8b5cf6);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.step-header h3 {
    font-size: 1.3rem;
    color: #333;
}

.dropdown-container {
    position: relative;
    background: white;
    border-radius: 12px;
    overflow: visible;
}

.custom-select {
    width: 100%;
    padding: 15px 50px 15px 20px;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 500;
    background: white;
    color: #333;
    cursor: pointer;
    transition: all 0.3s ease;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: none;
    position: relative;
    z-index: 1;
    line-height: 1.5;
}

/* Specific styling for different browsers */
.custom-select::-ms-expand {
    display: none;
}

.custom-select:focus {
    outline: none;
    border-color: #6366f1;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.custom-select option {
    padding: 12px 15px;
    background: white;
    color: #333;
    font-size: 1rem;
    border: none;
}

.custom-select option:hover {
    background: #f8fafc;
}

.custom-select option:checked,
.custom-select option:selected {
    background: #6366f1;
    color: white;
}

.dropdown-arrow {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #666;
    pointer-events: none;
    font-size: 1rem;
    z-index: 2;
    transition: transform 0.3s ease;
}

.dropdown-container:hover .dropdown-arrow {
    color: #6366f1;
}

.custom-select:focus + .dropdown-arrow {
    color: #6366f1;
    transform: translateY(-50%) rotate(180deg);
}

.year-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
}

.year-card {
    background: white;
    border: 2px solid #e2e8f0;
    border-radius: 15px;
    padding: 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.year-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.1), transparent);
    transition: left 0.5s ease;
}

.year-card:hover::before {
    left: 100%;
}

.year-card:hover {
    border-color: #6366f1;
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(99, 102, 241, 0.2);
}

.year-card.selected {
    border-color: #6366f1;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: white;
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(99, 102, 241, 0.4);
}

/* Semester Selection Styles */
.semester-selection-step {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    max-height: 0;
    margin-top: 0;
}

.semester-selection-step.visible {
    opacity: 1;
    transform: translateY(0);
    max-height: 300px;
    margin-top: 3rem;
}

.semester-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

@media (max-width: 768px) {
    .semester-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.semester-card {
    background: white;
    border: 2px solid #e2e8f0;
    border-radius: 15px;
    padding: 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.semester-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.1), transparent);
    transition: left 0.5s ease;
}

.semester-card:hover::before {
    left: 100%;
}

.semester-card:hover {
    border-color: #6366f1;
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(99, 102, 241, 0.2);
}

.semester-card.selected {
    border-color: #6366f1;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: white;
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(99, 102, 241, 0.4);
}

.semester-card span {
    display: block;
    font-weight: 600;
    font-size: 1.1rem;
}

.semester-card small {
    display: block;
    opacity: 0.8;
    font-size: 0.85rem;
    margin-top: 5px;
}

/* PYQ Card Special Styling */
.pyq-card {
    background: linear-gradient(135deg, #f59e0b, #f97316) !important;
    color: white !important;
    border-color: #f59e0b !important;
}

.pyq-card:hover {
    background: linear-gradient(135deg, #d97706, #ea580c) !important;
    border-color: #d97706 !important;
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(245, 158, 11, 0.4) !important;
}

.pyq-card.selected {
    background: linear-gradient(135deg, #d97706, #ea580c) !important;
    border-color: #d97706 !important;
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(245, 158, 11, 0.6) !important;
}

.pyq-card small {
    opacity: 0.9;
}

.year-card span {
    display: block;
    font-weight: 600;
    font-size: 1.1rem;
}

.year-card small {
    opacity: 0.8;
    font-size: 0.9rem;
}

.access-button-container {
    text-align: center;
    margin-top: 3rem;
}

/* Features Section */
.features-section {
    padding: 100px 0;
    background: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #f1f5f9;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.feature-icon i {
    font-size: 2rem;
    color: white;
}

.feature-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #333;
}

.feature-card p {
    color: #666;
    line-height: 1.6;
}

/* About Section */
.about-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    opacity: 0.9;
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.stat {
    text-align: center;
}

.stat h3 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stat p {
    font-size: 1rem;
    opacity: 0.8;
}

.about-illustration {
    width: 200px;
    height: 200px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    backdrop-filter: blur(10px);
}

.about-illustration i {
    font-size: 4rem;
}

/* Footer */
.footer {
    background: #1a202c;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-logo i {
    margin-right: 10px;
    color: #6366f1;
}

.footer-section p {
    margin-bottom: 1.5rem;
    opacity: 0.8;
    line-height: 1.6;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: #2d3748;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: #6366f1;
    transform: translateY(-3px);
}

.footer-section h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: #6366f1;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.8rem;
}

.footer-section ul li a {
    color: #cbd5e0;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #6366f1;
}

.contact-info p {
    margin-bottom: 0.8rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.contact-info i {
    color: #6366f1;
    width: 20px;
}

.footer-bottom {
    border-top: 1px solid #2d3748;
    padding-top: 2rem;
    text-align: center;
    opacity: 0.8;
}

.footer-bottom i {
    color: #ff6b6b;
}

/* Year Selection Animation */
.year-selection-step {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    max-height: 0;
    margin-top: 0;
}

.year-selection-step.visible {
    opacity: 1;
    transform: translateY(0);
    max-height: 500px;
    margin-top: 3rem;
}

.selection-step {
    transition: all 0.3s ease;
}

/* Add visual feedback for college selection completion */
.custom-select.completed {
    border-color: #10b981 !important;
    background: linear-gradient(135deg, #f0fdf4, #dcfce7);
}

/* Ensure dropdown is above other elements */
.selection-container {
    position: relative;
    z-index: 100;
}

/* Debug styles - remove if dropdown works */
.custom-select {
    min-height: 50px;
}

.dropdown-container {
    min-height: 60px;
}

/* Copyright */
.copyright {
    background: #1a202c;
    color: white;
    text-align: center;
    padding: 20px 0;
    margin-top: 50px;
}

.copyright p {
    margin: 0;
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .selection-container {
        margin: 0 1rem;
        padding: 2rem;
    }
    
    .year-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Fix floating cards on mobile */
    .hero-image {
        height: 300px;
    }
    
    .card {
        padding: 15px;
        gap: 10px;
        font-size: 0.9rem;
    }
    
    .card i {
        font-size: 1.5rem;
    }
    
    .card span {
        font-size: 0.9rem;
    }
    
    .card-1 {
        top: 10%;
        right: 5%;
        left: auto;
    }
    
    .card-2 {
        top: 45%;
        left: 5%;
        right: auto;
    }
    
    .card-3 {
        bottom: 10%;
        right: 5%;
        left: auto;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .year-grid {
        grid-template-columns: 1fr;
    }
    
    .stats {
        grid-template-columns: 1fr;
    }
    
    /* Further mobile optimizations for floating cards */
    .hero-image {
        height: 250px;
    }
    
    .card {
        padding: 12px;
        gap: 8px;
        font-size: 0.8rem;
        max-width: 150px;
    }
    
    .card i {
        font-size: 1.3rem;
    }
    
    .card span {
        font-size: 0.8rem;
    }
    
    .card-1 {
        top: 5%;
        right: 2%;
    }
    
    .card-2 {
        top: 40%;
        left: 2%;
    }
    
    .card-3 {
        bottom: 5%;
        right: 2%;
    }
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Loading animation */
@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

.loading {
    animation: pulse 2s infinite;
}