/* Custom CSS for ShikshaVerse */

/* 1. Root Variables & Reset */
:root {
    --primary-color: #007bff; /* Primary Blue for institutional feel */
    --secondary-color: #28a745; /* Green Accent for CTAs */
    --accent-color: #ffc107; /* Vibrant Yellow/Gold for highlights */
    --dark-color: #212529;
    --light-color: #f8f9fa;
    --white-color: #ffffff;
    --text-color: #495057; /* Dark Grey for body text */
    --heading-color: #212529; /* Near-black for headings */
    --font-family: 'Poppins', sans-serif;
    --section-padding: 80px 0;
    --card-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    --border-radius: 8px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    color: var(--text-color);
    background-color: var(--white-color);
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: color 0.3s ease, background-color 0.3s ease;
}

ul {
    list-style: none;
}

/* General Layout Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.section-padding {
    padding: var(--section-padding);
}

.dark-section {
    background-color: var(--light-color); /* Subtle contrast */
}

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

.mt-1 { margin-top: 15px; }
.mt-2 { margin-top: 30px; }

/* 2. Typography & Headings */
h1, h2, h3, h4 {
    color: var(--heading-color);
    line-height: 1.2;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--dark-color);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    line-height: 1;
}

.logo span {
    color: var(--primary-color);
}

.tagline-header {
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--text-color);
    margin-top: 2px;
}

.section-heading {
    margin-bottom: 40px;
}

.sub-title {
    font-size: 1rem;
    color: var(--primary-color);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 10px;
}

.main-title {
    font-size: 2.2rem;
    font-weight: 700;
}

.main-title strong {
    color: var(--primary-color);
}

/* New: Typing Cursor Style */
.typing-cursor {
    display: inline-block;
    color: var(--primary-color);
    font-weight: 700;
    animation: blink 0.7s infinite;
}
@keyframes blink {
    0% { opacity: 1; }
    50% { opacity: 0; }
    100% { opacity: 1; }
}

/* 3. Buttons & CTAs */
.btn {
    padding: 10px 25px;
    border-radius: 50px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 2px solid transparent;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--white-color);
}

.btn-primary:hover {
    background-color: #0056b3;
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: var(--white-color);
}

.btn-secondary:hover {
    background-color: #1e7e34;
    transform: translateY(-2px);
}

.btn-optional {
    background-color: var(--accent-color);
    color: var(--dark-color);
    border: 2px solid transparent;
}
.btn-optional:hover {
    background-color: #e0a800;
    transform: translateY(-2px);
}

.btn-contact {
    background-color: var(--accent-color);
    color: var(--dark-color);
    padding: 8px 20px;
    border-radius: var(--border-radius);
    font-weight: 500;
    border: 2px solid transparent; 
}

.btn-contact:hover {
    background-color: #e0a800;
    border-color: var(--dark-color);
}

.btn-large {
    padding: 14px 30px;
    font-size: 1.1rem;
}

/* 4. Header & Navigation */
.header {
    background-color: var(--white-color);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.nav-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-menu {
    display: flex;
    gap: 30px;
}

.nav-link {
    color: var(--dark-color);
    font-weight: 500;
    padding: 5px 0;
    position: relative;
}

.nav-link.active::after,
.nav-link:not(.btn-contact):hover::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -5px;
    width: 100%;
    height: 3px;
    background-color: var(--primary-color);
    transition: transform 0.3s ease;
    transform: scaleX(1);
}

.nav-link:not(.active):not(.btn-contact)::after {
    transform: scaleX(0);
}

.menu-toggle {
    font-size: 1.5rem;
    cursor: pointer;
    display: none; 
    color: var(--dark-color);
}

/* 5. Hero Section (UPDATED) */
.hero-section {
    padding-top: 150px;
    padding-bottom: 80px;
    min-height: 90vh; 
    display: flex;
    align-items: center;
    text-align: center;
    position: relative;
    overflow: hidden; 
    background: var(--white-color);
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--light-color) 0%, rgba(255, 255, 255, 0) 70%);
    z-index: -1;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    z-index: 1; 
}

.tagline-motto {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--secondary-color);
    text-transform: uppercase;
    margin-bottom: 10px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    max-width: 1000px;
}

.hero-subtitle {
    font-size: 1.25rem;
    max-width: 850px;
    margin-bottom: 40px;
}

.cta-group {
    display: flex;
    gap: 15px; 
    justify-content: center;
    flex-wrap: wrap; 
    margin-bottom: 40px;
}

/* New: Hero Stats Section */
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 50px;
    padding: 20px 40px;
    background-color: var(--light-color);
    border-radius: var(--border-radius);
    margin-bottom: 60px;
    box-shadow: var(--card-shadow);
}

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

.stat-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.stat-item h4 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0;
}

.stat-item p {
    font-size: 0.9rem;
    margin: 0;
    color: var(--text-color);
}

/* 6. Feature/Why Us Section */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.feature-card {
    background-color: var(--white-color);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    text-align: center;
    border-top: 4px solid var(--primary-color);
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    font-size: 2.5rem;
    color: var(--secondary-color);
    margin-bottom: 15px;
}

.feature-card h4 {
    font-weight: 600;
    margin-bottom: 10px;
}

/* 7. Resource Sections (+2 and Engineering) */
.resource-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.resource-card {
    background-color: var(--white-color);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, border-left 0.3s ease;
    border-left: 5px solid transparent;
}

.dark-section .resource-card {
    background-color: var(--white-color);
}

.resource-card:hover {
    transform: translateY(-5px);
    border-left-color: var(--primary-color);
}

.card-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.resource-card h4 {
    font-weight: 600;
    margin-bottom: 10px;
}

.resource-card p {
    flex-grow: 1;
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.card-link {
    color: var(--primary-color);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.card-link:hover {
    color: var(--secondary-color);
}

/* 8. About Section */
.about-flex {
    display: flex;
    gap: 50px;
    align-items: center;
}

.about-image-box {
    flex: 1;
    max-width: 400px;
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: transform 0.5s ease;
}

.about-image-box:hover {
    transform: scale(1.02);
}

.about-image-box img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--border-radius);
}

.about-content {
    flex: 2;
}

.accent-text {
    color: var(--primary-color);
    font-weight: 700;
}

/* 9. Contact Section */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.contact-card {
    text-align: center;
    padding: 40px 20px;
    border-radius: var(--border-radius);
    background-color: var(--white-color);
    box-shadow: var(--card-shadow);
    transition: transform 0.3s ease;
}

.contact-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.contact-card a {
    display: block;
    color: inherit;
}

.contact-card i {
    font-size: 2.5rem;
    color: var(--secondary-color);
    margin-bottom: 15px;
}

.contact-card h4 {
    font-weight: 600;
    margin-bottom: 5px;
    color: var(--heading-color);
}

.contact-card p {
    font-size: 1rem;
    color: var(--text-color);
}


/* 10. Footer */
.footer {
    padding: 30px 0;
    background-color: var(--dark-color);
    color: var(--light-color);
}

.footer-social {
    margin-bottom: 20px;
}

.footer-social a {
    color: var(--white-color);
    font-size: 1.5rem;
    margin: 0 10px;
    transition: color 0.3s ease;
}

.footer-social a:hover {
    color: var(--accent-color);
}

.copyright-text {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* 11. Media Queries for Mobile-First Responsiveness */
@media (max-width: 992px) {
    /* Mobile-specific navigation */
    .menu-toggle {
        display: block;
        z-index: 1001; 
    }

    .logo {
        flex-direction: row;
        gap: 5px;
        align-items: center;
    }
    .tagline-header {
        display: none; 
    }

    .nav-menu {
        position: fixed; 
        top: 0;
        right: 0;
        width: 70%; 
        height: 100vh;
        background-color: var(--dark-color);
        flex-direction: column;
        padding-top: 80px; 
        transform: translateX(100%); 
        transition: transform 0.4s ease-in-out;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.3);
        align-items: flex-start;
        gap: 0;
    }

    .nav-menu.active {
        transform: translateX(0); 
    }

    .nav-link {
        color: var(--light-color);
        width: 100%;
        padding: 15px 30px; 
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        font-size: 1.1rem;
    }
    
    .nav-link:hover {
        background-color: rgba(255, 255, 255, 0.05);
    }
    
    .nav-link.active::after {
        display: none; 
    }

    .btn-contact {
        margin: 20px 30px;
        width: calc(100% - 60px); 
        border-color: var(--accent-color);
        color: var(--dark-color); 
    }

    /* Hero Section Mobile Adjustments */
    .hero-section {
        min-height: auto;
    }
    .hero-title {
        font-size: 2.5rem;
    }
    .hero-visual {
        transform: none; 
        width: 95%;
    }
    .cta-group {
        flex-direction: column;
        gap: 10px;
        width: 90%;
        max-width: 350px;
        margin-bottom: 30px;
    }

    .btn-large {
        width: 100%;
    }
    
    .hero-stats {
        gap: 15px;
        flex-wrap: wrap;
        padding: 15px 10px;
        width: 90%;
    }
    
    .stat-item {
        width: 30%; 
    }
}

@media (max-width: 768px) {
    /* General adjustments */
    .section-padding {
        padding: 60px 0;
    }
    
    .hero-section {
        padding-top: 100px;
        min-height: auto;
    }

    .main-title {
        font-size: 1.8rem;
    }

    /* About Section */
    .about-flex {
        flex-direction: column;
        gap: 30px;
    }
    
    .about-image-box {
        max-width: 100%;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 1.7rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }
}