@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300..700&display=swap');

/* GLOBAL STYLES & RESET */
:root {
    --primary-color: #007bff; /* Muted Blue for Primary CTA */
    --accent-color: #ff5e62; /* Vibrant Red/Pink for Gradients/Highlights */
    --dark-bg: #1e1e2e; /* Dark theme background */
    --card-bg: #282a3c; /* Slightly lighter card background */
    --text-color: #f8f8f2; /* Light text for dark background */
    --secondary-text: #bd93f9; /* Purple secondary text/links */
    --border-radius: 12px;
    --transition-speed: 0.3s;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Space Grotesk', sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden; /* Prevent horizontal scroll from animations */
}

a {
    color: var(--secondary-text);
    text-decoration: none;
    transition: color var(--transition-speed);
}

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

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

section {
    padding: 80px 0;
    position: relative;
    z-index: 10;
}

/* TYPOGRAPHY & GRADIENT TEXT */
h1, h2, h3 {
    font-weight: 700;
}

h2 {
    font-size: 2.5em;
    text-align: center;
    margin-bottom: 40px;
    color: var(--accent-color);
}

.gradient-text {
    background: linear-gradient(45deg, var(--secondary-text), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
}

/* ------------------------------------ */
/* ANIMATED BACKGROUND ELEMENTS (Blobs & Particles) */
/* ------------------------------------ */

.animated-bg-blobs, .animated-bg-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 0; /* Keep behind content */
}

/* Blobs - Large, subtle background elements */
.blob {
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.2;
    background: var(--secondary-text);
    animation: moveBlob 20s infinite alternate;
}

.blob1 { top: 10%; left: 5%; background: var(--accent-color); }
.blob2 { top: 40%; right: 15%; animation-delay: 5s; }
.blob3 { bottom: 10%; left: 30%; animation-delay: 10s; background: var(--primary-color); }
.blob4 { bottom: 5%; right: 5%; animation-delay: 15s; }

@keyframes moveBlob {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(100px, 200px) scale(1.2); }
}

/* Particles - Subtle, fading dots for a space/digital feel */
.animated-bg-particles {
    opacity: 0.1;
}

.particle {
    position: absolute;
    width: 3px;
    height: 3px;
    background-color: var(--text-color);
    border-radius: 50%;
    animation: floatParticle 15s infinite ease-in-out;
}

.particle1 { top: 10%; left: 15%; animation-delay: 1s; }
.particle2 { top: 80%; left: 50%; animation-delay: 5s; }
.particle3 { top: 30%; right: 10%; animation-delay: 9s; }
.particle4 { bottom: 20%; left: 70%; animation-delay: 2s; }
.particle5 { top: 50%; left: 5%; animation-delay: 12s; }
.particle6 { bottom: 40%; right: 40%; animation-delay: 7s; }

@keyframes floatParticle {
    0% { transform: translate(0, 0); opacity: 0; }
    50% { opacity: 1; }
    100% { transform: translate(50px, -50px); opacity: 0; }
}

/* ------------------------------------ */
/* HEADER & NAVIGATION */
/* ------------------------------------ */

.header {
    background-color: rgba(30, 30, 46, 0.8); /* Semi-transparent background */
    backdrop-filter: blur(10px); /* Frosted glass effect */
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.navbar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo {
    font-size: 1.8em;
    font-weight: 700;
    color: var(--text-color);
}

.logo i {
    color: var(--accent-color);
    margin-right: 5px;
}

.nav-links ul {
    list-style: none;
    display: flex;
    gap: 30px;
}

.nav-links a {
    font-weight: 500;
    transition: color var(--transition-speed), transform var(--transition-speed);
}

.nav-links a:hover {
    color: var(--accent-color);
    transform: translateY(-2px);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
    cursor: pointer;
    padding: 5px 10px;
    border: 1px solid var(--card-bg);
    border-radius: var(--border-radius);
    transition: background-color var(--transition-speed);
}

.user-profile:hover {
    background-color: var(--card-bg);
}

.avatar {
    width: 35px;
    height: 35px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--accent-color);
}

.nav-toggle, .nav-toggle-label {
    display: none; /* Hidden on desktop */
}

/* ------------------------------------ */
/* HERO SECTION */
/* ------------------------------------ */

.hero-section {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 150px 0;
    height: 100vh;
    background: radial-gradient(circle at 50% 10%, rgba(255, 94, 98, 0.05) 0%, rgba(30, 30, 46, 0.1) 60%);
}

.hero-heading {
    font-size: 3.8em;
    margin-bottom: 20px;
    line-height: 1.1;
}

.hero-subtext {
    font-size: 1.4em;
    color: var(--secondary-text);
    margin-bottom: 40px;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.cta-button {
    padding: 14px 30px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1.1em;
    letter-spacing: 0.5px;
    transition: all var(--transition-speed) ease;
    border: 2px solid transparent;
}

.primary-cta {
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-text));
    color: var(--dark-bg);
    box-shadow: 0 8px 15px rgba(0, 123, 255, 0.2);
}

.primary-cta:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 20px rgba(0, 123, 255, 0.4);
    opacity: 0.95;
}

.secondary-cta {
    background-color: transparent;
    color: var(--text-color);
    border-color: var(--secondary-text);
}

.secondary-cta:hover {
    background-color: var(--secondary-text);
    color: var(--dark-bg);
    transform: translateY(-3px);
}

/* Keyframe Animation for CTA */
@keyframes pulse {
    0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(255, 94, 98, 0.4); }
    70% { transform: scale(1.05); box-shadow: 0 0 0 15px rgba(255, 94, 98, 0); }
    100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(255, 94, 98, 0); }
}

.primary-cta.animated-cta {
    animation: pulse 2s infinite ease-out;
}

/* ------------------------------------ */
/* COURSE CARDS & FEATURES (Grid Layout) */
/* ------------------------------------ */

.course-cards-container {
    display: flex;
    gap: 30px;
    justify-content: center;
    margin-bottom: 50px;
}

.course-card {
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: var(--border-radius);
    flex: 1;
    max-width: 450px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

/* 3D Tilt/Lift Effect on Hover */
.course-card:hover {
    transform: translateY(-10px) rotateX(1deg) scale(1.02); /* Lift and slight tilt */
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), 0 0 0 2px var(--accent-color);
}

.course-icon {
    font-size: 3em;
    margin-bottom: 15px;
    color: var(--accent-color);
}

.course-card h3 {
    font-size: 1.5em;
    margin-bottom: 10px;
    color: var(--text-color);
}

.course-card p {
    margin-bottom: 20px;
    color: var(--secondary-text);
}

.course-link {
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.9em;
    color: var(--primary-color);
}

.course-link:hover {
    color: var(--accent-color);
}

/* Floating Animation for Cards */
@keyframes floating {
    0% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
    100% { transform: translateY(0); }
}

.floating-card {
    animation: floating 4s ease-in-out infinite;
}
.floating-card:nth-child(2) {
    animation-delay: 1s;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    text-align: center;
}

.feature-card {
    background-color: var(--card-bg);
    padding: 25px;
    border-radius: var(--border-radius);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform var(--transition-speed);
}

.feature-card:hover {
    transform: scale(1.05); /* Simple scale effect on hover */
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

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

/* ------------------------------------ */
/* TUTORIALS & HACKATHON SECTIONS */
/* ------------------------------------ */

.tutorials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.tutorial-card {
    background-color: var(--card-bg);
    padding: 25px;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: background-color 0.5s, transform var(--transition-speed);
}

.tutorial-card:hover {
    background-color: rgba(40, 42, 60, 0.8);
    transform: translateY(-5px);
}

.hackathon-content {
    display: flex;
    align-items: center;
    gap: 50px;
    background-color: var(--card-bg);
    padding: 40px;
    border-radius: var(--border-radius);
}

.hackathon-info {
    flex: 1;
}

.hackathon-icon {
    font-size: 3em;
    color: var(--accent-color);
    margin-bottom: 15px;
}

.hackathon-features {
    list-style: none;
    padding-left: 0;
    margin: 20px 0;
}

.hackathon-features li {
    margin-bottom: 10px;
    color: var(--text-color);
}

.hackathon-features i {
    color: var(--primary-color);
    margin-right: 10px;
}

.hackathon-link {
    display: inline-block;
    background-color: var(--accent-color);
    color: var(--dark-bg);
    padding: 10px 25px;
    border-radius: 50px;
    font-weight: 700;
    margin-top: 15px;
    transition: transform var(--transition-speed), opacity var(--transition-speed);
}

.hackathon-link:hover {
    transform: scale(1.05);
    opacity: 0.9;
}

.hackathon-image {
    flex: 1;
    max-width: 400px;
}

/* ------------------------------------ */
/* FOOTER */
/* ------------------------------------ */

.footer {
    background-color: #1a1a25;
    padding: 40px 0;
    text-align: center;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    text-align: left;
}

.footer-contact, .footer-links, .footer-copyright {
    margin-bottom: 20px;
}

.footer-links a {
    display: block;
    margin-top: 10px;
}

.footer-links i {
    margin-right: 5px;
}

.footer-copyright {
    width: 100%;
    text-align: center;
    margin-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
}

/* ------------------------------------ */
/* MEDIA QUERIES (RESPONSIVENESS) */
/* ------------------------------------ */

/* Tablet & Smaller Desktop */
@media (max-width: 1024px) {
    .hero-heading {
        font-size: 3em;
    }
    .course-cards-container {
        flex-direction: column;
        align-items: center;
    }
    .course-card {
        max-width: 80%;
    }
    .hackathon-content {
        flex-direction: column;
        text-align: center;
    }
    .hackathon-info {
        order: 2;
    }
    .hackathon-image {
        order: 1;
    }
}

/* Mobile Devices */
@media (max-width: 768px) {
    /* Mobile Navigation Toggle */
    .nav-links {
        position: absolute;
        top: 100%; /* Below the header */
        left: 0;
        width: 100%;
        background-color: var(--dark-bg);
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.5);
        display: none;
        padding: 20px;
        z-index: 990;
    }

    .nav-links ul {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    /* Show menu when checkbox is checked */
    .nav-toggle:checked ~ .nav-links {
        display: block;
    }

    .nav-toggle-label {
        display: block;
        cursor: pointer;
        padding: 10px;
        order: 1; /* Move toggle button to control position in flex */
    }
    
    .nav-toggle-icon {
        display: block;
        width: 25px;
        height: 3px;
        background-color: var(--text-color);
        position: relative;
        transition: transform var(--transition-speed), background-color var(--transition-speed);
    }
    
    .nav-toggle-icon::before,
    .nav-toggle-icon::after {
        content: '';
        position: absolute;
        width: 100%;
        height: 3px;
        background-color: var(--text-color);
        transition: transform var(--transition-speed), top var(--transition-speed);
    }
    
    .nav-toggle-icon::before {
        top: -8px;
    }
    
    .nav-toggle-icon::after {
        top: 8px;
    }
    
    /* Toggle animation to 'X' */
    .nav-toggle:checked ~ .nav-toggle-label .nav-toggle-icon {
        background-color: transparent;
    }
    
    .nav-toggle:checked ~ .nav-toggle-label .nav-toggle-icon::before {
        transform: rotate(45deg);
        top: 0;
    }
    
    .nav-toggle:checked ~ .nav-toggle-label .nav-toggle-icon::after {
        transform: rotate(-45deg);
        top: 0;
    }


    .user-profile {
        display: none; /* Hide profile for cleaner mobile header */
    }

    .hero-heading {
        font-size: 2.5em;
    }
    .hero-subtext {
        font-size: 1.1em;
    }
    .cta-buttons {
        flex-direction: column;
    }
    .course-card {
        max-width: 100%;
    }
    .footer-content {
        justify-content: center;
        text-align: center;
    }
    .footer-contact, .footer-links {
        width: 100%;
        text-align: center;
    }
}