/* 
    Byte Gurukul - Design System 
    Theme: Professional, Modern, Premium
*/

:root {
    --primary: #0F172A;
    --primary-light: #1E293B;
    --secondary: #7C3AED;
    --accent: #06B6D4;
    --text-main: #F8FAFC;
    --text-muted: #94A3B8;
    --bg-dark: #020617;
    --white: #FFFFFF;
    --gradient: linear-gradient(135deg, #0F172A 0%, #7C3AED 100%);
    --gradient-glow: linear-gradient(135deg, #7C3AED 0%, #06B6D4 100%);
    --card-bg: rgba(30, 41, 59, 0.5);
    --border-color: rgba(255, 255, 255, 0.1);

    --container-max: 1200px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Modern Reset */
*,
*::before,
*::after {
    box-sizing: border-box;
}

body,
h1,
h2,
h3,
h4,
p,
figure,
blockquote,
dl,
dd {
    margin: 0;
}

ul[role='list'],
ol[role='list'] {
    list-style: none;
}

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    text-rendering: optimizeSpeed;
    line-height: 1.6;
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    overflow-x: hidden;
}

img,
picture {
    max-width: 100%;
    display: block;
}

/* Utilities */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.small-container {
    max-width: 800px;
}

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

.w-full {
    width: 100%;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.8rem 1.8rem;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-family: inherit;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-glow);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(124, 58, 237, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(124, 58, 237, 0.5);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border: 1px solid var(--border-color);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--white);
}

.btn-sm {
    padding: 0.5rem 1.2rem;
    font-size: 0.9rem;
}

/* Header & Nav */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    backdrop-filter: blur(10px);
    background: rgba(2, 6, 23, 0.8);
    border-bottom: 1px solid var(--border-color);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    text-decoration: none;
    letter-spacing: -0.5px;
}

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

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

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

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--white);
    cursor: pointer;
}

/* Sections General */
section {
    padding: 100px 0;
}

section h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

section h2 span {
    background: var(--gradient-glow);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto 3rem;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 120px;
}

.hero-bg-gradient {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 80% 20%, rgba(124, 58, 237, 0.15), transparent 40%),
        radial-gradient(circle at 20% 80%, rgba(6, 182, 212, 0.15), transparent 40%);
    z-index: -1;
}

.hero-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-text h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.hero-text h1 span {
    background: var(--gradient-glow);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-text p {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    max-width: 500px;
}

.hero-btns {
    display: flex;
    gap: 1.5rem;
}

/* Hero Image & Shapes */
.image-wrapper {
    position: relative;
}

.main-img {
    border-radius: 20px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    position: relative;
    z-index: 2;
}

.abstract-shape {
    position: absolute;
    filter: blur(80px);
    z-index: 1;
    border-radius: 50%;
}

.shape-1 {
    width: 300px;
    height: 300px;
    background: var(--secondary);
    top: -50px;
    right: -50px;
    opacity: 0.4;
}

.shape-2 {
    width: 250px;
    height: 250px;
    background: var(--accent);
    bottom: -50px;
    left: -50px;
    opacity: 0.3;
}

/* Course Grid */
.course-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.course-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: 24px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.course-card:hover {
    transform: translateY(-10px);
    background: rgba(30, 41, 59, 0.8);
    border-color: var(--secondary);
}

.course-badge {
    background: rgba(124, 58, 237, 0.1);
    color: var(--secondary);
    padding: 0.3rem 1rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 1.5rem;
}

.course-card h3 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.course-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.course-details {
    list-style: none;
    padding: 0;
    margin: 0 0 1.5rem 0;
    display: flex;
    gap: 1.5rem;
}

.course-details li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.course-details svg {
    width: 16px;
    color: var(--accent);
}

.course-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.price {
    font-size: 1.5rem;
    font-weight: 700;
}

/* Why Us Section */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
}

.feature-item {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.feature-icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background: rgba(124, 58, 237, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--secondary);
}

.feature-item h4 {
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.feature-item p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.rounded-img {
    border-radius: 30px;
}

/* Testimonials */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.testimonial-card {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: 24px;
    border: 1px solid var(--border-color);
}

.quote-icon {
    color: var(--secondary);
    margin-bottom: 1.5rem;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 2rem;
}

.user-avatar {
    width: 50px;
    height: 50px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.user-info span {
    color: var(--text-muted);
    font-size: 0.85rem;
    display: block;
}

/* FAQ Accordion */
.accordion {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.accordion-item {
    background: var(--card-bg);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.accordion-header {
    width: 100%;
    padding: 1.5rem;
    background: none;
    border: none;
    color: var(--white);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    font-family: inherit;
    text-align: left;
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
    padding: 0 1.5rem;
}

.accordion-content p {
    margin-bottom: 1.5rem;
    color: var(--text-muted);
}

.accordion-item.active .accordion-content {
    max-height: 200px;
}

.accordion-item.active .accordion-header svg {
    transform: rotate(180deg);
}

/* Contact Form */
.contact-form {
    background: var(--card-bg);
    padding: 3rem;
    border-radius: 24px;
    border: 1px solid var(--border-color);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 1rem;
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--white);
    font-family: inherit;
}

.form-group input:focus {
    outline: none;
    border-color: var(--secondary);
}

.contact-info {
    list-style: none;
    padding: 0;
    margin-top: 2.5rem;
}

.contact-info li {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    color: var(--text-muted);
}

.contact-info svg {
    color: var(--accent);
}

/* Footer */
.footer {
    padding: 3rem 0;
    border-top: 1px solid var(--border-color);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.social-links {
    display: flex;
    gap: 1.5rem;
}

.social-links a {
    color: var(--text-muted);
    transition: var(--transition);
}

.social-links a:hover {
    color: var(--white);
}

/* Animations */
.animate-reveal {
    opacity: 0;
    transform: translateY(30px);
}

.animate-reveal.active {
    opacity: 1;
    transform: translateY(0);
    transition: transform 0.8s ease, opacity 0.8s ease;
}

.animate-reveal-up {
    opacity: 0;
    transform: translateY(40px);
}

.animate-reveal-up.active {
    opacity: 1;
    transform: translateY(0);
    transition: transform 0.8s ease, opacity 0.8s ease;
}

/* Mobile Drawer */
.mobile-drawer {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background: var(--bg-dark);
    z-index: 2000;
    padding: 2rem;
    transition: var(--transition);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 2rem;
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
}

.mobile-drawer.active {
    right: 0;
}

.drawer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.drawer-close {
    background: none;
    border: none;
    color: var(--white);
    cursor: pointer;
}

.drawer-links {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.drawer-links a {
    color: var(--white);
    text-decoration: none;
    font-size: 1.2rem;
    font-weight: 600;
}

.drawer-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1500;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.drawer-overlay.active {
    opacity: 1;
    visibility: visible;
}

body.no-scroll {
    overflow: hidden;
}

/* Responseive */
@media (max-width: 992px) {
    section {
        padding: 80px 0;
    }

    .hero-content,
    .grid-2 {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }

    .hero-text h1 {
        font-size: 3rem;
    }

    .hero-btns {
        justify-content: center;
    }

    .hero-text p {
        margin-left: auto;
        margin-right: auto;
    }

    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .nav-btn {
        display: none;
    }
}

@media (max-width: 768px) {
    .hero-text h1 {
        font-size: 2.5rem;
    }

    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .contact-form {
        padding: 1.5rem;
    }
}