/* -------------------------------------------------------------
   INSTITUTE OF ENGLISH - STYLE SHEET (PREMIUM VANILLA CSS)
   ------------------------------------------------------------- */

/* 1. Global Reset & Variables */
:root {
    --primary: #1E1B4B;
    --primary-light: #2E2A72;
    --primary-dark: #0F0E26;
    --accent: #F59E0B;
    --accent-hover: #D97706;
    --accent-glow: rgba(245, 158, 11, 0.35);
    --white: #FFFFFF;
    --light-bg: #FDFBF7;
    --border-color: rgba(255, 255, 255, 0.08);
    --border-color-light: rgba(30, 27, 75, 0.08);
    --text-white: #FFFFFF;
    --text-dark: #1E1B4B;
    --text-muted-light: #A5B4FC;
    --text-muted-dark: #5C6479;
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: all 0.2s ease;
    --shadow-premium: 0 20px 40px -15px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 20px rgba(245, 158, 11, 0.25);
}

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

html {
    font-size: 16px;
    overflow-x: hidden;
}

body {
    font-family: var(--font-body);
    background-color: var(--primary-dark);
    color: var(--text-white);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--primary-dark);
}
::-webkit-scrollbar-thumb {
    background: var(--primary-light);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent);
}

/* Typography & Helper Classes */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    letter-spacing: -0.02em;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-fast);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section-padding {
    padding: 100px 0;
}

.bg-light {
    background-color: var(--light-bg);
    color: var(--text-dark);
}

.text-cyan {
    color: var(--accent);
}

.text-dark {
    color: var(--text-dark);
}

.text-muted {
    color: var(--text-muted-dark);
}

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

.flex-center {
    display: flex;
    justify-content: center;
    align-items: center;
}

.flex-start {
    display: flex;
    justify-content: flex-start;
    align-items: flex-start;
}

.margin-right-xs {
    margin-right: 8px;
}

.margin-bottom-md {
    margin-bottom: 24px;
}

/* 2. Glassmorphism Card Style */
.glass {
    background: rgba(30, 27, 75, 0.45);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-premium);
    border-radius: 16px;
    transition: var(--transition-smooth);
}

/* 3. Mouse Following Glowing Orb */
.cursor-glow {
    position: fixed;
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(245, 158, 11, 0.12) 0%, rgba(245, 158, 11, 0.03) 45%, rgba(0, 0, 0, 0) 70%);
    pointer-events: none;
    transform: translate(-50%, -50%);
    z-index: 9999;
    mix-blend-mode: screen;
    border-radius: 50%;
    display: none; /* Controlled via JS, hidden on touch screens */
}

/* 4. Buttons styling */
.btn {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    font-family: var(--font-heading);
    font-weight: 600;
    padding: 12px 28px;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition-smooth);
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background-color: var(--white);
    color: var(--primary-dark);
    box-shadow: 0 0 30px var(--accent-glow);
    transform: translateY(-3px);
}

.btn-outline {
    border-color: var(--accent);
    color: var(--accent);
    background-color: transparent;
}

.btn-outline:hover {
    background-color: var(--accent);
    color: var(--primary-dark);
    box-shadow: 0 0 30px var(--accent-glow);
    transform: translateY(-3px);
}

.btn-full {
    width: 100%;
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1.1rem;
}

.btn-sm {
    padding: 8px 18px;
    font-size: 0.9rem;
}

.btn-glowing {
    position: relative;
    box-shadow: 0 0 20px var(--accent-glow);
}

.btn-glowing::after {
    content: '';
    position: absolute;
    top: -4px;
    left: -4px;
    right: -4px;
    bottom: -4px;
    border: 2px solid var(--accent);
    border-radius: 12px;
    opacity: 0;
    transition: var(--transition-smooth);
    animation: pulseGlow 2s infinite;
}

@keyframes pulseGlow {
    0% {
        transform: scale(0.98);
        opacity: 0.8;
    }
    70% {
        transform: scale(1.05);
        opacity: 0;
    }
    100% {
        transform: scale(1.05);
        opacity: 0;
    }
}

.btn-whatsapp {
    background-color: #25D366;
    border-color: #25D366;
    color: var(--white);
}

.btn-whatsapp:hover {
    background-color: #1ebd57;
    border-color: #1ebd57;
    color: var(--white);
    box-shadow: 0 0 20px rgba(37, 211, 102, 0.4);
}

/* 5. Sticky Navigation Bar */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition-smooth);
}

.header.scrolled {
    padding: 12px 0;
    background: rgba(30, 27, 75, 0.75);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 1.4rem;
    font-family: var(--font-heading);
    color: var(--white);
}

.logo-icon {
    color: var(--accent);
    display: flex;
    align-items: center;
}

.logo-text {
    letter-spacing: -0.03em;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-muted-light);
    position: relative;
    padding: 6px 0;
}

.nav-link:hover, .nav-link.active {
    color: var(--accent);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent);
    transition: var(--transition-smooth);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-actions-mobile {
    display: none;
}

.mobile-nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.mobile-nav-toggle .bar {
    width: 25px;
    height: 2px;
    background-color: var(--white);
    transition: var(--transition-smooth);
}

/* 6. Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 120px;
    padding-bottom: 80px;
    overflow: hidden;
}

#particleCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

.hero-bg-gradient {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-dark) 0%, #13113C 100%);
    z-index: 0;
}

.hero-container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 48px;
    align-items: center;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.hero-tag {
    font-family: var(--font-heading);
    color: var(--accent);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 0.85rem;
    margin-bottom: 16px;
    background: rgba(245, 158, 11, 0.1);
    padding: 6px 16px;
    border-radius: 50px;
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.hero-title {
    font-size: 3.5rem;
    line-height: 1.15;
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-muted-light);
    margin-bottom: 36px;
    max-width: 580px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
}

.hero-visual {
    display: flex;
    justify-content: center;
    position: relative;
}

.visual-wrapper {
    position: relative;
    width: 100%;
    max-width: 450px;
}

.hero-illustration {
    width: 100%;
    z-index: 2;
    position: relative;
    filter: drop-shadow(0 20px 40px rgba(0,0,0,0.4));
    animation: floatIllustration 6s ease-in-out infinite;
}

@keyframes floatIllustration {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-15px);
    }
}

.illustration-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120%;
    height: 120%;
    background: radial-gradient(circle, rgba(245, 158, 11, 0.15) 0%, transparent 60%);
    z-index: 1;
    pointer-events: none;
}

/* Floating Badges in Hero */
.floating-badge {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(46, 42, 114, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    padding: 10px 18px;
    border-radius: 50px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    z-index: 3;
    animation: floatBadge 4s ease-in-out infinite;
}

.floating-badge .badge-icon {
    color: var(--accent);
    font-weight: bold;
}

.floating-badge .badge-text {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.85rem;
    white-space: nowrap;
}

.badge-ielts {
    top: 15%;
    left: -10%;
    animation-delay: 0s;
}

.badge-spoken {
    top: 65%;
    left: -15%;
    animation-delay: 1s;
}

.badge-gre {
    top: 25%;
    right: -10%;
    animation-delay: 2s;
}

.badge-pte {
    top: 75%;
    right: -5%;
    animation-delay: 3s;
}

@keyframes floatBadge {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-8px);
    }
}

/* Floating Academic Objects (Anti-gravity background layer) */
.floating-object {
    position: absolute;
    z-index: 1;
    opacity: 0.18;
    pointer-events: none;
    animation: antiGravityFloat 15s linear infinite;
}

.fo-book {
    top: 20%;
    left: 8%;
    animation-duration: 20s;
}

.fo-cap {
    top: 75%;
    left: 45%;
    animation-duration: 25s;
    animation-delay: -5s;
}

.fo-globe {
    top: 15%;
    right: 48%;
    animation-duration: 22s;
    animation-delay: -2s;
}

.fo-alphabet {
    top: 50%;
    right: 8%;
    animation-duration: 18s;
    animation-delay: -8s;
}

.fo-alphabet .fo-text {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 800;
    color: var(--accent);
}

.fo-badge {
    top: 80%;
    left: 10%;
    animation-duration: 30s;
    animation-delay: -10s;
}

.fo-badge .badge-inner {
    border: 2px solid var(--accent);
    color: var(--accent);
    font-family: var(--font-heading);
    font-weight: 800;
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 0.9rem;
    letter-spacing: 0.1em;
}

@keyframes antiGravityFloat {
    0% {
        transform: translateY(0px) rotate(0deg) translateX(0px);
    }
    33% {
        transform: translateY(-20px) rotate(5deg) translateX(10px);
    }
    66% {
        transform: translateY(-10px) rotate(-5deg) translateX(-10px);
    }
    100% {
        transform: translateY(0px) rotate(0deg) translateX(0px);
    }
}

/* 7. Statistics Section */
.stats-section {
    padding: 40px 0;
    position: relative;
    z-index: 2;
    margin-top: -40px;
}

.stats-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.stat-card {
    text-align: center;
    padding: 32px 24px;
}

.stat-number {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 2.8rem;
    line-height: 1.1;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-muted-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
}

/* 8. Section Header (Common) */
.section-header {
    max-width: 650px;
    margin: 0 auto 60px;
}

.section-title {
    font-size: 2.5rem;
    line-height: 1.2;
    margin-bottom: 16px;
    position: relative;
    display: inline-block;
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--text-muted-light);
}

/* 9. Courses Section */
.courses-section {
    position: relative;
    z-index: 2;
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.course-card {
    padding: 40px 28px;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.course-card:hover {
    transform: translateY(-8px);
    border-color: rgba(245, 158, 11, 0.3);
    box-shadow: 0 20px 40px rgba(245, 158, 11, 0.1);
}

.course-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    background: rgba(245, 158, 11, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    transition: var(--transition-smooth);
}

.course-card:hover .course-icon {
    background: var(--accent);
    color: var(--primary-dark);
}

.course-card:hover .course-icon svg {
    stroke: var(--primary-dark);
}

.course-title {
    font-size: 1.4rem;
    margin-bottom: 16px;
}

.course-desc {
    font-size: 0.92rem;
    color: var(--text-muted-light);
    margin-bottom: 24px;
    flex-grow: 1;
}

.course-features {
    margin-bottom: 32px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.course-features li {
    font-size: 0.88rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.course-features li span {
    color: var(--accent);
    font-weight: bold;
}

/* 10. Why Choose Us Section */
.why-us-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.why-us-card {
    background: var(--white);
    border: 1px solid var(--border-color-light);
    border-radius: 16px;
    padding: 36px 28px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.02);
    transition: var(--transition-smooth);
}

.why-us-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 40px rgba(15, 23, 42, 0.08);
}

.why-us-icon {
    width: 48px;
    height: 48px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.why-us-title {
    font-size: 1.15rem;
    margin-bottom: 12px;
}

.why-us-text {
    font-size: 0.88rem;
    color: var(--text-muted-dark);
}

/* 11. Student Success Section */
.success-showcase {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.success-card {
    padding: 32px;
}

.student-profile {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.student-avatar {
    width: 50px;
    height: 50px;
    background: rgba(0, 212, 255, 0.1);
    border: 1.5px solid var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.1rem;
}

.student-name {
    font-size: 1.1rem;
    margin-bottom: 2px;
}

.student-course {
    font-size: 0.82rem;
    color: var(--text-muted-light);
}

.score-badge {
    display: inline-block;
    background: rgba(245, 158, 11, 0.08);
    border: 1px solid rgba(245, 158, 11, 0.2);
    border-radius: 12px;
    padding: 12px 20px;
    margin-bottom: 24px;
}

.score-value {
    font-family: var(--font-heading);
    font-weight: 850;
    font-size: 1.8rem;
    line-height: 1;
    margin-bottom: 2px;
}

.score-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted-light);
}

.progress-container {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.progress-details {
    display: flex;
    justify-content: space-between;
    font-size: 0.82rem;
    color: var(--text-muted-light);
}

.progress-bar-bg {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 10px;
    overflow: hidden;
    margin-top: 4px;
}

.progress-bar-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 10px;
    width: 0; /* Animated on reveal */
    transition: width 1.5s cubic-bezier(0.16, 1, 0.3, 1);
}

/* 12. Demo Class Banner */
.demo-banner-section {
    position: relative;
    z-index: 2;
}

.demo-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 60px 80px;
    gap: 40px;
    border-color: rgba(245, 158, 11, 0.2);
    box-shadow: 0 0 40px rgba(245, 158, 11, 0.08);
    position: relative;
    overflow: hidden;
}

.demo-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(245, 158, 11, 0.05) 0%, transparent 100%);
    pointer-events: none;
}

.demo-content {
    flex: 1;
}

.demo-title {
    font-size: 2.2rem;
    margin-bottom: 12px;
}

.demo-text {
    font-size: 1.02rem;
    color: var(--text-muted-light);
    max-width: 650px;
}

.demo-action {
    flex-shrink: 0;
}

/* 13. Testimonials Carousel */
.testimonial-carousel-wrapper {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    overflow: hidden;
    padding: 10px;
}

.testimonial-carousel {
    display: flex;
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.testimonial-slide {
    min-width: 100%;
    padding: 48px;
    background: rgba(255, 255, 255, 0.55);
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.02);
    color: var(--text-dark);
}

.testimonial-slide.glass {
    /* override glass text color if needed, but test slide has light background wrapper */
    background: var(--white);
}

.rating-stars {
    font-size: 1.25rem;
    margin-bottom: 20px;
    letter-spacing: 2px;
}

.testimonial-text {
    font-size: 1.15rem;
    line-height: 1.7;
    font-style: italic;
    margin-bottom: 28px;
    font-weight: 400;
}

.testimonial-author {
    border-top: 1px solid rgba(15, 23, 42, 0.08);
    padding-top: 20px;
}

.author-name {
    font-size: 1.05rem;
    margin-bottom: 2px;
}

.author-course {
    font-size: 0.8rem;
}

.carousel-indicators {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 32px;
}

.indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--text-muted-dark);
    cursor: pointer;
    transition: var(--transition-fast);
}

.indicator.active {
    background: var(--accent);
    transform: scale(1.3);
}

/* 14. Institute Gallery Section */
.gallery-filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 40px;
}

.filter-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    padding: 8px 20px;
    border-radius: 50px;
    color: var(--text-muted-light);
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 0.88rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

.filter-btn:hover, .filter-btn.active {
    background: var(--accent);
    color: var(--primary-dark);
    border-color: var(--accent);
}

.gallery-masonry {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-gap: 20px;
}

.gallery-item {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    aspect-ratio: 4/3;
    cursor: pointer;
    box-shadow: var(--shadow-premium);
    transition: var(--transition-smooth);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(15, 14, 38, 0.9) 0%, rgba(15, 14, 38, 0.3) 60%, transparent 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 24px;
    opacity: 0;
    transition: var(--transition-smooth);
}

.gallery-item:hover img {
    transform: scale(1.08);
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-category {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent);
    margin-bottom: 6px;
}

.gallery-item-title {
    font-size: 1.1rem;
    font-weight: 600;
}

/* 15. About Institute Section */
.about-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-visual-container {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-premium);
}

.about-img {
    width: 100%;
    height: auto;
    object-fit: cover;
    border-radius: 20px;
}

.about-badge {
    position: absolute;
    bottom: 24px;
    left: 24px;
    padding: 16px 24px;
}

.about-badge-title {
    display: block;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted-light);
}

.about-badge-val {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 2rem;
    line-height: 1;
}

.about-description {
    font-size: 1.05rem;
    color: var(--text-muted-dark);
    margin-bottom: 32px;
}

.about-tabs {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.tab-triggers {
    display: flex;
    border-bottom: 2px solid rgba(15, 23, 42, 0.06);
    gap: 24px;
}

.tab-trigger {
    background: none;
    border: none;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.02rem;
    padding-bottom: 12px;
    color: var(--text-muted-dark);
    cursor: pointer;
    position: relative;
    transition: var(--transition-fast);
}

.tab-trigger.active {
    color: var(--primary);
}

.tab-trigger::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary);
    transition: var(--transition-smooth);
}

.tab-trigger.active::after {
    width: 100%;
}

.tab-contents {
    position: relative;
}

.tab-content {
    display: none;
    animation: tabReveal 0.4s ease;
}

.tab-content.active {
    display: block;
}

@keyframes tabReveal {
    from {
        opacity: 0;
        transform: translateY(6px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.values-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.values-list li {
    font-size: 0.95rem;
    position: relative;
    padding-left: 24px;
}

.values-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-hover);
    font-weight: bold;
}

/* 16. Contact Section */
.contact-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 40px;
    margin-bottom: 60px;
}

.contact-info-panel {
    padding: 48px;
    display: flex;
    flex-direction: column;
}

.panel-title {
    font-size: 1.6rem;
    margin-bottom: 8px;
}

.panel-subtitle {
    font-size: 0.9rem;
    color: var(--text-muted-light);
    margin-bottom: 36px;
}

.contact-details-list {
    display: flex;
    flex-direction: column;
    gap: 28px;
    flex-grow: 1;
    margin-bottom: 36px;
}

.contact-detail-item {
    display: flex;
    gap: 20px;
}

.detail-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    border-radius: 8px;
    background: rgba(0, 212, 255, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(0, 212, 255, 0.15);
}

.detail-label {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted-light);
    margin-bottom: 4px;
}

.detail-value {
    font-size: 0.98rem;
    line-height: 1.5;
}

.contact-action-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.contact-form-panel {
    padding: 48px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 32px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-family: var(--font-heading);
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-muted-light);
}

.form-control {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 12px 16px;
    color: var(--white);
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 10px rgba(0, 212, 255, 0.15);
}

select.form-control option {
    background-color: var(--primary-dark);
    color: var(--white);
}

.form-feedback {
    font-size: 0.9rem;
    text-align: center;
    margin-top: 10px;
}

.form-feedback.success {
    color: #25D366;
}

.form-feedback.error {
    color: #FF4A4A;
}

.map-container {
    width: 100%;
    border-radius: 20px;
    overflow: hidden;
    border-color: rgba(255, 255, 255, 0.08);
}

.map-container iframe {
    display: block;
    filter: invert(90%) hue-rotate(180deg) brightness(95%) contrast(90%); /* Fits the dark theme aesthetic */
}

/* 17. Footer */
.footer {
    background: var(--primary-dark);
    border-top: 1px solid var(--border-color);
    padding: 80px 0 30px;
    font-size: 0.92rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.3fr 0.8fr 0.8fr 1.1fr;
    gap: 48px;
    margin-bottom: 60px;
}

.footer-brand-desc {
    color: var(--text-muted-light);
    margin-top: 16px;
    margin-bottom: 24px;
    max-width: 320px;
}

.social-links {
    display: flex;
    gap: 12px;
}

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.03);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted-light);
}

.social-links a:hover {
    color: var(--primary-dark);
    background: var(--accent);
    border-color: var(--accent);
}

.footer-col-title {
    font-size: 1.15rem;
    margin-bottom: 24px;
    color: var(--white);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: var(--text-muted-light);
}

.footer-links a:hover {
    color: var(--accent);
    padding-left: 4px;
}

.footer-contact-details {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.footer-icon {
    margin-right: 12px;
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 30px;
    text-align: center;
    color: var(--text-muted-light);
    font-size: 0.85rem;
}

/* 18. Scroll Reveal Animations classes */
.scroll-reveal {
    opacity: 0;
    transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.8s ease;
}

.fade-up {
    transform: translateY(30px);
}

.reveal-active {
    opacity: 1;
    transform: translateY(0);
}

/* 19. Responsive Media Queries */

/* Tablet Layout (max-width: 1024px) */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 60px;
        text-align: center;
    }
    
    .hero-content {
        align-items: center;
    }
    
    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    
    .stats-container {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .courses-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .why-us-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .success-showcase {
        grid-template-columns: 1fr;
        max-width: 600px;
        margin: 0 auto;
    }
    
    .demo-container {
        flex-direction: column;
        text-align: center;
        padding: 48px;
    }
    
    .gallery-masonry {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile Navigation Drawer & Breakpoints (max-width: 768px) */
@media (max-width: 768px) {
    .section-padding {
        padding: 60px 0;
    }
    
    .hero-title {
        font-size: 2.4rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
    
    .nav-actions {
        display: none; /* Hidden on mobile header, items moved to menu drawer */
    }
    
    .mobile-nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: rgba(10, 31, 68, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: center;
        gap: 28px;
        padding: 40px;
        box-shadow: -10px 0 30px rgba(0,0,0,0.2);
        transition: right 0.4s cubic-bezier(0.16, 1, 0.3, 1);
        z-index: 1000;
    }
    
    .nav-menu.open {
        right: 0;
    }
    
    .nav-actions-mobile {
        display: flex;
        flex-direction: column;
        gap: 16px;
        width: 100%;
        margin-top: 24px;
    }
    
    .mobile-nav-toggle.open .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .mobile-nav-toggle.open .bar:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-nav-toggle.open .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    .stats-container {
        grid-template-columns: 1fr;
    }
    
    .courses-grid {
        grid-template-columns: 1fr;
    }
    
    .why-us-grid {
        grid-template-columns: 1fr;
    }
    
    .gallery-masonry {
        grid-template-columns: 1fr;
    }
    
    .contact-info-panel, .contact-form-panel {
        padding: 24px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .contact-action-buttons {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .badge-ielts {
        left: 0;
    }
    .badge-gre {
        right: 0;
    }
}