:root {
    /* Color Palette - Analytics Fusion Lab */
    --primary-color: #003366;
    /* Deep Logo Blue */
    --primary-light: #004c99;
    --secondary-color: #d4af37;
    /* Logo Gold */
    --secondary-hover: #b8962e;
    --text-dark: #222222;
    --text-light: #666666;
    --text-white: #ffffff;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;

    /* Typography */
    --font-primary: 'Inter', sans-serif;
    --font-heading: 'Outfit', sans-serif;

    /* Effects & Metrics - Upgraded */
    --border-radius-sm: 8px;
    --border-radius-md: 16px;
    --border-radius-lg: 24px;
    --box-shadow: 0 10px 40px rgba(0, 51, 102, 0.08);
    /* Soft blue-tinted shadow */
    --box-shadow-hover: 0 20px 50px rgba(0, 51, 102, 0.15);
    --glass-bg: rgba(255, 255, 255, 0.85);
    --glass-border: 1px solid rgba(255, 255, 255, 0.5);
    --glass-blur: blur(12px);
    --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    --gradient-secondary: linear-gradient(135deg, var(--secondary-color) 0%, var(--secondary-hover) 100%);
    --transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
}

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

body {
    font-family: var(--font-primary);
    color: var(--text-dark);
    background-color: var(--bg-light);
    line-height: 1.6;
    overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    color: var(--primary-color);
    font-weight: 700;
}

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

ul {
    list-style: none;
}

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

/* Typography Utilities */
.section-title {
    text-align: center;
    font-size: 2.8rem;
    margin-bottom: 1rem;
    position: relative;
    padding-bottom: 15px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: block;
    width: 100%;
}

.section-title-wrapper {
    text-align: center;
    /* Helper to center inline-block title */
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-secondary);
    border-radius: 4px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto 3rem;
    font-size: 1.1rem;
}

/* Layout Utilities */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-padding {
    padding: 80px 0;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 30px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.9rem;
    cursor: pointer;
    border: none;
    outline: none;
    transition: var(--transition);
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 51, 102, 0.3);
}

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

.btn-secondary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(212, 175, 55, 0.3);
}

/* Header & Navigation */
.main-header {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: var(--glass-border);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.main-header.scrolled {
    padding: 10px 0;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    font-size: 2rem;
    color: var(--secondary-color);
}

.logo-text {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--primary-color);
    letter-spacing: -0.5px;
}

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

.nav-item {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary-color);
    position: relative;
    padding: 5px 0;
}

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

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

.nav-item:hover {
    color: var(--secondary-color);
}

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    color: var(--primary-color);
    cursor: pointer;
}

/* Page Header Banner */
.page-header {
    background: linear-gradient(135deg, rgba(0,51,102,0.95) 0%, rgba(0,37,77,0.95) 100%);
    padding: 100px 0 70px;
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 60% 50%, rgba(212,175,55,0.12) 0%, transparent 70%);
    pointer-events: none;
}

.page-header h1 {
    color: white;
    font-size: 3rem;
    margin-bottom: 15px;
    position: relative;
}

.page-header p {
    color: rgba(255,255,255,0.85);
    font-size: 1.15rem;
    position: relative;
}

.bg-light {
    background-color: var(--bg-light) !important;
}

/* Hero Section */
.hero {
    position: relative;
    height: 90vh;
    min-height: 600px;
    background: linear-gradient(135deg, #003366 0%, #004c99 60%, #00254d 100%);
    overflow: hidden;
}

.hero-slide {
    display: flex;
    align-items: center;
    height: 100%;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0,51,102,0.97) 0%, rgba(0,76,153,0.7) 60%, rgba(0,37,77,0.5) 100%);
    z-index: 1;
}

.hero-bg-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
}

/* Split layout: text left, image right */
.hero-split-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 50px;
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 30px;
    height: 100%;
}

.hero-content {
    position: relative;
    z-index: 2;
    color: var(--text-white);
    flex: 1;
    max-width: 520px;
}

/* Foreground image on the right */
.hero-image-wrap {
    flex: 0 0 44%;
    max-width: 460px;
    height: 70vh;
    max-height: 520px;
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
}

.hero-fg-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
    border-radius: 20px;
    box-shadow: 0 25px 70px rgba(0, 0, 0, 0.55);
    border: 3px solid rgba(212, 175, 55, 0.5);
}

@media (max-width: 900px) {
    .hero-image-wrap {
        display: none;
    }
    .hero-split-container {
        justify-content: center;
    }
    .hero-content {
        max-width: 100%;
        text-align: center;
    }
    .hero-actions {
        justify-content: center;
    }
}

.hero-badge {
    display: inline-block;
    background-color: rgba(212, 175, 55, 0.15);
    backdrop-filter: blur(10px);
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 20px;
    border: 1.5px solid rgba(212, 175, 55, 0.7);
    color: var(--secondary-color);
}

.hero-title {
    font-size: 2.8rem;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--text-white);
}

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

.hero-desc {
    font-size: 1.25rem;
    margin-bottom: 40px;
    opacity: 0.9;
    max-width: 600px;
}

.hero-actions {
    display: flex;
    gap: 20px;
}

/* Swiper custom styling */
.swiper-pagination-bullet {
    background: rgba(255, 255, 255, 0.5);
    opacity: 1;
    width: 10px;
    height: 10px;
}

.swiper-pagination-bullet-active {
    background: var(--secondary-color);
    width: 25px;
    border-radius: 5px;
}

/* Services / Courses Section */
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 50px;
}

.feature-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: var(--glass-border);
    border-radius: var(--border-radius-md);
    padding: 40px 30px;
    text-align: center;
    box-shadow: var(--box-shadow);
    transition: transform 0.5s cubic-bezier(0.165, 0.84, 0.44, 1), box-shadow 0.5s ease;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity 0.5s ease;
    z-index: -1;
}

.feature-card:hover {
    transform: translateY(-15px) scale(1.02);
    box-shadow: var(--box-shadow-hover);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-card:hover .feature-title,
.feature-card:hover .feature-desc,
.feature-card:hover .feature-link {
    color: var(--text-white);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    color: var(--text-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin: 0 auto 25px;
    transition: var(--transition);
    box-shadow: 0 8px 20px rgba(0, 51, 102, 0.2);
}

.feature-card:hover .feature-icon {
    background: transparent;
}

.feature-card:hover .feature-icon i {
    color: var(--text-white);
}

.feature-title {
    font-size: 1.4rem;
    margin-bottom: 15px;
}

.feature-desc {
    color: var(--text-light);
    margin-bottom: 25px;
}

.feature-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    font-weight: 600;
}

.feature-link i {
    transition: var(--transition);
}

.feature-card:hover .feature-link i {
    transform: translateX(5px);
    color: var(--secondary-color);
}

/* Weltec Style Features Grid */
.weltec-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 60px 30px;
    margin-top: 70px;
    margin-bottom: 20px;
}

.weltec-feature-card {
    background: var(--bg-white);
    border-radius: 12px;
    box-shadow: 0 10px 60px rgba(0, 0, 0, 0.06);
    padding: 50px 30px 30px;
    text-align: center;
    position: relative;
    transition: var(--transition);
}

.weltec-feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 25px 80px rgba(0, 51, 102, 0.15);
}

.weltec-icon-box {
    background: var(--primary-color);
    width: 70px;
    height: 70px;
    transform: rotate(45deg);
    position: absolute;
    top: -35px;
    left: 50%;
    margin-left: -35px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px; /* Slight rounding for a premium feel */
    box-shadow: 0 10px 30px rgba(0, 51, 102, 0.2);
    transition: var(--transition);
}

.weltec-feature-card:hover .weltec-icon-box {
    background: var(--secondary-color);
    box-shadow: 0 12px 35px rgba(212, 175, 55, 0.4);
}

.weltec-icon-box i {
    transform: rotate(-45deg);
    color: var(--text-white);
    font-size: 1.6rem;
}

.weltec-feature-card h3 {
    color: var(--primary-color);
    font-size: 1.35rem;
    margin-bottom: 12px;
}

.weltec-feature-card p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 0;
}

/* WhatsApp CTA Section */
.whatsapp-cta-section {
    position: relative;
    padding: 80px 0;
    background: linear-gradient(135deg, #003366 0%, #00254d 100%);
    overflow: hidden;
}

.whatsapp-cta-bg-pattern {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 20% 50%, rgba(37,211,102,0.08) 0%, transparent 50%),
                      radial-gradient(circle at 80% 50%, rgba(212,175,55,0.08) 0%, transparent 50%);
    pointer-events: none;
}

.whatsapp-cta-inner {
    display: flex;
    align-items: center;
    gap: 60px;
    flex-wrap: wrap;
}

.whatsapp-cta-left {
    display: flex;
    align-items: flex-start;
    gap: 25px;
    flex: 1;
    min-width: 280px;
}

.wa-icon-wrap {
    width: 80px;
    height: 80px;
    min-width: 80px;
    background: linear-gradient(135deg, #25d366, #128c7e);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.4rem;
    color: white;
    box-shadow: 0 10px 30px rgba(37,211,102,0.4);
    animation: waPulse 2s infinite;
}

@keyframes waPulse {
    0%, 100% { box-shadow: 0 10px 30px rgba(37,211,102,0.4); }
    50%       { box-shadow: 0 10px 50px rgba(37,211,102,0.7); }
}

.wa-text h2 {
    font-size: 2rem;
    color: white;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 12px;
}

.wa-text h2 span {
    color: #25d366;
}

.wa-text p {
    color: rgba(255,255,255,0.75);
    font-size: 1rem;
    line-height: 1.7;
}

.whatsapp-cta-right {
    flex: 1;
    min-width: 280px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
}

.wa-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px 24px;
    width: 100%;
}

.wa-features li {
    color: rgba(255,255,255,0.85);
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.wa-features li i {
    color: #25d366;
    font-size: 1rem;
    flex-shrink: 0;
}

.wa-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: linear-gradient(135deg, #25d366, #128c7e);
    color: white;
    font-size: 1.05rem;
    font-weight: 700;
    padding: 16px 36px;
    border-radius: 50px;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 8px 25px rgba(37,211,102,0.35);
    letter-spacing: 0.3px;
}

.wa-btn i {
    font-size: 1.4rem;
}

.wa-btn:hover {
    transform: translateY(-3px) scale(1.03);
    box-shadow: 0 15px 40px rgba(37,211,102,0.5);
    background: linear-gradient(135deg, #2ee872, #25d366);
}

.wa-note {
    color: rgba(255,255,255,0.5);
    font-size: 0.82rem;
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: -10px;
}

.wa-note i {
    color: var(--secondary-color);
}

@media (max-width: 768px) {
    .whatsapp-cta-inner {
        flex-direction: column;
        gap: 36px;
    }
    .wa-features {
        grid-template-columns: 1fr;
    }
    .wa-text h2 {
        font-size: 1.6rem;
    }
    .wa-btn {
        width: 100%;
        justify-content: center;
    }
}

/* Footer */
.main-footer {
    background-color: var(--primary-color);
    color: var(--text-white);
    padding: 80px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 50px;
}

.footer-widget h4 {
    color: var(--text-white);
    font-size: 1.3rem;
    margin-bottom: 25px;
    position: relative;
    padding-bottom: 10px;
}

.footer-widget h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background-color: var(--secondary-color);
}

.footer-desc {
    color: rgba(255, 255, 255, 0.7);
    margin-top: 15px;
    margin-bottom: 20px;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
}

.social-links a:hover {
    background-color: var(--secondary-color);
    transform: translateY(-3px);
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.footer-links a i {
    font-size: 0.8rem;
    color: var(--secondary-color);
}

.footer-links a:hover {
    color: var(--secondary-color);
    padding-left: 5px;
}

.contact-info li {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
    color: rgba(255, 255, 255, 0.7);
}

.contact-info i {
    color: var(--secondary-color);
    font-size: 1.2rem;
    margin-top: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

/* 10s WhatsApp Pop-up Styles */
.wa-popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 51, 102, 0.6);
    backdrop-filter: blur(5px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.5s ease;
}

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

.wa-popup-box {
    background: white;
    width: 90%;
    max-width: 400px;
    border-radius: 16px;
    box-shadow: 0 25px 50px rgba(0,0,0,0.25);
    overflow: hidden;
    position: relative;
    transform: translateY(50px);
    transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.wa-popup-overlay.active .wa-popup-box {
    transform: translateY(0);
}

.wa-popup-close {
    position: absolute;
    top: 15px;
    right: 15px;
    background: rgba(255,255,255,0.2);
    border: none;
    color: white;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.2rem;
    transition: background 0.3s;
    z-index: 10;
}

.wa-popup-close:hover {
    background: rgba(255,255,255,0.4);
}

.wa-popup-header {
    background: var(--primary-color);
    padding: 30px 20px 20px;
    text-align: center;
    color: white;
}

.wa-popup-header i {
    font-size: 3rem;
    color: #25d366;
    margin-bottom: 15px;
}

.wa-popup-header h3 {
    margin: 0;
    color: white;
    font-size: 1.5rem;
}

.wa-popup-body {
    padding: 30px 20px;
    text-align: center;
}

.wa-popup-body p {
    color: var(--text-light);
    margin-bottom: 25px;
    font-size: 1.05rem;
}

.wa-popup-body .btn:hover {
    background-color: #128c7e !important;
    border-color: #128c7e !important;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* animate-up - visible by default, animates when JS triggers */
.animate-up {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.delay-1 { transition-delay: 0.2s; }
.delay-2 { transition-delay: 0.4s; }
.delay-3 { transition-delay: 0.6s; }

/* =============================================
   TESTIMONIALS SLIDER
   ============================================= */
.testimonial-card {
    background: white;
    border-radius: var(--border-radius-md);
    padding: 40px;
    height: 100%;
    margin: 15px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.testimonial-stars {
    color: var(--secondary-color);
    margin-bottom: 20px;
    font-size: 1.1rem;
    letter-spacing: 2px;
}

.testimonial-text {
    font-size: 1.1rem;
    color: var(--text-dark);
    font-style: italic;
    line-height: 1.8;
    margin-bottom: 30px;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: rgba(0, 51, 102, 0.1);
    color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.testimonial-author h4 {
    color: var(--primary-color);
    margin: 0 0 5px 0;
    font-size: 1.1rem;
}

.testimonial-author span {
    color: var(--text-light);
    font-size: 0.9rem;
    font-weight: 500;
}

.testimonial-pagination .swiper-pagination-bullet {
    background: rgba(255,255,255,0.5);
    opacity: 1;
    width: 10px;
    height: 10px;
    margin: 0 6px !important;
}

.testimonial-pagination .swiper-pagination-bullet-active {
    background: var(--secondary-color);
    width: 25px;
    border-radius: 5px;
}

/* =============================================
   RESPONSIVE MEDIA QUERIES - COMPREHENSIVE
   ============================================= */

/* Tablet: max 991px */
@media (max-width: 991px) {
    .hero-title { font-size: 2.6rem; }

    .features-grid { grid-template-columns: repeat(2, 1fr); }

    .hero-split-container {
        gap: 30px;
        padding: 0 20px;
    }

    .hero-image-wrap {
        flex: 0 0 42%;
        max-width: 380px;
    }

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--bg-white);
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        gap: 15px;
        clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
        transition: clip-path 0.4s ease;
        z-index: 999;
    }

    .nav-menu.active { clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%); }
    .mobile-menu-btn { display: block; }

    /* About page image on tablet */
    .about-flex { flex-direction: column; }
}

/* Mobile: max 768px */
@media (max-width: 768px) {

    /* --- Header --- */
    .nav-container { padding: 0 16px; }
    .nav-logo img { height: 55px !important; }
    .nav-logo span { font-size: 1rem; }

    /* --- Page Header Banner --- */
    .page-header { padding: 70px 0 50px; }
    .page-header h1 { font-size: 2rem; }
    .page-header p { font-size: 1rem; }

    /* --- Hero --- */
    .hero { height: auto; min-height: auto; padding: 80px 0 50px; }
    .hero-slide { height: auto; }
    .hero-split-container {
        flex-direction: column;
        gap: 30px;
        padding: 0 20px;
        align-items: flex-start;
    }
    .hero-content { max-width: 100%; }
    .hero-image-wrap { display: none; }   /* hide image on mobile for clean look */
    .hero-title { font-size: 2.2rem; line-height: 1.25; }
    .hero-badge { font-size: 0.82rem; padding: 6px 14px; }
    .hero-subtitle { font-size: 0.95rem; }
    .hero-actions { flex-direction: column; gap: 12px; }
    .hero-actions .btn { width: 100%; text-align: center; }

    /* Slider dots */
    .slider-dots { bottom: 12px; }
    .dot { width: 8px; height: 8px; }

    /* --- Section commons --- */
    .section-padding { padding: 60px 0; }
    .section-title { font-size: 2rem; }
    .section-subtitle { font-size: 0.95rem; padding: 0 10px; }
    .container { padding: 0 16px; }

    /* --- Courses grid: 1 column on mobile --- */
    .features-grid { grid-template-columns: 1fr; gap: 20px; }

    /* --- Feature cards --- */
    .feature-card { padding: 28px 22px; }
    .feature-icon { width: 60px; height: 60px; font-size: 1.5rem; margin-bottom: 16px; }

    /* --- Why Choose Us section --- */
    .why-choose-section .container > div {
        flex-direction: column !important;
    }
    .why-choose-section .container > div > div {
        min-width: 100% !important;
    }

    /* --- WhatsApp CTA --- */
    .whatsapp-cta-section { padding: 50px 0; }
    .whatsapp-cta-inner { flex-direction: column; gap: 32px; }
    .whatsapp-cta-left { flex-direction: column; gap: 16px; align-items: flex-start; }
    .wa-icon-wrap { width: 65px; height: 65px; font-size: 2rem; }
    .wa-text h2 { font-size: 1.5rem; }
    .wa-text p { font-size: 0.9rem; }
    .wa-features { grid-template-columns: 1fr; gap: 10px; }
    .wa-features li { font-size: 0.88rem; }
    .wa-btn { width: 100%; justify-content: center; font-size: 0.95rem; padding: 14px 20px; }
    .whatsapp-cta-right { width: 100%; }

    /* --- Footer --- */
    .footer-grid { grid-template-columns: 1fr; gap: 30px; }
    .main-footer { padding: 50px 0 20px; }
    .footer-contact-list li { font-size: 0.9rem; }

    /* --- About page gap fix --- */
    .about-section { padding: 40px 0; }
    .about-section > .container > div { flex-direction: column !important; gap: 30px !important; }
    .about-section > .container > div > div { min-width: 100% !important; }

    /* --- Contact form --- */
    .contact-form-grid { grid-template-columns: 1fr !important; }
    .contact-flex { flex-direction: column !important; }
    .contact-flex > div { min-width: 100% !important; }
}

/* Very small: max 480px */
@media (max-width: 480px) {
    .hero-title { font-size: 1.85rem; }
    .section-title { font-size: 1.7rem; }
    .btn { padding: 12px 22px; font-size: 0.9rem; }
    .page-header h1 { font-size: 1.7rem; }
    .nav-logo span { display: none; }   /* show icon only on very small screens */
    .nav-logo img { height: 45px !important; }
}