/* ===== S Softtech — Design System ===== */
:root {
  --cyan: #00b4d8;
  --sky: #48cae4;
  --blue: #0077b6;
  --navy: #023e8a;
  --deep: #001845;
  --white: #ffffff;
  --light: #f0f7ff;
  --gray: #64748b;
  --gray-light: #e2e8f0;
  --shadow: 0 4px 24px rgba(2, 62, 138, 0.12);
  --shadow-lg: 0 12px 40px rgba(2, 62, 138, 0.18);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.3s ease;
  --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font);
  color: var(--deep);
  background: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

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

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  color: var(--white);
  box-shadow: 0 4px 16px rgba(0, 180, 216, 0.4);
}

.btn-primary:hover {
  box-shadow: 0 8px 24px rgba(0, 180, 216, 0.5);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid var(--white);
}

.btn-outline:hover {
  background: var(--white);
  color: var(--navy);
}

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

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: box-shadow var(--transition);
}

.header-scrolled {
  box-shadow: 0 4px 24px rgba(2, 62, 138, 0.12);
}

/* Top info bar */
.header-top {
  background: linear-gradient(90deg, var(--deep), var(--navy));
  border-bottom: 1px solid rgba(0, 180, 216, 0.25);
}

.header-top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 20px;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.85);
  gap: 12px;
  flex-wrap: wrap;
}

.header-top-inner a {
  color: var(--sky);
  font-weight: 600;
}

.header-top-inner a:hover {
  color: var(--cyan);
}

.header-tagline {
  color: var(--cyan);
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  font-size: 0.75rem;
}

/* Main header bar — white for clear logo */
.header-main {
  background: var(--white);
  border-bottom: 3px solid var(--cyan);
  position: relative;
  box-shadow: 0 2px 12px rgba(2, 62, 138, 0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 20px;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.logo img {
  height: 96px;
  width: auto;
  display: block;
  object-fit: contain;
}

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

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-links a {
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--navy);
  position: relative;
  padding: 4px 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--blue));
  transition: width var(--transition);
}

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

.nav-links a:hover::after {
  width: 100%;
}

.nav-cta {
  margin-left: 8px;
}

.nav-cta .btn {
  padding: 10px 22px;
  font-size: 0.9rem;
}

/* Hamburger */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: var(--light);
  border: 1px solid var(--gray-light);
  border-radius: 8px;
  cursor: pointer;
  padding: 10px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2.5px;
  background: var(--navy);
  border-radius: 2px;
  transition: var(--transition);
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 6px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -6px);
}

/* ===== Banner Slider ===== */
.banner-slider {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 520px;
  max-height: 800px;
  overflow: hidden;
}

.slider-track {
  position: relative;
  width: 100%;
  height: 100%;
}

.slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.8s ease, visibility 0.8s ease;
}

.slide.active {
  opacity: 1;
  visibility: visible;
  z-index: 1;
}

.slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.slide-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(0, 24, 69, 0.82) 0%,
    rgba(2, 62, 138, 0.65) 50%,
    rgba(0, 119, 182, 0.45) 100%
  );
}

.slide-content {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding-top: 120px;
  z-index: 2;
  max-width: 720px;
}

.slide-tagline {
  font-size: 0.85rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--sky);
  margin-bottom: 16px;
  font-weight: 600;
  animation: slideUp 0.6s ease 0.2s both;
}

.slide-content h1 {
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 18px;
  animation: slideUp 0.6s ease 0.35s both;
}

.slide-content h1 span {
  background: linear-gradient(90deg, var(--sky), var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.slide-content > p {
  color: rgba(255, 255, 255, 0.9);
  font-size: clamp(1rem, 2vw, 1.15rem);
  margin-bottom: 32px;
  max-width: 560px;
  line-height: 1.7;
  animation: slideUp 0.6s ease 0.5s both;
}

.slide-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  animation: slideUp 0.6s ease 0.65s both;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Slider Arrows */
.slider-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.5);
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(6px);
  color: var(--white);
  font-size: 1.2rem;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.slider-arrow:hover {
  background: rgba(0, 180, 216, 0.5);
  border-color: var(--cyan);
}

.slider-prev { left: 20px; }
.slider-next { right: 20px; }

/* Slider Dots */
.slider-dots {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  gap: 10px;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.6);
  background: transparent;
  cursor: pointer;
  padding: 0;
  transition: background var(--transition), transform var(--transition);
}

.dot.active {
  background: var(--cyan);
  border-color: var(--cyan);
  transform: scale(1.25);
}

.dot:hover {
  background: rgba(255, 255, 255, 0.5);
}

/* ===== Section Common ===== */
section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-label {
  display: inline-block;
  font-size: 0.8rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--cyan);
  font-weight: 600;
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  color: var(--navy);
  font-weight: 800;
  margin-bottom: 16px;
}

.section-header p {
  color: var(--gray);
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.05rem;
}

/* ===== About ===== */
.about {
  background: var(--light);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-text h3 {
  font-size: 1.6rem;
  color: var(--navy);
  margin-bottom: 20px;
  font-weight: 700;
}

.about-text p {
  color: var(--gray);
  margin-bottom: 16px;
  font-size: 1rem;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 28px;
}

.about-feature {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 500;
  color: var(--navy);
  font-size: 0.95rem;
}

.about-feature-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1rem;
  flex-shrink: 0;
}

.about-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--cyan);
}

.about-card h4 {
  font-size: 1.2rem;
  color: var(--navy);
  margin-bottom: 12px;
}

.about-card p {
  color: var(--gray);
  font-size: 0.95rem;
}

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

.why-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-light);
  transition: transform var(--transition), box-shadow var(--transition);
}

.why-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.why-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 1.6rem;
}

.why-card h3 {
  font-size: 1.05rem;
  color: var(--navy);
  margin-bottom: 10px;
  font-weight: 700;
}

.why-card p {
  color: var(--gray);
  font-size: 0.9rem;
}

/* ===== Stats ===== */
.stats {
  background: linear-gradient(135deg, var(--navy), var(--deep));
  padding: 60px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat-item h3 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  color: var(--cyan);
  margin-bottom: 8px;
}

.stat-item p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.95rem;
  font-weight: 500;
}

/* ===== Courses ===== */
.courses {
  background: var(--light);
}

.course-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 40px;
}

.filter-btn {
  padding: 10px 20px;
  border-radius: 50px;
  border: 2px solid var(--gray-light);
  background: var(--white);
  color: var(--navy);
  font-weight: 500;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  color: var(--white);
  border-color: transparent;
}

/* Diploma Cards */
.diploma-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 56px;
}

.diploma-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}

.diploma-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.diploma-header {
  background: linear-gradient(135deg, var(--navy), var(--blue));
  padding: 24px;
  color: var(--white);
}

.diploma-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.diploma-header span {
  font-size: 0.85rem;
  opacity: 0.85;
}

.diploma-body {
  padding: 24px;
}

.diploma-body ul li {
  padding: 8px 0;
  border-bottom: 1px solid var(--gray-light);
  color: var(--gray);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.diploma-body ul li::before {
  content: '✓';
  color: var(--cyan);
  font-weight: 700;
}

.diploma-body ul li:last-child {
  border-bottom: none;
}

.diploma-footer {
  padding: 0 24px 24px;
}

.btn-enroll {
  width: 100%;
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  color: var(--white);
  padding: 12px 20px;
  font-size: 0.9rem;
  border-radius: 50px;
  box-shadow: 0 4px 14px rgba(0, 180, 216, 0.35);
}

.btn-enroll:hover {
  box-shadow: 0 6px 20px rgba(0, 180, 216, 0.5);
}

.btn-enroll-sm {
  margin-top: 12px;
  padding: 8px 14px;
  font-size: 0.8rem;
}

/* Course Grid */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.course-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: 0 2px 12px rgba(2, 62, 138, 0.08);
  border: 1px solid var(--gray-light);
  transition: all var(--transition);
  cursor: default;
}

.course-card:hover {
  border-color: var(--cyan);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.course-card-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, rgba(0, 180, 216, 0.15), rgba(0, 119, 182, 0.15));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  margin-bottom: 12px;
}

.course-card h4 {
  font-size: 0.9rem;
  color: var(--navy);
  font-weight: 600;
  line-height: 1.4;
  flex: 1;
}

.course-card {
  display: flex;
  flex-direction: column;
}

.course-card.hidden {
  display: none;
}

/* ===== Enroll Modal ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 24, 69, 0.65);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition);
}

.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--white);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 440px;
  padding: 32px 28px 28px;
  position: relative;
  box-shadow: var(--shadow-lg);
  transform: translateY(20px);
  transition: transform var(--transition);
  max-height: 90vh;
  overflow-y: auto;
}

.modal-overlay.open .modal {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 16px;
  background: none;
  border: none;
  font-size: 1.8rem;
  color: var(--gray);
  cursor: pointer;
  line-height: 1;
  padding: 4px 8px;
}

.modal-close:hover {
  color: var(--navy);
}

.modal-header {
  margin-bottom: 24px;
  padding-right: 24px;
}

.modal-header h3 {
  color: var(--navy);
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 6px;
}

.modal-header p {
  color: var(--gray);
  font-size: 0.9rem;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 6px;
}

.form-group input {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--gray-light);
  border-radius: 10px;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--deep);
  transition: border-color var(--transition), box-shadow var(--transition);
  background: var(--white);
}

.form-group input:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0, 180, 216, 0.2);
}

.form-group input[readonly] {
  background: var(--light);
  color: var(--navy);
  font-weight: 600;
}

.btn-block {
  width: 100%;
  margin-top: 8px;
}

.form-status {
  margin-top: 12px;
  font-size: 0.875rem;
  text-align: center;
  min-height: 1.2em;
}

.form-status.success {
  color: #059669;
  font-weight: 600;
}

.form-status.error {
  color: #dc2626;
  font-weight: 600;
}

/* ===== Features Banner ===== */
.features-banner {
  background: var(--white);
  padding: 60px 0;
}

.features-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.feature-banner-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 24px;
  border-radius: var(--radius);
  background: var(--light);
}

.feature-banner-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.feature-banner-item h4 {
  color: var(--navy);
  font-size: 1rem;
  margin-bottom: 6px;
  font-weight: 700;
}

.feature-banner-item p {
  color: var(--gray);
  font-size: 0.875rem;
}

/* ===== Contact ===== */
.contact {
  background: linear-gradient(135deg, var(--deep) 0%, var(--navy) 100%);
  color: var(--white);
}

.contact .section-header h2 {
  color: var(--white);
}

.contact .section-header p {
  color: rgba(255, 255, 255, 0.75);
}

.contact .section-label {
  color: var(--sky);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-info-card {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  padding: 36px;
  backdrop-filter: blur(8px);
}

.contact-info-card h3 {
  font-size: 1.4rem;
  margin-bottom: 28px;
  font-weight: 700;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
}

.contact-item-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.contact-item-text h4 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--sky);
  margin-bottom: 4px;
  font-weight: 600;
}

.contact-item-text p,
.contact-item-text a {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1rem;
  line-height: 1.5;
}

.contact-item-text a:hover {
  color: var(--cyan);
}

.contact-map {
  border-radius: var(--radius-lg);
  overflow: hidden;
  height: 100%;
  min-height: 320px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 16px;
  padding: 32px;
  text-align: center;
}

.contact-map iframe {
  width: 100%;
  height: 100%;
  min-height: 320px;
  border: none;
  border-radius: var(--radius-lg);
}

/* ===== Footer ===== */
.footer {
  background: var(--deep);
  color: rgba(255, 255, 255, 0.7);
  padding: 48px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand img {
  height: 72px;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 320px;
}

.footer-tagline {
  margin-top: 12px;
  font-size: 0.8rem;
  letter-spacing: 2px;
  color: var(--sky);
  text-transform: uppercase;
  font-weight: 600;
}

.footer h4 {
  color: var(--white);
  font-size: 1rem;
  margin-bottom: 20px;
  font-weight: 700;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  font-size: 0.9rem;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--cyan);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
}

/* ===== WhatsApp Float ===== */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
  width: 58px;
  height: 58px;
  background: #25d366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.5);
  transition: transform var(--transition);
  font-size: 1.8rem;
}

.whatsapp-float:hover {
  transform: scale(1.1);
}

/* ===== Mobile Responsive ===== */
@media (max-width: 1024px) {
  .why-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }

  .header-top-inner {
    justify-content: center;
    font-size: 0.75rem;
    padding: 5px 16px;
  }

  .header-top-inner span:first-child,
  .header-tagline {
    display: none;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--white);
    flex-direction: column;
    padding: 90px 32px 32px;
    gap: 0;
    box-shadow: -4px 0 24px rgba(0, 0, 0, 0.15);
    transition: right var(--transition);
    z-index: 999;
    align-items: stretch;
  }

  .nav-links.open {
    right: 0;
  }

  .nav-links li {
    border-bottom: 1px solid var(--gray-light);
  }

  .nav-links a {
    display: block;
    padding: 16px 0;
    font-size: 1rem;
    color: var(--navy);
  }

  .nav-cta {
    margin-left: 0;
    margin-top: 20px;
    border-bottom: none;
  }

  .nav-cta .btn {
    width: 100%;
    justify-content: center;
  }

  .logo img {
    height: 72px;
  }

  .slide-content {
    align-items: center;
    text-align: center;
    padding-top: 120px;
  }

  .slide-content > p {
    margin-left: auto;
    margin-right: auto;
  }

  .slide-buttons {
    justify-content: center;
  }

  .slider-arrow {
    width: 38px;
    height: 38px;
    font-size: 1rem;
  }

  .slider-prev { left: 10px; }
  .slider-next { right: 10px; }

  .banner-slider {
    min-height: 480px;
    max-height: 600px;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .about-features {
    grid-template-columns: 1fr;
  }

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

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

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

  .features-row {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  section {
    padding: 60px 0;
  }
}

@media (max-width: 480px) {
  .slide-buttons {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 280px;
  }

  .course-filters {
    gap: 8px;
  }

  .filter-btn {
    padding: 8px 14px;
    font-size: 0.8rem;
  }

  .courses-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  }

  .whatsapp-float {
    bottom: 16px;
    right: 16px;
    width: 52px;
    height: 52px;
    font-size: 1.5rem;
  }
}