/* ===========================
   SCHOLRHUB - Main Stylesheet
   =========================== */

@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;600;700;800;900&family=Poppins:wght@300;400;500;600;700;800&display=swap');

:root {
  --primary: #2BBCD4;
  --primary-dark: #1a9ab0;
  --primary-light: #e0f7fa;
  --accent: #0d7a8e;
  --dark: #0d1b2a;
  --dark2: #1a2d3e;
  --text: #2d3a45;
  --text-light: #6b7c8d;
  --white: #ffffff;
  --light-bg: #f5fbfd;
  --border: #d0edf3;
  --shadow: 0 8px 32px rgba(43,188,212,0.12);
  --shadow-lg: 0 20px 60px rgba(13,27,42,0.15);
  --radius: 16px;
  --radius-sm: 8px;
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Poppins', sans-serif;
  color: var(--text);
  background: var(--white);
  overflow-x: hidden;
  font-size: 15px;
  line-height: 1.7;
}

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

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

ul { list-style: none; }

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

/* =========== NAVBAR =========== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 14px 0;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 20px rgba(43,188,212,0.10);
  transition: var(--transition);
}

.navbar.scrolled {
  padding: 10px 0;
  box-shadow: 0 4px 30px rgba(43,188,212,0.18);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav-logo img {
  height: 44px;
  width: auto;
  display: block;
}

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

.nav-links a {
  font-weight: 600;
  font-size: 14px;
  color: var(--text);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0;
  width: 0; height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: width 0.3s;
}

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

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

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  white-space: nowrap;
}

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

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

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

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(43,188,212,0.35);
}

.btn-white {
  background: var(--white);
  color: var(--primary);
  font-weight: 700;
}

.btn-white:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

/* =========== HERO SLIDER =========== */
.hero {
  min-height: 100vh;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  padding-top: 80px;
}

.hero-slider {
  position: relative;
  width: 100%;
  min-height: 100vh;
}

.hero-slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  opacity: 0;
  transition: opacity 0.8s ease;
  pointer-events: none;
}

.hero-slide.active {
  opacity: 1;
  pointer-events: auto;
  position: relative;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: linear-gradient(135deg, #e0f7fa 0%, #f5fbfd 50%, #b2ebf2 100%);
}

.hero-bg::before {
  content: '';
  position: absolute;
  top: -100px; right: -100px;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(43,188,212,0.18) 0%, transparent 70%);
}

.hero-bg::after {
  content: '';
  position: absolute;
  bottom: -80px; left: -80px;
  width: 400px; height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(43,188,212,0.10) 0%, transparent 70%);
}

.hero-content-wrap {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  padding: 80px 0;
  min-height: 100vh;
}

.hero-text .tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary-dark);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 50px;
  margin-bottom: 20px;
}

.hero-text h1 {
  font-family: 'Nunito', sans-serif;
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  font-weight: 900;
  color: var(--dark);
  line-height: 1.18;
  margin-bottom: 20px;
}

.hero-text h1 span {
  color: var(--primary);
}

.hero-text p {
  font-size: 16px;
  color: var(--text-light);
  margin-bottom: 36px;
  max-width: 480px;
  line-height: 1.8;
}

.hero-cta {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}

.hero-image {
  position: relative;
}

.hero-image img {
  width: 100%;
  max-width: 540px;
  border-radius: var(--radius);
  filter: drop-shadow(0 20px 60px rgba(43,188,212,0.22));
  animation: float 4s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-16px); }
}

.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 40px;
  flex-wrap: wrap;
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 12px;
}

.stat-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
}

.stat-icon svg {
  width: 24px; height: 24px;
  color: var(--primary);
}

.stat-info strong {
  display: block;
  font-size: 20px;
  font-weight: 800;
  color: var(--dark);
  line-height: 1;
}

.stat-info span {
  font-size: 12px;
  color: var(--text-light);
}

/* Slider dots */
.slider-dots {
  position: absolute;
  bottom: 32px; left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 10;
}

.slider-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: rgba(43,188,212,0.3);
  cursor: pointer;
  border: none;
  transition: var(--transition);
}

.slider-dot.active {
  background: var(--primary);
  width: 28px;
  border-radius: 5px;
}

/* =========== COUNTERS =========== */
.counters-section {
  background: var(--dark);
  padding: 60px 0;
}

.counters-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  text-align: center;
}

.counter-item .num {
  font-family: 'Nunito', sans-serif;
  font-size: 3rem;
  font-weight: 900;
  color: var(--primary);
  display: block;
  line-height: 1;
  margin-bottom: 6px;
}

.counter-item .label {
  color: rgba(255,255,255,0.7);
  font-size: 14px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

/* =========== ABOUT =========== */
.section {
  padding: 100px 0;
}

.section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--primary);
  background: var(--primary-light);
  padding: 6px 16px;
  border-radius: 50px;
  margin-bottom: 16px;
}

.section-title {
  font-family: 'Nunito', sans-serif;
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 900;
  color: var(--dark);
  line-height: 1.25;
  margin-bottom: 20px;
}

.section-title span { color: var(--primary); }

.section-desc {
  font-size: 15px;
  color: var(--text-light);
  max-width: 600px;
  line-height: 1.9;
  margin-bottom: 32px;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-image {
  position: relative;
}

.about-image img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}

.about-image .badge {
  position: absolute;
  bottom: -20px; right: -20px;
  background: var(--primary);
  color: var(--white);
  padding: 16px 24px;
  border-radius: var(--radius);
  font-weight: 800;
  font-size: 14px;
  box-shadow: 0 8px 32px rgba(43,188,212,0.4);
}

.app-badges {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 32px;
}

.app-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--dark);
  color: var(--white);
  padding: 10px 20px;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
}

.app-badge:hover {
  background: var(--primary);
  transform: translateY(-2px);
}

.app-badge .app-badge-icon {
  font-size: 20px;
}

/* =========== BENEFITS =========== */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 60px;
}

.benefit-card {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
}

.benefit-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
  transform: translateY(-6px);
}

.benefit-icon {
  width: 64px; height: 64px;
  border-radius: 50%;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 28px;
}

.benefit-card h4 {
  font-weight: 700;
  font-size: 15px;
  color: var(--dark);
  margin-bottom: 10px;
}

.benefit-card p {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.7;
}

/* =========== USER TABS =========== */
.tabs-section {
  background: var(--light-bg);
  padding: 100px 0;
}

.tabs-nav {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 48px;
  background: var(--white);
  padding: 8px;
  border-radius: 60px;
  width: fit-content;
  box-shadow: 0 2px 16px rgba(0,0,0,0.07);
}

.tab-btn {
  padding: 10px 24px;
  border-radius: 50px;
  border: none;
  background: transparent;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-light);
  cursor: pointer;
  transition: var(--transition);
  font-family: 'Poppins', sans-serif;
}

.tab-btn:hover { color: var(--primary); }

.tab-btn.active {
  background: var(--primary);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(43,188,212,0.35);
}

.tab-pane { display: none; }
.tab-pane.active { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }

.tab-content h3 {
  font-family: 'Nunito', sans-serif;
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 16px;
}

.tab-content p {
  color: var(--text-light);
  margin-bottom: 28px;
  line-height: 1.8;
}

.feature-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}

.feature-item::before {
  content: '✓';
  width: 22px; height: 22px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 800;
  flex-shrink: 0;
}

.tab-image img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}

/* =========== FEATURES CARDS =========== */
.features-cards {
  padding: 100px 0;
  background: var(--white);
}

.features-header {
  text-align: center;
  margin-bottom: 60px;
}

.features-header .section-desc {
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--primary-dark));
  transform: scaleX(0);
  transition: transform 0.3s;
}

.feature-card:hover::before { transform: scaleX(1); }

.feature-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}

.feature-card-icon {
  font-size: 36px;
  margin-bottom: 16px;
  display: block;
}

.feature-card h3 {
  font-weight: 700;
  font-size: 16px;
  color: var(--dark);
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.7;
}

/* =========== WHY SCHOLRHUB =========== */
.why-section {
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark2) 100%);
  padding: 100px 0;
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.why-section::before {
  content: '';
  position: absolute;
  top: -200px; right: -200px;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(43,188,212,0.12) 0%, transparent 70%);
}

.why-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.why-text .section-tag {
  background: rgba(43,188,212,0.2);
  color: var(--primary);
}

.why-text .section-title { color: var(--white); }
.why-text .section-desc { color: rgba(255,255,255,0.65); }

.why-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 36px;
}

.why-stat {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-sm);
  padding: 20px;
  text-align: center;
}

.why-stat .num {
  font-family: 'Nunito', sans-serif;
  font-size: 2rem;
  font-weight: 900;
  color: var(--primary);
  display: block;
  line-height: 1;
  margin-bottom: 6px;
}

.why-stat .label {
  font-size: 12px;
  color: rgba(255,255,255,0.6);
}

.why-features {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.why-feature {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: rgba(255,255,255,0.85);
}

.why-feature-icon {
  width: 32px; height: 32px;
  background: rgba(43,188,212,0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 14px;
  flex-shrink: 0;
}

.ratings-wrap {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.rating-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.rating-logo {
  font-size: 32px;
  flex-shrink: 0;
}

.rating-info strong {
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--primary);
  display: block;
  line-height: 1;
}

.rating-info span {
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  line-height: 1.5;
  display: block;
  margin-top: 4px;
}

.stars { color: #fbbf24; font-size: 16px; }

/* =========== TESTIMONIALS =========== */
.testimonials-section {
  background: var(--light-bg);
  padding: 100px 0;
}

.testimonials-header { text-align: center; margin-bottom: 60px; }

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px;
  border: 1.5px solid var(--border);
  transition: var(--transition);
  position: relative;
}

.testimonial-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}

.quote-icon {
  font-size: 48px;
  color: var(--primary-light);
  line-height: 1;
  font-family: Georgia, serif;
  margin-bottom: 8px;
  display: block;
}

.testimonial-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 24px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 14px;
  border-top: 1px solid var(--border);
  padding-top: 20px;
}

.author-avatar {
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.author-info strong {
  display: block;
  font-size: 14px;
  font-weight: 700;
  color: var(--dark);
}

.author-info span {
  font-size: 12px;
  color: var(--text-light);
}

/* =========== DOWNLOAD =========== */
.download-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  padding: 80px 0;
  text-align: center;
  color: var(--white);
}

.download-section h2 {
  font-family: 'Nunito', sans-serif;
  font-size: 2.4rem;
  font-weight: 900;
  margin-bottom: 16px;
}

.download-section p {
  font-size: 16px;
  opacity: 0.85;
  max-width: 600px;
  margin: 0 auto 36px;
}

.download-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.dl-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: rgba(255,255,255,0.15);
  border: 2px solid rgba(255,255,255,0.3);
  color: var(--white);
  padding: 14px 28px;
  border-radius: 14px;
  cursor: pointer;
  transition: var(--transition);
  font-family: 'Poppins', sans-serif;
}

.dl-btn:hover {
  background: var(--white);
  color: var(--primary);
  border-color: var(--white);
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.15);
}

.dl-btn-icon { font-size: 26px; }

.dl-btn-text { text-align: left; }
.dl-btn-text small { display: block; font-size: 11px; opacity: 0.8; }
.dl-btn-text strong { font-size: 15px; font-weight: 700; }

/* =========== FAQ =========== */
.faq-section {
  padding: 100px 0;
  background: var(--white);
}

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

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

.faq-item {
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.open {
  border-color: var(--primary);
  box-shadow: 0 4px 20px rgba(43,188,212,0.12);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  cursor: pointer;
  font-weight: 600;
  font-size: 14px;
  color: var(--dark);
  gap: 16px;
  user-select: none;
}

.faq-toggle {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
  font-weight: 700;
  transition: var(--transition);
}

.faq-item.open .faq-toggle {
  background: var(--primary);
  color: var(--white);
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 20px;
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.8;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.open .faq-answer {
  padding: 0 20px 18px;
  max-height: 300px;
}

/* =========== NEWSLETTER =========== */
.newsletter-section {
  background: var(--light-bg);
  padding: 80px 0;
  text-align: center;
}

.newsletter-section h2 {
  font-family: 'Nunito', sans-serif;
  font-size: 2rem;
  font-weight: 900;
  color: var(--dark);
  margin-bottom: 12px;
}

.newsletter-section p {
  color: var(--text-light);
  max-width: 520px;
  margin: 0 auto 36px;
  line-height: 1.8;
}

.newsletter-form {
  display: flex;
  gap: 12px;
  max-width: 480px;
  margin: 0 auto;
}

.newsletter-form input {
  flex: 1;
  padding: 14px 20px;
  border: 1.5px solid var(--border);
  border-radius: 50px;
  font-size: 14px;
  font-family: 'Poppins', sans-serif;
  outline: none;
  transition: var(--transition);
}

.newsletter-form input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(43,188,212,0.15);
}

/* =========== FOOTER =========== */
.footer {
  background: var(--dark);
  color: rgba(255,255,255,0.75);
  padding: 80px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  padding-bottom: 60px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  margin: 20px 0 24px;
  max-width: 280px;
}

.footer-logo img { height: 40px; filter: brightness(0) invert(1); }

.social-links {
  display: flex;
  gap: 10px;
}

.social-link {
  width: 36px; height: 36px;
  border-radius: 8px;
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: var(--transition);
  cursor: pointer;
}

.social-link:hover {
  background: var(--primary);
  transform: translateY(-2px);
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  transition: var(--transition);
}

.footer-links a:hover { color: var(--primary); padding-left: 6px; }

.contact-item {
  display: flex;
  gap: 12px;
  margin-bottom: 14px;
  font-size: 13px;
}

.contact-item-icon { font-size: 16px; margin-top: 2px; flex-shrink: 0; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 24px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}

/* =========== CLIENTS LOGOS =========== */
.clients-section {
  padding: 60px 0;
  overflow: hidden;
  background: var(--white);
}

.clients-track {
  display: flex;
  gap: 48px;
  animation: scrollTrack 25s linear infinite;
  width: max-content;
}

.clients-track:hover { animation-play-state: paused; }

.client-logo {
  width: 80px; height: 50px;
  background: var(--light-bg);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  color: var(--text-light);
  text-align: center;
  flex-shrink: 0;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.client-logo:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
}

@keyframes scrollTrack {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* =========== RESPONSIVE =========== */
@media (max-width: 1024px) {
  .hero-content-wrap,
  .about-grid,
  .why-grid,
  .faq-grid { grid-template-columns: 1fr; gap: 40px; }

  .hero-image { display: none; }
  .benefits-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .testimonials-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links, .nav-actions { display: none; }
  .hamburger { display: flex; }
  .counters-grid { grid-template-columns: 1fr; gap: 24px; }
  .benefits-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .tab-pane.active { grid-template-columns: 1fr; }
  .feature-list { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .why-stats { grid-template-columns: 1fr 1fr; }
  .newsletter-form { flex-direction: column; }
  .newsletter-form input { border-radius: 12px; }
  .newsletter-form .btn { border-radius: 12px; }
  .hero-stats { gap: 20px; }
  .hero-text h1 { font-size: 2rem; }
}

/* =========== MOBILE NAV =========== */
.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(13,27,42,0.95);
  backdrop-filter: blur(12px);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
}

.mobile-nav.open { display: flex; }

.mobile-nav a {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--white);
}

.mobile-nav a:hover { color: var(--primary); }

.mobile-nav-close {
  position: absolute;
  top: 24px; right: 24px;
  background: none;
  border: none;
  color: var(--white);
  font-size: 28px;
  cursor: pointer;
}

/* =========== ANIMATIONS =========== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}