/* ============================================
   Express Engineering — Premium Navy Theme
   Modern, vibrant, professional redesign
   ============================================ */

/* ---------- Global Enhancements ---------- */
body {
  background: var(--color-bg);
  background-image: var(--gradient-mesh);
  background-attachment: fixed;
}

::selection {
  background: rgba(59, 130, 246, 0.25);
  color: var(--color-navy-900);
}

/* ---------- Premium Buttons ---------- */
.btn--primary {
  background: var(--gradient-primary-vivid);
  background-size: 200% 200%;
  box-shadow: 0 4px 20px rgba(37, 99, 235, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn--primary:hover {
  background-position: 100% 0;
  box-shadow: var(--shadow-glow), 0 8px 32px rgba(37, 99, 235, 0.45);
  transform: translateY(-3px);
}

.btn--outline {
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-color: rgba(255, 255, 255, 0.25);
  color: var(--color-white);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.hero .btn--outline {
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.3);
}

.hero .btn--outline:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--color-accent);
  color: var(--color-white);
  box-shadow: 0 8px 24px rgba(56, 189, 248, 0.2);
}

.section .btn--outline,
.contact .btn--outline,
.modal .btn--outline {
  background: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-gray);
}

.section .btn--outline:hover,
.contact .btn--outline:hover {
  border-color: var(--color-secondary);
  color: var(--color-secondary);
}

/* ---------- Header — White bar with original logo ---------- */
.header {
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  box-shadow: 0 4px 24px rgba(10, 22, 40, 0.08);
  border-bottom: 1px solid rgba(203, 213, 225, 0.5);
}

.header .nav__logo img {
  filter: none;
}

.header--scrolled {
  background: rgba(255, 255, 255, 0.98);
}

.btn--nav {
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
}

/* ---------- Hero — Dark premium ---------- */
.hero {
  background: var(--gradient-hero);
  color: var(--color-white);
}

.hero__mesh {
  position: absolute;
  inset: 0;
  background: var(--gradient-mesh);
  opacity: 0.9;
}

.hero__grid {
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 10%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 10%, transparent 75%);
}

.hero__gradient--1 {
  width: 700px;
  height: 700px;
  top: -15%;
  right: -8%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.35) 0%, transparent 65%);
  opacity: 0.7;
}

.hero__gradient--2 {
  width: 550px;
  height: 550px;
  bottom: -20%;
  left: -12%;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.25) 0%, transparent 65%);
  opacity: 0.6;
}

.hero__gradient--3 {
  width: 400px;
  height: 400px;
  top: 40%;
  left: 35%;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.12) 0%, transparent 70%);
  opacity: 0.8;
  animation: gradientPulse 10s ease-in-out infinite;
  animation-delay: 2s;
}

.hero__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(1px);
  pointer-events: none;
}

.hero__orb--1 {
  width: 320px;
  height: 320px;
  top: 15%;
  right: 20%;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.15) 0%, transparent 70%);
  border: 1px solid rgba(56, 189, 248, 0.1);
  animation: orbFloat 12s ease-in-out infinite;
}

.hero__orb--2 {
  width: 200px;
  height: 200px;
  bottom: 20%;
  left: 10%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.12) 0%, transparent 70%);
  border: 1px solid rgba(59, 130, 246, 0.08);
  animation: orbFloat 9s ease-in-out infinite reverse;
}

.hero__shape {
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(4px);
}

.hero__badge {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--color-accent);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

.hero__badge-dot {
  background: var(--color-accent-warm);
  box-shadow: 0 0 12px rgba(245, 158, 11, 0.6);
}

.hero__title {
  color: var(--color-white);
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.2);
}

.hero__title-highlight {
  background: #60A5FA;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero__subtitle {
  color: rgba(255, 255, 255, 0.72);
}

.hero__trust-item {
  padding: 0.625rem 0.875rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--border-radius);
  color: rgba(255, 255, 255, 0.88);
}

.hero__trust-icon {
  color: var(--color-accent-warm);
}

.hero__visual-glow {
  opacity: 0.35;
  filter: blur(80px);
}

.hero__slider-viewport {
  position: relative;
  border-top: none;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(255, 255, 255, 0.08);
  background: rgba(8, 15, 30, 0.95);
}

.hero__slider-viewport::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-secondary), var(--color-accent), var(--color-accent-warm));
  z-index: 4;
  border-radius: var(--border-radius-xl) var(--border-radius-xl) 0 0;
}

.hero__slider-dot.is-active {
  background: var(--gradient-gold);
}

/* ---------- Section Headers ---------- */
.section__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 1rem;
  background: var(--gradient-soft);
  border: 1px solid rgba(59, 130, 246, 0.15);
  border-radius: 100px;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
}

.section__eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--color-secondary);
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(59, 130, 246, 0.5);
}

.section__title {
  background: linear-gradient(135deg, var(--color-navy-900) 0%, var(--color-navy-600) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section {
  position: relative;
}

.section--alt {
  background: var(--gradient-section);
}

/* ---------- Marquee — Navy band ---------- */
.marquee-section {
  /* background: linear-gradient(90deg, var(--color-navy-950) 0%, var(--color-navy-800) 50%, var(--color-navy-950) 100%); */
  border-block: 1px solid rgba(255, 255, 255, 0.06);
  padding-block: var(--space-2xl);
  position: relative;
  overflow: hidden;
}

.marquee-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.06), transparent);
  pointer-events: none;
}

.marquee-section__label {
  color: rgba(0, 0, 0, 0.55);
  letter-spacing: 0.12em;
}

.marquee__logo-item {
  background: rgba(255, 255, 255, 0.92);
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.marquee__logo-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.22);
}

.marquee__logo {
  opacity: 0.85;
  filter: none;
}

.marquee__logo-item:hover .marquee__logo {
  opacity: 1;
  filter: none;
  transform: none;
}

/* ---------- Stats — Premium glass cards ---------- */
.stats__bg {
  background: var(--gradient-primary);
  background-size: 300% 300%;
}

.stats__item {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: transform var(--transition-base), background var(--transition-base), box-shadow var(--transition-base);
}

.stats__item:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.14);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
}

.stats__number {
  background: linear-gradient(180deg, #FFFFFF 0%, #38BDF8 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ---------- Why Choose Us Cards ---------- */
.why {
  background: var(--gradient-section);
}

.why__title {
  background: linear-gradient(135deg, var(--color-navy-900) 0%, var(--color-navy-600) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.why__feature {
  border: 1px solid rgba(203, 213, 225, 0.6);
  box-shadow: var(--shadow-sm);
}

.why__feature:hover {
  border-color: rgba(59, 130, 246, 0.3);
  box-shadow: var(--shadow-md);
}

.why__icon {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.12) 0%, rgba(6, 182, 212, 0.08) 100%);
  border: 1px solid rgba(59, 130, 246, 0.12);
}

.why__feature:hover .why__icon {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.18) 0%, rgba(6, 182, 212, 0.12) 100%);
}

/* ---------- Timeline ---------- */
.timeline__content {
  border: 1px solid rgba(203, 213, 225, 0.5);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.timeline__marker {
  background: var(--gradient-primary-vivid);
  border: 3px solid var(--color-white);
  box-shadow: var(--shadow-glow);
}

.timeline__marker span {
  color: var(--color-white);
}

/* Mobile learn cards — alternating gradients */
@media (max-width: 768px) {
  .timeline__item:nth-child(4n + 1) .timeline__content {
    background: linear-gradient(145deg, #0a1628 0%, #1b3a6b 55%, #2563eb 100%);
  }

  .timeline__item:nth-child(4n + 2) .timeline__content {
    background: linear-gradient(145deg, #0f2240 0%, #234878 50%, #3b82f6 100%);
  }

  .timeline__item:nth-child(4n + 3) .timeline__content {
    background: linear-gradient(145deg, #152d54 0%, #1e40af 55%, #38bdf8 100%);
  }

  .timeline__item:nth-child(4n + 4) .timeline__content {
    background: linear-gradient(145deg, #0f2744 0%, #2563eb 45%, #06b6d4 100%);
  }

  .timeline__item:nth-child(even) .timeline__content {
    transform: translateY(4px);
  }

  .timeline__item:nth-child(even) .timeline__content.hover-lift:hover,
  .timeline__item:nth-child(even) .timeline__content:hover {
    transform: translateY(1px);
  }

  .learn .section__header {
    margin-bottom: var(--space-xl);
  }
}

/* ---------- Attend Cards ---------- */
.attend__card {
  border: 1px solid rgba(203, 213, 225, 0.5);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.attend__card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(59, 130, 246, 0.3);
}

.attend__icon {
  background: linear-gradient(135deg, var(--color-navy-800) 0%, var(--color-navy-600) 100%);
  color: var(--color-accent);
  border-radius: 14px;
}

.attend__cta {
  background: linear-gradient(135deg, var(--color-navy-900) 0%, var(--color-navy-700) 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--color-white);
  box-shadow: var(--shadow-xl);
}

.attend__cta p {
  color: rgba(255, 255, 255, 0.85);
}

/* ---------- Course Cards — Premium ---------- */
.courses {
  background: var(--color-white);
  position: relative;
}

.courses::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.3), transparent);
}

.course-card {
  border: 1px solid rgba(203, 213, 225, 0.5);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.course-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl), 0 0 0 1px rgba(59, 130, 246, 0.15);
  border-color: rgba(59, 130, 246, 0.25);
}

.course-card__overlay {
  background: linear-gradient(to top, rgba(10, 22, 40, 0.75) 0%, transparent 55%);
}

.course-card__duration {
  background: rgba(15, 34, 64, 0.85);
  color: var(--color-accent);
  border: 1px solid rgba(56, 189, 248, 0.2);
}

.course-card__topics li::before {
  background: var(--color-secondary);
}

/* ---------- Accordion ---------- */
.accordion__item {
  border: 1px solid rgba(203, 213, 225, 0.5);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.accordion__item.is-open {
  border-color: rgba(59, 130, 246, 0.35);
  box-shadow: var(--shadow-md), 0 0 0 1px rgba(59, 130, 246, 0.1);
}

.accordion__trigger:hover {
  background: rgba(59, 130, 246, 0.04);
}

.curriculum__module-title {
  border-bottom-color: var(--color-secondary);
}

/* ---------- Global / Orgs ---------- */
.global__map {
  border: 1px solid rgba(203, 213, 225, 0.5);
  box-shadow: var(--shadow-xl);
}

.global__marker::before {
  background: var(--color-secondary);
  box-shadow: 0 0 12px rgba(59, 130, 246, 0.6);
}

.global__countries li {
  transition: all var(--transition-base);
}

.global__countries li:hover {
  background: var(--color-navy-800);
  border-color: var(--color-navy-600);
  color: var(--color-white);
  transform: translateY(-2px);
}

.orgs__logo-wrap {
  border: 1px solid rgba(203, 213, 225, 0.5);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.orgs__logo-wrap:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(59, 130, 246, 0.25);
}

/* ---------- About ---------- */
.about {
  background: var(--gradient-section);
}

.about__illustration {
  box-shadow: var(--shadow-xl);
  border: 1px solid rgba(255, 255, 255, 0.8);
}

.about__badge {
  border: 1px solid rgba(59, 130, 246, 0.2);
  box-shadow: var(--shadow-lg);
}

.about__feature svg {
  color: var(--color-secondary);
}

/* ---------- Testimonials ---------- */
.testimonials {
  background: linear-gradient(160deg, var(--color-navy-950) 0%, var(--color-navy-800) 50%, var(--color-navy-900) 100%);
}

.testimonials::before {
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
}

.testimonials .section__eyebrow {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.12);
  color: var(--color-accent);
}

.testimonials .section__eyebrow::before {
  background: var(--color-accent-warm);
  box-shadow: 0 0 8px rgba(245, 158, 11, 0.5);
}

.testimonials .section__title {
  background: linear-gradient(135deg, #FFFFFF 0%, #94A3B8 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.testimonials .section__subtitle {
  color: rgba(255, 255, 255, 0.6);
}

.testimonials__card {
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.25);
}

.testimonials__quote {
  color: rgba(255, 255, 255, 0.88);
}

.testimonials__name {
  color: var(--color-white);
}

.testimonials__role {
  color: rgba(255, 255, 255, 0.55);
}

.testimonials__arrow {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.15);
  color: var(--color-white);
}

.testimonials__arrow:hover {
  background: var(--color-secondary);
  border-color: var(--color-secondary);
}

.testimonials__avatar--photo {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.18);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.testimonials__meta .testimonials__stars {
  color: var(--color-accent-warm);
}

.testimonials__dot.is-active {
  background: var(--gradient-gold);
}

/* ---------- Learn / Curriculum sections ---------- */
.learn {
  background: var(--color-white);
}

.curriculum {
  background: var(--gradient-section);
}

.learn .section__header,
.curriculum .section__header {
  position: relative;
}

/* ---------- Contact ---------- */
.contact {
  background: var(--color-white);
  position: relative;
}

.contact::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(600px, 80%);
  height: 200px;
  background: radial-gradient(ellipse, rgba(59, 130, 246, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.contact__form {
  background: var(--color-white);
  border: 1px solid rgba(203, 213, 225, 0.6);
  box-shadow: var(--shadow-xl);
  position: relative;
  overflow: hidden;
}

.contact__form::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary-vivid);
}

.form__input:focus {
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.12);
}

/* ---------- Final CTA ---------- */
.final-cta__bg {
  background: linear-gradient(135deg, var(--color-navy-950) 0%, var(--color-navy-700) 40%, #2563EB 100%);
  background-size: 300% 300%;
}

.final-cta__title {
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.btn--white {
  background: var(--color-white);
  color: var(--color-navy-800);
  font-weight: 700;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
}

.btn--white:hover {
  background: var(--gradient-gold);
  color: var(--color-navy-900);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(245, 158, 11, 0.35);
}

/* ---------- Footer ---------- */
.footer {
  background: linear-gradient(180deg, var(--color-navy-950) 0%, #020810 100%);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer__logo {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
}

.footer__list a:hover {
  color: var(--color-accent);
}

.footer__social-link:hover {
  background: var(--color-secondary);
  box-shadow: 0 4px 16px rgba(59, 130, 246, 0.4);
}

/* ---------- Sticky Actions ---------- */
.sticky-whatsapp {
  box-shadow: 0 8px 28px rgba(37, 211, 102, 0.4);
}

.sticky-whatsapp:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 12px 36px rgba(37, 211, 102, 0.5);
}

.sticky-cta {
  background: var(--gradient-primary-vivid);
  box-shadow: var(--shadow-glow), 0 8px 32px rgba(37, 99, 235, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.sticky-cta:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 0 48px rgba(59, 130, 246, 0.5), 0 12px 40px rgba(37, 99, 235, 0.45);
}

/* ---------- Modal ---------- */
.modal__dialog {
  border: 1px solid rgba(203, 213, 225, 0.5);
  box-shadow: var(--shadow-xl), 0 0 0 1px rgba(59, 130, 246, 0.08);
}

.modal__dialog::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  
  border-radius: var(--border-radius-xl) var(--border-radius-xl) 0 0;
}

.modal__title {
  background: linear-gradient(135deg, var(--color-navy-900) 0%, var(--color-navy-600) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ---------- Responsive Premium ---------- */
@media (max-width: 768px) {
  .hero__orb--1,
  .hero__orb--2 {
    opacity: 0.5;
  }

  .section__title {
    font-size: clamp(1.625rem, 5vw, 2rem);
  }

  .testimonials .section__title {
    -webkit-text-fill-color: transparent;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero__orb--1,
  .hero__orb--2,
  .hero__gradient--3 {
    animation: none;
  }
}

/* ---------- Hover lift global ---------- */
.hover-lift:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}