/* ============================================
   GlobalStudents - Custom Palette
   Colors: #314B60, #3C6182, #6C859B, #E7E7E7
   ============================================ */

:root {
  --color-primary: #3C6182;
  --color-primary-dark: #314B60;
  --color-primary-light: #5a7a96;
  --color-primary-bg: #dce5ec;

  --color-secondary: #6C859B;
  --color-secondary-dark: #5a7389;
  --color-secondary-light: #8a9fb3;
  --color-secondary-bg: #e8eef3;

  --color-accent: #3C6182;
  --color-accent-dark: #314B60;
  --color-accent-light: #5a7a96;

  --color-success: #3C6182;

  --color-dark: #314B60;
  --color-slate: #3C6182;
  --color-gray: #6C859B;
  --color-light: #E7E7E7;
  --color-white: #ffffff;
  --color-surface: #ffffff;

  --gradient-hero: linear-gradient(135deg, #314B60 0%, #3C6182 50%, #6C859B 100%);
  --gradient-soft: linear-gradient(180deg, #e8eef3 0%, #E7E7E7 100%);
  --gradient-card: linear-gradient(145deg, #ffffff 0%, #E7E7E7 100%);

  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --section-padding: 5rem 0;
  --container-max: 1200px;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --transition: 0.2s ease;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-slate);
  background: var(--color-light);
  overflow-x: hidden;
}

.container { max-width: var(--container-max); margin: 0 auto; padding: 0 1.5rem; }

/* Navigation */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(15, 23, 42, 0.12);
  transition: var(--transition);
}

.nav__container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  font-weight: 700;
  font-size: 1.25rem;
  text-decoration: none;
  display: flex;
  align-items: center;
  letter-spacing: -0.02em;
}

.nav__logo-part1 { color: var(--color-primary); }
.nav__logo-part2 { color: var(--color-secondary); }

.nav__menu {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav__menu a {
  color: var(--color-slate);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition);
}

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

.nav__cta {
  background: var(--gradient-hero);
  color: white !important;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav__toggle span { width: 24px; height: 2px; background: var(--color-dark); }

/* Hero */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: 8rem 0 4rem;
  overflow: hidden;
}

.hero__bg { position: absolute; inset: 0; z-index: 0; }

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(60, 97, 130, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(60, 97, 130, 0.05) 1px, transparent 1px);
  background-size: 40px 40px;
}

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

.hero__illustration { position: absolute; z-index: 1; opacity: 0.4; }

.hero__illustration--globe {
  top: 50%;
  right: 5%;
  transform: translateY(-50%);
  width: 350px;
  height: 350px;
}

.hero__illustration--email { bottom: 20%; left: 10%; width: 80px; height: 60px; }

.hero .pulse { animation: pulse 2s ease-in-out infinite; }

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.1); }
}

.hero__content { position: relative; z-index: 2; max-width: 640px; }

.hero__title {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800;
  line-height: 1.2;
  color: var(--color-dark);
  margin: 0 0 1.5rem;
  letter-spacing: -0.02em;
}

.hero__subtext {
  font-size: 1.125rem;
  color: var(--color-slate);
  margin: 0 0 2rem;
  max-width: 540px;
}

.hero__cta { display: flex; gap: 1rem; flex-wrap: wrap; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn--primary {
  background: var(--gradient-hero);
  color: white;
  box-shadow: 0 4px 14px rgba(60, 97, 130, 0.4);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(60, 97, 130, 0.5);
}

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

.btn--secondary:hover { background: var(--color-primary-bg); }

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

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

/* Sections */
.section { padding: var(--section-padding); }

.section--alt {
  background: var(--color-surface);
  box-shadow: inset 0 1px 0 rgba(0,0,0,0.06);
}

.section__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--color-dark);
  text-align: center;
  margin: 0 0 1rem;
}

.section__subtitle {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 3rem;
  color: var(--color-gray);
}

/* Purpose */
.purpose__illustration { width: 160px; height: 128px; margin: 0 auto 2rem; opacity: 0.8; }

.purpose__text {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 3rem;
  font-size: 1.125rem;
}

/* Benefits */
.benefits {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.benefit-card {
  background: var(--gradient-card);
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(60, 97, 130, 0.15);
  transition: var(--transition);
}

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

.benefit-card__icon { width: 48px; height: 48px; color: var(--color-primary); margin-bottom: 1rem; }
.benefit-card__icon svg { width: 100%; height: 100%; }
.benefit-card h3 { font-size: 1rem; font-weight: 600; color: var(--color-dark); margin: 0; }

/* Users */
.users__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.user-card {
  background: var(--gradient-card);
  padding: 2rem 1.5rem;
  border-radius: var(--radius-lg);
  text-align: center;
  border: 1px solid rgba(60, 97, 130, 0.25);
  transition: var(--transition);
}

.user-card:hover {
  border-color: var(--color-secondary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.user-card__icon { width: 64px; height: 64px; margin: 0 auto 1rem; color: var(--color-secondary); }
.user-card__icon svg { width: 100%; height: 100%; }
.user-card h3 { font-size: 1rem; font-weight: 600; color: var(--color-dark); margin: 0; }
.users .btn { margin: 0 auto; display: flex; }

/* Trust */
.trust {
  background: var(--gradient-hero);
  color: white;
}

.trust__illustration { width: 100px; height: 67px; margin: 0 auto 1.5rem; opacity: 0.9; }
.trust__illustration svg { stroke: white !important; }
.trust .trust__items { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }
.trust__item { display: flex; align-items: center; gap: 0.75rem; font-weight: 500; }
.trust__item svg { width: 24px; height: 24px; flex-shrink: 0; }

/* About */
.about__text { text-align: center; max-width: 700px; margin: 0 auto 2rem; font-size: 1.125rem; }
.about__illustration { width: 280px; height: 168px; margin: 0 auto 3rem; opacity: 0.8; }
.about__blocks { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; }
.about__block {
  background: var(--gradient-card);
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(60, 97, 130, 0.2);
}
.about__block h3 { color: var(--color-primary); font-size: 1.25rem; margin: 0 0 1rem; }
.about__block p, .about__block ul { margin: 0; color: var(--color-slate); }
.about__block ul { padding-left: 1.25rem; }
.about__block li { margin-bottom: 0.5rem; }

/* Services */
.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.service-card {
  background: var(--color-surface);
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(60, 97, 130, 0.15);
  transition: var(--transition);
}

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

.service-card__icon { width: 48px; height: 48px; color: var(--color-primary); margin-bottom: 1rem; }
.service-card__icon svg { width: 100%; height: 100%; }
.service-card h3 { font-size: 1.125rem; color: var(--color-dark); margin: 0 0 0.5rem; }
.service-card p { margin: 0; font-size: 0.9rem; color: var(--color-gray); }

.service-flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 2rem;
  background: rgba(60, 97, 130, 0.2);
  border-radius: var(--radius-lg);
}

.service-flow span { font-weight: 600; color: var(--color-dark); }
.service-flow svg { width: 24px; height: 24px; color: var(--color-primary); }

/* Pricing */
.pricing__toggle { display: flex; justify-content: center; gap: 0; margin-bottom: 2rem; }

.pricing__toggle-btn {
  padding: 0.5rem 1.5rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  border: 2px solid var(--color-gray);
  background: var(--color-surface);
  color: var(--color-gray);
  cursor: pointer;
  transition: var(--transition);
}

.pricing__toggle-btn:first-child { border-radius: var(--radius) 0 0 var(--radius); }
.pricing__toggle-btn:last-child { border-radius: 0 var(--radius) var(--radius) 0; }
.pricing__toggle-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

.pricing__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.price-card {
  background: var(--color-surface);
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 2px solid rgba(60, 97, 130, 0.2);
  position: relative;
  transition: var(--transition);
}

.price-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
}

.price-card--featured {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary);
}

.price-card__badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-hero);
  color: white;
  padding: 0.25rem 1rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
}

.price-card__illustration { width: 60px; height: 45px; margin-bottom: 1rem; color: var(--color-primary); }
.price-card__illustration svg { width: 100%; height: 100%; }
.price-card h3 { font-size: 1.25rem; color: var(--color-dark); margin: 0 0 0.25rem; }
.price-card__desc { font-size: 0.9rem; color: var(--color-gray); margin: 0 0 1rem; }
.price-card__price { font-size: 2rem; font-weight: 800; color: var(--color-primary); margin-bottom: 1.5rem; }
.price-card ul { list-style: none; padding: 0; margin: 0 0 1.5rem; }
.price-card li { padding: 0.5rem 0; border-bottom: 1px solid rgba(0,0,0,0.05); font-size: 0.95rem; }
.price-card li:last-child { border-bottom: none; }
.price-card .btn { width: 100%; }
.pricing__note { text-align: center; color: var(--color-gray); font-size: 1rem; }
.pricing__note strong { color: var(--color-dark); }

/* Contact */
.contact__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
  max-width: 900px;
  margin: 0 auto 1.5rem;
}

.contact__illustration { width: 180px; height: 144px; opacity: 0.9; }

.contact__form { display: flex; flex-direction: column; gap: 1rem; }

.contact__form input,
.contact__form select,
.contact__form textarea {
  padding: 0.75rem 1rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  border: 2px solid rgba(60, 97, 130, 0.3);
  border-radius: var(--radius);
  background: var(--color-surface);
  transition: var(--transition);
}

.contact__form input:focus,
.contact__form select:focus,
.contact__form textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.contact__note { text-align: center; color: var(--color-gray); font-size: 0.95rem; max-width: 500px; margin: 0 auto; }

/* Request Form */
.request__form { max-width: 640px; margin: 0 auto; }

.request__progress {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.request__progress-step {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(60, 97, 130, 0.2);
  color: var(--color-gray);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  transition: var(--transition);
  cursor: pointer;
}

.request__progress-step:hover {
  background: rgba(60, 97, 130, 0.35);
  color: var(--color-dark);
}

.request__progress-step.active { background: var(--color-primary); color: white; }
.request__progress-step.completed { background: var(--color-success); color: white; }
.request__progress-line { width: 40px; height: 3px; background: rgba(60, 97, 130, 0.2); border-radius: 2px; }

.request__step { display: none; }
.request__step.active { display: block; }
.request__step h3 { font-size: 1.25rem; color: var(--color-dark); margin: 0 0 1.5rem; }

.request__fields { display: flex; flex-direction: column; gap: 1rem; margin-bottom: 1.5rem; }

.request__fields label { display: flex; flex-direction: column; gap: 0.25rem; }
.request__fields label span { font-size: 0.9rem; font-weight: 500; color: var(--color-dark); }
.request__fields label span em { color: #ef4444; }

.request__fields input,
.request__fields select,
.request__fields textarea {
  padding: 0.75rem 1rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  border: 2px solid rgba(60, 97, 130, 0.3);
  border-radius: var(--radius);
  background: var(--color-surface);
}

.request__fields input.error,
.request__fields select.error { border-color: #ef4444; }

.request__fields input:focus,
.request__fields select:focus,
.request__fields textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.request__agreement { margin: 1.5rem 0; }
.request__agreement label { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.75rem; cursor: pointer; }
.request__agreement a { color: var(--color-primary); text-decoration: none; }
.request__agreement a:hover { text-decoration: underline; }

.request__nav { display: flex; gap: 1rem; margin-top: 2rem; }

/* Footer */
.footer {
  background: var(--color-dark);
  color: white;
  padding: 3rem 0 1.5rem;
}

.footer__content { text-align: center; margin-bottom: 2rem; }

.footer__logo {
  display: inline-flex;
  align-items: center;
  font-weight: 700;
  font-size: 1.25rem;
  text-decoration: none;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.footer__logo-part1 { color: #8a9fb3; }
.footer__logo-part2 { color: #b8c5d4; }

.footer__content p { color: rgba(255,255,255,0.7); margin: 0 0 1.5rem; }
.footer__nav { display: flex; flex-wrap: wrap; justify-content: center; gap: 1.5rem; }
.footer__nav a { color: rgba(255,255,255,0.8); text-decoration: none; }
.footer__nav a:hover { color: white; }
.footer__copy { text-align: center; font-size: 0.875rem; color: rgba(255,255,255,0.5); padding-top: 1.5rem; border-top: 1px solid rgba(255,255,255,0.1); }

/* Responsive */
@media (max-width: 768px) {
  .nav__menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-surface);
    flex-direction: column;
    padding: 1rem;
    box-shadow: var(--shadow-lg);
  }
  .nav__menu.open { display: flex; }
  .nav__toggle { display: flex; }
  .hero__illustration--globe { width: 200px; height: 200px; right: -20px; }
  .hero__illustration--email { display: none; }
  .contact__layout { grid-template-columns: 1fr; }
  .contact__illustration { margin: 0 auto; }
  .service-flow { flex-direction: column; }
  .service-flow svg { transform: rotate(90deg); }
}