/* =========================================
   1. VARIABLES & RESET
   ========================================= */
:root {
  --primary-blue: #0096C7;
  --primary-mint: #48CAE4;
  --white: #FFFFFF;
  --light-gray: #F8F9FA;
  --medium-gray: #E9ECEF;
  --dark-gray: #2D3436;
  --text-muted: #6C757D;
  --accent-yellow: #FFD60A;
  --accent-green: #06D6A0;
  --accent-red: #EF476F;
  
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.15);
  
  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
  
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--dark-gray);
  line-height: 1.6;
  background-color: var(--white);
}

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

a {
  color: var(--primary-blue);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover, a:focus {
  color: var(--primary-mint);
}

/* =========================================
   2. UTILITIES & LAYOUT
   ========================================= */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

.section {
  padding: var(--spacing-xl) 0;
}

.section__title {
  font-family: var(--font-heading);
  font-size: 2rem;
  text-align: center;
  margin-bottom: var(--spacing-md);
  color: var(--dark-gray);
}

.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }

/* =========================================
   3. COMPONENTS
   ========================================= */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all 0.3s ease;
  font-family: var(--font-body);
}

.btn--primary {
  background-color: var(--primary-blue);
  color: var(--white);
}
.btn--primary:hover, .btn--primary:focus {
  background-color: #0077a3;
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn--secondary {
  background-color: transparent;
  border-color: var(--white);
  color: var(--white);
}
.btn--secondary:hover, .btn--secondary:focus {
  background-color: var(--white);
  color: var(--primary-blue);
}

.btn--accent {
  background-color: var(--accent-yellow);
  color: var(--dark-gray);
}
.btn--accent:hover {
  background-color: #e6c009;
}

.btn--sm { padding: 0.5rem 1rem; font-size: 0.875rem; }
.btn--full { width: 100%; }

/* =========================================
   4. HEADER & NAVIGATION
   ========================================= */
.header {
  background-color: var(--white);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: var(--spacing-sm) 0;
}

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

.nav__list {
  display: none;
  list-style: none;
  gap: var(--spacing-md);
}

.nav__link {
  color: var(--dark-gray);
  font-weight: 500;
}
.nav__link.active, .nav__link:hover {
  color: var(--primary-blue);
}

.mobile-menu-btn {
  display: block;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.hamburger {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--dark-gray);
  position: relative;
}
.hamburger::before, .hamburger::after {
  content: '';
  position: absolute;
  width: 25px;
  height: 3px;
  background-color: var(--dark-gray);
  left: 0;
}
.hamburger::before { top: -8px; }
.hamburger::after { top: 8px; }

/* Mobile Menu Active State */
.nav.active .nav__list {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  background-color: var(--white);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-md);
}
.nav.active .btn {
  margin-top: var(--spacing-sm);
  text-align: center;
}

/* =========================================
   5. HERO SECTION
   ========================================= */
.hero {
  background-size: cover;
  background-position: center;
  color: var(--white);
  padding: var(--spacing-xl) 0;
  text-align: center;
  min-height: 60vh;
  display: flex;
  align-items: center;
}

.hero--small {
  min-height: 40vh;
}

.hero__title {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
  line-height: 1.2;
}

.hero__subtitle {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.9;
}

.hero__actions {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  align-items: center;
}

/* =========================================
   6. FEATURES & CARDS
   ========================================= */
.features__grid, .process__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
}

.feature-card {
  background: var(--white);
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.feature-card__icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
}

.feature-card__title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xs);
}

.feature-card__img {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-sm);
}

.feature-card__price {
  font-weight: 600;
  color: var(--primary-blue);
  margin: var(--spacing-sm) 0;
}

/* =========================================
   7. PROCESS & AMENITIES
   ========================================= */
.process__step {
  text-align: center;
  padding: var(--spacing-md);
}
.process__img {
  width: 120px;
  height: 120px;
  margin: 0 auto var(--spacing-sm);
}

.amenities__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
  text-align: center;
}

.amenity-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  font-weight: 500;
}
.amenity-item img {
  width: 48px;
  height: 48px;
}

/* =========================================
   8. BANNERS & CTA
   ========================================= */
.banner-student {
  background-color: var(--primary-mint);
  color: var(--dark-gray);
  text-align: center;
}
.banner-student__content h2 {
  font-family: var(--font-heading);
  margin-bottom: var(--spacing-sm);
}

.cta {
  background-color: var(--dark-gray);
  color: var(--white);
  text-align: center;
}
.cta__content h2 {
  font-family: var(--font-heading);
  margin-bottom: var(--spacing-sm);
}
.cta__actions {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
  align-items: center;
}

/* =========================================
   9. PRICING TABLE & FAQ
   ========================================= */
.table-responsive {
  overflow-x: auto;
}
.pricing-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.pricing-table th, .pricing-table td {
  padding: var(--spacing-sm);
  text-align: left;
  border-bottom: 1px solid var(--medium-gray);
}
.pricing-table th {
  background-color: var(--primary-blue);
  color: var(--white);
  font-weight: 600;
}

.faq__list {
  max-width: 800px;
  margin: 0 auto;
}
.faq__item {
  background: var(--white);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-sm);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.faq__question {
  padding: var(--spacing-sm) var(--spacing-md);
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  position: relative;
}
.faq__question::-webkit-details-marker { display: none; }
.faq__question::after {
  content: '+';
  position: absolute;
  right: var(--spacing-md);
  font-size: 1.5rem;
  color: var(--primary-blue);
}
details[open] .faq__question::after { content: '-'; }
.faq__answer {
  padding: 0 var(--spacing-md) var(--spacing-md);
  color: var(--text-muted);
}

/* =========================================
   10. CONTACT FORM
   ========================================= */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}
.contact__info h2, .contact__form-wrapper h2 {
  font-family: var(--font-heading);
  margin-bottom: var(--spacing-md);
}
.contact__item {
  margin-bottom: var(--spacing-sm);
}
.contact__item strong {
  display: block;
  margin-bottom: 0.25rem;
}

.form-group {
  margin-bottom: var(--spacing-sm);
}
.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  font-size: 0.875rem;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--medium-gray);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(0, 150, 199, 0.1);
}

/* =========================================
   11. FOOTER & LEGAL
   ========================================= */
.footer {
  background-color: var(--dark-gray);
  color: var(--white);
  padding: var(--spacing-lg) 0 var(--spacing-sm);
}
.footer__container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}
.footer__logo {
  margin-bottom: var(--spacing-sm);
  filter: brightness(0) invert(1);
}
.footer__col h4 {
  font-family: var(--font-heading);
  margin-bottom: var(--spacing-sm);
  color: var(--primary-mint);
}
.footer__links {
  list-style: none;
}
.footer__links li {
  margin-bottom: 0.5rem;
}
.footer__links a {
  color: var(--medium-gray);
}
.footer__links a:hover {
  color: var(--white);
}
.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--spacing-sm);
  text-align: center;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.legal-content {
  max-width: 800px;
}
.legal-content h1 {
  font-family: var(--font-heading);
  margin-bottom: var(--spacing-sm);
}
.legal-content h2 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-xs);
  color: var(--primary-blue);
}
.legal-content ul {
  margin-left: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}
.legal-content li {
  margin-bottom: 0.5rem;
}

/* =========================================
   12. MEDIA QUERIES (TABLET & DESKTOP)
   ========================================= */
@media (min-width: 768px) {
  .mobile-menu-btn { display: none; }
  
  .nav__list {
    display: flex;
    align-items: center;
  }
  .nav .btn {
    margin-left: var(--spacing-md);
    margin-top: 0;
  }
  
  .hero__title { font-size: 3rem; }
  .hero__actions {
    flex-direction: row;
    justify-content: center;
  }
  
  .features__grid, .process__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .amenities__grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .contact__grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .footer__container {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .cta__actions {
    flex-direction: row;
    justify-content: center;
  }
}

@media (min-width: 1024px) {
  .features__grid, .process__grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .amenities__grid {
    grid-template-columns: repeat(6, 1fr);
  }
  .footer__container {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}