/**
 * Assignment For You - Frontend Design System
 * Primary: #0f91e3 | Secondary: #fbbc34
 */

:root {
  --primary: #0f91e3;
  --primary-hover: #0c7ec4;
  --primary-dark: #095f96;
  --primary-light: #eff8ff;
  --primary-border: #bae0fd;

  --secondary: #fbbc34;
  --secondary-hover: #e5a820;
  --secondary-light: #fffbeb;
  
  --dark: #0f172a;
  --dark-surface: #1e293b;
  --text-main: #334155;
  --text-muted: #64748b;
  --bg-page: #f8fafc;
  --bg-white: #ffffff;
  --border-color: #e2e8f0;
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 25px -3px rgba(15, 145, 227, 0.12), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 30px -5px rgba(15, 23, 42, 0.08);

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: 'Poppins', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--text-main);
  background-color: var(--bg-page);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

/* ==========================================================================
   Top Header Bar
   ========================================================================== */
.top-bar {
  background: var(--dark);
  color: #94a3b8;
  font-size: 0.8125rem;
  padding: 7px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.top-bar a {
  color: #cbd5e1;
}

.top-bar a:hover {
  color: var(--secondary);
}

.top-bar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.top-bar-left, .top-bar-right {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

/* ==========================================================================
   Main Navbar
   ========================================================================== */
.main-nav-wrapper {
  background: var(--bg-white);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: all var(--transition-normal);
}

.navbar-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 0;
}

.navbar-brand img {
  height: 48px;
  width: auto;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}

.nav-item {
  position: relative;
}

.nav-link {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--dark);
  padding: 0.5rem 0;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: color var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
  color: var(--primary);
}

/* Mega Menu / Dropdown */
.dropdown-menu-custom {
  position: absolute;
  top: 100%;
  left: -20px;
  background: var(--bg-white);
  min-width: 680px;
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border-color);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all var(--transition-normal);
  z-index: 1050;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.nav-item:hover .dropdown-menu-custom {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.mega-col h6 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 0.75rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--primary-light);
}

.mega-col ul {
  list-style: none;
}

.mega-col ul li {
  margin-bottom: 0.45rem;
}

.mega-col ul li a {
  font-size: 0.85rem;
  color: var(--text-main);
  display: block;
  transition: transform var(--transition-fast), color var(--transition-fast);
}

.mega-col ul li a:hover {
  color: var(--primary);
  transform: translateX(4px);
}

/* Nav Actions */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.4rem;
  color: var(--dark);
  cursor: pointer;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn-brand-primary {
  background: var(--primary);
  color: #ffffff !important;
  font-weight: 600;
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--primary);
  box-shadow: 0 4px 14px rgba(15, 145, 227, 0.35);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-brand-primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 6px 20px rgba(15, 145, 227, 0.45);
  transform: translateY(-1px);
}

.btn-brand-secondary {
  background: var(--secondary);
  color: var(--dark) !important;
  font-weight: 600;
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--secondary);
  box-shadow: 0 4px 14px rgba(251, 188, 52, 0.3);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-brand-secondary:hover {
  background: var(--secondary-hover);
  transform: translateY(-1px);
}

.btn-brand-outline {
  background: transparent;
  color: var(--primary) !important;
  font-weight: 600;
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius-full);
  border: 2px solid var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-brand-outline:hover {
  background: var(--primary-light);
  color: var(--primary-hover) !important;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  position: relative;
  background: linear-gradient(135deg, #093c66 0%, #0f5a94 50%, #0f91e3 100%);
  color: #ffffff;
  padding: 4.5rem 0 5rem 0;
  overflow: hidden;
}

.hero-section::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23ffffff' fill-opacity='0.04' fill-rule='evenodd'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(251, 188, 52, 0.2);
  border: 1px solid var(--secondary);
  color: var(--secondary);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.35rem 1rem;
  border-radius: var(--radius-full);
  margin-bottom: 1.25rem;
}

.hero-title {
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.25rem;
  color: #ffffff;
}

.hero-title span {
  color: var(--secondary);
}

.hero-subtitle {
  font-size: 1.1rem;
  color: #e2e8f0;
  margin-bottom: 2rem;
  line-height: 1.7;
}

.hero-stats {
  display: flex;
  gap: 2.5rem;
  margin-top: 2rem;
}

.stat-item h3 {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--secondary);
  margin-bottom: 0.2rem;
}

.stat-item p {
  font-size: 0.85rem;
  color: #cbd5e1;
}

/* Quote Calculator Card */
.quote-card {
  background: #ffffff;
  color: var(--text-main);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border-color);
  position: relative;
  z-index: 10;
}

.quote-card-header {
  text-align: center;
  margin-bottom: 1.5rem;
}

.quote-card-header h3 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--dark);
}

.quote-card-header p {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.form-control-custom {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 0.9rem;
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  background-color: #ffffff;
}

.form-control-custom:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(15, 145, 227, 0.15);
}

/* ==========================================================================
   Trust / Features Bar
   ========================================================================== */
.features-strip {
  background: #ffffff;
  border-bottom: 1px solid var(--border-color);
  padding: 1.75rem 0;
}

.feature-box {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.feature-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-md);
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  flex-shrink: 0;
}

.feature-box h5 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 0.15rem;
}

.feature-box p {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin: 0;
}

/* ==========================================================================
   Section Styles
   ========================================================================== */
.section-padding {
  padding: 5rem 0;
}

.section-header {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 3.5rem auto;
}

.section-tag {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-light);
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-full);
  display: inline-block;
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: 2.15rem;
  font-weight: 800;
  color: var(--dark);
  line-height: 1.3;
  margin-bottom: 0.75rem;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--text-muted);
}

/* Course / Subject Cards */
.subject-card {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem 1.5rem;
  transition: all var(--transition-normal);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.subject-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-5px);
}

.subject-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 1.25rem;
}

.subject-card h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 0.65rem;
}

.subject-card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  flex-grow: 1;
  margin-bottom: 1.25rem;
}

.subject-link {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.subject-card:hover .subject-link {
  gap: 0.65rem;
}

/* How It Works Steps */
.step-card {
  text-align: center;
  position: relative;
  padding: 1rem;
}

.step-number {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #ffffff;
  font-size: 1.5rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem auto;
  box-shadow: 0 8px 20px rgba(15, 145, 227, 0.3);
}

.step-card h4 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 0.5rem;
}

.step-card p {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* Testimonial Cards */
.testimonial-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 2rem;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  height: 100%;
}

.stars {
  color: var(--secondary);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.testimonial-text {
  font-size: 0.925rem;
  color: var(--text-main);
  font-style: italic;
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.student-meta {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.student-avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: var(--primary);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
}

.student-info h6 {
  font-size: 0.925rem;
  font-weight: 700;
  color: var(--dark);
  margin: 0;
}

.student-info span {
  font-size: 0.775rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: #091a2e;
  color: #94a3b8;
  padding: 4.5rem 0 2rem 0;
  font-size: 0.9rem;
}

.footer-brand img {
  height: 44px;
  margin-bottom: 1.25rem;
}

.footer-brand p {
  color: #94a3b8;
  line-height: 1.7;
  font-size: 0.875rem;
  margin-bottom: 1.5rem;
}

.footer-heading {
  font-size: 1rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 1.5rem;
  position: relative;
}

.footer-heading::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 30px;
  height: 2px;
  background: var(--secondary);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.65rem;
}

.footer-links a {
  color: #94a3b8;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.footer-links a:hover {
  color: var(--secondary);
  transform: translateX(3px);
}

.footer-contact-item {
  display: flex;
  gap: 0.85rem;
  margin-bottom: 1rem;
  align-items: flex-start;
}

.footer-contact-item i {
  color: var(--secondary);
  margin-top: 0.2rem;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: 3.5rem;
  padding-top: 1.75rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.825rem;
}

/* Floating Actions */
.floating-actions {
  position: fixed;
  bottom: 25px;
  right: 25px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 999;
}

.float-btn {
  width: 54px;
  height: 54px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: #ffffff !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
  transition: transform var(--transition-fast);
}

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

.float-whatsapp {
  background: #25d366;
}

.float-quote {
  background: var(--primary);
}

/* Mobile Responsive */
@media (max-width: 991px) {
  .nav-links, .dropdown-menu-custom {
    display: none;
  }
  .mobile-toggle {
    display: block;
  }
  .hero-title {
    font-size: 2.15rem;
  }
  .hero-stats {
    flex-wrap: wrap;
    gap: 1.5rem;
  }
  .top-bar {
    display: none;
  }
}

/* Mobile Offcanvas */
.mobile-drawer {
  position: fixed;
  top: 0; right: 0; bottom: 0;
  width: 300px;
  background: #ffffff;
  z-index: 2000;
  box-shadow: -5px 0 25px rgba(0, 0, 0, 0.15);
  padding: 1.5rem;
  transform: translateX(100%);
  transition: transform 0.3s ease;
  overflow-y: auto;
}

.mobile-drawer.open {
  transform: translateX(0);
}

.drawer-backdrop {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1999;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.drawer-backdrop.show {
  opacity: 1;
  visibility: visible;
}