/* ========================================
   HUMMINGBIRD LEARNING CENTER - Main Stylesheet
   ======================================== */

/* 1. CSS CUSTOM PROPERTIES (Design Tokens) */
:root {
  /* Primary palette */
  --color-primary: #2ECC71;
  --color-primary-dark: #27AE60;
  --color-primary-light: #A9DFBF;
  --color-primary-ultra-light: #E8F8F0;

  /* Accent palette */
  --color-accent-orange: #F39C12;
  --color-accent-orange-dark: #E67E22;
  --color-accent-pink: #E91E63;
  --color-accent-blue: #3498DB;
  --color-accent-blue-dark: #2980B9;
  --color-accent-yellow: #F1C40F;

  /* Neutrals */
  --color-bg: #FEFEFE;
  --color-bg-warm: #FFF9F0;
  --color-text: #2C3E50;
  --color-text-light: #7F8C8D;
  --color-border: #E0E0E0;

  /* Typography */
  --font-heading: 'Baloo 2', cursive;
  --font-body: 'Nunito', sans-serif;

  /* Border radius */
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 30px;
  --radius-xl: 50px;
  --radius-full: 999px;

  /* Shadows */
  --shadow-soft: 0 4px 20px rgba(46, 204, 113, 0.15);
  --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.08);
  --shadow-hover: 0 12px 40px rgba(46, 204, 113, 0.25);

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

/* 2. BOOTSTRAP OVERRIDES */

/* Body */
body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 800;
  color: var(--color-text);
}

h1 { font-size: 3rem; line-height: 1.2; }
h2 { font-size: 2.25rem; line-height: 1.3; }
h3 { font-size: 1.75rem; line-height: 1.35; }
h4 { font-size: 1.35rem; line-height: 1.4; }
p  { font-size: 1rem; line-height: 1.7; }
small { font-size: 0.875rem; line-height: 1.5; }

@media (max-width: 768px) {
  h1 { font-size: 2.25rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.5rem; }
}

/* Buttons */
.btn {
  border-radius: var(--radius-full);
  padding: 0.6rem 1.8rem;
  font-family: var(--font-body);
  font-weight: 700;
  border: none;
  transition: all var(--transition-normal);
}

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

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  color: #fff;
}

.btn-accent {
  background-color: var(--color-accent-orange);
  color: #fff;
}

.btn-accent:hover {
  background-color: var(--color-accent-orange-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(243, 156, 18, 0.25);
}

.btn-outline-light {
  border-radius: var(--radius-full);
  border-width: 2px;
}

.btn-outline-light:hover {
  transform: translateY(-2px);
}

/* Language toggle */
.btn-lang {
  background: var(--color-accent-blue);
  color: #fff;
  font-weight: 800;
  padding: 0.35rem 1rem;
  font-size: 0.85rem;
  border-radius: var(--radius-full);
  border: none;
  transition: all var(--transition-fast);
}

.btn-lang:hover {
  background: var(--color-accent-blue-dark);
  color: #fff;
}

/* Cards */
.card {
  border: none;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.card-body {
  padding: 1.5rem;
}

/* Navbar */
.navbar {
  background: rgba(255, 255, 255, 0.97) !important;
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
  padding: 0.8rem 0;
  transition: all var(--transition-normal);
}

.navbar-brand {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--color-primary) !important;
}

.navbar-brand i {
  color: var(--color-accent-orange);
}

.nav-link {
  font-family: var(--font-body);
  font-weight: 600;
  color: var(--color-text) !important;
  padding: 0.5rem 1rem !important;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  margin: 0 0.15rem;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary-dark) !important;
  background: var(--color-primary-ultra-light);
}

.navbar-toggler {
  border: none;
  padding: 0.25rem 0.5rem;
}

.navbar-toggler:focus {
  box-shadow: none;
}

/* Form controls */
.form-control, .form-select {
  border-radius: var(--radius-md);
  border: 2px solid var(--color-border);
  padding: 0.75rem 1.25rem;
  font-family: var(--font-body);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus, .form-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 0.2rem rgba(46, 204, 113, 0.25);
}

/* Badges */
.badge {
  border-radius: var(--radius-full);
  padding: 0.4em 0.8em;
  font-weight: 700;
  font-family: var(--font-body);
}

/* 3. SHARED COMPONENTS */

/* Section spacing */
section {
  padding: 5rem 0;
}

@media (max-width: 768px) {
  section {
    padding: 3rem 0;
  }
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.15rem;
  color: var(--color-text-light);
  max-width: 600px;
  margin: 0 auto 3rem;
}

/* Background alternation */
.bg-warm { background-color: var(--color-bg-warm); }

/* Footer */
.footer {
  background: var(--color-text);
  color: #fff;
  padding: 2.5rem 0;
  margin-top: 3rem;
}

.footer .navbar-brand {
  color: var(--color-primary-light) !important;
  font-size: 1.3rem;
}

.footer .navbar-brand i {
  color: var(--color-accent-orange);
}

.social-link {
  color: #fff;
  font-size: 1.5rem;
  transition: color var(--transition-fast), transform var(--transition-fast);
  display: inline-block;
}

.social-link:hover {
  color: var(--color-accent-blue);
  transform: scale(1.2);
}

/* Wave divider */
.wave-divider {
  width: 100%;
  display: block;
  margin-top: -1px;
}

/* Icon box */
.icon-box {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin: 0 auto 1.25rem;
  transition: transform var(--transition-normal);
}

.icon-box:hover {
  transform: scale(1.1) rotate(-5deg);
}

.icon-box-green {
  background: var(--color-primary-ultra-light);
  color: var(--color-primary);
}

.icon-box-orange {
  background: #FFF3E0;
  color: var(--color-accent-orange);
}

.icon-box-pink {
  background: #FCE4EC;
  color: var(--color-accent-pink);
}

.icon-box-blue {
  background: #E3F2FD;
  color: var(--color-accent-blue);
}

/* Page hero (inner pages) */
.page-hero {
  padding: 10rem 0 5rem;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent-blue) 100%);
  color: #fff;
  text-align: center;
}

.page-hero h1 {
  color: #fff;
}

.page-hero .breadcrumb {
  justify-content: center;
}

.page-hero .breadcrumb-item a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
}

.page-hero .breadcrumb-item.active {
  color: #fff;
}

.page-hero .breadcrumb-item + .breadcrumb-item::before {
  color: rgba(255, 255, 255, 0.6);
}

/* SweetAlert2 custom theming */
.swal2-confirm {
  background-color: var(--color-primary) !important;
  border-radius: var(--radius-full) !important;
  font-family: var(--font-body) !important;
  font-weight: 700 !important;
}

.swal2-confirm:hover {
  background-color: var(--color-primary-dark) !important;
}

/* Utility */
.text-primary-custom { color: var(--color-primary) !important; }
.text-accent-orange { color: var(--color-accent-orange) !important; }
.text-accent-pink { color: var(--color-accent-pink) !important; }
.text-accent-blue { color: var(--color-accent-blue) !important; }

.bg-primary-custom { background-color: var(--color-primary) !important; }

.rounded-playful { border-radius: var(--radius-lg); }
.rounded-hero { border-radius: var(--radius-xl); }

/* Scroll offset for anchor links */