/* ============================================
   AC & REFRIGERATION TRAINING INSTITUTE
   Main Stylesheet — Design System & Core
   ============================================ */

/* ─── CSS Custom Properties (Design Tokens) ─── */
:root {
  /* Colors */
  --primary: #0a6e8a;
  --primary-dark: #054f64;
  --primary-light: #0d8fb0;
  --secondary: #1a3c5e;
  --accent: #f0a500;
  --accent-hover: #d4920a;
  --success: #28a745;
  --warning: #ffc107;
  --danger: #dc3545;

  /* Neutrals */
  --white: #ffffff;
  --off-white: #f8fafb;
  --light-bg: #f0f6f9;
  --gray-100: #e8eef2;
  --gray-200: #d0dae2;
  --gray-300: #a8b8c4;
  --gray-400: #7a8f9e;
  --gray-500: #5a6f7e;
  --dark: #1a2a36;
  --dark-hover: #0f1a23;

  /* Typography */
  --font-primary: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-heading: Georgia, 'Times New Roman', serif;

  /* Spacing */
  --section-padding: 80px 0;
  --container-max: 1200px;
  --container-padding: 0 20px;

  /* Borders */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 50px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(10,110,138,0.08);
  --shadow-md: 0 4px 20px rgba(10,110,138,0.12);
  --shadow-lg: 0 8px 40px rgba(10,110,138,0.16);
  --shadow-xl: 0 16px 60px rgba(10,110,138,0.20);

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Z-index */
  --z-nav: 1000;
  --z-overlay: 999;
  --z-modal: 1050;
  --z-toast: 1100;
}

/* ─── Reset & Base ─── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-primary);
  color: var(--dark);
  background: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

ul, ol {
  list-style: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
  background: none;
}

button {
  cursor: pointer;
}

/* ─── Accessibility ─── */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

:focus-visible {
  outline: 3px solid var(--primary-light);
  outline-offset: 2px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  background: var(--primary);
  color: var(--white);
  padding: 8px 16px;
  z-index: var(--z-toast);
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.skip-link:focus {
  top: 16px;
}

/* ─── Container ─── */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--container-padding);
}

/* ─── Section Base ─── */
.section {
  padding: var(--section-padding);
}

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

.section--dark {
  background: var(--secondary);
  color: var(--white);
}

.section__header {
  text-align: center;
  margin-bottom: 60px;
}

.section__eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 12px;
  background: linear-gradient(135deg, rgba(10,110,138,0.1), rgba(10,110,138,0.05));
  padding: 6px 16px;
  border-radius: var(--radius-full);
}

.section--dark .section__eyebrow {
  color: var(--accent);
  background: rgba(240,165,0,0.15);
}

.section__title {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  color: var(--secondary);
  line-height: 1.3;
  margin-bottom: 16px;
}

.section--dark .section__title {
  color: var(--white);
}

.section__subtitle {
  font-size: 1.05rem;
  color: var(--gray-500);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.8;
}

.section--dark .section__subtitle {
  color: rgba(255,255,255,0.7);
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.3px;
  transition: all var(--transition-normal);
  border: 2px solid transparent;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.btn:hover::after {
  opacity: 1;
}

.btn--primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--white);
  box-shadow: 0 4px 15px rgba(10,110,138,0.35);
}

.btn--primary:hover {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(10,110,138,0.45);
}

.btn--accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  color: var(--white);
  box-shadow: 0 4px 15px rgba(240,165,0,0.35);
}

.btn--accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(240,165,0,0.45);
}

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

.btn--outline:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-2px);
}

.btn--white {
  background: var(--white);
  color: var(--primary);
  box-shadow: var(--shadow-md);
}

.btn--white:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn--sm {
  padding: 10px 22px;
  font-size: 0.85rem;
}

.btn--lg {
  padding: 18px 42px;
  font-size: 1.05rem;
}

.btn-group {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ─── Cards ─── */
.card {
  background: var(--white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all var(--transition-normal);
  border: 1px solid var(--gray-100);
}

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

.card__image {
  width: 100%;
  height: 220px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.card:hover .card__image {
  transform: scale(1.05);
}

.card__image-wrapper {
  overflow: hidden;
  position: relative;
}

.card__badge {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--accent);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.card__body {
  padding: 24px;
}

.card__title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 10px;
  line-height: 1.4;
}

.card__text {
  font-size: 0.9rem;
  color: var(--gray-500);
  margin-bottom: 16px;
  line-height: 1.7;
}

.card__footer {
  padding: 16px 24px;
  border-top: 1px solid var(--gray-100);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card__meta {
  display: flex;
  gap: 16px;
  font-size: 0.8rem;
  color: var(--gray-400);
}

.card__meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ─── Grid Layouts ─── */
.grid {
  display: grid;
  gap: 30px;
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

/* ─── Navigation ─── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-100);
  transition: all var(--transition-normal);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  max-width: var(--container-max);
  margin: 0 auto;
  height: 72px;
}

.navbar__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--secondary);
}

.navbar__logo {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.2rem;
  font-weight: 800;
  flex-shrink: 0;
}

.navbar__brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.navbar__brand-name {
  font-size: 1rem;
  color: var(--secondary);
}

.navbar__brand-tagline {
  font-size: 0.65rem;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

.navbar__menu {
  display: flex;
  align-items: center;
  gap: 4px;
}

.navbar__link {
  padding: 8px 14px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--gray-500);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.navbar__link:hover,
.navbar__link.active {
  color: var(--primary);
  background: rgba(10,110,138,0.08);
}

.navbar__cta {
  margin-left: 16px;
}

.navbar__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

.navbar__toggle:hover {
  background: var(--gray-100);
}

.navbar__toggle span {
  display: block;
  width: 24px;
  height: 2.5px;
  background: var(--secondary);
  border-radius: 2px;
  transition: all var(--transition-normal);
}

.navbar__toggle.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.navbar__toggle.open span:nth-child(2) {
  opacity: 0;
}

.navbar__toggle.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Nav */
.mobile-nav {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--white);
  z-index: var(--z-nav);
  padding: 24px 20px;
  overflow-y: auto;
}

.mobile-nav.open {
  display: block;
  animation: slideDown 0.3s ease;
}

.mobile-nav__link {
  display: block;
  padding: 14px 16px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--dark);
  border-bottom: 1px solid var(--gray-100);
  transition: all var(--transition-fast);
}

.mobile-nav__link:hover,
.mobile-nav__link.active {
  color: var(--primary);
  padding-left: 24px;
}

.mobile-nav__cta {
  margin-top: 24px;
}

/* ─── Hero ─── */
.hero {
  padding: 140px 0 100px;
  background: linear-gradient(135deg, #0a1628 0%, #0d2a3e 40%, #0a4a60 100%);
  position: relative;
  overflow: hidden;
  min-height: 90vh;
  display: flex;
  align-items: center;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 80%;
  height: 200%;
  background: radial-gradient(ellipse, rgba(10,110,138,0.3) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(to top, var(--white), transparent);
  pointer-events: none;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

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

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
  background: rgba(240,165,0,0.15);
  padding: 8px 16px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(240,165,0,0.3);
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
}

.hero__title span {
  color: var(--accent);
}

.hero__description {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.75);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 520px;
}

.hero__stats {
  display: flex;
  gap: 40px;
  margin-top: 50px;
  padding-top: 30px;
  border-top: 1px solid rgba(255,255,255,0.15);
}

.hero__stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
}

.hero__stat-label {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.6);
  margin-top: 6px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.hero__image-wrapper {
  position: relative;
}

.hero__image-container {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.hero__image {
  width: 100%;
  height: 480px;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

.hero__floating-card {
  position: absolute;
  bottom: -20px;
  left: -30px;
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 14px;
  animation: float 3s ease-in-out infinite;
}

.hero__floating-icon {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--white);
  flex-shrink: 0;
}

.hero__floating-text strong {
  display: block;
  font-size: 1.1rem;
  color: var(--secondary);
}

.hero__floating-text span {
  font-size: 0.8rem;
  color: var(--gray-400);
}

/* ─── Trust Bar ─── */
.trust-bar {
  background: var(--white);
  padding: 40px 0;
  border-bottom: 1px solid var(--gray-100);
}

.trust-bar__inner {
  display: flex;
  justify-content: center;
  gap: 60px;
  flex-wrap: wrap;
}

.trust-item {
  text-align: center;
}

.trust-item__number {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}

.trust-item__label {
  font-size: 0.85rem;
  color: var(--gray-400);
  margin-top: 6px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ─── Feature Cards ─── */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  text-align: center;
  border: 1px solid var(--gray-100);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  transform: scaleX(0);
  transition: transform var(--transition-normal);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.feature-card__icon {
  width: 70px;
  height: 70px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, rgba(10,110,138,0.1), rgba(10,110,138,0.05));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  transition: all var(--transition-normal);
}

.feature-card:hover .feature-card__icon {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  transform: scale(1.1) rotate(5deg);
}

.feature-card:hover .feature-card__icon svg {
  filter: brightness(0) invert(1);
}

.feature-card__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 10px;
}

.feature-card__text {
  font-size: 0.85rem;
  color: var(--gray-500);
  line-height: 1.7;
}

/* ─── Process Timeline ─── */
.process-timeline {
  display: flex;
  justify-content: space-between;
  position: relative;
  padding: 40px 0;
}

.process-timeline::before {
  content: '';
  position: absolute;
  top: 75px;
  left: 10%;
  right: 10%;
  height: 3px;
  background: var(--gray-200);
  z-index: 0;
}

.process-step {
  text-align: center;
  position: relative;
  z-index: 1;
  flex: 1;
  max-width: 160px;
}

.process-step__number {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
  box-shadow: 0 4px 15px rgba(10,110,138,0.3);
  position: relative;
}

.process-step__number::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid rgba(10,110,138,0.2);
}

.process-step__icon {
  font-size: 1.6rem;
  margin-bottom: 10px;
}

.process-step__title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 6px;
}

.process-step__text {
  font-size: 0.75rem;
  color: var(--gray-400);
  line-height: 1.5;
}

/* ─── Testimonial Card ─── */
.testimonial-card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 32px;
  border: 1px solid var(--gray-100);
  position: relative;
  transition: all var(--transition-normal);
}

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

.testimonial-card__quote {
  font-size: 3rem;
  color: var(--primary);
  opacity: 0.2;
  position: absolute;
  top: 16px;
  right: 24px;
  font-family: Georgia, serif;
  line-height: 1;
}

.testimonial-card__stars {
  display: flex;
  gap: 4px;
  margin-bottom: 16px;
  color: var(--accent);
  font-size: 1rem;
}

.testimonial-card__text {
  font-size: 0.95rem;
  color: var(--gray-500);
  line-height: 1.8;
  margin-bottom: 20px;
  font-style: italic;
}

.testimonial-card__author {
  display: flex;
  align-items: center;
  gap: 14px;
}

.testimonial-card__avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-weight: 700;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.testimonial-card__name {
  font-weight: 700;
  color: var(--secondary);
  font-size: 0.95rem;
}

.testimonial-card__course {
  font-size: 0.8rem;
  color: var(--gray-400);
}

/* ─── FAQ Accordion ─── */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--white);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  border: 1px solid var(--gray-100);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.faq-item:hover {
  border-color: var(--primary);
}

.faq-item.open {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--secondary);
  text-align: left;
  cursor: pointer;
  transition: all var(--transition-fast);
  background: var(--white);
}

.faq-question:hover {
  color: var(--primary);
}

.faq-question .faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--light-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-left: 16px;
  transition: all var(--transition-normal);
  font-size: 1.2rem;
  color: var(--primary);
}

.faq-item.open .faq-question .faq-icon {
  background: var(--primary);
  color: var(--white);
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}

.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 0.92rem;
  color: var(--gray-500);
  line-height: 1.8;
}

.faq-item.open .faq-answer {
  max-height: 300px;
}

/* ─── CTA Banner ─── */
.cta-banner {
  background: linear-gradient(135deg, var(--secondary) 0%, var(--primary-dark) 100%);
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(240,165,0,0.15), transparent);
  border-radius: 50%;
}

.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -100px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(10,110,138,0.2), transparent);
  border-radius: 50%;
}

.cta-banner__title {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  color: var(--white);
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}

.cta-banner__text {
  color: rgba(255,255,255,0.7);
  font-size: 1.05rem;
  margin-bottom: 32px;
  position: relative;
  z-index: 1;
}

.cta-banner .btn-group {
  position: relative;
  z-index: 1;
  justify-content: center;
}

/* ─── Footer ─── */
.footer {
  background: var(--dark);
  color: rgba(255,255,255,0.7);
  padding: 60px 0 0;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer__brand-name {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer__brand-desc {
  font-size: 0.9rem;
  line-height: 1.8;
  margin-bottom: 20px;
}

.footer__social {
  display: flex;
  gap: 12px;
}

.footer__social-link {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.6);
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.footer__social-link:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-3px);
}

.footer__heading {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.footer__links li {
  margin-bottom: 10px;
}

.footer__links a {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.6);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 6px;
}

.footer__links a:hover {
  color: var(--accent);
  padding-left: 6px;
}

.footer__contact-item {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 0.88rem;
}

.footer__contact-icon {
  width: 36px;
  height: 36px;
  background: rgba(255,255,255,0.08);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 0.9rem;
}

.footer__bottom {
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.4);
  flex-wrap: wrap;
  gap: 12px;
}

/* ─── Form Elements ─── */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--secondary);
  margin-bottom: 8px;
}

.form-label .required {
  color: var(--danger);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 14px 16px;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  color: var(--dark);
  background: var(--white);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(10,110,138,0.1);
}

.form-input.error,
.form-select.error,
.form-textarea.error {
  border-color: var(--danger);
  box-shadow: 0 0 0 4px rgba(220,53,69,0.1);
}

.form-error {
  font-size: 0.8rem;
  color: var(--danger);
  margin-top: 6px;
  display: none;
}

.form-error.visible {
  display: block;
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

/* ─── Badge / Tag ─── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge--primary { background: rgba(10,110,138,0.1); color: var(--primary); }
.badge--accent { background: rgba(240,165,0,0.1); color: var(--accent); }
.badge--success { background: rgba(40,167,69,0.1); color: var(--success); }
.badge--warning { background: rgba(255,193,7,0.1); color: #b8860b; }

/* ─── Lightbox ─── */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.9);
  z-index: var(--z-modal);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 40px;
}

.lightbox.open {
  display: flex;
  animation: fadeIn 0.3s ease;
}

.lightbox__image {
  max-width: 90%;
  max-height: 85vh;
  object-fit: contain;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
}

.lightbox__close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 48px;
  height: 48px;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.5rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.lightbox__close:hover {
  background: rgba(255,255,255,0.2);
  transform: rotate(90deg);
}

.lightbox__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.3rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.lightbox__nav:hover { background: rgba(255,255,255,0.2); }
.lightbox__prev { left: 20px; }
.lightbox__next { right: 20px; }

.lightbox__caption {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,0.8);
  font-size: 0.9rem;
  text-align: center;
  background: rgba(0,0,0,0.5);
  padding: 8px 20px;
  border-radius: var(--radius-full);
}

/* ─── WhatsApp Float ─── */
.whatsapp-float {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: var(--z-overlay);
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
}

.whatsapp-float__tooltip {
  background: var(--white);
  color: var(--dark);
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  font-size: 0.85rem;
  font-weight: 600;
  opacity: 0;
  transform: translateY(10px);
  transition: all var(--transition-fast);
  pointer-events: none;
  white-space: nowrap;
}

.whatsapp-float:hover .whatsapp-float__tooltip {
  opacity: 1;
  transform: translateY(0);
}

.whatsapp-float__btn {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: #25d366;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(37,211,102,0.4);
  transition: all var(--transition-normal);
  color: white;
  font-size: 1.8rem;
}

.whatsapp-float__btn:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 30px rgba(37,211,102,0.5);
}

.whatsapp-float__btn::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid rgba(37,211,102,0.3);
  animation: pulse-ring 2s infinite;
}

/* ─── Dashboard Styles ─── */
.dashboard-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
  background: var(--light-bg);
}

.dashboard-sidebar {
  background: var(--secondary);
  padding: 24px 0;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.dashboard-sidebar__brand {
  padding: 0 20px 24px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 16px;
}

.dashboard-sidebar__nav {}

.dashboard-sidebar__item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.dashboard-sidebar__item:hover,
.dashboard-sidebar__item.active {
  color: var(--white);
  background: rgba(255,255,255,0.08);
}

.dashboard-sidebar__item.active {
  border-left: 3px solid var(--accent);
}

.dashboard-main {
  padding: 30px;
  overflow-y: auto;
}

.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 30px;
}

.dashboard-header__title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--secondary);
}

.stat-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 30px;
}

.stat-card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 24px;
  border: 1px solid var(--gray-100);
  transition: all var(--transition-normal);
}

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

.stat-card__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
}

.stat-card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
}

.stat-card__value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--secondary);
  line-height: 1;
}

.stat-card__label {
  font-size: 0.82rem;
  color: var(--gray-400);
  margin-top: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Chart placeholder */
.chart-container {
  background: var(--white);
  border-radius: var(--ratio-md);
  padding: 24px;
  border: 1px solid var(--gray-100);
  margin-bottom: 24px;
}

.chart-container__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 20px;
}

.bar-chart {
  display: flex;
  align-items: flex-end;
  gap: 12px;
  height: 200px;
  padding-top: 20px;
}

.bar-chart__bar {
  flex: 1;
  background: linear-gradient(to top, var(--primary), var(--primary-light));
  border-radius: 4px 4px 0 0;
  position: relative;
  transition: all var(--transition-normal);
  min-height: 10px;
}

.bar-chart__bar:hover {
  background: linear-gradient(to top, var(--primary-dark), var(--primary));
  transform: scaleY(1.05);
}

.bar-chart__label {
  position: absolute;
  bottom: -24px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.7rem;
  color: var(--gray-400);
  white-space: nowrap;
}

.bar-chart__value {
  position: absolute;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--secondary);
}

/* Donut chart pure CSS */
.donut-chart {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: conic-gradient(
    var(--primary) 0deg 200deg,
    var(--accent) 200deg 280deg,
    var(--gray-200) 280deg 360deg
  );
  position: relative;
  margin: 0 auto;
}

.donut-chart::after {
  content: '';
  position: absolute;
  inset: 30px;
  background: var(--white);
  border-radius: 50%;
}

.donut-chart__center {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 1;
}

.donut-chart__value {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--secondary);
  line-height: 1;
}

.donut-chart__label {
  font-size: 0.7rem;
  color: var(--gray-400);
  text-transform: uppercase;
}

/* Progress bar */
.progress-bar {
  height: 8px;
  background: var(--gray-100);
  border-radius: 4px;
  overflow: hidden;
}

.progress-bar__fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  border-radius: 4px;
  transition: width 1s ease;
}

/* Table */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.data-table th {
  text-align: left;
  padding: 12px 16px;
  font-weight: 600;
  color: var(--gray-500);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 2px solid var(--gray-100);
  background: var(--light-bg);
}

.data-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--gray-100);
  color: var(--dark);
}

.data-table tr:hover td {
  background: rgba(10,110,138,0.03);
}

/* ─── Admission Steps ─── */
.admission-steps {
  display: flex;
  justify-content: center;
  gap: 0;
  margin-bottom: 40px;
  position: relative;
}

.admission-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  flex: 1;
  max-width: 160px;
}

.admission-step::before {
  content: '';
  position: absolute;
  top: 20px;
  left: 60%;
  right: -60%;
  height: 3px;
  background: var(--gray-200);
  z-index: 0;
}

.admission-step:first-child::before {
  display: none;
}

.admission-step.completed::before {
  background: var(--primary);
}

.admission-step__number {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gray-200);
  color: var(--gray-400);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  position: relative;
  z-index: 1;
  transition: all var(--transition-normal);
}

.admission-step.active .admission-step__number {
  background: var(--primary);
  color: var(--white);
  box-shadow: 0 4px 12px rgba(10,110,138,0.3);
}

.admission-step.completed .admission-step__number {
  background: var(--success);
  color: var(--white);
}

.admission-step__label {
  font-size: 0.78rem;
  color: var(--gray-400);
  margin-top: 10px;
  text-align: center;
  font-weight: 500;
}

.admission-step.active .admission-step__label,
.admission-step.completed .admission-step__label {
  color: var(--secondary);
  font-weight: 600;
}

/* Step content */
.step-content {
  display: none;
  animation: fadeIn 0.4s ease;
}

.step-content.active {
  display: block;
}

/* ─── Gallery Filter ─── */
.gallery-filter {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}

.gallery-filter__btn {
  padding: 8px 20px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gray-500);
  background: var(--white);
  border: 2px solid var(--gray-100);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.gallery-filter__btn:hover,
.gallery-filter__btn.active {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.gallery-item {
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  position: relative;
  aspect-ratio: 4/3;
  transition: all var(--transition-normal);
}

.gallery-item:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-lg);
}

.gallery-item.hidden {
  display: none;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.gallery-item:hover img {
  transform: scale(1.1);
}

.gallery-item__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
  display: flex;
  align-items: flex-end;
  padding: 20px;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.gallery-item:hover .gallery-item__overlay {
  opacity: 1;
}

.gallery-item__caption {
  color: var(--white);
  font-weight: 600;
  font-size: 0.9rem;
}

/* ─── Certificate Verify ─── */
.verify-section {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.verify-form {
  display: flex;
  gap: 12px;
  margin-bottom: 24px;
}

.verify-form input {
  flex: 1;
  padding: 16px 20px;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-md);
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-weight: 600;
}

.verify-form input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(10,110,138,0.1);
}

.verify-result {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 32px;
  border: 2px solid var(--gray-100);
  text-align: left;
  display: none;
}

.verify-result.success {
  display: block;
  border-color: var(--success);
  background: linear-gradient(135deg, rgba(40,167,69,0.05), rgba(40,167,69,0.02));
}

.verify-result.error {
  display: block;
  border-color: var(--danger);
  background: linear-gradient(135deg, rgba(220,53,69,0.05), rgba(220,53,69,0.02));
}

.verify-result__header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--gray-100);
}

.verify-result__status {
  font-size: 1.1rem;
  font-weight: 700;
}

.verify-result__status.verified { color: var(--success); }
.verify-result__status.not-found { color: var(--danger); }

.verify-field {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--gray-100);
  font-size: 0.9rem;
}

.verify-field:last-child {
  border-bottom: none;
}

.verify-field__label {
  color: var(--gray-500);
  font-weight: 500;
}

.verify-field__value {
  color: var(--dark);
  font-weight: 600;
}

/* ─── Toast Notification ─── */
.toast-container {
  position: fixed;
  top: 90px;
  right: 20px;
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  background: var(--white);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 280px;
  max-width: 400px;
  animation: slideInRight 0.3s ease;
  border-left: 4px solid var(--primary);
}

.toast.success { border-left-color: var(--success); }
.toast.error { border-left-color: var(--danger); }
.toast.warning { border-left-color: var(--warning); }

.toast__message {
  flex: 1;
  font-size: 0.9rem;
  color: var(--dark);
}

.toast__close {
  background: none;
  border: none;
  color: var(--gray-400);
  cursor: pointer;
  font-size: 1.2rem;
  padding: 4px;
}

/* ─── Page Header ─── */
.page-header {
  padding: 120px 0 60px;
  background: linear-gradient(135deg, var(--secondary) 0%, var(--primary-dark) 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 60%;
  height: 200%;
  background: radial-gradient(ellipse, rgba(10,110,138,0.3), transparent);
}

.page-header__title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 2.8rem);
  color: var(--white);
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.page-header__breadcrumb {
  display: flex;
  justify-content: center;
  gap: 8px;
  font-size: 0.88rem;
  color: rgba(255,255,255,0.6);
  position: relative;
  z-index: 1;
}

.page-header__breadcrumb a {
  color: var(--accent);
}

.page-header__breadcrumb a:hover {
  text-decoration: underline;
}

/* ─── Contact Info Cards ─── */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  margin-bottom: 40px;
}

.contact-info-card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 28px;
  text-align: center;
  border: 1px solid var(--gray-100);
  transition: all var(--transition-normal);
}

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

.contact-info-card__icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, rgba(10,110,138,0.1), rgba(10,110,138,0.05));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--primary);
}

.contact-info-card__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 8px;
}

.contact-info-card__text {
  font-size: 0.88rem;
  color: var(--gray-500);
  line-height: 1.6;
}

/* ─── Map Placeholder ─── */
.map-placeholder {
  width: 100%;
  height: 350px;
  background: linear-gradient(135deg, var(--gray-100), var(--gray-200));
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--gray-400);
  font-size: 0.9rem;
  margin-bottom: 40px;
}

.map-placeholder__icon {
  font-size: 3rem;
  opacity: 0.5;
}

/* ─── Course Detail Page ─── */
.course-detail-hero {
  background: linear-gradient(135deg, var(--secondary), var(--primary-dark));
  padding: 120px 0 60px;
  color: var(--white);
}

.course-detail-meta {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  margin-top: 20px;
}

.course-detail-meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.8);
}

.course-detail-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 40px;
  padding: 60px 0;
}

.course-detail-sidebar {
  position: sticky;
  top: 90px;
  height: fit-content;
}

.sidebar-card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 28px;
  border: 1px solid var(--gray-100);
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
}

.sidebar-card__title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--gray-100);
}

/* ─── Utility Classes ─── */
.text-center { text-align: center; }
.text-primary { color: var(--primary); }
.text-accent { color: var(--accent); }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }

/* ─── Responsive Wrapper ─── */
@media (max-width: 1023px) {
  .navbar__menu { display: none; }
  .navbar__cta { display: none; }
  .navbar__toggle { display: flex; }
  .hero__inner { grid-template-columns: 1fr; text-align: center; }
  .hero__description { margin: 0 auto 36px; }
  .hero__stats { justify-content: center; }
  .hero__image-wrapper { display: none; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .process-timeline { flex-wrap: wrap; gap: 20px; justify-content: center; }
  .process-timeline::before { display: none; }
  .footer__grid { grid-template-columns: repeat(2, 1fr); }
  .dashboard-layout { grid-template-columns: 1fr; }
  .dashboard-sidebar { display: none; }
  .course-detail-content { grid-template-columns: 1fr; }
  .course-detail-sidebar { position: static; }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
}