/* ============================================
   KEYSTONE ENGLISH — Brand Stylesheet
   Brand Gold: #FBAC00 | Dark Charcoal: #2A2F34
   Fonts: Poppins, Barlow, Playfair Display
   ============================================ */

/* ---------- RESET & BASE ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: 'Poppins', 'Barlow', Arial, Helvetica, sans-serif;
  color: #2A2F34;
  background: #ffffff;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
h1, h2, h3, h4, h5, h6 { font-family: 'Poppins', sans-serif; font-weight: 700; line-height: 1.2; }

/* ---------- VARIABLES ---------- */
:root {
  --brand-gold: #FBAC00;
  --brand-gold-hover: #e09a00;
  --dark: #2A2F34;
  --dark-light: #3a4046;
  --white: #FFFFFF;
  --light-bg: #F5F5F5;
  --blue: #2196F3;
  --blue-dark: #0064D1;
  --text-body: #555;
  --text-muted: #777;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.12);
  --radius: 10px;
  --radius-lg: 16px;
  --transition: 0.3s ease;
  --max-width: 1140px;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- NAVBAR ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--white);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.navbar__logo img {
  height: 42px;
  width: auto;
}

.navbar__logo-text {
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--dark);
  line-height: 1.2;
}

.navbar__logo-text span {
  display: block;
  font-size: 0.7rem;
  font-weight: 400;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

.navbar__links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.navbar__links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--dark);
  transition: color var(--transition);
  position: relative;
}

.navbar__links a:hover,
.navbar__links a.active {
  color: var(--blue);
}

.navbar__links a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--blue);
  border-radius: 2px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  border-radius: 6px;
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn--gold {
  background: var(--brand-gold);
  color: var(--white);
  border-color: var(--brand-gold);
}
.btn--gold:hover {
  background: var(--brand-gold-hover);
  border-color: var(--brand-gold-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(251,172,0,0.35);
}

.btn--blue {
  background: var(--blue);
  color: var(--white);
  border-color: var(--blue);
}
.btn--blue:hover {
  background: var(--blue-dark);
  border-color: var(--blue-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(33,150,243,0.35);
}

.btn--outline {
  background: transparent;
  color: var(--dark);
  border-color: var(--dark);
}
.btn--outline:hover {
  background: var(--dark);
  color: var(--white);
}

.btn--lg {
  padding: 14px 32px;
  font-size: 1.05rem;
}

.btn--sm {
  padding: 8px 18px;
  font-size: 0.85rem;
}

/* Hamburger */
.navbar__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.navbar__hamburger span {
  display: block;
  width: 26px;
  height: 3px;
  background: var(--dark);
  border-radius: 2px;
  transition: var(--transition);
}

/* ---------- HERO SECTION ---------- */
.hero {
  margin-top: 70px;
  padding: 80px 0 60px;
  background: var(--white);
  position: relative;
  overflow: hidden;
}

.hero .container {
  display: flex;
  align-items: center;
  gap: 48px;
}

.hero__content {
  flex: 1;
  max-width: 540px;
}

.hero__content h1 {
  font-size: 2.6rem;
  color: var(--dark);
  margin-bottom: 20px;
  line-height: 1.15;
}

.hero__content h1 span.text-blue {
  color: var(--blue);
}

.hero__subtitle {
  font-size: 1.05rem;
  color: var(--text-body);
  margin-bottom: 12px;
  line-height: 1.7;
}

.hero__cta-note {
  font-size: 0.95rem;
  color: var(--text-body);
  margin-bottom: 24px;
  font-style: italic;
}

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

.hero__image {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero__image img {
  max-width: 480px;
  width: 100%;
  border-radius: var(--radius-lg);
}

/* ---------- SECTIONS (SHARED) ---------- */
.section {
  padding: 80px 0;
}

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

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

.section-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--blue);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 8px;
}

.section-heading {
  font-size: 2rem;
  color: var(--dark);
  margin-bottom: 20px;
}

.section-text {
  font-size: 1rem;
  color: var(--text-body);
  line-height: 1.75;
  max-width: 640px;
}

/* ---------- ABOUT SECTION ---------- */
.about__grid {
  display: flex;
  align-items: center;
  gap: 60px;
}

.about__image {
  flex: 0 0 320px;
  display: flex;
  justify-content: center;
}

.about__image img {
  max-height: 440px;
  width: auto;
  filter: drop-shadow(0 8px 24px rgba(0,0,0,0.1));
}

.about__content {
  flex: 1;
}

.about__checklist {
  margin-top: 24px;
}

.about__checklist li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  font-size: 1rem;
  color: var(--dark);
  font-weight: 500;
}

.about__checklist li .check-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--brand-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.about__checklist li .check-icon svg {
  width: 14px;
  height: 14px;
  fill: var(--white);
}

/* ---------- WE OFFER SECTION ---------- */
.offer__grid {
  display: flex;
  align-items: center;
  gap: 60px;
}

.offer__content {
  flex: 1;
}

.offer__image {
  flex: 0 0 300px;
  display: flex;
  justify-content: center;
}

.offer__image img {
  max-height: 400px;
  width: auto;
  filter: drop-shadow(0 8px 24px rgba(0,0,0,0.1));
}

.stats {
  display: flex;
  gap: 32px;
  margin-top: 32px;
}

.stat-circle {
  text-align: center;
}

.stat-circle__ring {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  border: 4px solid #ddd;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 8px;
  position: relative;
}

.stat-circle__ring::before {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 4px solid transparent;
}

.stat-circle--85 .stat-circle__ring {
  border-color: var(--blue);
  background: rgba(33,150,243,0.06);
}

.stat-circle--90 .stat-circle__ring {
  border-color: var(--blue);
  background: rgba(33,150,243,0.06);
}

.stat-circle--100 .stat-circle__ring {
  border-color: var(--brand-gold);
  background: rgba(251,172,0,0.06);
}

.stat-circle__value {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--dark);
}

.stat-circle__label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* ---------- PACKAGES SECTION ---------- */
.packages__notice {
  background: #fff3f3;
  border: 1px solid #ffcccc;
  color: #c0392b;
  padding: 14px 20px;
  border-radius: var(--radius);
  text-align: center;
  margin-bottom: 40px;
  font-size: 0.95rem;
  font-weight: 500;
}

.packages__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.package-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  border: 2px solid transparent;
  position: relative;
}

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

.package-card--featured {
  background: var(--blue);
  color: var(--white);
  border-color: var(--blue);
}

.package-card--featured .package-card__price,
.package-card--featured .package-card__name,
.package-card--featured .package-card__detail {
  color: var(--white);
}

.package-card__name {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}

.package-card__price {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 20px;
}

.package-card__price span {
  font-size: 1rem;
  font-weight: 400;
}

.package-card__details {
  margin-bottom: 24px;
}

.package-card__detail {
  font-size: 0.9rem;
  color: var(--text-body);
  padding: 8px 0;
  border-bottom: 1px solid rgba(0,0,0,0.06);
}

.package-card--featured .package-card__detail {
  border-bottom-color: rgba(255,255,255,0.15);
}

.package-card__btn {
  width: 100%;
}

.package-card--featured .btn--blue {
  background: var(--white);
  color: var(--blue);
  border-color: var(--white);
}

.package-card--featured .btn--blue:hover {
  background: var(--light-bg);
  color: var(--blue-dark);
}

/* ---------- CONTACT SECTION ---------- */
.contact__grid {
  display: flex;
  align-items: center;
  gap: 60px;
}

.contact__form-wrapper {
  flex: 1;
  max-width: 480px;
}

.contact__form {
  background: var(--light-bg);
  padding: 36px;
  border-radius: var(--radius-lg);
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--dark);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid #ddd;
  border-radius: 6px;
  font-family: 'Poppins', sans-serif;
  font-size: 0.95rem;
  color: var(--dark);
  transition: border-color var(--transition);
  background: var(--white);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--brand-gold);
  box-shadow: 0 0 0 3px rgba(251,172,0,0.15);
}

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

.contact__image {
  flex: 0 0 320px;
  display: flex;
  justify-content: center;
}

.contact__image img {
  max-height: 420px;
  width: auto;
  filter: drop-shadow(0 8px 24px rgba(0,0,0,0.1));
}

/* ---------- FOOTER ---------- */
.footer {
  background: var(--white);
  border-top: 1px solid #eee;
  padding: 60px 0 30px;
  text-align: center;
}

.footer__character {
  margin: 0 auto 20px;
}

.footer__character img {
  max-height: 160px;
  width: auto;
  margin: 0 auto;
}

.footer__logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 8px;
}

.footer__logo img {
  height: 48px;
  width: auto;
}

.footer__logo-text {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--dark);
}

.footer__tagline {
  font-size: 1rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 16px;
}

.footer__email {
  font-size: 0.95rem;
  color: var(--text-body);
  margin-bottom: 20px;
}

.footer__email a {
  color: var(--text-body);
  transition: color var(--transition);
}

.footer__email a:hover {
  color: var(--brand-gold);
}

.footer__social {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 28px;
}

.footer__social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--brand-gold);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 700;
  transition: all var(--transition);
}

.footer__social a:hover {
  background: var(--brand-gold-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(251,172,0,0.35);
}

.footer__social a svg {
  width: 18px;
  height: 18px;
  fill: var(--white);
}

.footer__copyright {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ---------- ANIMATIONS ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 992px) {
  .hero .container {
    flex-direction: column;
    text-align: center;
  }

  .hero__content { max-width: 100%; }

  .hero__actions {
    justify-content: center;
  }

  .hero__image img { max-width: 380px; }

  .about__grid {
    flex-direction: column;
    text-align: center;
  }

  .about__image { flex: none; }

  .about__checklist li { justify-content: center; }

  .offer__grid {
    flex-direction: column;
    text-align: center;
  }

  .offer__image { flex: none; order: -1; }

  .stats { justify-content: center; }

  .packages__grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }

  .contact__grid {
    flex-direction: column;
    text-align: center;
  }

  .contact__form-wrapper { max-width: 100%; }
  .contact__image { flex: none; order: -1; }
}

@media (max-width: 768px) {
  .navbar__links { display: none; }
  .navbar__hamburger { display: flex; }

  .navbar__links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--white);
    padding: 20px 24px;
    box-shadow: var(--shadow-md);
    gap: 16px;
  }

  .hero__content h1 { font-size: 2rem; }
  .section-heading { font-size: 1.6rem; }
}

@media (max-width: 480px) {
  .hero { padding: 60px 0 40px; }
  .section { padding: 60px 0; }
  .hero__content h1 { font-size: 1.7rem; }
  .stats { gap: 20px; }
  .stat-circle__ring { width: 64px; height: 64px; }
  .stat-circle__value { font-size: 1.1rem; }
}