:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f2f6f3;
  --color-accent: #0f6f39;
  --color-accent-dark: #0b5129;
  --color-navy: #1f2a5c;
  --color-text: #262626;
  --color-text-muted: #5c5c5c;
  --color-card: #ffffff;
  --color-border: #e2e6e3;
  --radius: 8px;
  --max-width: 1100px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Assistant", "Segoe UI", Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 60px 20px;
}

h1, h2, h3 { margin: 0 0 16px; }

/* Header */
.site-header {
  background: #ffffff;
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  color: var(--color-navy);
  font-weight: bold;
  font-size: 1.2rem;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  background: #fff;
}

.lang-switcher {
  display: flex;
  gap: 4px;
  margin-inline-start: 12px;
}

.lang-btn {
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid var(--color-border);
  background: #fff;
  color: var(--color-text-muted);
  font-size: 0.8rem;
  cursor: pointer;
  font-family: inherit;
}

.lang-btn.active {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

@media (max-width: 768px) {
  .lang-switcher { margin-inline-start: auto; margin-inline-end: 8px; }
}

/* Floating WhatsApp CTA */
.whatsapp-fab {
  position: fixed;
  bottom: 20px;
  inset-inline-end: 20px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #25d366;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(0,0,0,0.3);
  z-index: 9998;
}

.whatsapp-fab:hover { background: #1ebe5a; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-navy);
  font-size: 1.5rem;
  cursor: pointer;
}

.main-nav > ul {
  list-style: none;
  display: flex;
  gap: 24px;
  margin: 0;
  padding: 0;
}

.main-nav a {
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.95rem;
}

.main-nav a:hover { color: var(--color-accent); }

.has-sub { position: relative; }

.sub-nav {
  display: none;
  flex-direction: column;
  position: absolute;
  top: 100%;
  right: 0;
  background: var(--color-card);
  list-style: none;
  padding: 8px 0;
  min-width: 180px;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  box-shadow: 0 8px 20px rgba(0,0,0,0.08);
}

.has-sub:hover .sub-nav { display: flex; }

.sub-nav li a { display: block; padding: 8px 16px; }

/* Hero */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(135deg, var(--color-navy), var(--color-accent));
  padding: 40px 20px;
  color: #fff;
}

.hero-content h1 { font-size: 2.4rem; color: #fff; }
.hero-content p { color: rgba(255,255,255,0.85); margin-bottom: 24px; }

/* Stats strip */
.stats-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 16px;
  padding-top: 32px;
  padding-bottom: 32px;
  text-align: center;
}

.stat-item { display: flex; flex-direction: column; gap: 4px; }

.stat-value { font-size: 2rem; font-weight: 700; color: var(--color-accent); }
.stat-label { font-size: 0.85rem; color: var(--color-text-muted); }

/* Values */
.values { text-align: center; }
.values .cards { text-align: start; }

/* Schedule table */
.schedule-table-wrap { overflow-x: auto; }

.schedule-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 480px;
}

.schedule-table th,
.schedule-table td {
  padding: 12px 16px;
  text-align: start;
  border-bottom: 1px solid var(--color-border);
}

.schedule-table th {
  background: var(--color-bg-alt);
  color: var(--color-navy);
  font-weight: 700;
}

.schedule-table tbody tr:hover { background: var(--color-bg-alt); }

.instructor-bio { color: var(--color-text-muted); margin-top: 8px; }

.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 600;
  transition: transform 0.15s ease, opacity 0.15s ease;
}

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

.btn-primary:hover { opacity: 0.9; transform: translateY(-1px); }

/* Welcome */
.welcome { text-align: center; }
.welcome p { color: var(--color-text-muted); max-width: 800px; margin: 0 auto 16px; }

/* Instructor */
.instructor-card {
  display: flex;
  gap: 32px;
  align-items: center;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px;
  flex-wrap: wrap;
}

.instructor-photo {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: #d9dfda;
  flex-shrink: 0;
  object-fit: cover;
}

.instructor-info h3 { color: var(--color-navy); }
.instructor-info .role { color: var(--color-text-muted); margin: 4px 0; }
.link-more { color: var(--color-accent); text-decoration: none; font-weight: 600; }

/* Groups */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
}

.card h3 { color: var(--color-navy); }

.card-img {
  width: 100%;
  height: 160px;
  background: #d9dfda;
  border-radius: var(--radius);
  margin-bottom: 16px;
}

.card p { color: var(--color-text-muted); }
.card-phone { color: var(--color-accent); text-decoration: none; font-weight: 600; }

/* Gallery */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
}

.gallery-item {
  aspect-ratio: 1 / 1;
  background: #d9dfda;
  border-radius: var(--radius);
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 40px;
}

.contact-info ul {
  list-style: none;
  padding: 0;
  margin: 0 0 20px;
}

.contact-info li { margin-bottom: 10px; color: var(--color-text-muted); }
.contact-info a { color: var(--color-text); }

.social-links { display: flex; gap: 16px; }
.social-links a { color: var(--color-accent); text-decoration: none; font-weight: 600; }

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  padding: 24px;
  border-radius: var(--radius);
}

.contact-form label { font-size: 0.85rem; color: var(--color-text-muted); margin-top: 10px; }

.contact-form input,
.contact-form textarea {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 10px 12px;
  color: var(--color-text);
  font-family: inherit;
}

.contact-form button {
  margin-top: 16px;
  border: none;
  cursor: pointer;
  background: var(--color-accent);
  color: #fff;
}

.form-note { color: var(--color-accent-dark); margin-top: 12px; }

/* Footer */
.site-footer {
  background: var(--color-navy);
}

.footer-inner {
  padding: 24px 20px;
  text-align: center;
  color: rgba(255,255,255,0.75);
  font-size: 0.9rem;
}

.footer-a11y-link {
  display: inline-block;
  margin-top: 8px;
  color: #fff;
  text-decoration: underline;
  font-size: 0.85rem;
}

/* Subpages */
.page-hero {
  background: linear-gradient(135deg, var(--color-navy), var(--color-accent));
  padding: 50px 20px;
  text-align: center;
  color: #fff;
}

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

.page-content p,
.page-content li { color: var(--color-text-muted); }

.page-content h2 { color: var(--color-navy); margin-top: 32px; }

.page-content ul,
.page-content ol { padding-inline-start: 24px; }

.dojo-kun-list { display: flex; flex-direction: column; gap: 12px; }
.dojo-kun-list strong { color: var(--color-navy); }

/* Responsive */
@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .main-nav {
    display: none;
    width: 100%;
  }
  .main-nav.open { display: block; }
  .main-nav ul {
    flex-direction: column;
    gap: 0;
  }
  .main-nav > ul > li { border-top: 1px solid var(--color-border); }
  .main-nav a { display: block; padding: 12px 0; }
  .sub-nav { position: static; box-shadow: none; }
  .header-inner { flex-wrap: wrap; }
  .contact-grid { grid-template-columns: 1fr; }
  .instructor-card { justify-content: center; text-align: center; }
}