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

:root {
  --white: #ffffff;
  --off-white: #f7f7f5;
  --black: #111111;
  --charcoal: #2e2e2e;
  --charcoal-dark: #1a1a1a;
  --gray: #888888;
  --light-gray: #e8e8e8;
  --border: #dddddd;
  --surface: #f2f2f0;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Georgia', serif;
  background: var(--white);
  color: var(--black);
  line-height: 1.6;
}

/* NAV */
nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 3rem;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--white);
  z-index: 100;
}

.logo {
  font-size: 1.1rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-family: 'Arial', sans-serif;
  font-weight: 700;
  text-decoration: none;
  color: var(--black);
}

.logo span { color: var(--gray); }

nav ul { display: flex; gap: 2rem; list-style: none; }

nav a {
  color: var(--gray);
  text-decoration: none;
  font-family: 'Arial', sans-serif;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: color 0.2s;
}

nav a:hover, nav a.active { color: var(--black); }
nav a.active { border-bottom: 1px solid var(--charcoal); padding-bottom: 2px; }

.nav-cta {
  background: var(--charcoal);
  color: white !important;
  padding: 0.5rem 1.25rem;
  border-radius: 2px;
  font-family: 'Arial', sans-serif;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  transition: background 0.2s;
}

.nav-cta:hover { background: var(--charcoal-dark) !important; }

/* BUTTONS */
.btn {
  display: inline-block;
  padding: 0.85rem 2rem;
  font-family: 'Arial', sans-serif;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid var(--charcoal);
  color: var(--white);
  background: var(--charcoal);
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}

.btn:hover { background: var(--charcoal-dark); border-color: var(--charcoal-dark); }

.btn-ghost {
  background: transparent;
  color: var(--gray);
  border-color: var(--light-gray);
}

.btn-ghost:hover { border-color: var(--charcoal); color: var(--black); background: transparent; }

/* LABELS */
.section-label {
  font-family: 'Arial', sans-serif;
  font-size: 0.68rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 1rem;
}

/* PAGE HERO */
.page-hero {
  padding: 5rem 3rem 4rem;
  border-bottom: 1px solid var(--border);
  background: var(--off-white);
}

.page-hero h1 {
  font-size: clamp(2.5rem, 4vw, 3.8rem);
  font-weight: normal;
  line-height: 1.1;
  margin-bottom: 1rem;
  color: var(--black);
}

.page-hero h1 em { font-style: italic; color: var(--gray); }

.page-hero p {
  font-family: 'Arial', sans-serif;
  font-size: 0.95rem;
  color: var(--gray);
  max-width: 500px;
  line-height: 1.7;
}

/* FOOTER */
footer {
  border-top: 1px solid var(--border);
  background: var(--off-white);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 3rem;
  padding: 3rem;
  align-items: start;
}

.footer-inner p {
  font-family: 'Arial', sans-serif;
  font-size: 0.8rem;
  color: var(--gray);
  margin-bottom: 0.3rem;
}

.footer-links { display: flex; flex-direction: column; gap: 0.75rem; }

.footer-links a {
  font-family: 'Arial', sans-serif;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-links a:hover { color: var(--black); }

.footer-bar {
  border-top: 1px solid var(--border);
  padding: 1rem 3rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bar p {
  font-family: 'Arial', sans-serif;
  font-size: 0.7rem;
  color: #aaa;
}

/* CHAT WIDGET */
#chat-bubble {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 52px;
  height: 52px;
  background: var(--charcoal);
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: transform 0.2s, background 0.2s;
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

#chat-bubble:hover { background: var(--charcoal-dark); transform: scale(1.05); }
#chat-bubble svg { width: 24px; height: 24px; fill: white; }

#chat-window {
  position: fixed;
  bottom: 5.5rem;
  right: 2rem;
  width: 360px;
  height: 500px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  z-index: 9998;
  overflow: hidden;
  transition: opacity 0.2s, transform 0.2s;
  transform-origin: bottom right;
  box-shadow: 0 8px 40px rgba(0,0,0,0.12);
}

#chat-window.hidden { opacity: 0; transform: scale(0.92); pointer-events: none; }

.chat-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--off-white);
}

.chat-avatar {
  width: 34px; height: 34px;
  background: var(--charcoal);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: 'Arial', sans-serif;
  font-size: 0.75rem; font-weight: 700; color: white; flex-shrink: 0;
}

.chat-header-name { font-family: 'Arial', sans-serif; font-size: 0.85rem; font-weight: 600; color: var(--black); }
.chat-header-status { font-family: 'Arial', sans-serif; font-size: 0.7rem; color: #4caf50; display: flex; align-items: center; gap: 4px; }
.status-dot { width: 6px; height: 6px; background: #4caf50; border-radius: 50%; }

.chat-messages { flex: 1; overflow-y: auto; padding: 1rem; display: flex; flex-direction: column; gap: 0.75rem; background: var(--white); }
.chat-messages::-webkit-scrollbar { width: 4px; }
.chat-messages::-webkit-scrollbar-thumb { background: var(--light-gray); border-radius: 2px; }

.msg { max-width: 85%; padding: 0.65rem 0.9rem; border-radius: 10px; font-family: 'Arial', sans-serif; font-size: 0.83rem; line-height: 1.5; }
.msg-bot { background: var(--off-white); color: var(--black); align-self: flex-start; border-bottom-left-radius: 3px; border: 1px solid var(--border); }
.msg-user { background: var(--charcoal); color: white; align-self: flex-end; border-bottom-right-radius: 3px; }
.msg-typing { background: var(--off-white); align-self: flex-start; border-bottom-left-radius: 3px; padding: 0.75rem 1rem; border: 1px solid var(--border); }

.typing-dots { display: flex; gap: 4px; align-items: center; }
.typing-dots span { width: 6px; height: 6px; background: var(--gray); border-radius: 50%; animation: bounce 1.2s infinite; }
.typing-dots span:nth-child(2) { animation-delay: 0.2s; }
.typing-dots span:nth-child(3) { animation-delay: 0.4s; }
@keyframes bounce { 0%,60%,100%{transform:translateY(0);}30%{transform:translateY(-5px);} }

.chat-input-area { padding: 0.85rem; border-top: 1px solid var(--border); display: flex; gap: 8px; background: var(--off-white); }

#chat-input {
  flex: 1; background: var(--white); border: 1px solid var(--border); border-radius: 8px;
  padding: 0.55rem 0.85rem; color: var(--black);
  font-family: 'Arial', sans-serif; font-size: 0.83rem;
  outline: none; resize: none; transition: border-color 0.2s;
}

#chat-input:focus { border-color: var(--charcoal); }
#chat-input::placeholder { color: #bbb; }

#chat-send {
  width: 36px; height: 36px; background: var(--charcoal); border: none; border-radius: 8px;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; transition: background 0.2s; align-self: flex-end;
}

#chat-send:hover { background: var(--charcoal-dark); }
#chat-send svg { width: 16px; height: 16px; fill: white; }

.chat-disclaimer { text-align: center; font-family: 'Arial', sans-serif; font-size: 0.62rem; color: #aaa; padding: 0.4rem 1rem 0.6rem; background: var(--off-white); }

/* MOBILE */
@media (max-width: 768px) {
  nav { padding: 1rem 1.25rem; flex-wrap: wrap; gap: 0.75rem; }
  nav ul { order: 3; width: 100%; flex-wrap: wrap; gap: 0.75rem 1.25rem; padding: 0.5rem 0; border-top: 1px solid var(--border); }
  .nav-cta { order: 2; }
  .page-hero { padding: 3rem 1.25rem 2.5rem; }
  .page-hero h1 { font-size: 2.4rem; }
  .btn, .btn-ghost { padding: 0.85rem 1.5rem; }
  .footer-inner { grid-template-columns: 1fr; gap: 2rem; padding: 2rem 1.25rem; }
  .footer-bar { padding: 1rem 1.25rem; flex-direction: column; gap: 0.5rem; align-items: flex-start; }
  #chat-window { width: calc(100vw - 2rem); right: 1rem; bottom: 5rem; height: 70vh; }
  #chat-bubble { position: fixed; bottom: 1.25rem; right: 1.25rem; }
  .hero { grid-template-columns: 1fr; min-height: auto; overflow: hidden; }
  .hero-text { padding: 2.5rem 1.25rem 2rem; }
  .hero-visual { min-height: 240px; border-left: none; border-top: 1px solid var(--border); width: 100%; }
  .hero-creds { gap: 1rem; flex-wrap: wrap; }
  .hero h1 { font-size: 2.6rem; }
  .hero-sub { max-width: 100%; }
  .big-stat { font-size: 3.5rem; }
  .divider { height: 30px; margin: 1rem auto; }
  .pillars { grid-template-columns: 1fr; }
  .pillar { border-right: none; border-bottom: 1px solid var(--border); padding: 2rem 1.25rem; }
  .pillar:last-child { border-bottom: none; }
  .audience { grid-template-columns: 1fr; margin: 1.5rem 1.25rem; }
  .quote-band { grid-template-columns: 1fr; gap: 1rem; padding: 2.5rem 1.25rem; }
  .cta-final { flex-direction: column; align-items: flex-start; gap: 1.5rem; padding: 2.5rem 1.25rem; }
  .classes-wrapper { padding: 1.25rem; }
  .class-block { grid-template-columns: 1fr; gap: 1.25rem; padding: 2.5rem 0; }
  .level-cards { grid-template-columns: 1fr; }
  .online-banner { grid-template-columns: 1fr; gap: 1.25rem; padding: 1.5rem; }
  .schedule-wrapper { padding: 1.25rem; }
  .class-row { grid-template-columns: 80px 1fr; gap: 0.5rem; }
  .class-instructor, .class-duration { display: none; }
  .class-row .badge { grid-column: 2; }
  .instructors-wrapper { padding: 1.25rem; }
  .instructor-block { grid-template-columns: 1fr; gap: 2rem; padding: 2.5rem 0; }
  .instructor-visual { max-width: 280px; }
  .faq-wrapper { padding: 1.25rem; }
  .faq-item { grid-template-columns: 30px 1fr; gap: 1rem; }
  .contact-grid { grid-template-columns: 1fr; }
  .contact-info { padding: 2.5rem 1.25rem; border-right: none; border-bottom: 1px solid var(--border); }
  .contact-form-area { padding: 2.5rem 1.25rem; }
  .form-row { grid-template-columns: 1fr; }
  .form-submit { flex-direction: column; align-items: flex-start; }
}