@import url('https://fonts.googleapis.com/css2?family=Sora:wght@400;500;600;700&family=DM+Sans:opsz,wght@9..40,400;9..40,500;9..40,600&display=swap');

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

:root {
  --navy: #0C314B;
  --blue: #3B82F6;
  --blue-soft: #60a5fa;
  --blue-tint: #eef4ff;
  --surface: #f7f8fa;
  --text: #1e293b;
  --text-mid: #475569;
  --text-light: #64748b;
  --white: #ffffff;
  --border: #e2e8f0;
}

body {
  font-family: 'DM Sans', sans-serif;
  font-size: 16px;
  color: var(--text);
  background: var(--white);
  line-height: 1.65;
}

h1, h2, h3 { font-family: 'Sora', sans-serif; color: var(--navy); }
a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--navy); }
img { max-width: 100%; display: block; }

/* Wrapper */
.w { max-width: 880px; margin: 0 auto; padding: 0 24px; }

/* ===== NAV ===== */
nav {
  border-bottom: 1px solid var(--border);
  background: var(--white);
  position: sticky;
  top: 0;
  z-index: 50;
}

nav.dark { background: var(--navy); border-bottom: none; }

.nav-bar {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-bar img { height: 38px; width: auto; }

.nav-links { list-style: none; display: flex; gap: 22px; align-items: center; }

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-light);
}

.nav-links a:hover, .nav-links a.on { color: var(--navy); }

nav.dark .nav-links a { color: rgba(255,255,255,0.8); }
nav.dark .nav-links a:hover, nav.dark .nav-links a.on { color: #fff; }

.nav-btn {
  background: var(--blue);
  color: #fff !important;
  padding: 6px 16px;
  border-radius: 5px;
  font-size: 13px !important;
  font-weight: 500;
}

.nav-btn:hover { background: #2563eb; color: #fff !important; }

/* Mobile nav */
.menu-btn { display: none; background: none; border: none; cursor: pointer; }
.menu-btn span { display: block; width: 18px; height: 2px; background: var(--navy); margin: 4px 0; }
nav.dark .menu-btn span { background: #fff; }

/* ===== HERO ===== */
.hero {
  background: var(--navy);
  color: #fff;
  text-align: center;
  padding: 56px 24px 48px;
}

.hero h1 {
  color: #fff;
  font-size: 34px;
  font-weight: 700;
  margin-bottom: 14px;
  line-height: 1.2;
}

#rotate {
  color: var(--blue-soft);
  border-right: 2px solid var(--blue-soft);
  padding-right: 2px;
  animation: blink 0.7s step-end infinite;
}

@keyframes blink { 0%,100% { border-color: var(--blue-soft); } 50% { border-color: transparent; } }

.hero p {
  color: rgba(255,255,255,0.85);
  font-size: 16px;
  max-width: 500px;
  margin: 0 auto 24px;
  line-height: 1.7;
}

.hero-label {
  display: inline-block;
  background: rgba(59,130,246,0.15);
  color: #60a5fa;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  padding: 4px 14px;
  border-radius: 12px;
  margin-bottom: 16px;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-block;
  padding: 10px 24px;
  border-radius: 6px;
  font-family: 'DM Sans', sans-serif;
  font-size: 15px;
  font-weight: 500;
  border: none;
  cursor: pointer;
  text-align: center;
}

.btn-w { background: #fff; color: var(--navy); }
.btn-w:hover { background: #f0f0f0; color: var(--navy); }

.btn-b { background: var(--blue); color: #fff; }
.btn-b:hover { background: #2563eb; color: #fff; }

.btn-o { background: none; color: var(--navy); border: 1.5px solid var(--border); }
.btn-o:hover { border-color: var(--blue); color: var(--blue); }

.btn-ghost { background: none; color: rgba(255,255,255,0.85); border: 1.5px solid rgba(255,255,255,0.3); }
.btn-ghost:hover { color: #fff; background: rgba(255,255,255,0.06); }

.btn-row { display: flex; gap: 10px; justify-content: center; }

/* ===== SECTIONS ===== */
.sec { padding: 28px 0; }
.sec-alt { background: var(--surface); padding-top: 24px; padding-bottom: 36px; }

.sec-label {
  display: inline-block;
  background: rgba(59,130,246,0.08);
  color: var(--blue);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 10px;
  margin-bottom: 8px;
}

.sec h2 { font-size: 26px; font-weight: 700; margin-bottom: 6px; }
.sec .sub { font-size: 16px; color: var(--text-mid); max-width: 480px; }
.sec-head { margin-bottom: 20px; text-align: center; }
.sec-head .sub { margin: 0 auto; }

/* ===== 3-COLUMN GRID ===== */
.row3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.box {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  background: var(--white);
}

.box:hover { border-color: var(--blue); }

.box h3 { font-size: 16px; font-weight: 600; margin-bottom: 4px; }
.box p { font-size: 15px; color: var(--text-mid); line-height: 1.6; }

/* ===== CLASS TOPIC GROUPS ===== */
.topic-group { margin-bottom: 32px; padding-top: 28px; border-top: 1px solid var(--border); }
.topic-group:first-child { border-top: none; padding-top: 0; }
.topic-group:last-child { margin-bottom: 0; }

.topic-group h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}

.cls-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.cls {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px 18px;
  background: var(--white);
}

.cls:hover { border-color: var(--blue); }

.cls h3 { font-size: 15px; font-weight: 600; margin-bottom: 2px; }

.cls-dur {
  font-size: 12px;
  font-weight: 500;
  color: var(--blue);
  display: block;
  margin-bottom: 6px;
}

.cls p { font-size: 14px; color: var(--text-mid); line-height: 1.6; margin: 0; }

.cls-note {
  font-size: 12px;
  color: var(--text-light);
  font-style: italic;
  margin-top: 6px;
}

/* ===== CTA BAR ===== */
.cta {
  background: var(--navy);
  color: #fff;
  text-align: center;
  padding: 40px 24px;
}

.cta h2 { color: #fff; font-size: 24px; margin-bottom: 8px; }
.cta p { color: rgba(255,255,255,0.8); font-size: 16px; margin-bottom: 20px; }

/* ===== PAGE HEADER ===== */
.pg-head {
  text-align: center;
  padding: 40px 0 24px;
}

.pg-head h1 { font-size: 28px; margin-bottom: 8px; }
.pg-head p { font-size: 16px; color: var(--text-mid); max-width: 460px; margin: 0 auto; }

.pg-head.dark {
  background: var(--navy);
  padding: 40px 24px 36px;
  margin-bottom: 32px;
}

.pg-head.dark h1 { color: #fff; }
.pg-head.dark p { color: rgba(255,255,255,0.8); }
.pg-head.dark .sec-label {
  background: rgba(59,130,246,0.15);
  color: #60a5fa;
}

/* ===== ABOUT ===== */
.bio {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 32px;
  align-items: center;
}

.bio img {
  width: 260px;
  height: 260px;
  object-fit: cover;
  border-radius: 50%;
}

.bio p { font-size: 16px; color: var(--text-mid); line-height: 1.75; margin-bottom: 10px; }
.bio-btns { display: flex; gap: 8px; margin-top: 16px; }

/* ===== CONTACT ===== */
.contact-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.contact-row p { font-size: 16px; color: var(--text-mid); line-height: 1.7; margin-bottom: 12px; }

.links { display: flex; gap: 8px; margin-top: 16px; }

.links a {
  width: 34px;
  height: 34px;
  border: 1px solid var(--border);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
}

.links a:hover { border-color: var(--blue); color: var(--blue); }

.form-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 22px;
}

.f { margin-bottom: 14px; }
.f label { display: block; font-size: 14px; font-weight: 500; color: var(--navy); margin-bottom: 4px; }

.f input, .f select, .f textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1.5px solid var(--border);
  border-radius: 5px;
  font-family: 'DM Sans', sans-serif;
  font-size: 15px;
  color: var(--text);
  background: #fff;
}

.f input:focus, .f select:focus, .f textarea:focus { outline: none; border-color: var(--blue); }
.f textarea { resize: vertical; min-height: 90px; }

/* ===== FOOTER ===== */
footer {
  border-top: 1px solid var(--border);
  text-align: center;
  padding: 16px 0;
}

footer p { font-size: 13px; color: var(--text-light); }

/* ===== MOBILE ===== */
@media (max-width: 700px) {
  .nav-links { display: none; }
  .menu-btn { display: block; }
  .hero h1 { font-size: 26px; }
  .row3 { grid-template-columns: 1fr; }
  .cls-grid { grid-template-columns: 1fr; }
  .bio { grid-template-columns: 1fr; text-align: center; }
  .bio img { margin: 0 auto; width: 200px; height: 200px; }
  .bio-btns { justify-content: center; }
  .contact-row { grid-template-columns: 1fr; }
}