/* ==========================================================
   Úcademy · About us page
   Same theme tokens as the Services page
   ========================================================== */

:root {
  --primary: #3b52c4;
  --primary-dark: #2f42a8;
  --primary-soft: #eef0fd;
  --bg: #f6f7f9;
  --surface: #ffffff;
  --border: #e5e7eb;
  --text: #111827;
  --text-soft: #374151;
  --muted: #6b7280;
  --radius: 10px;
  --radius-sm: 6px;
  --container: 1200px;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.04);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
h1, h2, h3, p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }

.muted { color: var(--muted); }

/* ---------- Icons ---------- */
.icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  fill: none;
  stroke: var(--primary);
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 18px;
  font: inherit;
  font-weight: 500;
  font-size: 13px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.btn:hover { background: #f9fafb; border-color: #d1d5db; }
.btn--sm { padding: 7px 14px; font-size: 12.5px; }
.btn--primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
.btn--primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); }
.btn--outline { background: var(--surface); }

/* ---------- Badges ---------- */
.badge {
  display: inline-block;
  padding: 2px 9px;
  font-size: 11px;
  font-weight: 500;
  border-radius: 5px;
  background: #f3f4f6;
  color: var(--text-soft);
}
.badge--blue { background: var(--primary-soft); color: var(--primary); }

/* ==========================================================
   TOP BAR
   ========================================================== */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.topbar__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
  height: 58px;
  display: flex;
  align-items: center;
  gap: 28px;
}

.brand { display: flex; align-items: center; gap: 9px; }
.brand__logo {
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  font-size: 14px;
  border-radius: 6px;
}
.brand__name { font-weight: 600; font-size: 15px; }

.nav { display: flex; align-items: center; gap: 22px; }
.nav__link {
  position: relative;
  font-size: 13px;
  color: var(--muted);
  padding: 4px 0;
  transition: color 0.15s;
}
.nav__link:hover { color: var(--text); }
.nav__link.is-active { color: var(--primary); font-weight: 500; }

.topbar__actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 14px;
}
.account {
  font: inherit;
  font-size: 13px;
  color: var(--text-soft);
  background: none;
  border: 0;
  cursor: pointer;
}
.account__caret { font-size: 10px; }

.menu-toggle {
  display: none;
  width: 36px;
  height: 36px;
  margin-left: auto;
  padding: 8px;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  flex-direction: column;
  justify-content: space-between;
}
.menu-toggle span {
  display: block;
  height: 2px;
  background: var(--text-soft);
  border-radius: 2px;
}

/* ==========================================================
   PAGE LAYOUT
   ========================================================== */
.page {
  max-width: var(--container);
  margin: 0 auto;
  padding: 22px 28px 48px;
}

.crumbs {
  font-size: 11.5px;
  color: var(--muted);
  margin-bottom: 18px;
}
.crumbs a:hover { color: var(--primary); }

/* ---------- Hero / introduction ---------- */
.hero {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 28px;
  align-items: center;
  padding: 36px;
  margin-bottom: 40px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.hero h1 {
  margin: 14px 0 12px;
  font-size: 30px;
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.lead {
  font-size: 14.5px;
  color: var(--muted);
  max-width: 560px;
}
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.stats {
  display: grid;
  gap: 12px;
}
.stat {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 14px 18px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.stat strong {
  min-width: 34px;
  font-size: 26px;
  font-weight: 700;
  color: var(--primary);
}
.stat span { font-size: 13px; color: var(--text-soft); }

/* ---------- Blocks ---------- */
.block { margin-bottom: 36px; }

.block__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 14px;
}
.block__head h2 { font-size: 19px; font-weight: 600; }
.block__sub { font-size: 12.5px; color: var(--muted); }
.block__count {
  margin-left: auto;
  font-size: 11.5px;
  color: var(--muted);
}

.grid { display: grid; gap: 18px; }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

/* ---------- Cards ---------- */
.card {
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: border-color 0.15s, transform 0.15s;
}
.card:hover { border-color: #c7cdf0; transform: translateY(-1px); }

.card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}
.card h3 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.card p { font-size: 13px; }

.num {
  display: inline-block;
  margin-bottom: 14px;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-soft);
  padding: 2px 9px;
  border-radius: 5px;
}

/* Team */
.team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.member {
  display: grid;
  grid-template-columns: 120px 1fr;
  grid-template-areas:
    "photo name"
    "desc  desc";
  column-gap: 20px;
  row-gap: 16px;
  align-items: center;
  padding: 20px;
}

.member__photo {
  grid-area: photo;
  display: block;
  width: 120px;
  height: 80px;
  background: var(--surface);
  border: 1px solid #9ca3af;
  border-radius: 2px;
  object-fit: cover; /* dùng khi thay bằng thẻ <img> */
}

.member .member__name {
  grid-area: name;
  margin: 0;
  font-size: 15px;
  font-weight: 600;
}

.member .member__desc {
  grid-area: desc;
  margin: 0;
  font-size: 13px;
  color: var(--muted);
}

/* Tablet: 2 cột */
@media (min-width: 640px) {
  .team-grid { grid-template-columns: repeat(2, 1fr); }
}

/* Máy tính: hàng trên 3 thành viên, hàng dưới 2 thành viên nằm giữa */
@media (min-width: 981px) {
  .team-grid { grid-template-columns: repeat(6, 1fr); }
  .team-grid .member { grid-column: span 2; }
  .team-grid .member:nth-child(4) { grid-column: 2 / 4; }
  .team-grid .member:nth-child(5) { grid-column: 4 / 6; }
}

/* ==========================================================
   CONTACT SECTION
   ========================================================== */
.contact {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  padding: 32px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  scroll-margin-top: 80px;
}
.contact h2 { font-size: 21px; font-weight: 600; margin-bottom: 8px; }

.contact__list { margin-top: 22px; display: grid; gap: 16px; }
.contact__list li { display: flex; gap: 14px; align-items: flex-start; }
.contact__list .icon {
  width: 36px;
  height: 36px;
  padding: 8px;
  background: var(--primary-soft);
  border-radius: 8px;
}
.contact__list .label {
  display: block;
  font-size: 11.5px;
  color: var(--muted);
}
.contact__list a { color: var(--primary); }
.contact__list a:hover { text-decoration: underline; }
.copy-btn {
  margin-left: 8px;
  padding: 2px 8px;
  font: inherit;
  font-size: 11.5px;
  color: var(--primary);
  background: var(--primary-soft);
  border: 0;
  border-radius: 5px;
  cursor: pointer;
}
.copy-btn:hover { background: #e0e4fb; }
.contact__form { display: grid; gap: 14px; align-content: start; }
.field { display: grid; gap: 6px; }
.field__label { font-size: 12px; font-weight: 500; color: var(--text-soft); }
.field input,
.field textarea {
  width: 100%;
  padding: 10px 12px;
  font: inherit;
  font-size: 13px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  outline: none;
  resize: vertical;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.field input::placeholder,
.field textarea::placeholder { color: #9ca3af; }
.field input:focus,
.field textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59, 82, 196, 0.12);
}
.field.has-error input,
.field.has-error textarea { border-color: #dc2626; }

.contact__form .btn { justify-self: start; }
.form-status { font-size: 12.5px; min-height: 18px; }
.form-status.is-success { color: #15803d; }
.form-status.is-error { color: #dc2626; }

/* ==========================================================
   FOOTER
   ========================================================== */
.footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
}
.footer__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 16px 28px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 11.5px;
  color: var(--muted);
}

/* ==========================================================
   RESPONSIVE
   ========================================================== */
@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; padding: 28px; }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .contact { grid-template-columns: 1fr; gap: 28px; }
}

@media (max-width: 760px) {
  .topbar__inner { padding: 0 18px; gap: 12px; flex-wrap: wrap; height: auto; min-height: 58px; }
  .menu-toggle { display: flex; }
  .nav,
  .topbar__actions { display: none; width: 100%; }
  .nav { flex-direction: column; align-items: flex-start; gap: 4px; padding-bottom: 8px; }
  .nav__link { padding: 8px 0; width: 100%; }
  .topbar__actions { margin-left: 0; padding-bottom: 14px; justify-content: space-between; }
  .topbar.is-open .nav { display: flex; }
  .topbar.is-open .topbar__actions { display: flex; }

  .page { padding: 18px 18px 40px; }
  .hero h1 { font-size: 24px; }
  .grid--3,
  .grid--4 { grid-template-columns: 1fr; }
  .block__head { flex-wrap: wrap; }
  .block__sub { width: 100%; order: 3; }
  .contact { padding: 22px; }
}