/* Giao diện dịu mắt, chữ to, không hiệu ứng chuyển động — thân thiện với người tự kỷ */
:root {
  --bg: #f7f5f0;
  --card: #ffffff;
  --text: #22313f;
  --muted: #5b6b78;
  --primary: #2f6f73;
  --primary-soft: #e3efee;
  --border: #d9dde0;
  --radius: 12px;
}

* { box-sizing: border-box; }

html { font-size: 18px; }

body {
  margin: 0;
  font-family: "Segoe UI", Roboto, Arial, sans-serif;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

a { color: var(--primary); }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 3px solid #f0b429;
  outline-offset: 2px;
}

.container { max-width: 1040px; margin: 0 auto; padding: 0 20px; }

.skip-link { position: absolute; left: -999px; }
.skip-link:focus { left: 16px; top: 16px; background: #fff; padding: 8px 12px; z-index: 10; }

/* Header */
.site-header { background: var(--card); border-bottom: 1px solid var(--border); }
.site-header .container { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 14px; padding-bottom: 14px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); font-weight: 700; font-size: 1.15rem; }
.brand img { width: 40px; height: 40px; }
.nav { display: flex; gap: 6px; flex-wrap: wrap; }
.nav a { text-decoration: none; padding: 8px 14px; border-radius: 8px; color: var(--text); }
.nav a:hover, .nav a[aria-current="page"] { background: var(--primary-soft); color: var(--primary); }

/* Hero */
.hero { padding: 56px 0 40px; }
.hero h1 { font-size: 2.1rem; line-height: 1.3; margin: 0 0 16px; }
.hero p { font-size: 1.1rem; color: var(--muted); max-width: 640px; margin: 0 0 24px; }

.btn { display: inline-block; padding: 12px 22px; border-radius: 10px; text-decoration: none; font-weight: 600; border: 2px solid var(--primary); cursor: pointer; font-size: 1rem; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-outline { background: transparent; color: var(--primary); margin-left: 8px; }

/* Sections */
section { padding: 32px 0; }
h2 { font-size: 1.5rem; margin: 0 0 20px; }

.grid { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; }
.card h3 { margin: 0 0 8px; font-size: 1.15rem; }
.card p { margin: 0; color: var(--muted); }

.steps { counter-reset: step; list-style: none; padding: 0; margin: 0; }
.steps li { counter-increment: step; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 18px 18px 64px; margin-bottom: 12px; position: relative; }
.steps li::before { content: counter(step); position: absolute; left: 18px; top: 18px; width: 32px; height: 32px; border-radius: 50%; background: var(--primary); color: #fff; font-weight: 700; display: flex; align-items: center; justify-content: center; }

/* Jobs */
.job { display: flex; flex-direction: column; gap: 10px; }
.tags { display: flex; gap: 6px; flex-wrap: wrap; }
.tag { background: var(--primary-soft); color: var(--primary); font-size: 0.8rem; padding: 2px 10px; border-radius: 999px; }
.job .meta { font-size: 0.9rem; color: var(--muted); }
.sample-note { background: #fff8e1; border: 1px solid #f0d58a; border-radius: var(--radius); padding: 12px 16px; margin-bottom: 20px; font-size: 0.95rem; }

.filter { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 20px; }
.filter input, .filter select { padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 1rem; background: #fff; }
.filter input { flex: 1 1 240px; }

/* Form */
form.card { max-width: 640px; }
label { display: block; font-weight: 600; margin: 14px 0 6px; }
input, textarea, select { width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; font: inherit; }
.filter input, .filter select { width: auto; }
textarea { min-height: 120px; }
.form-msg { margin-top: 14px; color: var(--primary); font-weight: 600; }

/* Footer */
.site-footer { margin-top: 48px; background: var(--card); border-top: 1px solid var(--border); padding: 24px 0; color: var(--muted); font-size: 0.9rem; }

@media (max-width: 600px) {
  html { font-size: 17px; }
  .hero h1 { font-size: 1.7rem; }
  .btn-outline { margin: 10px 0 0; }
  .nav { gap: 2px; }
  .nav a { padding: 6px 9px; font-size: 0.9rem; }
}