/* ==========================================================================
   Office Syndrome Care — Stylesheet
   ธีมสีฟ้า-ขาว แนวทางการแพทย์/สถานพยาบาล ใช้งานได้ทั้งคอมพิวเตอร์และมือถือ
   ========================================================================== */

:root {
  /* โทนสีหลัก: ฟ้า-ขาว แนวโรงพยาบาล/คลินิก */
  --color-primary: #1971c2;
  --color-primary-dark: #0f4f8f;
  --color-primary-darker: #0a3a6b;
  --color-primary-light: #e9f3fc;
  --color-primary-light-2: #d3e8fb;
  --color-accent: #f2994a;
  --color-accent-dark: #e07f2b;

  --color-bg: #f4f9fd;
  --color-card: #ffffff;
  --color-text: #1c2b3a;
  --color-text-muted: #5c7488;
  --color-border: #dce9f4;

  --risk-high: #e2483f;
  --risk-high-bg: #fdeceb;
  --risk-medium: #e0972a;
  --risk-medium-bg: #fdf3e3;
  --risk-low: #1fa15c;
  --risk-low-bg: #e7f7ee;

  --star-color: #f5b301;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 2px 10px rgba(15, 60, 110, 0.07);
  --shadow-md: 0 8px 28px rgba(15, 60, 110, 0.12);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: "Sarabun", "Noto Sans Thai", "Segoe UI", system-ui, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

a { color: var(--color-primary-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 { line-height: 1.3; margin: 0 0 .5em; }

img { max-width: 100%; }

/* ---------------- Header / Nav ---------------- */
.site-header {
  background: var(--color-card);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 1px 0 rgba(15, 60, 110, 0.03);
  position: sticky;
  top: 0;
  z-index: 50;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
}
.brand {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-primary-dark);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}
.brand-mark {
  font-size: 1.3rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--color-primary-light);
  border-radius: 10px;
}
.main-nav { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.main-nav a { color: var(--color-text); font-weight: 500; padding: 6px 4px; border-bottom: 2px solid transparent; }
.main-nav a.active, .main-nav a:hover { color: var(--color-primary-dark); border-color: var(--color-primary); text-decoration: none; }
.nav-cta {
  background: var(--color-primary);
  color: #fff !important;
  padding: 8px 16px !important;
  border-radius: 999px;
  border: none !important;
}
.nav-cta:hover { background: var(--color-primary-dark); }
.nav-cta-outline {
  border: 1px solid var(--color-border) !important;
  padding: 6px 14px !important;
  border-radius: 999px;
}
.nav-toggle {
  display: none;
  background: var(--color-primary-light);
  border: none;
  font-size: 1.3rem;
  line-height: 1;
  cursor: pointer;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  color: var(--color-primary-dark);
}

@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .main-nav {
    display: none;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 2px;
    padding: 10px;
    margin-top: 10px;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 10px 12px; border-bottom: none; border-radius: 8px; }
  .main-nav a.active, .main-nav a:hover { background: var(--color-primary-light); }
  .main-nav .nav-cta, .main-nav .nav-cta-outline { text-align: center; margin-top: 6px; }
  .header-inner { flex-wrap: wrap; }
}

/* ---------------- Layout ---------------- */
.page-content { padding: 32px 20px 60px; min-height: 60vh; }

@media (max-width: 600px) {
  .page-content { padding: 22px 16px 44px; }
  .container { padding: 0 16px; }
}

/* ---------------- Alerts / Flash ---------------- */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius);
  margin-bottom: 16px;
  font-weight: 500;
}
.alert-error { background: var(--risk-high-bg); color: var(--risk-high); }
.alert-success { background: var(--risk-low-bg); color: var(--risk-low); }
.alert-warning { background: var(--risk-medium-bg); color: var(--risk-medium); }
.alert-info { background: var(--color-primary-light); color: var(--color-primary-dark); }

/* ---------------- Hero ---------------- */
.hero {
  background: linear-gradient(135deg, var(--color-primary-light), #ffffff 65%);
  border: 1px solid var(--color-primary-light-2);
  border-radius: 20px;
  padding: 48px 40px;
  margin-bottom: 40px;
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  align-items: center;
  justify-content: space-between;
}
.hero-text { flex: 1 1 420px; }
.hero-text h1 { font-size: 2rem; color: var(--color-primary-darker); }
.hero-text p { color: var(--color-text-muted); font-size: 1.05rem; }
.hero-actions { display: flex; gap: 12px; margin-top: 18px; flex-wrap: wrap; }
.hero-visual {
  flex: 0 0 220px;
  font-size: 6rem;
  text-align: center;
}

@media (max-width: 700px) {
  .hero { padding: 32px 24px; border-radius: 16px; }
  .hero-text h1 { font-size: 1.5rem; }
  .hero-text p { font-size: 0.98rem; }
  .hero-visual { flex-basis: 100%; font-size: 3.5rem; order: -1; }
}

@media (max-width: 420px) {
  .hero-actions .btn { flex: 1 1 100%; }
}

/* ---------------- Buttons ---------------- */
.btn {
  display: inline-block;
  padding: 10px 22px;
  border-radius: 999px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  font-size: 0.95rem;
  text-align: center;
  min-height: 40px;
}
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); color: #fff; text-decoration: none; }
.btn-outline { background: transparent; border: 1px solid var(--color-primary); color: var(--color-primary-dark); }
.btn-outline:hover { background: var(--color-primary-light); text-decoration: none; }
.btn-accent { background: var(--color-accent); color: #fff; }
.btn-accent:hover { background: var(--color-accent-dark); color: #fff; text-decoration: none; }
.btn-danger { background: var(--risk-high); color: #fff; }
.btn-sm { padding: 6px 14px; font-size: 0.85rem; min-height: 34px; }
.btn-block { display: block; width: 100%; }
.btn[disabled] { opacity: .5; cursor: not-allowed; }

/* ---------------- Cards / Grid ---------------- */
.card {
  background: var(--color-card);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
}
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }

@media (max-width: 600px) {
  .card { padding: 18px; }
  .grid { gap: 14px; }
}

.symptom-card { border-left: 4px solid var(--color-primary); }
.symptom-card h3 { color: var(--color-primary-dark); font-size: 1.05rem; }
.symptom-card p { color: var(--color-text-muted); margin: 0; font-size: 0.92rem; }

.section { margin-bottom: 48px; }
.section-title { font-size: 1.4rem; color: var(--color-primary-dark); margin-bottom: 6px; }
.section-sub { color: var(--color-text-muted); margin-bottom: 20px; }

@media (max-width: 600px) {
  .section { margin-bottom: 34px; }
  .section-title { font-size: 1.2rem; }
}

/* ---------------- Forms ---------------- */
.form-narrow { max-width: 440px; margin: 0 auto; }
.form-group { margin-bottom: 16px; }
label { display: block; font-weight: 600; margin-bottom: 6px; font-size: 0.92rem; }
input[type=text], input[type=email], input[type=password], input[type=number],
input[type=date], input[type=url], select, textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: inherit;
  background: #fff;
  color: var(--color-text);
}
textarea { resize: vertical; min-height: 90px; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--color-primary); outline-offset: 1px; }
.form-hint { color: var(--color-text-muted); font-size: 0.82rem; margin-top: 4px; }
.form-actions { margin-top: 22px; display: flex; gap: 10px; flex-wrap: wrap; }
.checkbox-row { display: flex; align-items: center; gap: 8px; }
.checkbox-row input { width: auto; }

@media (max-width: 480px) {
  .form-actions .btn { flex: 1 1 100%; }
}

table.data-table { width: 100%; border-collapse: collapse; background: #fff; border-radius: var(--radius); overflow: hidden; }
table.data-table th, table.data-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  font-size: 0.92rem;
  white-space: nowrap;
}
table.data-table th { background: var(--color-primary-light); color: var(--color-primary-dark); }
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; border-radius: var(--radius); }

/* ---------------- Badges ---------------- */
.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
}
.badge-risk-high { background: var(--risk-high-bg); color: var(--risk-high); }
.badge-risk-medium { background: var(--risk-medium-bg); color: var(--risk-medium); }
.badge-risk-low { background: var(--risk-low-bg); color: var(--risk-low); }
.badge-muted { background: var(--color-primary-light); color: var(--color-primary-dark); }
.badge-role-admin { background: #eaf0fd; color: #3452c4; }

/* ---------------- Stars ---------------- */
.stars { color: var(--star-color); font-size: 1.1rem; letter-spacing: 2px; }
.star-empty { color: #dfe7ee; }

/* ---------------- Progress bar ---------------- */
.progress-bar { background: var(--color-border); border-radius: 999px; height: 10px; overflow: hidden; }
.progress-bar-fill { background: var(--color-primary); height: 100%; border-radius: 999px; transition: width .3s ease; }

/* ---------------- Pose check UI ---------------- */
.pose-check-box {
  border: 1px dashed var(--color-primary-light-2);
  border-radius: var(--radius);
  padding: 18px;
  text-align: center;
  background: var(--color-primary-light);
}
.pose-preview { max-width: 100%; border-radius: 10px; margin: 10px auto; display: block; max-height: 320px; }
#poseVideo, #poseCanvas { max-width: 100%; border-radius: 10px; background: #000; }
.pose-result-pass { color: var(--risk-low); font-weight: 700; }
.pose-result-fail { color: var(--risk-high); font-weight: 700; }
.confidence-bar { height: 8px; border-radius: 999px; background: var(--color-border); overflow: hidden; margin-top: 6px; }
.confidence-fill { height: 100%; background: var(--color-primary); }

/* ---------------- Leaderboard ---------------- */
.leaderboard-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
  flex-wrap: wrap;
}
.leaderboard-rank { font-weight: 700; width: 32px; text-align: center; color: var(--color-primary-dark); flex-shrink: 0; }
.leaderboard-rank.top1 { color: #d4a300; font-size: 1.3rem; }
.leaderboard-rank.top2 { color: #9aa0a6; font-size: 1.15rem; }
.leaderboard-rank.top3 { color: #b5651d; font-size: 1.05rem; }
.leaderboard-name { flex: 1 1 140px; font-weight: 600; min-width: 0; }

/* ---------------- Camera modal ---------------- */
#cameraModal .card { max-width: 480px; width: 92%; }

/* ---------------- Footer ---------------- */
.site-footer {
  background: var(--color-primary-darker);
  color: #cfe1f2;
  padding: 28px 20px;
  margin-top: 40px;
  font-size: 0.85rem;
}
.site-footer .container { text-align: center; }
.footer-disclaimer { color: #93b6d6; margin-top: 6px; }

/* ---------------- Misc ---------------- */
.muted { color: var(--color-text-muted); }
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.flex-between { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.tag-list { display: flex; gap: 8px; flex-wrap: wrap; }
.empty-state { text-align: center; padding: 40px 20px; color: var(--color-text-muted); }

/* ---------------- Small-screen helpers ---------------- */
@media (max-width: 600px) {
  h1 { font-size: 1.5rem; }
  h2 { font-size: 1.25rem; }
  .flex-between { align-items: flex-start; }
}