/* ================================================================
   BMI 계산기 웹 — Teal Theme (#0D9488)
   ================================================================ */

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

:root {
  --brand:       #0D9488;
  --brand-dark:  #0F766E;
  --brand-light: #CCFBF1;
  --bg:          #F0FDFA;
  --surface:     #FFFFFF;
  --surface2:    #F8F8F8;
  --border:      #E5E7EB;
  --text:        #1A1A1A;
  --text-muted:  #6B7280;
  --radius:      16px;
  --radius-sm:   10px;
  --shadow:      0 4px 20px rgba(0,0,0,.08);
  --shadow-sm:   0 2px 8px rgba(0,0,0,.06);
  font-family: "Noto Sans KR", -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", sans-serif;
  -webkit-font-smoothing: antialiased;
}

body { background: var(--bg); color: var(--text); min-height: 100dvh; overflow-x: hidden; font-size: 16px; line-height: 1.6; }
button { cursor: pointer; border: none; font-family: inherit; background: none; }
a { text-decoration: none; color: inherit; }
input, select, textarea { font-family: inherit; }

/* ── Layout ────────────────────────────────────────────── */
.layout-container {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 24px;
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 20px 48px;
}
@media (max-width: 800px) {
  .layout-container { grid-template-columns: 1fr; padding: 16px 12px 40px; }
  .app-sidebar { display: none; }
}
@media (max-width: 520px) {
  .hero-title { font-size: 20px; }
  .hero-desc { font-size: 13px; }
  .result-bmi { font-size: 48px; }
}

/* ── Ad ────────────────────────────────────────────────── */
.ad-container { display: block; width: 100%; text-align: center; }
.top-ad { background: #f9f9f9; padding: 8px 0; border-bottom: 1px solid var(--border); }
.middle-ad { margin: 16px 0; }
.bottom-ad { margin-top: 24px; padding: 16px 0; border-top: 1px solid var(--border); }

/* ── Header ────────────────────────────────────────────── */
.main-header {
  background: linear-gradient(135deg, #0F766E 0%, #0D9488 60%, #14B8A6 100%);
  padding: 16px 16px 28px;
  position: relative;
  overflow: hidden;
}
.main-header::before {
  content: ''; position: absolute; top: -40px; right: -40px;
  width: 160px; height: 160px; border-radius: 50%;
  background: rgba(255,255,255,.08);
}
.main-header::after {
  content: ''; position: absolute; bottom: -30px; left: 20px;
  width: 100px; height: 100px; border-radius: 50%;
  background: rgba(255,255,255,.06);
}
.header-inner {
  max-width: 1100px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  position: relative; z-index: 1;
}
.header-logo { display: flex; align-items: center; gap: 12px; }
.header-logo-icon {
  font-size: 28px; background: rgba(255,255,255,.2); border-radius: 12px;
  width: 48px; height: 48px; display: flex; align-items: center; justify-content: center;
}
.header-logo h1 { font-size: 22px; font-weight: 800; color: #fff; letter-spacing: -.5px; }
.header-logo h1 a { color: #fff; }
.header-logo p { font-size: 13px; color: rgba(255,255,255,.8); margin-top: 2px; }
.btn-share {
  font-size: 13px; color: rgba(255,255,255,.9);
  padding: 7px 14px; border-radius: 20px;
  background: rgba(255,255,255,.2); border: 1.5px solid rgba(255,255,255,.4);
  font-weight: 600; position: relative; z-index: 1; transition: background .15s;
}
.btn-share:hover { background: rgba(255,255,255,.3); }
.header-hero { max-width: 1100px; margin: 16px auto 0; position: relative; z-index: 1; }
.hero-title { font-size: 26px; font-weight: 900; color: #fff; letter-spacing: -.5px; }
.hero-desc { font-size: 15px; color: rgba(255,255,255,.85); margin-top: 4px; }

/* ── App Card ──────────────────────────────────────────── */
.app-card {
  background: var(--surface); border-radius: var(--radius);
  box-shadow: var(--shadow); overflow: hidden; margin-bottom: 16px;
}
.card-header {
  padding: 14px 20px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 8px;
}
.card-header-icon { font-size: 18px; }
.card-header-title { font-size: 15px; font-weight: 700; }
.card-body { padding: 20px; }

/* ── Screen ────────────────────────────────────────────── */
.screen { display: none; }
.screen.active { display: block; }

/* ── Input ─────────────────────────────────────────────── */
.input-row { display: flex; gap: 12px; margin-bottom: 16px; }
.input-group { flex: 1; display: flex; flex-direction: column; gap: 6px; }
.input-group label { font-size: 13px; font-weight: 700; color: #666; }
.input-group input {
  width: 100%; padding: 14px 12px;
  border: 2px solid var(--border); border-radius: 12px;
  font-size: 18px; font-weight: 700; text-align: center;
  outline: none; transition: border-color .2s; background: #fff;
}
.input-group input:focus { border-color: var(--brand); }
.input-group input::placeholder { color: #ccc; font-weight: 400; }

/* ── Buttons ───────────────────────────────────────────── */
.btn-primary {
  display: block; width: 100%; padding: 15px;
  background: var(--brand); color: #fff;
  border-radius: var(--radius-sm); font-size: 16px; font-weight: 800;
  box-shadow: 0 4px 16px rgba(13,148,136,.3); transition: opacity .15s, transform .1s;
}
.btn-primary:hover { opacity: .9; transform: translateY(-1px); }
.btn-primary:disabled { opacity: .4; cursor: not-allowed; transform: none; box-shadow: none; }
.btn-share-result {
  display: block; width: 100%; padding: 14px; margin-bottom: 8px;
  background: var(--brand); color: #fff;
  border-radius: var(--radius-sm); font-size: 15px; font-weight: 700;
  transition: background .15s;
}
.btn-share-result:hover { background: var(--brand-dark); }
.btn-restart {
  display: block; width: 100%; padding: 14px;
  border: 1.5px solid var(--brand); color: var(--brand);
  border-radius: var(--radius-sm); font-size: 15px; font-weight: 700;
  background: var(--surface); transition: background .15s;
}
.btn-restart:hover { background: var(--brand-light); }

/* ── Info Card ─────────────────────────────────────────── */
.info-card {
  background: var(--surface); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 18px 20px; margin-bottom: 16px;
}
.info-card h2 { font-size: 16px; font-weight: 800; margin-bottom: 12px; }
.info-card p { font-size: 14px; color: #374151; line-height: 1.75; margin-bottom: 8px; }

/* ── BMI Table ─────────────────────────────────────────── */
.bmi-table { display: flex; flex-direction: column; gap: 6px; margin-bottom: 12px; }
.bmi-table-row { display: flex; align-items: center; gap: 8px; font-size: 14px; color: #444; }
.bmi-dot { width: 12px; height: 12px; border-radius: 50%; flex-shrink: 0; }
.bmi-label { flex: 1; font-weight: 600; }
.bmi-range { font-weight: 600; color: #888; font-size: 13px; }
.bmi-note { font-size: 12px; color: #999; line-height: 1.5; }

/* ── Result Hero ───────────────────────────────────────── */
.result-hero {
  padding: 32px 20px; text-align: center; color: #fff;
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  border-radius: var(--radius); margin-bottom: 16px;
  box-shadow: var(--shadow);
}
.result-emoji { font-size: 48px; line-height: 1; }
.result-bmi { font-size: 56px; font-weight: 900; line-height: 1.1; }
.result-category { font-size: 18px; font-weight: 700; opacity: .9; }

/* ── Result Desc ───────────────────────────────────────── */
.result-desc {
  font-size: 15px; color: #444; line-height: 1.6;
  background: var(--bg); border-radius: 12px; padding: 16px;
  border-left: 4px solid var(--brand); margin-bottom: 16px;
}

/* ── Gauge ─────────────────────────────────────────────── */
.gauge-section { background: #fff; border: 1.5px solid var(--border); border-radius: var(--radius); padding: 16px; margin-bottom: 16px; }
.gauge-label { font-size: 13px; font-weight: 700; color: #666; margin-bottom: 10px; }
.gauge-bar { position: relative; height: 14px; border-radius: 99px; overflow: hidden; }
.gauge-zone { position: absolute; top: 0; height: 100%; }
.gauge-needle {
  position: absolute; top: -4px;
  width: 4px; height: 22px;
  background: #1a1a1a; border-radius: 2px;
  transform: translateX(-50%);
  box-shadow: 0 0 4px rgba(0,0,0,.3);
}
.gauge-labels {
  display: flex; justify-content: space-between;
  padding: 4px 10px 0; font-size: 10px; color: #999;
}

/* ── Detail Card ───────────────────────────────────────── */
.detail-card { background: #fff; border: 1.5px solid var(--border); border-radius: var(--radius); padding: 16px; margin-bottom: 16px; }
.detail-row { display: flex; justify-content: space-between; align-items: center; padding: 6px 0; }
.detail-row + .detail-row { border-top: 1px solid #f3f4f6; }
.detail-label { font-size: 13px; color: #888; }
.detail-value { font-size: 14px; font-weight: 600; color: #333; }

/* ── Risk Card ─────────────────────────────────────────── */
.risk-card { background: #FFF7ED; border: 1.5px solid #FED7AA; border-radius: var(--radius); padding: 16px; margin-bottom: 16px; }
.risk-title { font-size: 14px; font-weight: 700; color: #C2410C; margin-bottom: 10px; }
.risk-list { display: flex; flex-wrap: wrap; gap: 6px; }
.risk-tag {
  padding: 5px 12px; border-radius: 99px;
  background: #FFEDD5; color: #9A3412;
  font-size: 12px; font-weight: 600;
}

.source-note { font-size: 11px; color: #bbb; text-align: center; line-height: 1.4; margin-bottom: 16px; }

/* ── Sidebar ───────────────────────────────────────────── */
.app-sidebar {
  position: sticky; top: 24px;
  max-height: calc(100vh - 48px); overflow-y: auto;
  scrollbar-width: none; -ms-overflow-style: none;
}
.app-sidebar::-webkit-scrollbar { display: none; }
.sidebar-card { background: var(--surface); border-radius: var(--radius-sm); padding: 16px; margin-bottom: 16px; box-shadow: var(--shadow-sm); border: 1px solid var(--border); }
.sidebar-card h3 { font-size: 14px; font-weight: 700; margin-bottom: 12px; padding-left: 8px; border-left: 3px solid var(--brand); color: var(--text); }
.sidebar-list { list-style: none; padding: 0; margin: 0; }
.sidebar-list li { margin-bottom: 6px; }
.sidebar-list a { display: flex; align-items: flex-start; text-decoration: none; color: var(--text); padding: 7px 8px; border-radius: 8px; transition: background .15s; }
.sidebar-list a:hover { background: var(--brand-light); }
.link-icon { margin-right: 8px; font-size: 15px; flex-shrink: 0; margin-top: 1px; }
.link-content { flex: 1; min-width: 0; }
.link-title { display: block; font-size: 13px; font-weight: 600; color: var(--brand); margin-bottom: 1px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.link-desc { display: block; font-size: 11px; color: var(--text-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ── Footer ────────────────────────────────────────────── */
.main-footer {
  border-top: 1px solid var(--border); padding: 20px;
  text-align: center; font-size: 12px; color: var(--text-muted);
}

/* ── Share Toast ───────────────────────────────────────── */
.share-toast {
  position: fixed; bottom: 80px; left: 50%;
  transform: translateX(-50%) translateY(12px);
  background: #1A1F36; color: #fff;
  padding: 12px 22px; border-radius: 99px;
  font-size: 14px; font-weight: 600; white-space: nowrap;
  opacity: 0; transition: opacity .2s, transform .2s;
  z-index: 9999; box-shadow: 0 4px 20px rgba(0,0,0,.25); pointer-events: none;
}
.share-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }