/* ============================================================
   Body Fat Calculator — body-fat-calculator.css
   Load /css/style.css FIRST, then this file
   ============================================================ */

/* ── Method Tabs ─────────────────────────────────────────── */
.bf-tabs { display:flex; background:#f1f5f9; border-radius:12px; padding:4px; gap:3px; margin-bottom:18px; }
.bf-tab { flex:1; padding:8px 10px; border-radius:9px; border:none; font-family:'Lexend',sans-serif; font-size:11px; font-weight:600; cursor:pointer; transition:all 0.2s; color:#64748b; background:transparent; text-align:center; }
.bf-tab.active { background:#1D3557; color:#fff; box-shadow:0 2px 8px rgba(0,0,0,0.12); }
.bf-tab:hover:not(.active) { color:#1D3557; }

/* ── Unit Toggle ─────────────────────────────────────────── */
.bf-unit-bar { display:flex; background:#f1f5f9; border-radius:10px; padding:3px; gap:3px; margin-bottom:12px; }
.bf-unit-btn { flex:1; padding:7px; border-radius:8px; border:none; font-family:'Lexend',sans-serif; font-size:12px; font-weight:600; cursor:pointer; transition:all 0.2s; color:#64748b; background:transparent; }
.bf-unit-btn.active { background:#1D3557; color:#fff; }

/* ── Result Area ─────────────────────────────────────────── */
#bf-result-area { display:none; margin-top:20px; }
#bf-result-area.show { display:block; animation:fadeInUp 0.45s ease forwards; }

/* ── Primary BF% Display ─────────────────────────────────── */
.bf-primary { border-radius:16px; padding:20px; margin-bottom:14px; text-align:center; border:3px solid; transition:all 0.5s; }
.bf-pct-val { font-family:'Lexend',sans-serif; font-weight:900; font-size:56px; line-height:1; margin-bottom:4px; }
.bf-category-badge { display:inline-flex; align-items:center; gap:6px; padding:5px 16px; border-radius:999px; font-family:'Lexend',sans-serif; font-weight:700; font-size:13px; margin-bottom:8px; }
.bf-formula-note { font-family:'Courier New',monospace; font-size:11px; border-radius:8px; padding:6px 12px; display:inline-block; margin-top:6px; }

/* ACE Body Fat Category Colour Themes */
.cat-essential { background:#fdf4ff; border-color:#e879f9; }
.cat-essential .bf-pct-val { color:#86198f; }
.cat-essential .bf-category-badge { background:#fae8ff; color:#86198f; border:1.5px solid #e879f9; }

.cat-athlete { background:#f0fdf4; border-color:#86efac; }
.cat-athlete .bf-pct-val { color:#15803d; }
.cat-athlete .bf-category-badge { background:#dcfce7; color:#15803d; border:1.5px solid #86efac; }

.cat-fitness { background:#eff6ff; border-color:#93c5fd; }
.cat-fitness .bf-pct-val { color:#1e40af; }
.cat-fitness .bf-category-badge { background:#dbeafe; color:#1e40af; border:1.5px solid #93c5fd; }

.cat-average { background:#fefce8; border-color:#fde047; }
.cat-average .bf-pct-val { color:#854d0e; }
.cat-average .bf-category-badge { background:#fef9c3; color:#854d0e; border:1.5px solid #fde047; }

.cat-obese { background:#fff1f2; border-color:#fca5a5; }
.cat-obese .bf-pct-val { color:#be123c; }
.cat-obese .bf-category-badge { background:#fee2e2; color:#be123c; border:1.5px solid #fca5a5; }

/* ── Body Composition Panels ─────────────────────────────── */
.bf-comp-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:10px; margin-bottom:14px; }
.bf-comp-card { background:#f8fafc; border:1px solid #e2e8f0; border-radius:12px; padding:12px; text-align:center; }
.bf-comp-label { font-family:'Inter',sans-serif; font-size:10px; color:#94a3b8; text-transform:uppercase; letter-spacing:0.04em; margin-bottom:4px; }
.bf-comp-val { font-family:'Lexend',sans-serif; font-weight:800; font-size:20px; color:#1D3557; line-height:1; margin-bottom:2px; }
.bf-comp-unit { font-family:'Inter',sans-serif; font-size:10px; color:#94a3b8; }

/* ── ACE Category Bar ────────────────────────────────────── */
.ace-bar-wrap { margin-bottom:14px; }
.ace-bar-title { font-family:'Lexend',sans-serif; font-weight:700; color:#1D3557; font-size:12px; margin-bottom:8px; }
.ace-bar { display:flex; height:14px; border-radius:8px; overflow:visible; gap:2px; margin-bottom:4px; position:relative; }
.ace-seg { height:100%; border-radius:4px; position:relative; }
.ace-essential { background:#e879f9; flex:1; }
.ace-athlete   { background:#4ade80; flex:2; }
.ace-fitness   { background:#60a5fa; flex:2; }
.ace-average   { background:#fbbf24; flex:2; }
.ace-obese     { background:#f87171; flex:3; }
.ace-pointer { position:absolute; bottom:-18px; transform:translateX(-50%); font-family:'Lexend',sans-serif; font-size:10px; font-weight:700; color:#1D3557; white-space:nowrap; }
.ace-pointer::before { content:'▲'; display:block; text-align:center; color:#1D3557; font-size:12px; margin-bottom:0; line-height:1; }
.ace-bar-labels { display:flex; justify-content:space-between; font-family:'Inter',sans-serif; font-size:9px; color:#94a3b8; margin-top:22px; }

/* ── Health Risk Panel ───────────────────────────────────── */
.bf-risk-panel { background:#fff7ed; border:1px solid #fed7aa; border-radius:12px; padding:14px 16px; margin-bottom:12px; display:none; }
.bf-risk-panel.show { display:block; }
.bf-risk-title { font-family:'Lexend',sans-serif; font-weight:700; color:#9a3412; font-size:13px; margin-bottom:8px; }
.bf-risk-item { font-family:'Inter',sans-serif; font-size:12px; color:#7c2d12; margin-bottom:5px; display:flex; gap:6px; line-height:1.6; }
.bf-risk-item::before { content:'▸'; color:#fb923c; flex-shrink:0; }

/* ── Goal Calculator Panel ───────────────────────────────── */
.bf-goal-panel { background:#f0fdf4; border:1px solid #86efac; border-radius:12px; padding:14px 16px; margin-bottom:12px; display:none; }
.bf-goal-panel.show { display:block; }
.bf-goal-title { font-family:'Lexend',sans-serif; font-weight:700; color:#15803d; font-size:13px; margin-bottom:8px; }
.bf-goal-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:8px; }
.bf-goal-card { background:rgba(255,255,255,0.7); border-radius:10px; padding:10px; text-align:center; }
.bf-goal-val { font-family:'Lexend',sans-serif; font-weight:800; font-size:18px; color:#15803d; }
.bf-goal-label { font-family:'Inter',sans-serif; font-size:10px; color:#166534; text-transform:uppercase; }

/* ── Mode Panel ──────────────────────────────────────────── */
.bf-panel { display:none; }
.bf-panel.active { display:block; animation:fadeInUp 0.3s ease; }

/* ── Formula Box ─────────────────────────────────────────── */
.bf-formula-box { background:#1e293b; border-radius:12px; padding:16px 18px; margin-bottom:20px; }
.bf-formula-label { color:#94a3b8; font-size:11px; font-family:'Inter',sans-serif; font-weight:600; text-transform:uppercase; letter-spacing:0.06em; margin-bottom:6px; }
.bf-formula-eq { font-family:'Courier New',monospace; font-size:12px; line-height:2; }
.bff-green  { color:#4ade80; }
.bff-white  { color:#e2e8f0; }
.bff-yellow { color:#facc15; }
.bff-blue   { color:#93c5fd; }
.bff-gray   { color:#64748b; }

/* ── ACE Reference Table ─────────────────────────────────── */
.ace-table { width:100%; border-collapse:collapse; border-radius:12px; overflow:hidden; border:1px solid #e2e8f0; margin-bottom:24px; }
.ace-table thead tr { background:#1D3557; }
.ace-table th { text-align:center; padding:10px 8px; font-family:'Lexend',sans-serif; font-weight:600; font-size:11px; color:#fff; }
.ace-table td { padding:9px 8px; font-family:'Inter',sans-serif; font-size:12px; color:#475569; border-bottom:1px solid #f1f5f9; text-align:center; }
.ace-table tbody tr:last-child td { border-bottom:none; }
.td-essential { background:#fdf4ff; color:#86198f; font-weight:700; }
.td-athlete   { background:#f0fdf4; color:#15803d; font-weight:700; }
.td-fitness   { background:#eff6ff; color:#1e40af; font-weight:700; }
.td-average   { background:#fefce8; color:#854d0e; font-weight:700; }
.td-obese     { background:#fff1f2; color:#be123c; font-weight:700; }

/* ── Tips Grid ───────────────────────────────────────────── */
.tips-grid-bf { display:grid; grid-template-columns:1fr 1fr; gap:14px; margin-bottom:24px; }
.tip-bf { background:#fff; border:1px solid #e2e8f0; border-radius:12px; padding:16px; }
.tip-icon-bf { font-size:22px; margin-bottom:8px; }
.tip-title-bf { font-family:'Lexend',sans-serif; font-weight:600; color:#1D3557; font-size:14px; margin-bottom:6px; }
.tip-body-bf { font-family:'Inter',sans-serif; font-size:12px; color:#64748b; line-height:1.6; }

/* ── Highlight Box ───────────────────────────────────────── */
.hl-box-bf { background:linear-gradient(135deg,#fff5f5,#fef2f2); border-left:4px solid #E63946; border-radius:0 12px 12px 0; padding:16px 18px; margin-bottom:24px; }
.hl-box-bf p { font-size:13px; margin:0; }

/* ── Hero Badge ──────────────────────────────────────────── */
.bf-hero-badge { display:inline-flex; align-items:center; gap:6px; background:linear-gradient(135deg,#1D3557,#2d4f7f); color:#fff; border-radius:20px; padding:5px 14px; font-size:12px; font-weight:600; font-family:'Lexend',sans-serif; letter-spacing:0.3px; margin-bottom:16px; }

/* ── Stat Strip ──────────────────────────────────────────── */
.stat-strip-bf { display:grid; grid-template-columns:repeat(4,1fr); gap:10px; margin-bottom:24px; }
.stat-box-bf { background:#fff; border:1px solid #e2e8f0; border-radius:10px; padding:12px; text-align:center; }
.stat-num-bf { font-family:'Lexend',sans-serif; font-weight:800; font-size:18px; color:#1D3557; }
.stat-num-bf.red { color:#E63946; }
.stat-lbl-bf { font-family:'Inter',sans-serif; font-size:10px; color:#94a3b8; text-transform:uppercase; letter-spacing:0.04em; margin-top:2px; }

/* ── Measurement Guide ───────────────────────────────────── */
.measure-steps { display:flex; flex-direction:column; gap:10px; margin-bottom:20px; }
.measure-step { display:flex; gap:10px; align-items:flex-start; }
.ms-num { width:26px; height:26px; border-radius:50%; background:#1D3557; color:#fff; font-family:'Lexend',sans-serif; font-weight:700; font-size:12px; display:flex; align-items:center; justify-content:center; flex-shrink:0; margin-top:1px; }
.ms-title { font-family:'Lexend',sans-serif; font-weight:700; color:#1D3557; font-size:13px; margin-bottom:2px; }
.ms-body { font-family:'Inter',sans-serif; font-size:12px; color:#64748b; line-height:1.6; }

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width:768px) {
  .bf-comp-grid { grid-template-columns:repeat(2,1fr); }
  .bf-goal-grid { grid-template-columns:1fr 1fr; }
  .tips-grid-bf { grid-template-columns:1fr; }
  .stat-strip-bf { grid-template-columns:repeat(2,1fr); }
  .bf-pct-val { font-size:44px; }
}
@media (max-width:480px) {
  .bf-comp-grid { grid-template-columns:1fr 1fr; }
}
@media print {
  .bf-tabs,.bf-unit-bar,.share-row,.sidebar-card,.calc-btn { display:none !important; }
}