/* Calipath Converter — Cinematic Glass Dark (Standalone) */
@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/variable/pretendardvariable-dynamic-subset.min.css');

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
button,input,select,textarea{font-family:inherit}

:root{
  --bg:#0a0a0f;
  --bg-card:rgba(255,255,255,0.04);
  --bg-subtle:rgba(255,255,255,0.03);
  --bg-faint:rgba(255,255,255,0.02);
  --surface-1:rgba(255,255,255,0.04);
  --surface-2:rgba(255,255,255,0.07);
  --border:rgba(255,255,255,0.08);
  --border-accent:rgba(124,106,255,0.3);
  --text:#e8e8ef;
  --text-dim:#8888a0;
  --text-muted:#555570;
  --accent:#7c6aff;
  --accent-glow:rgba(124,106,255,0.25);
  --accent-subtle:rgba(124,106,255,0.04);
  --accent-bg:rgba(124,106,255,0.06);
  --accent-dim:rgba(124,106,255,0.15);
  --accent-border:rgba(124,106,255,0.2);
  --green:#00E676;
  --green-glow:rgba(0,230,118,0.2);
  --green-dim:rgba(0,230,118,0.12);
  --green-bg:rgba(74,222,128,0.06);
  --green-border:rgba(74,222,128,0.15);
  --amber:#fbbf24;
  --amber-dim:rgba(251,191,36,0.08);
  --amber-border:rgba(251,191,36,0.2);
  --red:#f87171;
  --radius:2rem;
  --radius-sm:1rem;
  --radius-pill:20px;
  --transition:0.2s cubic-bezier(0.4,0,0.2,1);
  --font:'Pretendard Variable',Pretendard,-apple-system,'Noto Sans KR',sans-serif;
}

html{font-size:16px}
body{font-family:var(--font);background:var(--bg);color:var(--text);min-height:100dvh;line-height:1.6;-webkit-font-smoothing:antialiased;position:relative}

/* Ambient atmospheric background */
body::before{content:'';position:fixed;inset:0;z-index:0;pointer-events:none;
  background:radial-gradient(ellipse 80% 60% at 70% 15%,rgba(124,106,255,0.10) 0%,transparent 65%),
             radial-gradient(ellipse 60% 50% at 25% 85%,rgba(0,230,118,0.06) 0%,transparent 55%),
             radial-gradient(ellipse 40% 40% at 50% 50%,rgba(124,106,255,0.03) 0%,transparent 70%)}
/* Noise texture overlay */
body::after{content:'';position:fixed;inset:0;z-index:0;pointer-events:none;opacity:0.025;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size:128px 128px}

/* Layout */
.converter-root{max-width:480px;margin:0 auto;padding:24px 20px 60px;position:relative;z-index:1}

/* Header */
.converter-header{text-align:center;margin-bottom:28px}
.converter-title{font-size:1.6rem;font-weight:800;letter-spacing:-0.02em;line-height:1.2;background:linear-gradient(135deg,var(--text) 40%,var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.converter-subtitle{color:var(--text-dim);font-size:0.85rem;margin-top:6px}

/* Card */
.conv-card{background:var(--surface-1);backdrop-filter:blur(24px) saturate(150%);-webkit-backdrop-filter:blur(24px) saturate(150%);border:1px solid rgba(255,255,255,0.06);border-radius:var(--radius);padding:24px;margin-bottom:16px;box-shadow:inset 0 0.5px 0 rgba(255,255,255,0.06),0 4px 30px rgba(0,0,0,0.3)}

/* Section label */
.conv-label{font-size:0.8rem;font-weight:600;color:var(--text-dim);letter-spacing:0.05em;margin-bottom:8px;display:block}

/* Weight input group */
.weight-input-group{display:flex;gap:8px;align-items:center}
.weight-input{flex:1;padding:14px 16px;border:2px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-card);color:var(--text);font-size:1.3rem;font-weight:700;text-align:center;outline:none;transition:border-color var(--transition);font-variant-numeric:tabular-nums;-moz-appearance:textfield;appearance:textfield}
.weight-input:focus{border-color:var(--accent)}
.weight-input::placeholder{color:var(--text-muted);font-weight:400;font-size:1rem}
/* Remove number input spinners */
.weight-input::-webkit-outer-spin-button,
.weight-input::-webkit-inner-spin-button{-webkit-appearance:none;appearance:none;margin:0}

.unit-toggle{display:flex;border-radius:var(--radius-sm);overflow:hidden;border:2px solid var(--border);flex-shrink:0}
.unit-btn{padding:14px 16px;background:var(--bg-card);color:var(--text-dim);font-size:0.85rem;font-weight:600;cursor:pointer;border:none;transition:all var(--transition)}
.unit-btn.active{background:var(--accent-dim);color:var(--accent)}
.unit-btn:hover:not(.active){background:var(--surface-2)}

/* Exercise grid */
.exercise-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.exercise-btn{padding:14px 12px;border:2px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-card);color:var(--text);cursor:pointer;transition:all var(--transition);text-align:center;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.exercise-btn:hover{border-color:rgba(255,255,255,0.15);background:var(--surface-2)}
.exercise-btn.active{border-color:var(--accent);background:var(--accent-bg);box-shadow:0 0 12px var(--accent-glow)}
.exercise-btn:active{transform:scale(0.96)}
.exercise-name{font-weight:700;font-size:0.9rem;margin-bottom:2px}
.exercise-muscle{font-size:0.7rem;color:var(--text-muted)}

/* Variation pills */
.variation-pills{display:flex;gap:6px;flex-wrap:wrap}
.variation-pill{padding:8px 16px;border-radius:var(--radius-pill);background:var(--bg-card);border:1px solid var(--border);color:var(--text-dim);font-size:0.8rem;font-weight:500;cursor:pointer;transition:all var(--transition)}
.variation-pill.active{background:var(--accent-dim);border-color:var(--accent);color:var(--accent)}
.variation-pill:hover:not(.active){background:var(--surface-2)}

/* Rep input */
.rep-input-row{display:flex;gap:8px;align-items:center}
.rep-input{flex:1;padding:14px 16px;border:2px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-card);color:var(--text);font-size:1.3rem;font-weight:700;text-align:center;outline:none;transition:border-color var(--transition);font-variant-numeric:tabular-nums;-moz-appearance:textfield;appearance:textfield}
.rep-input:focus{border-color:var(--accent)}
.rep-input::-webkit-outer-spin-button,
.rep-input::-webkit-inner-spin-button{-webkit-appearance:none;appearance:none;margin:0}
.rep-unit{font-size:0.85rem;color:var(--text-muted);font-weight:600;flex-shrink:0}

/* Quick rep buttons */
.quick-reps{display:flex;gap:6px;margin-top:8px;flex-wrap:wrap}
.quick-rep-btn{padding:8px 14px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-card);color:var(--text-dim);font-size:0.85rem;font-weight:600;cursor:pointer;transition:all var(--transition)}
.quick-rep-btn:hover{border-color:var(--accent);color:var(--accent)}
.quick-rep-btn:active{transform:scale(0.95)}

/* Results */
.results-card{border-color:var(--accent-border);background:var(--accent-subtle);position:relative;overflow:hidden}
.results-card::before{content:'';position:absolute;top:-40%;right:-20%;width:200px;height:200px;background:radial-gradient(circle,rgba(124,106,255,0.06) 0%,transparent 70%);pointer-events:none;border-radius:50%}
.results-title{font-size:0.85rem;font-weight:700;color:var(--accent);margin-bottom:16px;display:flex;align-items:center;gap:6px}
.results-grid{display:flex;flex-direction:column;gap:12px}
.result-item{display:flex;justify-content:space-between;align-items:center;padding:12px 14px;background:var(--bg-subtle);border-radius:var(--radius-sm);border:1px solid var(--border)}
.result-label{font-size:0.82rem;color:var(--text-dim);font-weight:500}
.result-value{font-size:1.1rem;font-weight:800;color:var(--text);font-variant-numeric:tabular-nums}
.result-value.accent{color:var(--accent)}
.result-value.green{color:var(--green)}
.result-equivalent{margin-top:4px;padding:14px;background:var(--green-bg);border:1px solid var(--green-border);border-radius:var(--radius-sm);text-align:center}
.result-equivalent-label{font-size:0.75rem;color:var(--text-muted);margin-bottom:4px}
.result-equivalent-value{font-size:1.4rem;font-weight:800;color:var(--green)}
.result-equivalent-desc{font-size:0.78rem;color:var(--text-dim);margin-top:4px}
.result-equivalent-note{font-size:0.72rem;color:var(--text-muted);margin-top:6px}

/* Empty state (before input) */
.results-empty{text-align:center;padding:20px;color:var(--text-muted);font-size:0.85rem}

/* Disclaimer */
.disclaimer{margin-top:6px;padding:12px 16px;font-size:0.72rem;color:var(--text-muted);line-height:1.5;background:var(--bg-faint);border:1px solid var(--border);border-radius:var(--radius-sm)}

/* CTA */
.cta-card{text-align:center;padding:24px 20px;cursor:pointer;transition:transform 0.2s,box-shadow 0.2s;border:1px dashed var(--accent-border);background:var(--accent-subtle)}
.cta-card:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(124,106,255,0.12)}
.cta-card:active{transform:scale(0.98)}
.cta-icon{font-size:1.8rem;margin-bottom:8px}
.cta-title{font-weight:700;font-size:0.95rem;color:var(--accent);margin-bottom:4px}
.cta-desc{font-size:0.8rem;color:var(--text-dim);line-height:1.5}
.cta-link{display:inline-block;margin-top:12px;padding:10px 24px;background:var(--accent);color:white;border-radius:var(--radius-sm);font-size:0.85rem;font-weight:600;text-decoration:none;transition:all var(--transition);box-shadow:0 4px 20px var(--accent-glow)}
.cta-link:hover{transform:translateY(-1px);box-shadow:0 6px 25px var(--accent-glow)}

/* Footer */
.converter-footer{text-align:center;padding:24px 0 16px;font-size:0.7rem;color:var(--text-muted);opacity:0.7}
.converter-footer a{color:var(--text-dim);text-decoration:underline}
.converter-footer a:hover{opacity:0.8}

/* Methodology */
.methodology-card{cursor:default}
.methodology-title{font-size:0.78rem;font-weight:600;color:var(--text-dim);cursor:pointer;list-style:none;display:flex;align-items:center;gap:6px}
.methodology-title::-webkit-details-marker{display:none}
.methodology-title::before{content:'▸';font-size:0.7rem;transition:transform var(--transition)}
details[open] .methodology-title::before{transform:rotate(90deg)}
.methodology-text{font-size:0.72rem;color:var(--text-muted);line-height:1.6;margin-top:10px}
.methodology-removed{padding:8px 12px;background:var(--bg-faint);border:1px solid var(--border);border-radius:var(--radius-sm)}
.methodology-sources{font-style:italic;opacity:0.8}

/* Animations */
@keyframes slide-up{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}
.animate-in{animation:slide-up 0.3s ease forwards}

/* Focus-visible */
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}

/* Reduced motion — WCAG 2.1 C39 standard pattern */
@media(prefers-reduced-motion:reduce){
  /* stylelint-disable-next-line declaration-no-important */
  *,*::before,*::after{animation-duration:0.01ms!important;animation-iteration-count:1!important;transition-duration:0.01ms!important;scroll-behavior:auto!important}
}

/* Responsive */
@media(max-width:360px){
  .converter-root{padding:16px 12px 48px}
  .conv-card{padding:18px}
  .converter-title{font-size:1.4rem}
  .exercise-grid{grid-template-columns:1fr 1fr;gap:6px}
}

/* ════════════════════════════════════════════════════════════
   LIGHT MODE — Frosted Glass Light (matching Calipath)
   ════════════════════════════════════════════════════════════ */
@media(prefers-color-scheme:light){
  :root{
    --bg:#f8f6f1;
    --bg-card:rgba(0,0,0,0.025);
    --bg-subtle:rgba(0,0,0,0.02);
    --bg-faint:rgba(0,0,0,0.015);
    --surface-1:rgba(255,251,244,0.7);
    --surface-2:rgba(255,251,244,0.85);
    --border:rgba(0,0,0,0.08);
    --border-accent:rgba(100,80,220,0.25);
    --text:#1a1a2e;
    --text-dim:#556;
    --text-muted:#8888a0;
    --accent:#6450dc;
    --accent-glow:rgba(100,80,220,0.2);
    --accent-subtle:rgba(100,80,220,0.04);
    --accent-bg:rgba(100,80,220,0.06);
    --accent-dim:rgba(100,80,220,0.12);
    --accent-border:rgba(100,80,220,0.18);
    --green:#059669;
    --green-glow:rgba(5,150,105,0.15);
    --green-dim:rgba(5,150,105,0.08);
    --green-bg:rgba(5,150,105,0.06);
    --green-border:rgba(5,150,105,0.15);
    --amber:#d97706;
    --amber-dim:rgba(217,119,6,0.08);
    --amber-border:rgba(217,119,6,0.2);
    --red:#dc2626;
  }
  body::before{
    background:radial-gradient(ellipse 80% 60% at 70% 15%,rgba(255,200,160,0.12) 0%,transparent 65%),
               radial-gradient(ellipse 60% 50% at 25% 85%,rgba(180,160,240,0.08) 0%,transparent 55%),
               radial-gradient(ellipse 40% 40% at 50% 50%,rgba(255,220,190,0.06) 0%,transparent 70%)}
  body::after{opacity:0.015}
  .conv-card{border-color:rgba(0,0,0,0.06);box-shadow:inset 0 0.5px 0 rgba(255,255,255,0.7),0 2px 16px rgba(0,0,0,0.06)}
  .exercise-btn{box-shadow:inset 0 0.5px 0 rgba(255,255,255,0.6)}
  .exercise-muscle{color:#666}
  .cta-link{color:white}
}