/* WorkoutApp — Maison Ombré (dunkle Ausstellungs-Ästhetik)
   Palette: Basalt / Sahne / Oxblood / Champagner / Concrete */
:root {
  --basalt: #1A1816;
  --basalt-2: #211E1B;
  --cream: #E8E2D5;
  --oxblood: #6F2229;
  --champagne: #A48F5C;
  --concrete: #C9C5BD;
  --hair: rgba(232, 226, 213, 0.14);
  --hair-strong: rgba(232, 226, 213, 0.28);
  --ink-dim: rgba(232, 226, 213, 0.55);
  --serif: "Cormorant Garamond", Georgia, "Times New Roman", serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--basalt);
  color: var(--cream);
  font-family: var(--sans);
  font-weight: 300;
  line-height: 1.6;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
}

.vignette {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(120% 90% at 50% -10%, rgba(164, 143, 92, 0.10), transparent 55%),
    radial-gradient(90% 80% at 80% 110%, rgba(111, 34, 41, 0.12), transparent 60%);
  z-index: 0;
}

header, nav, main, footer { position: relative; z-index: 1; }

/* Masthead */
.masthead {
  max-width: 880px;
  margin: 0 auto;
  padding: 64px 28px 28px;
  text-align: center;
}
.eyebrow {
  margin: 0;
  font-size: 0.72rem;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--champagne);
}
.masthead h1 {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 600;
  font-size: clamp(3rem, 9vw, 5.5rem);
  line-height: 0.95;
  margin: 0.12em 0 0.18em;
  color: var(--cream);
}
.lede { margin: 0; color: var(--ink-dim); font-size: 0.9rem; }

/* Tabs */
.tabs {
  display: flex;
  justify-content: center;
  gap: 0;
  border-top: 0.5px solid var(--hair);
  border-bottom: 0.5px solid var(--hair);
  max-width: 880px;
  margin: 0 auto;
}
.tab {
  appearance: none;
  background: none;
  border: none;
  color: var(--ink-dim);
  font-family: var(--sans);
  font-size: 0.74rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  padding: 18px 26px;
  cursor: pointer;
  position: relative;
  transition: color 0.25s ease;
}
.tab:hover { color: var(--cream); }
.tab.is-active { color: var(--cream); }
.tab.is-active::after {
  content: "";
  position: absolute;
  left: 26px; right: 26px; bottom: -0.5px;
  height: 1px;
  background: var(--champagne);
}

/* Panels */
main { max-width: 880px; margin: 0 auto; padding: 40px 28px 24px; }
.panel { animation: fade 0.4s ease; }
.panel[hidden] { display: none; }
@keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

h2 {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 500;
  font-size: 2rem;
  margin: 0 0 0.4em;
}
.hint { color: var(--ink-dim); font-size: 0.9rem; max-width: 56ch; }
.hint code, .micro code, .colophon code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.82em;
  color: var(--champagne);
  background: rgba(164,143,92,0.08);
  padding: 0.08em 0.4em;
  border-radius: 2px;
}
.micro { color: var(--ink-dim); font-size: 0.78rem; min-height: 1.2em; }

/* Coach */
.feed {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 22px 0;
  min-height: 80px;
}
.entry {
  border: 0.5px solid var(--hair);
  border-left: 2px solid var(--oxblood);
  background: var(--basalt-2);
  padding: 12px 16px;
}
.entry .ex { font-family: var(--serif); font-style: italic; font-size: 1.25rem; }
.entry .sets { color: var(--concrete); font-size: 0.88rem; letter-spacing: 0.04em; }
.entry .tag {
  float: right;
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--champagne);
  border: 0.5px solid var(--hair-strong);
  padding: 2px 8px;
}
.composer { display: flex; gap: 10px; margin-top: 8px; }
.composer input {
  flex: 1;
  background: var(--basalt-2);
  border: 0.5px solid var(--hair-strong);
  color: var(--cream);
  font-family: var(--sans);
  font-size: 0.95rem;
  padding: 13px 16px;
  outline: none;
}
.composer input:focus { border-color: var(--champagne); }
.composer button, .field select {
  font-family: var(--sans);
}
.composer button {
  background: var(--oxblood);
  color: var(--cream);
  border: none;
  padding: 0 24px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 0.74rem;
  cursor: pointer;
  transition: background 0.2s ease;
}
.composer button:hover { background: #842a32; }

/* Stats */
.field { display: inline-flex; flex-direction: column; gap: 6px; margin: 8px 0 20px; }
.field span { font-size: 0.68rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--ink-dim); }
.field select {
  background: var(--basalt-2);
  border: 0.5px solid var(--hair-strong);
  color: var(--cream);
  padding: 10px 14px;
  font-size: 0.95rem;
  min-width: 220px;
  outline: none;
}
.field select:focus { border-color: var(--champagne); }
.chart-wrap { border: 0.5px solid var(--hair); background: var(--basalt-2); padding: 16px; }
canvas { width: 100%; height: auto; display: block; }
.legend { display: flex; gap: 22px; margin: 12px 2px; font-size: 0.78rem; color: var(--ink-dim); }
.key { display: inline-flex; align-items: center; gap: 8px; }
.swatch { width: 14px; height: 2px; display: inline-block; }
.swatch.oxblood { background: var(--oxblood); height: 3px; }
.swatch.champagne { background: var(--champagne); height: 0; border-top: 2px dashed var(--champagne); }

/* History */
.sessions { list-style: none; padding: 0; margin: 18px 0; }
.sessions li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 0.5px solid var(--hair);
  padding: 14px 2px;
}
.sessions .date { font-family: var(--serif); font-style: italic; font-size: 1.3rem; }
.sessions .meta { color: var(--ink-dim); font-size: 0.84rem; }
.badge {
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 3px 9px;
  border: 0.5px solid var(--hair-strong);
}
.badge.done { color: var(--champagne); border-color: rgba(164,143,92,0.5); }
.badge.open { color: var(--oxblood); border-color: rgba(111,34,41,0.6); }

/* Colophon */
.colophon {
  max-width: 880px;
  margin: 32px auto 0;
  padding: 22px 28px 56px;
  border-top: 0.5px solid var(--hair);
  color: var(--ink-dim);
  font-size: 0.8rem;
}
.colophon strong { color: var(--concrete); font-weight: 400; }