/* Training Tracker — v1
 * Dark mode only. Paper-tracker digital sibling.
 * No red. Violet = active/next. Green = completed. Amber = below-target cue (hollow check).
 */

:root {
  /* Tone: near-black with a hint of cool violet */
  --bg:            oklch(0.14 0.005 280);
  --bg-elev:       oklch(0.18 0.006 280);
  --bg-elev-2:     oklch(0.22 0.008 280);
  --line:          oklch(0.28 0.008 280);
  --line-soft:     oklch(0.24 0.006 280 / 0.6);

  --fg:            oklch(0.97 0.003 280);
  --fg-muted:      oklch(0.72 0.008 280);
  --fg-dim:        oklch(0.52 0.008 280);
  --fg-faint:      oklch(0.38 0.008 280);

  /* Accents — translucent, shared chroma/lightness on the stroke */
  --violet:        oklch(0.72 0.14 295);
  --violet-fill:   oklch(0.55 0.16 295 / 0.22);
  --violet-glow:   oklch(0.72 0.14 295 / 0.35);

  --green:         oklch(0.78 0.14 155);
  --green-fill:    oklch(0.55 0.14 155 / 0.20);

  --amber:         oklch(0.82 0.12 80);

  --radius:        14px;
  --radius-lg:     22px;
  --radius-sm:     8px;

  --font-ui:       'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono:     'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --tap:           48px;     /* HIG minimum */
  --pad:           20px;
  --safe-top:      env(safe-area-inset-top, 0px);
  --safe-bottom:   env(safe-area-inset-bottom, 0px);
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-ui);
  font-size: 16px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "ss01", "cv11";
  overscroll-behavior: none;
}

body { min-height: 100dvh; }

button {
  font: inherit; color: inherit;
  background: transparent; border: 0; padding: 0;
  cursor: pointer;
}
input, textarea {
  font: inherit; color: inherit;
  background: transparent; border: 0; outline: 0;
  -webkit-appearance: none; appearance: none;
}

.mono { font-family: var(--font-mono); font-feature-settings: "tnum"; }

/* ───────── screen shell ───────── */

.screen {
  display: none;
  flex-direction: column;
  min-height: 100dvh;
  padding-top: calc(var(--safe-top) + 8px);
  padding-bottom: calc(var(--safe-bottom) + 8px);
}
.screen.active { display: flex; }

.bar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px var(--pad) 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-dim);
}
.bar .date { color: var(--fg-muted); }
.bar .meta { color: var(--fg-dim); }

.content { flex: 1; padding: 8px var(--pad) 16px; }

/* ───────── home screen ───────── */

.home-title {
  font-family: var(--font-ui);
  font-weight: 500;
  font-size: 28px;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 16px 0 4px;
  color: var(--fg);
}
.home-title .light { color: var(--fg-muted); font-weight: 300; }
.home-sub {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--fg-dim);
  margin-bottom: 28px;
}

.field-list {
  display: flex; flex-direction: column;
  border-top: 1px solid var(--line-soft);
  margin-bottom: 24px;
}
.field {
  display: flex; align-items: center; justify-content: space-between;
  min-height: var(--tap);
  padding: 10px 0;
  border-bottom: 1px solid var(--line-soft);
  cursor: pointer;
}
.field:active { background: var(--bg-elev); }
.field-label {
  font-size: 15px;
  color: var(--fg-muted);
  letter-spacing: -0.005em;
}
.field-value {
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--fg);
  font-variant-numeric: tabular-nums;
  display: flex; align-items: baseline; gap: 6px;
}
.field-value .unit {
  font-size: 12px;
  color: var(--fg-dim);
  letter-spacing: 0.02em;
}
.field-value.empty {
  color: var(--fg-faint);
  font-size: 14px;
  letter-spacing: 0.02em;
}

/* pain scale chip */
.pain-dots {
  display: flex; gap: 3px; align-items: center;
}
.pain-dots .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--line);
}
.pain-dots .dot.on { background: var(--fg-muted); }

/* start button */
.start-btn {
  width: 100%;
  min-height: 64px;
  border-radius: var(--radius);
  background: var(--violet-fill);
  border: 1px solid var(--violet);
  color: var(--fg);
  font-size: 17px;
  font-weight: 500;
  letter-spacing: -0.005em;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 22px;
  margin-top: auto;
  transition: transform 80ms ease, background 120ms ease;
}
.start-btn:active {
  transform: scale(0.985);
  background: oklch(0.55 0.16 295 / 0.32);
}
.start-btn .arrow {
  font-family: var(--font-mono);
  color: var(--violet);
  font-size: 20px;
}
.start-btn .session-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-top: 2px;
}
.start-btn .btn-stack { display: flex; flex-direction: column; align-items: flex-start; gap: 2px; }

/* editable plan chips in home header */
.plan-edit {
  color: inherit;
  font: inherit;
  background: transparent;
  border: 0;
  padding: 1px 4px;
  margin: 0 -4px;
  border-radius: 6px;
  cursor: pointer;
  transition: background 100ms ease;
  border-bottom: 1px dashed var(--line);
}
.plan-edit:active { background: var(--bg-elev); }
.plan-edit.small {
  font-family: var(--font-mono);
  font-size: inherit;
  letter-spacing: inherit;
  color: var(--fg-dim);
}
.plan-edit.small:active,
.plan-edit.small:hover { color: var(--fg-muted); }
.home-title .plan-edit {
  border-bottom: 1px dashed oklch(0.32 0.008 280);
}

/* skip / did-not-train */
.skip-btn {
  width: 100%;
  min-height: 48px;
  margin-top: 12px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--fg-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.skip-btn:active { background: var(--bg-elev); color: var(--fg); }

.skipped-card {
  margin: 18px 0 0;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--bg-elev);
}
.skipped-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px;
}
.skipped-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.skipped-undo {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--violet);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 6px 10px;
  border: 1px solid var(--violet);
  border-radius: 999px;
  background: var(--violet-fill);
}
.skipped-note {
  margin-top: 8px;
  font-size: 14px;
  color: var(--fg-muted);
  font-style: italic;
}

/* ───────── session screen ───────── */

.session-bar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px var(--pad);
  border-bottom: 1px solid var(--line-soft);
}
.progress-chip {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.progress-chip b { color: var(--fg); font-weight: 500; }
.progress-bar-track {
  flex: 1;
  height: 2px;
  margin: 0 14px;
  background: var(--line);
  border-radius: 2px;
  overflow: hidden;
}
.progress-bar-fill {
  height: 100%;
  background: var(--violet);
  transition: width 250ms ease;
}

.movement-header {
  padding: 22px var(--pad) 8px;
  display: flex; flex-direction: column; gap: 4px;
  position: relative;
}
.movement-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-dim);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.movement-name {
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.015em;
  line-height: 1.2;
  color: var(--fg);
}
.movement-name.swapped {
  font-style: italic;
  color: var(--fg-muted);
}
.movement-edit {
  position: absolute;
  top: 22px; right: var(--pad);
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--fg-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  min-height: 28px;
  display: flex; align-items: center;
}

/* set card stack */
.sets-stack {
  padding: 8px var(--pad) 0;
  display: flex; flex-direction: column; gap: 6px;
}

/* Completed set — small row */
.set-done {
  display: flex; align-items: center; gap: 12px;
  min-height: 38px;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--fg-muted);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.01em;
}
.set-done .check {
  width: 18px; height: 18px;
  border-radius: 50%;
  border: 1.5px solid var(--green);
  background: var(--green-fill);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.set-done .check svg { width: 10px; height: 10px; }
.set-done.below .check {
  border-color: var(--amber);
  background: transparent;
}
.set-done.below .check svg path { stroke: var(--amber); }
.set-done .label { color: var(--fg-dim); width: 46px; }
.set-done .stats {
  color: var(--fg-muted);
  font-variant-numeric: tabular-nums;
}
.set-done .stats .target-diff {
  color: var(--fg-faint);
  margin-left: 8px;
  font-size: 12px;
}
.set-done .stats .target-diff.below { color: var(--amber); }

/* Upcoming set — dimmed row */
.set-upcoming {
  display: flex; align-items: center; gap: 12px;
  min-height: 38px;
  padding: 6px 12px;
  color: var(--fg-faint);
  font-family: var(--font-mono);
  font-size: 13px;
}
.set-upcoming .dot {
  width: 18px; height: 18px; border-radius: 50%;
  border: 1.5px dashed var(--line);
  flex-shrink: 0;
}
.set-upcoming .label { width: 46px; }
.set-upcoming .stats { font-variant-numeric: tabular-nums; }

/* Active set — large card */
.set-active {
  margin-top: 14px;
  border-radius: var(--radius-lg);
  background: var(--bg-elev);
  border: 1px solid var(--violet);
  box-shadow: 0 0 0 6px var(--violet-fill);
  overflow: hidden;
  position: relative;
}
.set-active::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(120% 80% at 50% 0%, var(--violet-fill), transparent 60%);
  pointer-events: none;
  opacity: 0.5;
}

.set-active-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--violet);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  position: relative;
}

.set-numbers {
  display: flex; align-items: flex-end; gap: 18px;
  padding: 0 18px 14px;
  position: relative;
}
.num-block {
  display: flex; flex-direction: column;
  flex: 1;
}
.num-block .cap {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--fg-dim);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 2px;
}
.num-value {
  font-family: var(--font-mono);
  font-size: 52px;
  line-height: 0.95;
  font-weight: 500;
  color: var(--fg);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  cursor: pointer;
  padding: 2px 0;
  min-width: 72px;
}
.num-value .x {
  color: var(--fg-faint);
  font-weight: 300;
  margin: 0 4px;
}
.num-unit {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-dim);
  letter-spacing: 0.05em;
  margin-top: 6px;
}

/* stepper */
.stepper {
  display: flex; align-items: center; gap: 0;
  padding: 0 18px 14px;
  position: relative;
}
.step-btn {
  width: var(--tap); height: var(--tap);
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--bg-elev-2);
  font-family: var(--font-mono);
  font-size: 22px;
  color: var(--fg);
  display: flex; align-items: center; justify-content: center;
  transition: background 100ms ease, transform 80ms ease;
  user-select: none;
}
.step-btn:active { background: var(--line); transform: scale(0.94); }
.step-readout {
  flex: 1; text-align: center;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--fg-muted);
  font-variant-numeric: tabular-nums;
}
.step-readout b { color: var(--fg); font-weight: 500; }
.step-readout .hint {
  display: block;
  font-size: 9px;
  color: var(--fg-faint);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-top: 2px;
}

/* the big tap */
.done-btn {
  width: calc(100% - 36px);
  margin: 0 18px 16px;
  min-height: 72px;
  border-radius: 16px;
  background: var(--violet-fill);
  border: 1px solid var(--violet);
  color: var(--fg);
  font-size: 18px;
  font-weight: 500;
  letter-spacing: -0.005em;
  font-family: var(--font-ui);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 2px;
  position: relative;
  transition: transform 80ms ease, background 100ms ease;
}
.done-btn:active {
  transform: scale(0.985);
  background: oklch(0.55 0.16 295 / 0.36);
}
.done-btn .hint {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--violet);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.75;
}

/* movement footer nav */
.mv-nav {
  display: flex; align-items: stretch; gap: 8px;
  padding: 8px var(--pad) 16px;
  margin-top: auto;
  border-top: 1px solid var(--line-soft);
}
.mv-nav button {
  flex: 1;
  min-height: var(--tap);
  border-radius: 10px;
  background: transparent;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  display: flex; align-items: center; justify-content: center; gap: 8px;
}
.mv-nav button:active { background: var(--bg-elev); }
.mv-nav button:disabled {
  color: var(--fg-faint);
  border-color: var(--line-soft);
}
.mv-nav .finish {
  background: var(--violet-fill);
  border-color: var(--violet);
  color: var(--fg);
}

/* ───────── post-session ───────── */

.post-title {
  font-family: var(--font-ui);
  font-size: 24px;
  font-weight: 500;
  letter-spacing: -0.015em;
  margin: 24px 0 4px;
}
.post-sub {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 24px;
}
.felt-box {
  width: 100%;
  min-height: 96px;
  padding: 14px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--bg-elev);
  font-size: 16px;
  line-height: 1.45;
  color: var(--fg);
  font-family: var(--font-ui);
  resize: none;
  margin-bottom: 18px;
}
.felt-box::placeholder { color: var(--fg-faint); }
.felt-box:focus { border-color: var(--violet); }

.finish-btn {
  width: 100%;
  min-height: 64px;
  border-radius: var(--radius);
  background: var(--green-fill);
  border: 1px solid var(--green);
  color: var(--fg);
  font-size: 17px;
  font-weight: 500;
  margin-top: 16px;
  display: flex; align-items: center; justify-content: center; gap: 10px;
  transition: transform 80ms ease;
}
.finish-btn:active { transform: scale(0.985); }

/* ───────── undo toast ───────── */

.undo-toast {
  position: fixed;
  left: 50%; bottom: calc(24px + var(--safe-bottom));
  transform: translateX(-50%) translateY(calc(100% + 48px + var(--safe-bottom)));
  transition: transform 220ms cubic-bezier(.3,.8,.3,1);
  display: flex; align-items: center; gap: 0;
  background: var(--bg-elev-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 4px 4px 18px;
  box-shadow: 0 10px 32px rgba(0,0,0,0.4);
  z-index: 100;
  min-height: 48px;
  max-width: calc(100% - 32px);
}
.undo-toast.show { transform: translateX(-50%) translateY(0); }
.undo-toast .msg {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--fg-muted);
  letter-spacing: 0.04em;
  padding-right: 14px;
  white-space: nowrap;
}
.undo-toast .msg b { color: var(--fg); font-weight: 500; }
.undo-toast .undo {
  min-height: 40px;
  padding: 0 18px;
  border-radius: 999px;
  background: var(--violet-fill);
  border: 1px solid var(--violet);
  color: var(--fg);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  display: flex; align-items: center;
}
.undo-toast .progress {
  position: absolute;
  left: 18px; right: 4px; bottom: 3px;
  height: 1px;
  background: var(--violet);
  transform-origin: left;
  animation: toast-progress 4s linear forwards;
  opacity: 0.6;
}
@keyframes toast-progress {
  from { transform: scaleX(1); }
  to   { transform: scaleX(0); }
}

/* ───────── quick-edit sheet (number override & swap) ───────── */

.sheet-backdrop {
  position: fixed; inset: 0;
  background: oklch(0 0 0 / 0.5);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 90;
  opacity: 0; pointer-events: none;
  transition: opacity 160ms ease;
}
.sheet-backdrop.show { opacity: 1; pointer-events: auto; }

.sheet {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 95;
  background: var(--bg-elev);
  border-top-left-radius: 20px;
  border-top-right-radius: 20px;
  border-top: 1px solid var(--line);
  padding: 16px 20px calc(20px + var(--safe-bottom));
  transform: translateY(100%);
  transition: transform 220ms cubic-bezier(.3,.8,.3,1);
}
.sheet.show { transform: translateY(0); }
.sheet .grip {
  width: 36px; height: 4px;
  border-radius: 2px;
  background: var(--line);
  margin: 0 auto 14px;
}
.sheet h3 {
  font-size: 15px;
  font-weight: 500;
  color: var(--fg);
  margin: 0 0 4px;
  letter-spacing: -0.01em;
}
.sheet p {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-dim);
  letter-spacing: 0.04em;
  margin: 0 0 16px;
}
.sheet-input {
  width: 100%;
  min-height: 56px;
  padding: 0 16px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--bg);
  font-family: var(--font-mono);
  font-size: 24px;
  color: var(--fg);
  font-variant-numeric: tabular-nums;
}
.sheet-input:focus { border-color: var(--violet); }
.sheet textarea.sheet-input {
  min-height: 88px;
  font-family: var(--font-ui);
  font-size: 16px;
  padding: 14px 16px;
  line-height: 1.4;
  resize: none;
}
.sheet-row {
  display: flex; gap: 10px;
  margin-top: 14px;
}
.sheet-row button {
  flex: 1;
  min-height: var(--tap);
  border-radius: 10px;
  border: 1px solid var(--line);
  font-family: var(--font-ui);
  font-size: 15px;
  color: var(--fg);
}
.sheet-row button.primary {
  background: var(--violet-fill);
  border-color: var(--violet);
}
.sheet-row button.danger {
  color: var(--fg-muted);
}

/* ───────── finish day flash ───────── */

.day-flash {
  position: fixed; inset: 0;
  z-index: 200;
  background: var(--green-fill);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity 220ms ease;
}
.day-flash.show { opacity: 1; pointer-events: auto; }
.day-flash .check {
  width: 84px; height: 84px;
  border-radius: 50%;
  border: 2px solid var(--green);
  display: flex; align-items: center; justify-content: center;
  transform: scale(0.6);
  transition: transform 280ms cubic-bezier(.3,1.5,.4,1);
}
.day-flash.show .check { transform: scale(1); }
.day-flash .check svg { width: 40px; height: 40px; }

/* session complete — surface finish button */
.session-complete-banner {
  margin: 18px 18px 0;
  padding: 18px;
  border-radius: 16px;
  border: 1px solid var(--green);
  background: var(--green-fill);
  text-align: center;
}
.session-complete-banner h4 {
  margin: 0 0 4px;
  font-size: 16px; font-weight: 500;
  letter-spacing: -0.005em;
}
.session-complete-banner p {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.session-complete-banner button {
  width: 100%;
  min-height: 56px;
  border-radius: 12px;
  background: var(--fg);
  color: var(--bg);
  font-size: 16px; font-weight: 500;
}