/* ============================================================
   GripTrack design system v2 — mobile-first, no build step.
   Light & dark via prefers-color-scheme; big touch targets for
   between-sets use in the gym; gradient accent + micro-interactions.
   ============================================================ */

:root {
  --bg: #f3f4f6;
  --bg-wash: rgba(232, 83, 44, .05);
  --surface: #ffffff;
  --surface-2: #eef0f3;
  --text: #14181f;
  --muted: #68727f;
  --border: #e3e6ea;
  --accent: #e8532c;
  --accent-2: #f1372e;
  --accent-grad: linear-gradient(135deg, #ff7a3d 0%, #e8532c 55%, #e0302a 100%);
  --accent-soft: #fdece5;
  --accent-contrast: #ffffff;
  --accent-glow: 0 10px 28px -8px rgba(232, 83, 44, .55);
  --ok: #189d5c;
  --ok-soft: #e0f5eb;
  --danger: #d64545;
  --shadow: 0 1px 2px rgba(20, 24, 31, .06), 0 8px 24px -8px rgba(20, 24, 31, .12);
  --radius: 18px;
  --touch: 3rem;
  --tabbar-h: calc(4rem + env(safe-area-inset-bottom));
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0d12;
    --bg-wash: rgba(255, 116, 72, .07);
    --surface: #14171e;
    --surface-2: #1d222b;
    --text: #eceef1;
    --muted: #93a4b4;
    --border: #262c37;
    --accent: #ff7448;
    --accent-2: #ff5d3a;
    --accent-grad: linear-gradient(135deg, #ff9153 0%, #ff6a3d 55%, #f4442e 100%);
    --accent-soft: #33201a;
    --accent-contrast: #190f0b;
    --accent-glow: 0 10px 30px -8px rgba(255, 106, 61, .5);
    --ok: #3fca86;
    --ok-soft: #14312a;
    --shadow: 0 1px 2px rgba(0, 0, 0, .5), 0 12px 32px -12px rgba(0, 0, 0, .6);
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background:
    radial-gradient(1100px 480px at 85% -8%, var(--bg-wash), transparent 65%),
    radial-gradient(800px 400px at -10% 110%, var(--bg-wash), transparent 60%),
    var(--bg);
  background-attachment: fixed;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.55;
}

/* ---------- header ---------- */

.app-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .65rem 1.1rem;
  padding-top: calc(.65rem + env(safe-area-inset-top));
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  -webkit-backdrop-filter: blur(16px) saturate(1.3);
  backdrop-filter: blur(16px) saturate(1.3);
  border-bottom: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
}

.wordmark {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.wordmark a { color: var(--text); text-decoration: none; }

.wordmark .dot {
  background: var(--accent-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.logout-form { margin: 0; }

.logout-form button {
  min-height: 2.2rem;
  width: auto;
  padding: .2rem .85rem;
  font-size: .82rem;
  font-weight: 650;
  color: var(--muted);
  background: color-mix(in srgb, var(--surface-2) 80%, transparent);
  border: 1px solid var(--border);
  border-radius: 999px;
  box-shadow: none;
}

/* ---------- layout ---------- */

.app-main {
  max-width: 620px;
  margin: 0 auto;
  padding: 1.1rem 1.1rem calc(var(--tabbar-h) + 1.6rem);
  animation: page-in .28s cubic-bezier(.2, .7, .3, 1) both;
}

@keyframes page-in {
  from { opacity: 0; transform: translateY(7px); }
  to { opacity: 1; transform: none; }
}

.app-main > h2 {
  font-size: 1.65rem;
  font-weight: 800;
  letter-spacing: -0.035em;
  margin: .4rem 0 .35rem;
}

.page-sub {
  color: var(--muted);
  margin: 0 0 1.15rem;
  font-size: .93rem;
}

/* ---------- bottom tab bar ---------- */

.tabbar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  height: var(--tabbar-h);
  padding-bottom: env(safe-area-inset-bottom);
  background: color-mix(in srgb, var(--surface) 82%, transparent);
  -webkit-backdrop-filter: blur(18px) saturate(1.3);
  backdrop-filter: blur(18px) saturate(1.3);
  border-top: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
}

.tabbar a {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: .18rem;
  font-size: .67rem;
  font-weight: 650;
  color: var(--muted);
  text-decoration: none;
  transition: color .15s ease, transform .1s ease;
}

.tabbar a:active { transform: scale(.94); }

.tabbar a svg {
  width: 23px;
  height: 23px;
  padding: 3px 10px;
  border-radius: 999px;
  transition: background .2s ease;
  box-sizing: content-box;
}

.tabbar a.active { color: var(--accent); }

.tabbar a.active svg { background: var(--accent-soft); }

/* ---------- cards ---------- */

.card {
  background: linear-gradient(180deg, color-mix(in srgb, var(--surface) 100%, transparent), var(--surface));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.15rem 1.15rem;
  margin-bottom: 1rem;
}

.card h3 {
  margin: 0 0 .8rem;
  font-size: 1rem;
  font-weight: 750;
  letter-spacing: -0.01em;
}

/* ---------- forms ---------- */

label {
  display: block;
  margin-bottom: .95rem;
  font-size: .82rem;
  font-weight: 650;
  color: var(--muted);
}

input, select {
  display: block;
  width: 100%;
  margin-top: .32rem;
  min-height: var(--touch);
  padding: .4rem .85rem;
  font-size: 1.05rem;
  font-family: inherit;
  color: var(--text);
  background: var(--surface-2);
  border: 1.5px solid transparent;
  border-radius: 12px;
  outline: none;
  transition: border-color .15s ease, background .15s ease, box-shadow .15s ease;
}

input:focus, select:focus {
  border-color: var(--accent);
  background: var(--surface);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 16%, transparent);
}

/* custom checkbox — the warmup tick deserves to feel good */
input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  display: inline-grid;
  place-content: center;
  width: 1.9rem;
  height: 1.9rem;
  min-height: 0;
  margin: 0;
  padding: 0;
  background: var(--surface-2);
  border: 2px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  transition: background .18s ease, border-color .18s ease, transform .12s ease;
}

input[type="checkbox"]::before {
  content: "";
  width: .95rem;
  height: .95rem;
  transform: scale(0);
  transition: transform .16s cubic-bezier(.2, .9, .3, 1.4);
  background: var(--accent-contrast);
  clip-path: polygon(14% 46%, 0 62%, 40% 100%, 100% 18%, 84% 4%, 38% 70%);
}

input[type="checkbox"]:checked {
  background: var(--accent-grad);
  border-color: transparent;
  box-shadow: var(--accent-glow);
}

input[type="checkbox"]:checked::before { transform: scale(1); }

input[type="checkbox"]:active { transform: scale(.9); }

button, .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  min-height: var(--touch);
  width: 100%;
  padding: .5rem 1.1rem;
  font-size: 1.02rem;
  font-weight: 750;
  font-family: inherit;
  letter-spacing: -0.01em;
  color: var(--accent-contrast);
  background: var(--accent-grad);
  border: none;
  border-radius: 13px;
  box-shadow: var(--accent-glow);
  cursor: pointer;
  text-decoration: none;
  transition: transform .08s ease, box-shadow .15s ease, filter .15s ease;
}

button:hover, .btn:hover { filter: brightness(1.05); }

button:active, .btn:active {
  transform: scale(.975);
  box-shadow: 0 4px 14px -6px rgba(232, 83, 44, .4);
}

.btn-secondary {
  color: var(--text);
  background: var(--surface);
  border: 1.5px solid var(--border);
  box-shadow: var(--shadow);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .85rem;
}

/* ---------- tables ---------- */

table {
  width: 100%;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
}

th {
  text-align: left;
  font-size: .7rem;
  font-weight: 750;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--muted);
  padding: .45rem .55rem;
  border-bottom: 1px solid var(--border);
}

td {
  padding: .65rem .55rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

tr:last-child td { border-bottom: none; }

/* ---------- lists ---------- */

ul.plain { list-style: none; margin: 0; padding: 0; }

/* ---------- home ---------- */

.hero-action { margin: .3rem 0 1.05rem; }

.hero-action .btn {
  min-height: 3.6rem;
  font-size: 1.12rem;
  border-radius: 16px;
}

.quick-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .85rem;
}

.quick-grid a {
  display: flex;
  flex-direction: column;
  gap: .32rem;
  padding: 1rem 1.05rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  color: var(--text);
  text-decoration: none;
  font-weight: 720;
  font-size: .95rem;
  letter-spacing: -0.01em;
  transition: transform .1s ease, border-color .15s ease;
}

.quick-grid a:active { transform: scale(.97); }

.quick-grid a small {
  color: var(--muted);
  font-weight: 500;
  font-size: .77rem;
}

.quick-grid a svg { width: 22px; height: 22px; color: var(--accent); }

/* ---------- auth pages ---------- */

.auth-wrap { max-width: 400px; margin: 2rem auto 0; }

.auth-wrap .brand {
  text-align: center;
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.045em;
  margin-bottom: 1.3rem;
}

.auth-alt {
  text-align: center;
  font-size: .92rem;
  color: var(--muted);
  margin-top: 1.1rem;
}

.auth-alt a { color: var(--accent); font-weight: 650; }

/* ---------- warmup checklist ---------- */

.session-started {
  display: inline-block;
  padding: .28rem .8rem;
  margin: 0 0 1rem;
  font-size: .8rem;
  font-weight: 750;
  color: var(--ok);
  background: var(--ok-soft);
  border-radius: 999px;
}

.session-started::before { content: "● "; font-size: .6rem; vertical-align: 2px; }

.ramp-table td:first-child {
  font-weight: 750;
  color: var(--muted);
  font-size: .92rem;
  white-space: nowrap;
}

.ramp-cell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .8rem;
}

.ramp-cell form { margin: 0; display: flex; }

.ramp-weight {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
}

.ramp-unit { color: var(--muted); font-size: .78rem; font-weight: 650; }

/* ---------- work sets ---------- */

.table-scroll { overflow-x: auto; }

.workset-cell form {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr auto;
  gap: .4rem;
  align-items: end;
  margin: 0;
}

.workset-cell .set-done { margin-bottom: .4rem; }

.workset-cell .mini { margin: 0; font-size: .66rem; }

.workset-cell input {
  min-height: 2.7rem;
  min-width: 3.4rem;
  width: 100%;
  padding: .3rem .45rem;
  font-size: .95rem;
  border-radius: 10px;
}

/* Spin buttons eat width on desktop and clip the decimals ("20" for 20.5). */
input[type="number"] { -moz-appearance: textfield; appearance: textfield; }

input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.plate-count select {
  min-height: 2.6rem;
  margin-top: 0;
  width: auto;
  padding-right: 1.6rem;
}

.workset-cell noscript button {
  min-height: 2.7rem;
  width: auto;
  padding: .3rem .95rem;
  font-size: .88rem;
  border-radius: 10px;
}

.set-label { font-weight: 800; color: var(--muted); }

.add-set { margin: .6rem 0 0; }

.add-set .btn { min-height: 2.6rem; font-size: .92rem; }

.hand-heading {
  font-size: .78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--accent);
}

/* ---------- flow footer ---------- */

.flow-next { margin-top: 1.15rem; display: grid; gap: .65rem; }

/* ---------- climbs ---------- */

li.climb {
  display: block;
  padding: .85rem .15rem;
  border-bottom: 1px solid var(--border);
}

li.climb:last-child { border-bottom: none; }

li.climb .grade {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-right: .5rem;
}

li.climb .meta { color: var(--muted); font-size: .87rem; margin-top: .15rem; }

.pill {
  display: inline-block;
  padding: .12rem .62rem;
  font-size: .73rem;
  font-weight: 700;
  border-radius: 999px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  vertical-align: 2px;
}

.pill.boulder {
  color: var(--accent);
  background: var(--accent-soft);
  border-color: transparent;
}

/* ---------- dashboard ---------- */

.trend-chart {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 10px;
  margin: .3rem 0 .5rem;
}

.volume-list li {
  display: flex;
  justify-content: space-between;
  padding: .3rem 0;
  font-size: .92rem;
}

.pill.plateau-flag {
  color: var(--danger);
  background: color-mix(in srgb, var(--danger) 12%, transparent);
  border-color: transparent;
  margin-left: .4rem;
}

.pill.overtraining-flag {
  color: #a05a00;
  background: color-mix(in srgb, #e8a13c 18%, transparent);
  border-color: transparent;
  margin-left: .4rem;
}

@media (prefers-color-scheme: dark) {
  .pill.overtraining-flag { color: #f3b95f; }
}

.corr-headline {
  margin: 0 0 .5rem;
  font-size: 1.05rem;
}

.corr-headline .corr-r { font-size: 1.9rem; letter-spacing: -0.02em; }

.corr-points li {
  display: flex;
  justify-content: space-between;
  gap: .8rem;
  padding: .3rem 0;
  font-size: .92rem;
}

.corr-note { font-size: .78rem; margin: .7rem 0 0; }

/* ---------- misc ---------- */

.notice {
  padding: .95rem 1.05rem;
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent);
  border-radius: var(--radius);
  font-size: .95rem;
}

.notice a { color: var(--accent); font-weight: 750; }

code.invite-code {
  display: inline-block;
  padding: .55rem 1.1rem;
  font-size: 1.35rem;
  font-weight: 750;
  letter-spacing: .06em;
  background: var(--surface-2);
  border: 1.5px dashed color-mix(in srgb, var(--accent) 45%, var(--border));
  border-radius: 12px;
}

.muted { color: var(--muted); }