:root {
  color-scheme: light;
  --accent: #16a34a;
  --accent-active: #15803d;
  --on-accent: #ffffff;
  --bg: #f5f5f4;
  --card: #ffffff;
  --text: #1c1c1c;
  --muted: #8a8a8a;
  --border: #e5e5e5;
  --danger: #dc2626;
}

/* ---- themes (ids must match THEMES in src/routes/api.js and the <select> in index.html) ---- */

:root[data-theme="nord"] {
  color-scheme: dark;
  --accent: #88c0d0;
  --accent-active: #81a1c1;
  --on-accent: #2e3440;
  --bg: #2e3440;
  --card: #3b4252;
  --text: #eceff4;
  --muted: #aeb7c7;
  --border: #4c566a;
  --danger: #bf616a;
}

:root[data-theme="dracula"] {
  color-scheme: dark;
  --accent: #bd93f9;
  --accent-active: #a67cf0;
  --on-accent: #282a36;
  --bg: #282a36;
  --card: #343746;
  --text: #f8f8f2;
  --muted: #9ea8c7;
  --border: #44475a;
  --danger: #ff5555;
}

:root[data-theme="catppuccin-mocha"] {
  color-scheme: dark;
  --accent: #cba6f7;
  --accent-active: #b4befe;
  --on-accent: #1e1e2e;
  --bg: #181825;
  --card: #1e1e2e;
  --text: #cdd6f4;
  --muted: #a6adc8;
  --border: #313244;
  --danger: #f38ba8;
}

:root[data-theme="catppuccin-latte"] {
  color-scheme: light;
  --accent: #8839ef;
  --accent-active: #7287fd;
  --on-accent: #eff1f5;
  --bg: #e6e9ef;
  --card: #eff1f5;
  --text: #4c4f69;
  --muted: #6c6f85;
  --border: #ccd0da;
  --danger: #d20f39;
}

:root[data-theme="pastel"] {
  color-scheme: light;
  --accent: #c9a7eb;
  --accent-active: #b892e0;
  --on-accent: #3d3350;
  --bg: #fdf6f0;
  --card: #ffffff;
  --text: #4a4458;
  --muted: #8d859c;
  --border: #f0e4ec;
  --danger: #e5737f;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-tap-highlight-color: transparent;
}

input, button, select {
  font-family: inherit;
  font-size: 16px;
}

input {
  background: var(--card);
  color: var(--text);
}

input::placeholder {
  color: var(--muted);
}

/* ---- login page ---- */

.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.login-card {
  background: var(--card);
  border-radius: 16px;
  padding: 32px 24px;
  width: 100%;
  max-width: 360px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

.login-card h1 {
  margin: 0 0 24px;
  font-size: 22px;
  text-align: center;
}

.login-card label {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 6px;
}

.login-card input {
  width: 100%;
  padding: 12px 14px;
  margin-bottom: 16px;
  border: 1px solid var(--border);
  border-radius: 10px;
}

.login-card button {
  width: 100%;
  padding: 14px;
  border: none;
  border-radius: 10px;
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 600;
  cursor: pointer;
}

.login-card button:active {
  background: var(--accent-active);
}

.login-error {
  color: var(--danger);
  font-size: 14px;
  text-align: center;
  margin: -8px 0 16px;
}

/* ---- app shell ---- */

.app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  padding-top: calc(10px + env(safe-area-inset-top));
  background: var(--card);
  border-bottom: 1px solid var(--border);
}

.tabs {
  flex: 1;
  display: flex;
  gap: 6px;
  overflow-x: auto;
}

.tab, .chip {
  flex: 0 0 auto;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  white-space: nowrap;
}

.tab.active, .chip.active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--on-accent);
}

.sync-badge {
  flex: 0 0 auto;
  font-size: 12px;
  padding: 4px 8px;
  border-radius: 999px;
  background: var(--danger);
  color: #fff;
}

.view {
  padding: 12px 12px calc(32px + env(safe-area-inset-bottom));
  max-width: 640px;
  width: 100%;
  margin: 0 auto;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px;
  margin-bottom: 12px;
}

.card h2 {
  margin: 0 0 4px;
  font-size: 17px;
}

.card h3 {
  margin: 0 0 10px;
  font-size: 15px;
}

.muted {
  color: var(--muted);
  font-size: 13px;
}

.small {
  font-size: 12px;
}

.tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 2px 7px;
  border-radius: 6px;
  border: 1px solid var(--border);
  color: var(--muted);
  vertical-align: middle;
}

.tag.accent {
  border-color: var(--accent);
  color: var(--accent);
}

.chips {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  margin-bottom: 12px;
}

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

.exercise.main {
  border-left: 4px solid var(--accent);
}

.ex-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
}

.ex-name {
  font-weight: 600;
  font-size: 16px;
}

.ex-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  white-space: nowrap;
}

.ex-meta {
  margin: 4px 0 8px;
}

.set-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 0;
  border-top: 1px solid var(--border);
}

.set-no {
  width: 22px;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}

.set-row input {
  width: 0;
  flex: 1;
  min-width: 0;
  padding: 10px 8px;
  border: 1px solid var(--border);
  border-radius: 10px;
  text-align: center;
}

.set-row .x {
  color: var(--muted);
}

.set-row.logged input {
  border-color: var(--accent);
}

.set-target {
  width: 64px;
  font-size: 11px;
  color: var(--muted);
  text-align: right;
  line-height: 1.2;
}

.check {
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  background: transparent;
  color: var(--accent);
  font-size: 18px;
}

.set-row.logged .check {
  background: var(--accent);
  color: var(--on-accent);
}

.link-btn {
  border: none;
  background: none;
  color: var(--accent);
  padding: 8px 0 0;
  font-size: 14px;
}

.btn {
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg);
  color: var(--text);
  font-weight: 600;
}

.btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--on-accent);
}

.btn.primary:active {
  background: var(--accent-active);
}

.btn.danger {
  color: var(--danger);
}

.actions {
  display: flex;
  gap: 8px;
  margin-top: 4px;
}

.actions .btn {
  flex: 1;
}

/* ---- forms (settings) ---- */

.field-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  border-top: 1px solid var(--border);
}

.field-row:first-of-type {
  border-top: none;
}

.field-row label {
  flex: 1;
  min-width: 0;
}

.field-row input, .select {
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--card);
  color: var(--text);
}

.field-row input {
  width: 90px;
  text-align: right;
}

.select {
  width: 100%;
  margin-bottom: 12px;
}

.suggest-src {
  width: 70px;
  font-size: 11px;
  color: var(--muted);
}

/* ---- history ---- */

.chart {
  width: 100%;
  height: auto;
  display: block;
}

.chart .grid {
  stroke: var(--border);
  stroke-width: 1;
}

.chart .axis-label {
  fill: var(--muted);
  font-size: 10px;
}

.chart .line-top {
  fill: none;
  stroke: var(--accent);
  stroke-width: 2;
}

.chart .dot-top {
  fill: var(--accent);
}

.chart .line-e1rm {
  fill: none;
  stroke: var(--muted);
  stroke-width: 1.5;
  stroke-dasharray: 4 3;
}

.legend {
  display: flex;
  gap: 14px;
  margin-top: 6px;
}

.legend span::before {
  content: '';
  display: inline-block;
  width: 14px;
  height: 0;
  margin-right: 5px;
  vertical-align: middle;
  border-top: 2px solid var(--accent);
}

.legend span.e1rm::before {
  border-top: 2px dashed var(--muted);
}

.session-row {
  padding: 10px 0;
  border-top: 1px solid var(--border);
}

.session-row:first-child {
  border-top: none;
}

.session-sets {
  margin-top: 3px;
  font-variant-numeric: tabular-nums;
}

.empty-state {
  text-align: center;
  color: var(--muted);
  padding: 40px 16px;
  font-size: 14px;
}