/* TapRep: dark theme only, Material 3 as a guide (DAI-11). */

@font-face {
  font-family: "Roboto";
  /* Android has Roboto built in, so only iOS downloads the file */
  src: local("Roboto"), url("/static/fonts/roboto-latin-wght.woff2") format("woff2");
  font-weight: 400 700;
  font-display: swap;
}

:root {
  color-scheme: dark;

  /* The palette */
  --carbon-black: #211d1a;
  --silver: #c0b7b0;
  --dusty-taupe: #a4826d;
  --mauve-bark: #644336;
  --ochre: #b08d4c;
  --steel: #8597a3;
  --terracotta: #b04a35; /* the one colour outside the palette */

  /* M3 colour roles (contrast ratios against their background) */
  --md-sys-color-surface: var(--carbon-black);
  --md-sys-color-on-surface: var(--silver); /* 8.48:1 */
  --md-sys-color-surface-container: #352822; /* 30% Mauve Bark over Carbon Black; Silver 7.2:1 */
  --md-sys-color-primary: var(--dusty-taupe);
  --md-sys-color-on-primary: var(--carbon-black); /* 4.77:1 */
  --md-sys-color-secondary-container: var(--mauve-bark);
  --md-sys-color-on-secondary-container: var(--silver); /* 4.44:1, large text only */
  --md-sys-color-outline: var(--dusty-taupe); /* 4.05:1 on the panel */
  --field-focus: var(--ochre); /* 4.57:1 on the panel; only 1.13:1 against the outline, so focus also shows by its thicker border */
  --md-sys-color-tertiary: var(--steel);
  --md-sys-color-tertiary-container: #302f2f; /* 15% Steel over Carbon Black; Silver 6.76:1, Steel icon 4.42:1 */
  --set-chip: #423028; /* 50% Mauve Bark over Carbon Black, a step up from the card */
  --placeholder: rgb(192 183 176 / 0.6); /* dimmed Silver, so an empty field doesn't look filled in */
  --md-sys-color-error: var(--terracotta);
  --md-sys-color-on-error: #fff; /* 5.42:1 */

  /* M3 shape */
  --md-sys-shape-corner-extra-small: 4px;
  --md-sys-shape-corner-medium: 12px;
  --md-sys-shape-corner-large: 16px;
  --md-sys-shape-corner-full: 999px;

  --page-gutter: 16px;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--md-sys-color-surface);
}

body {
  margin: 0;
  background: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
  font: 400 1rem/1.5 "Roboto", "Helvetica Neue", Arial, sans-serif;
}

/* On a phone the app is the whole screen and the page itself scrolls,
   with the log panel stuck to the bottom of the screen. */
.app {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

.scroll {
  flex: 1; /* pushes the log panel to the bottom when the list is short */
  display: flex;
  flex-direction: column;
}

/* On a tablet or desktop the app sits centred in a phone-sized frame.
   Only the header and workout scroll, so the scrollbar stops at the log
   panel, and it's inset from the frame so it clears the rounded corners. */
@media (min-width: 600px) {
  body {
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
  }

  .app {
    width: 412px;
    height: min(924px, calc(100dvh - 48px));
    min-height: 0;
    overflow: hidden;
    border: 1px solid var(--mauve-bark);
    border-radius: 24px;
  }

  .scroll {
    min-height: 0;
    overflow-y: auto;
    margin: 12px 4px 0 0;
    scrollbar-gutter: stable; /* no layout jump when the list starts to scroll */
    scrollbar-width: thin;
    scrollbar-color: var(--mauve-bark) transparent;
  }

  /* Make up for the inset and the scrollbar so content lines up with the panel */
  .scroll .top-bar {
    padding-top: 4px;
  }

  .scroll .top-bar,
  .scroll .workout {
    padding-right: 6px;
  }
}

h1,
h2,
p {
  margin: 0;
}

.icon {
  width: 1.25em;
  height: 1.25em;
  flex: none;
  fill: currentColor;
}

/* --- Top bar ------------------------------------------------------------ */

.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  min-height: 80px; /* room for Finish, so the bar keeps its height once it appears */
  padding: 16px var(--page-gutter);
}

.top-bar h1 {
  font-size: 1.375rem; /* M3 title-large */
  font-weight: 500;
  line-height: 1.25;
}

.workout-time {
  font-size: 0.9375rem;
  line-height: 1.25; /* title and time fit in the bar's height, so it doesn't grow */
}

/* --- The workout ---------------------------------------------------------- */

.workout {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 0 var(--page-gutter) 16px;
}

/* Just a wrapper that responses swap by id; the cards lay out as if it weren't there */
.workout-list {
  display: contents;
}

/* A different colour from the exercise cards, so it divides the title from them */
.note-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--md-sys-shape-corner-medium);
  background: var(--md-sys-color-tertiary-container);
  font-size: 0.9375rem;
}

.note-card .icon {
  width: 1.5em;
  height: 1.5em;
  color: var(--md-sys-color-tertiary);
}

.empty {
  margin-top: 32px;
  text-align: center;
  font-size: 1.125rem;
}

.card {
  position: relative;
  background: var(--md-sys-color-surface-container);
  border-radius: var(--md-sys-shape-corner-medium);
  padding: 16px;
}

/* The exercise name is a button, stretched over the whole card so the card
   is one big tap target. It keeps the heading for screen readers. */
.card-pick {
  padding: 0;
  border: none;
  background: none;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.card-pick::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--md-sys-shape-corner-medium);
}

.card:has(.card-pick:active) {
  filter: brightness(1.15);
}

.card:has(.card-pick:focus-visible) {
  outline: 2px solid var(--md-sys-color-primary);
  outline-offset: 2px;
}

.card h2 {
  font-size: 1.25rem;
  font-weight: 500;
  margin-bottom: 4px;
}

/* Each set is a chip, so sets stay distinct when the row wraps. Flat (no
   border or shadow), so they don't look like separate buttons: a tap
   anywhere on the card picks the exercise. */
.sets {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 4px 0 0;
  padding: 0;
  list-style: none;
  font-size: 1.125rem;
}

.sets .set {
  padding: 2px 10px;
  border-radius: 8px;
  background: var(--set-chip); /* Silver on it 6.32:1 */
}

.set {
  white-space: nowrap; /* never split "5 × 100 kg" across lines */
}

/* --- Log panel, pinned to the bottom (thumb zone) -------------------------- */

.log-panel {
  position: sticky;
  bottom: 0;
  z-index: 1; /* the error pill floats over the cards */
  display: grid;
  grid-template-columns: minmax(0, 1fr); /* long text truncates instead of widening the panel */
  gap: 12px;
  padding: 8px var(--page-gutter);
  padding-bottom: calc(16px + env(safe-area-inset-bottom));
  background: var(--md-sys-color-surface-container);
  /* A line along the top edge only, the desktop frame's colour, so cards
     scrolling under the panel don't blend into it */
  border-top: 1px solid var(--mauve-bark);
  border-radius: var(--md-sys-shape-corner-large) var(--md-sys-shape-corner-large) 0 0;
}

/* Always one button tall, even when empty, so the panel never changes height */
.last-logged {
  min-height: 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

/* A long name is shortened, never the set, which is what Undo would remove */
.last-logged-text {
  display: flex;
  gap: 0.3em;
  min-width: 0;
  white-space: nowrap;
}

.last-logged-label {
  opacity: 0.8;
}

.last-logged-name {
  overflow: hidden;
  text-overflow: ellipsis;
}

.fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.field {
  display: grid;
  gap: 4px;
  font-size: 0.875rem;
}

.field-wide {
  grid-column: 1 / -1;
}

.field input {
  width: 100%;
  min-height: 56px;
  padding: 0 12px;
  border: 1px solid var(--md-sys-color-outline);
  border-radius: var(--md-sys-shape-corner-extra-small);
  background: transparent;
  color: var(--md-sys-color-on-surface);
  font: inherit;
  font-size: 1.25rem; /* 16px or more stops iOS zooming in on focus */
}

.field input::placeholder {
  color: var(--placeholder);
}

.field.invalid input {
  border: 2px solid var(--md-sys-color-error);
  padding: 0 11px;
}

.field input:focus {
  outline: none;
  border: 2px solid var(--field-focus);
  padding: 0 11px;
}

/* Clear Exercise (DAI-29): a red circle with a white ×, just right of the
   field and centred on it. The button is a full 48px tap target; the circle is
   smaller. */
.clearable {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
}

.clear-field {
  width: 48px;
  height: 56px; /* the field's height, so the circle lines up with its middle */
  display: grid;
  place-items: center;
  padding: 0;
  border: none;
  background: none;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.clear-field svg {
  width: 30px;
  height: 30px;
}

.clear-field circle {
  fill: var(--md-sys-color-error);
}

.clear-field path {
  stroke: var(--md-sys-color-on-error); /* 5.42:1 */
  stroke-width: 2.5;
  stroke-linecap: round;
}

.clear-field:active {
  filter: brightness(1.15);
}

.clear-field:focus-visible {
  outline: 2px solid var(--md-sys-color-primary);
  outline-offset: -2px;
  border-radius: var(--md-sys-shape-corner-full);
}

/* Nothing to clear. Hidden but still taking its space, so the field doesn't
   change width as the first letter is typed. */
.clearable:has(input:placeholder-shown) .clear-field {
  visibility: hidden;
}

/* --- Buttons -------------------------------------------------------------- */

/* Labels are 19px bold, which counts as large text for contrast (WCAG),
   so Silver on Mauve Bark (tonal) passes. Bigger than M3's 14px, for the gym. */
.btn {
  min-height: 48px;
  padding: 0 24px;
  border: none;
  border-radius: var(--md-sys-shape-corner-full);
  font: inherit;
  font-size: 1.1875rem;
  font-weight: 700;
  /* Centre the capitals, not the font's line box, which includes descender
     space and makes labels like "Undo Last Set" sit high. Browsers without
     support keep the old look. */
  text-box: trim-both cap alphabetic;
  cursor: pointer;
}

.btn:focus-visible {
  outline: 2px solid var(--md-sys-color-primary);
  outline-offset: 2px;
}

.btn:active {
  filter: brightness(1.15);
}

.btn:disabled {
  opacity: 0.38;
  cursor: default;
  filter: none;
}

.btn-filled {
  background: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
}

.btn-tonal {
  background: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
}

.btn-outlined {
  background: transparent;
  border: 1px solid var(--md-sys-color-outline);
  color: var(--md-sys-color-on-surface);
}

.btn-text {
  background: transparent;
  color: var(--md-sys-color-primary);
  padding: 0 12px;
}

.btn-small {
  flex: none;
  padding: 0 20px;
}

.btn-block {
  width: 100%;
  min-height: 64px;
}

/* --- Error pill: stays until the problem is gone ------------------------- */

/* Floats 20px above the panel, over the cards, so it never changes the
   panel's size or moves anything. A long message grows upwards. */
.error-pill {
  position: absolute;
  bottom: calc(100% + 1px + 20px); /* 100% stops inside the panel's top border */
  left: var(--page-gutter);
  right: var(--page-gutter);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: var(--md-sys-shape-corner-large);
  background: var(--md-sys-color-error);
  color: var(--md-sys-color-on-error);
  font-weight: 500;
}

/* --- Dialogs: confirm (Finish, New Workout) and Share ---------------------- */

/* M3's basic dialog, in the panel's colour. No padding on the dialog itself:
   app.js treats a click on it as a tap on the backdrop. */
.dialog {
  width: min(calc(100vw - 2 * var(--page-gutter)), 360px);
  padding: 0;
  border: none;
  border-radius: 28px;
  background: var(--md-sys-color-surface-container);
  color: var(--md-sys-color-on-surface);
}

.dialog::backdrop {
  background: rgb(0 0 0 / 0.6);
}

.dialog form {
  display: grid;
  gap: 16px;
  padding: 24px;
}

.dialog h2 {
  font-size: 1.5rem; /* M3 headline-small */
  font-weight: 400;
  line-height: 1.33;
}

/* Right-aligned like M3. When a long confirm label doesn't fit beside Cancel
   (360px phones), they stack as M3 does: confirm on top, Cancel under it. */
.dialog-actions {
  display: flex;
  flex-wrap: wrap-reverse;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 8px;
}

/* Share Workout's ways to send, without a share sheet (DAI-9): one per row,
   full width. The links are styled as buttons. */
.share-options {
  display: grid;
  gap: 8px;
}

.share-options .btn {
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

/* SMS does nothing on a desktop, so hide it where the main pointer is a mouse */
@media (hover: hover) and (pointer: fine) {
  .share-options .phone-only {
    display: none;
  }
}

/* --- Finished: the panel only holds Share ---------------------------------- */

.log-panel-finished {
  padding-top: 16px;
}