/* WorkBuddy demo page. Frontend design 5 and 8: light and dark from the system setting, a focus
   ring that is always shown, 44px touch targets, rem sizes, one column below 720px. Nothing here
   is coloured by how a turn ended: replies, plans and downloads look the same whatever happened. */

:root {
  --bg: #f4f5f8;
  --surface: #ffffff;
  --surface-2: #eceef4;
  --text: #1a1e29;
  --muted: #566075;
  --line: #d3d8e3;
  --accent: #2a4bc4;
  --accent-text: #ffffff;
  --accent-soft: #e4eafc;
  --focus: #1a3fd0;
  --shadow: 0 1px 2px rgb(20 30 60 / 8%), 0 4px 14px rgb(20 30 60 / 6%);
  --radius: 0.75rem;
  --gap: 1rem;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f121a;
    --surface: #181d28;
    --surface-2: #222938;
    --text: #e9ecf3;
    --muted: #a3acbf;
    --line: #333b4e;
    --accent: #93acff;
    --accent-text: #0c1020;
    --accent-soft: #232c4a;
    --focus: #b3c4ff;
    --shadow: 0 1px 2px rgb(0 0 0 / 40%);
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 1rem/1.55 var(--font);
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.25;
}

h1 {
  font-size: 1.375rem;
  letter-spacing: -0.01em;
}

h2 {
  font-size: 1.0625rem;
}

h3 {
  font-size: 0.9375rem;
}

p {
  margin: 0;
}

a {
  color: var(--accent);
  text-underline-offset: 0.18em;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: 0.25rem;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* -- Layout -------------------------------------------------------------------------------- */

.app {
  display: flex;
  flex-direction: column;
  gap: var(--gap);
  min-height: 100vh;
  min-height: 100dvh;
  max-width: 76rem;
  margin: 0 auto;
  padding: var(--gap) var(--gap) 0;
}

.app-header {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.demo-notice,
.hint {
  color: var(--muted);
  font-size: 0.875rem;
}

.workspace {
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  gap: var(--gap);
  min-height: 0;
}

.panel {
  padding: var(--gap);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.conversation {
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  gap: var(--gap);
  min-width: 0;
}

@media (min-width: 720px) {
  .app {
    padding-bottom: var(--gap);
  }

  .workspace {
    display: grid;
    grid-template-columns: minmax(15rem, 20rem) minmax(0, 1fr);
    align-items: start;
    gap: 1.25rem;
  }

  .files {
    position: sticky;
    top: var(--gap);
  }
}

/* -- Gate ---------------------------------------------------------------------------------- */

.gate {
  display: flex;
  flex-direction: column;
  gap: var(--gap);
  max-width: 26rem;
  margin: 12vh auto 0;
  padding: 1.5rem var(--gap);
}

.gate-form {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  padding: 1.25rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

/* -- Controls ------------------------------------------------------------------------------ */

label,
legend {
  font-size: 0.875rem;
  font-weight: 600;
}

input[type="password"],
input[type="file"],
textarea {
  width: 100%;
  min-height: 2.75rem;
  padding: 0.6rem 0.75rem;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  font: inherit;
  font-size: 1rem;
}

input[type="file"] {
  padding: 0.5rem;
  font-size: 0.875rem;
}

input[type="file"]::file-selector-button {
  margin-right: 0.6rem;
  padding: 0.35rem 0.8rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 0.375rem;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

textarea {
  display: block;
  min-height: 5.5rem;
  resize: vertical;
}

input:disabled,
textarea:disabled,
fieldset:disabled {
  opacity: 0.55;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.75rem;
  min-height: 2.75rem;
  padding: 0.5rem 1.1rem;
  color: var(--text);
  background: var(--surface);
  border: 1.5px solid var(--accent);
  border-radius: 0.5rem;
  font: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
}

.btn:hover:not(:disabled) {
  background: var(--accent-soft);
}

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

.btn-primary:hover:not(:disabled) {
  background: var(--accent);
  filter: brightness(1.08);
}

.btn:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.error-slot {
  color: var(--text);
  font-size: 0.875rem;
}

.error-slot:empty {
  display: none;
}

.error-slot:not(:empty) {
  padding: 0.5rem 0.75rem;
  border-left: 4px solid var(--accent);
  background: var(--surface-2);
  border-radius: 0.25rem;
}

/* -- Files --------------------------------------------------------------------------------- */

.files {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.upload {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.file-list {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 0.9375rem;
}

.file-list li {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.5rem;
  align-items: baseline;
  overflow-wrap: anywhere;
}

.file-name {
  font-weight: 600;
}

.file-size,
.empty {
  color: var(--muted);
  font-size: 0.8125rem;
}

.tag {
  padding: 0.05rem 0.45rem;
  color: var(--text);
  background: var(--accent-soft);
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}

/* -- Conversation -------------------------------------------------------------------------- */

.transcript {
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  gap: 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.transcript:has(.turn) > .empty {
  display: none;
}

.turn {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.bubble {
  max-width: min(100%, 44rem);
  padding: 0.7rem 0.95rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.bubble-user {
  align-self: flex-end;
  background: var(--accent-soft);
  border-color: transparent;
}

.bubble-buddy {
  align-self: flex-start;
  box-shadow: var(--shadow);
}

.who {
  display: block;
  margin-bottom: 0.15rem;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.text {
  margin: 0;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}

.downloads {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin: 0.75rem 0 0;
  padding: 0;
  list-style: none;
}

.download {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  padding: 0.4rem 0.9rem;
  color: var(--text);
  background: var(--surface-2);
  border: 1.5px solid var(--accent);
  border-radius: 0.5rem;
  font-weight: 600;
  text-decoration: none;
  overflow-wrap: anywhere;
}

.download:hover {
  background: var(--accent-soft);
}

.progress {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--muted);
}

.spinner {
  width: 1rem;
  height: 1rem;
  border: 2px solid var(--line);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .spinner {
    animation: none;
    border-top-color: var(--line);
  }
}

/* -- Plan card ----------------------------------------------------------------------------- */

.plan {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 44rem;
  padding: 1rem 1.1rem;
  background: var(--surface);
  border: 2px solid var(--accent);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.plan h3 {
  font-size: 1.0625rem;
}

.plan-steps {
  margin: 0;
  padding-left: 1.4rem;
}

.plan-steps li {
  overflow-wrap: anywhere;
}

.plan-steps li + li {
  margin-top: 0.25rem;
}

.plan-note,
.plan-warning {
  overflow-wrap: anywhere;
  padding: 0.5rem 0.75rem;
  background: var(--surface-2);
  border-radius: 0.375rem;
  font-size: 0.9375rem;
}

.plan-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.plan-actions .btn {
  flex: 1 1 8rem;
}

.sending {
  display: none;
  color: var(--muted);
  font-size: 0.875rem;
}

.plan-actions.htmx-request + .sending {
  display: block;
}

.time-left {
  color: var(--muted);
  font-size: 0.875rem;
}

/* -- Composer ------------------------------------------------------------------------------ */

.composer {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0.9rem var(--gap);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.mode {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem 1rem;
  margin: 0;
  padding: 0;
  border: 0;
}

.mode legend {
  float: left;
  margin-right: 0.75rem;
  padding: 0;
}

.mode .hint {
  flex-basis: 100%;
}

.choice {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  min-height: 2.75rem;
  font-weight: 500;
}

.choice input {
  width: 1.15rem;
  height: 1.15rem;
  accent-color: var(--accent);
}

.composer-actions {
  display: flex;
  justify-content: flex-end;
}

/* -- Notices (the page's own voice, never Buddy's) -------------------------------------------- */

.notices:empty {
  display: none;
}

.notice {
  padding: 0.65rem 0.9rem;
  background: var(--surface);
  border: 2px dashed var(--muted);
  border-radius: 0.5rem;
  font-size: 0.9375rem;
}

.notice + .notice {
  margin-top: 0.5rem;
}

/* -- Narrow screens: one column, the composer pinned to the bottom -------------------------------- */

@media (max-width: 719px) {
  /* The conversation comes first; the Files panel follows it. */
  .conversation {
    order: 1;
  }

  .files {
    order: 2;
  }

  /* Keep a focused element clear of the pinned composer. */
  html {
    scroll-padding-bottom: 13rem;
  }

  .composer {
    position: sticky;
    bottom: 0;
    z-index: 2;
    margin: 0 calc(var(--gap) * -1);
    padding-bottom: calc(0.9rem + env(safe-area-inset-bottom, 0px));
    border-radius: var(--radius) var(--radius) 0 0;
    border-bottom: 0;
  }

  /* While the composer is closed (a turn is unfinished) it doesn't pin, so it can't cover the
     plan card or the progress row. */
  .composer:has(textarea:disabled) {
    position: static;
    margin: 0;
    border-radius: var(--radius);
    border-bottom: 1px solid var(--line);
  }

  .files .hint,
  .composer .hint {
    font-size: 0.8125rem;
  }

  /* The key hint is for a physical keyboard, and the composer needs the room. */
  #message-hint {
    display: none;
  }

  textarea {
    min-height: 3.75rem;
  }

  .btn,
  .download {
    width: 100%;
  }

  .composer-actions {
    justify-content: stretch;
  }

  .bubble {
    max-width: 100%;
  }
}