:root {
  /* HOT palette */
  --hot-red: #D73F3F;
  --hot-blue-950: #111C31;
  --hot-gray-50: #F3F3F3;
  --hot-gray-100: #E1E0E1;
  --hot-gray-500: #828085;
  --hot-gray-700: #615F66;
  --hot-gray-900: #404248;

  /* Layout */
  --bg: #F9F8F6;
  --surface: rgba(255, 255, 255, 0.92);
  --surface-strong: rgba(255, 255, 255, 0.97);
  --ink: #111C31;
  --muted: #615F66;
  --line: rgba(17, 28, 49, 0.10);
  --line-strong: rgba(17, 28, 49, 0.18);
  --shadow: 0 12px 40px rgba(17, 28, 49, 0.07);
  --shadow-sm: 0 4px 12px rgba(17, 28, 49, 0.06);
  --radius-lg: 20px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --radius-xs: 5px;

  /* Status */
  --status-progress: #459BA0;
  --status-planned: #828085;
  --status-done: #366361;
  --status-risk: #E8750C;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: Archivo, -apple-system, Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
}

button, input, textarea, select { font: inherit; }
a { color: inherit; }

/* ── App layout ──────────────────────────────────────────── */

.app {
  padding: 1.25rem;
  max-width: 100%;
}

.app__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1rem;
  margin-bottom: 1rem;
}

.app__eyebrow {
  margin: 0 0 0.2rem;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--hot-red);
}

.app__title {
  margin: 0;
  font-size: clamp(1.5rem, 3.5vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--ink);
}

.app__subtitle {
  margin: 0.3rem 0 0;
  font-size: 0.82rem;
  color: var(--muted);
}

/* ── Legend ───────────────────────────────────────────────── */

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.75rem;
  align-items: center;
}

.legend__item {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.55rem;
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--muted);
  white-space: nowrap;
  cursor: pointer;
  transition: background 0.12s ease, color 0.12s ease, border-color 0.12s ease;
  font: inherit;
}

.legend__item:hover {
  color: var(--ink);
  background: rgba(46, 72, 115, 0.06);
}

.legend__item:focus-visible {
  outline: none;
  border-color: var(--ink);
}

.legend__item--active {
  color: var(--ink);
  background: rgba(46, 72, 115, 0.1);
  border-color: rgba(46, 72, 115, 0.24);
}

.legend__dot {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  flex-shrink: 0;
}

/* ── Timeline shell ──────────────────────────────────────── */

.timeline-shell {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow);
  overflow: hidden;
  min-height: calc(100vh - 8rem);
}

.timeline-scroll {
  overflow: auto;
  height: calc(100vh - 8rem);
}

.timeline-canvas {
  position: relative;
  min-height: 100%;
  padding: 0.75rem 0 1rem;
}

/* ── Axis ────────────────────────────────────────────────── */

.timeline-axis {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  align-items: stretch;
  min-height: 3.25rem;
  background: linear-gradient(180deg, var(--surface-strong), rgba(255, 255, 255, 0.8));
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.axis-month {
  flex: 0 0 auto;
  padding: 0.7rem 0.65rem 0.55rem;
  border-right: 1px solid var(--line);
}

.axis-month__label {
  display: block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.axis-month__year {
  display: block;
  margin-top: 0.1rem;
  font-size: 0.68rem;
  color: var(--muted);
}

/* ── Category section headers ────────────────────────────── */

.category-header {
  position: relative;
  height: 32px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--line);
}

.category-header__inner {
  position: sticky;
  left: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0 0.85rem;
  z-index: 1;
}

.category-header__dot {
  width: 8px;
  height: 8px;
  border-radius: 2px;
  flex-shrink: 0;
}

.category-header__name {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink);
}

.category-header__desc {
  font-size: 0.68rem;
  color: var(--muted);
  font-weight: 400;
}

/* ── Timeline rows ───────────────────────────────────────── */

.timeline-rows {
  position: relative;
}

.timeline-row {
  position: relative;
  border-bottom: 1px solid var(--line);
}

.timeline-row:last-child {
  border-bottom: 0;
}

/* ── Roadmap bars ────────────────────────────────────────── */

.roadmap-bar {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  border-radius: var(--radius-xs);
  cursor: pointer;
  overflow: hidden;
  user-select: none;
  transition: filter 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;

  /* Category colors set via inline custom properties */
  background: var(--bar-bg);
  border-left: 3px solid var(--bar-color);
  border-top: 1px solid var(--bar-border);
  border-right: 1px solid var(--bar-border);
  border-bottom: 1px solid var(--bar-border);
}

.roadmap-bar:hover {
  filter: brightness(0.97);
  box-shadow: var(--shadow-sm);
  transform: translateY(-50%) scale(1.006);
}

.roadmap-bar--active {
  box-shadow: 0 0 0 2px var(--bar-color), var(--shadow-sm);
  filter: brightness(0.95);
}

/* Status opacity modifiers */
.roadmap-bar--planned {
  opacity: 0.65;
}

.roadmap-bar--done {
  opacity: 0.4;
}

.roadmap-bar__content {
  position: absolute;
  top: 50%;
  left: 0.6rem;
  transform: translateY(-50%);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  min-width: max-content;
  max-width: calc(100% - 1.2rem);
  pointer-events: none;
}

.roadmap-bar__content[data-align="right"] {
  text-align: right;
}

.roadmap-bar__status {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

.roadmap-bar__status--in-progress { background: var(--status-progress); }
.roadmap-bar__status--planned { background: var(--status-planned); }
.roadmap-bar__status--done { background: var(--status-done); }
.roadmap-bar__status--at-risk { background: var(--status-risk); }

.roadmap-bar__label {
  flex: 0 1 auto;
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--ink);
}

.roadmap-bar--done .roadmap-bar__label {
  text-decoration: line-through;
}

.roadmap-bar__date {
  flex: 0 0 auto;
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}

/* ── Today line ──────────────────────────────────────────── */

.today-line {
  position: absolute;
  top: 0;
  bottom: 0;
  z-index: 6;
  pointer-events: none;
  border-left: 3px solid var(--hot-red);
  box-shadow:
    0 0 0 1px rgba(215, 63, 63, 0.12),
    0 0 18px rgba(215, 63, 63, 0.22);
  display: none;
}

.today-line__label {
  position: absolute;
  top: 0.5rem;
  left: 0.65rem;
  display: inline-block;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  background: rgba(215, 63, 63, 0.14);
  border: 1px solid rgba(215, 63, 63, 0.22);
  color: var(--hot-red);
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  box-shadow: 0 6px 20px rgba(215, 63, 63, 0.12);
}

/* ── Detail modal ────────────────────────────────────────── */

.detail-modal {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 1.25rem;
}

.detail-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(17, 28, 49, 0.32);
  backdrop-filter: blur(8px);
}

.modal-open {
  overflow: hidden;
}

.request-fab {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 12;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border: 0;
  border-radius: 999px;
  background: var(--hot-red);
  color: #fff;
  padding: 0.7rem 1.1rem 0.7rem 0.9rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  box-shadow: 0 6px 20px rgba(215, 63, 63, 0.28), 0 0 0 0 rgba(215, 63, 63, 0);
  cursor: pointer;
  transition: transform 0.15s ease, filter 0.15s ease, box-shadow 0.15s ease;
}

.request-fab:hover {
  filter: brightness(0.94);
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(215, 63, 63, 0.32), 0 0 0 0 rgba(215, 63, 63, 0);
}

.request-fab:active {
  transform: translateY(0);
}

.request-fab__icon {
  flex-shrink: 0;
}

.request-modal {
  position: fixed;
  inset: 0;
  z-index: 19;
  display: grid;
  place-items: center;
  padding: 1.25rem;
}

.request-modal[hidden] {
  display: none;
}

.request-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(17, 28, 49, 0.28);
  backdrop-filter: blur(6px);
}

.request-panel {
  position: relative;
  z-index: 1;
  width: min(34rem, calc(100vw - 2.5rem));
  max-height: min(90vh, 52rem);
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface-strong);
  box-shadow: 0 24px 64px rgba(17, 28, 49, 0.18);
  padding: 1.5rem 1.5rem 1.25rem;
  animation: panelIn 0.18s ease-out;
}

.request-panel__header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 1rem;
  margin-bottom: 1.1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.request-panel__eyebrow {
  margin: 0 0 0.3rem;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--hot-red);
}

.request-panel__title {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.request-panel__desc {
  margin: 0.35rem 0 0;
  font-size: 0.78rem;
  line-height: 1.45;
  color: var(--muted);
}

.request-panel__close,
.request-form__secondary,
.request-form__submit {
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.12s ease, color 0.12s ease, transform 0.12s ease, filter 0.12s ease;
}

.request-panel__close {
  width: 1.9rem;
  height: 1.9rem;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  font-size: 1.15rem;
  flex-shrink: 0;
}

.request-panel__close:hover {
  background: var(--line);
  color: var(--ink);
}

.request-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem 0.85rem;
}

.request-form__field {
  display: grid;
  gap: 0.3rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--ink);
}

.request-form__field--full {
  grid-column: 1 / -1;
}

.request-form__field input,
.request-form__field textarea,
.request-form__field select {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--ink);
  padding: 0.6rem 0.75rem;
  font-size: 0.82rem;
  transition: border-color 0.12s ease, box-shadow 0.12s ease;
}

.request-form__field input:focus,
.request-form__field textarea:focus,
.request-form__field select:focus {
  outline: none;
  border-color: var(--hot-red);
  box-shadow: 0 0 0 3px rgba(215, 63, 63, 0.1);
}

.request-form__field input::placeholder,
.request-form__field textarea::placeholder {
  color: var(--hot-gray-500);
  font-weight: 400;
}

.request-form__field select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M3 4.5L6 7.5L9 4.5' stroke='%23828085' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  padding-right: 2rem;
}

.request-form__field textarea {
  resize: vertical;
  min-height: 5rem;
}

.request-form__hint {
  grid-column: 1 / -1;
  margin: 0.15rem 0 0;
  font-size: 0.72rem;
  color: var(--muted);
  display: flex;
  align-items: center;
}

.request-form__actions {
  grid-column: 1 / -1;
  display: flex;
  justify-content: flex-end;
  gap: 0.6rem;
  margin-top: 0.15rem;
}

.request-form__secondary {
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--ink);
  padding: 0.6rem 1rem;
  font-size: 0.8rem;
  font-weight: 600;
}

.request-form__secondary:hover {
  background: var(--hot-gray-50);
}

.request-form__submit {
  border: 0;
  background: var(--hot-red);
  color: #fff;
  padding: 0.6rem 1.1rem;
  font-size: 0.8rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
}

.request-form__submit:hover {
  filter: brightness(0.92);
}

.request-form__submit:active {
  transform: scale(0.98);
}

.detail-panel {
  position: relative;
  z-index: 1;
  width: min(52rem, calc(100vw - 2.5rem));
  max-height: min(80vh, 46rem);
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface-strong);
  box-shadow: 0 24px 64px rgba(17, 28, 49, 0.18);
  padding: 1.1rem 1.25rem 1.25rem;
  animation: panelIn 0.18s ease-out;
}

@keyframes panelIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

.detail-panel__header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 1rem;
}

.detail-panel__title-row {
  flex: 1 1 auto;
  min-width: 0;
}

.detail-panel__category {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  margin: 0 0 0.35rem;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.detail-panel__category-dot {
  width: 8px;
  height: 8px;
  border-radius: 2px;
}

.detail-panel__title {
  margin: 0;
  font-size: 1.1rem;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.detail-panel__close {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  font-size: 1.1rem;
  line-height: 1;
  color: var(--muted);
  cursor: pointer;
  transition: background 0.12s ease, color 0.12s ease;
}

.detail-panel__close:hover {
  background: var(--line);
  color: var(--ink);
}

.detail-panel__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem 0.65rem;
  margin-top: 0.6rem;
  font-size: 0.82rem;
  color: var(--muted);
}

.detail-panel__summary {
  margin: 0.6rem 0 0;
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--muted);
  max-width: 46rem;
}

.detail-panel__issues {
  margin-top: 0.8rem;
}

.detail-panel__empty {
  margin: 0;
  padding: 0.4rem 0;
  font-size: 0.82rem;
  color: var(--muted);
}

.detail-panel__count {
  margin: 0 0 0.45rem;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ── Status pills ────────────────────────────────────────── */

.status-pill {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 0.22rem 0.55rem;
  font-size: 0.68rem;
  font-weight: 700;
  white-space: nowrap;
}

.status-pill--in-progress {
  background: rgba(69, 155, 160, 0.15);
  color: #2B514F;
}

.status-pill--planned {
  background: rgba(130, 128, 133, 0.12);
  color: #515057;
}

.status-pill--done {
  background: rgba(54, 99, 97, 0.15);
  color: #2B514F;
}

.status-pill--at-risk {
  background: rgba(232, 117, 12, 0.15);
  color: #CC6508;
}

/* ── Issue list ──────────────────────────────────────────── */

.issue-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.issue-item {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.5rem 0.7rem;
  border-bottom: 1px solid var(--line);
  font-size: 0.82rem;
  transition: background 0.1s ease;
}

.issue-item:last-child {
  border-bottom: 0;
}

.issue-item--linked {
  cursor: pointer;
}

.issue-item--linked:hover {
  background: rgba(17, 28, 49, 0.025);
}

.issue-item__priority {
  flex: 0 0 auto;
  font-size: 0.68rem;
  line-height: 1;
}

.issue-item__id {
  flex: 0 0 auto;
  font-size: 0.68rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--muted);
  min-width: 4rem;
}

.issue-item__title {
  flex: 1 1 auto;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-weight: 500;
}

.issue-item__state {
  flex: 0 0 auto;
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.18rem 0.4rem;
  border-radius: 999px;
  background: var(--hot-gray-50);
  white-space: nowrap;
}

.issue-state--done,
.issue-state--closed {
  background: rgba(54, 99, 97, 0.12);
}

.issue-state--in-progress,
.issue-state--started {
  background: rgba(69, 155, 160, 0.12);
}

.issue-state--cancelled,
.issue-state--canceled {
  background: var(--hot-gray-100);
  color: var(--muted);
}

.issue-item__assignee {
  flex: 0 0 auto;
  font-size: 0.76rem;
  color: var(--muted);
  max-width: 7.5rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.issue-item__link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.4rem;
  height: 1.4rem;
  border-radius: var(--radius-xs);
  font-size: 0.82rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--muted);
  transition: background 0.1s ease, color 0.1s ease;
}

.issue-item__link:hover {
  background: var(--ink);
  color: #fff;
}

/* ── Empty state ─────────────────────────────────────────── */

.empty-state {
  padding: 2rem;
  color: var(--muted);
}

/* ── Responsive ──────────────────────────────────────────── */

@media (max-width: 720px) {
  .app {
    padding: 0.75rem;
  }

  .app__header {
    flex-direction: column;
    align-items: flex-start;
  }

  .legend {
    margin-top: 0.25rem;
  }

  .timeline-shell,
  .timeline-scroll {
    min-height: calc(100vh - 9rem);
    height: calc(100vh - 9rem);
  }

  .detail-panel {
    padding: 0.85rem 0.9rem 1rem;
  }

  .request-fab {
    right: 0.75rem;
    bottom: 0.75rem;
    padding: 0.6rem 0.85rem 0.6rem 0.7rem;
    font-size: 0.72rem;
  }

  .request-modal {
    padding: 0.5rem;
  }

  .request-panel {
    width: calc(100vw - 1rem);
    max-height: calc(100vh - 1rem);
    padding: 1rem;
  }

  .request-form {
    grid-template-columns: 1fr;
  }

  .issue-item {
    font-size: 0.76rem;
    gap: 0.3rem;
  }

  .issue-item__assignee {
    display: none;
  }
}