/* ============================================================
   Relay — Team inbox
   Flat design system: teal primary, orange accent, no shadows.
   ============================================================ */

@font-face {
  font-family: "Space Grotesk";
  src: url("assets/space-grotesk.ttf") format("truetype");
  font-weight: 300 700;
  font-display: swap;
}
@font-face {
  font-family: "DM Sans";
  src: url("assets/dm-sans.ttf") format("truetype");
  font-weight: 400 700;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("assets/ibm-plex-mono.ttf") format("truetype");
  font-weight: 400;
  font-display: swap;
}

:root {
  /* Brand + surfaces */
  --primary: #0d9488;
  --primary-strong: #0f766e;
  --primary-deep: #134e4a;
  --accent: #ea580c;
  --accent-strong: #c2410c;
  --bg: #f0fdfa;
  --surface: #ffffff;
  --surface-alt: #f6fbfa;
  --muted: #e8f1f4;
  --muted-fg: #475569;
  --border: #cdeae6;
  --border-strong: #99f6e4;
  --fg: #0f2e2b;
  --fg-soft: #38504d;
  --ring: #0d9488;

  /* Status tokens (paired with text + icon, never colour alone) */
  --todo-bg: #e0f2fe;
  --todo-fg: #075985;
  --progress-bg: #fef3c7;
  --progress-fg: #92400e;
  --blocked-bg: #fee2e2;
  --blocked-fg: #991b1b;
  --done-bg: #dcfce7;
  --done-fg: #166534;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;

  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 18px;

  --font-head: "Space Grotesk", "DM Sans", system-ui, sans-serif;
  --font-body: "DM Sans", system-ui, -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", monospace;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur-fast: 140ms;
  --dur: 200ms;

  --sidebar-w: 264px;
}

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

[hidden] {
  display: none !important;
}

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

body {
  margin: 0;
  min-height: 100dvh;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3 {
  font-family: var(--font-head);
  line-height: 1.2;
  margin: 0;
  letter-spacing: -0.01em;
}

p {
  margin: 0;
}

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

:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
  border-radius: 4px;
}

.svg-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.icon {
  width: 1.15em;
  height: 1.15em;
  flex: none;
}

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

.skip-link {
  position: absolute;
  left: var(--space-3);
  top: -60px;
  z-index: 100;
  background: var(--primary-strong);
  color: #fff;
  padding: 0.6rem 0.9rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 600;
  transition: top var(--dur-fast) var(--ease);
}
.skip-link:focus {
  top: var(--space-3);
}

/* ---------------- App shell ---------------- */

.app {
  display: grid;
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr);
  min-height: 100dvh;
}

.sidebar {
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: var(--space-5) var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  position: sticky;
  top: 0;
  height: 100dvh;
  overflow-y: auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 11px;
  background: var(--primary-strong);
  color: #fff;
  display: grid;
  place-items: center;
  flex: none;
}
.brand-mark svg {
  width: 22px;
  height: 22px;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}
.brand-name {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}
.brand-sub {
  font-size: 0.78rem;
  color: var(--muted-fg);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.nav-heading {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--muted-fg);
  font-weight: 600;
  margin-bottom: var(--space-3);
  padding-left: var(--space-2);
}

.status-nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.status-nav-btn {
  width: 100%;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  background: transparent;
  border: 0;
  border-radius: var(--radius-sm);
  padding: 0.55rem var(--space-2);
  cursor: pointer;
  color: var(--fg-soft);
  font-weight: 500;
  text-align: left;
  min-height: 42px;
  transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.status-nav-btn:hover {
  background: var(--muted);
  color: var(--fg);
}
.status-nav-btn[aria-pressed="true"] {
  background: #e0f5f2;
  color: var(--primary-deep);
  font-weight: 600;
}
.status-nav-btn .icon {
  color: var(--muted-fg);
}
.status-nav-btn[aria-pressed="true"] .icon {
  color: var(--primary-strong);
}
.status-nav-btn .nav-count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--muted-fg);
}

.sidebar-foot {
  margin-top: auto;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-4);
}
.foot-title {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: var(--space-1);
}
.foot-copy {
  font-size: 0.82rem;
  color: var(--muted-fg);
  line-height: 1.45;
}

/* ---------------- Main ---------------- */

.main {
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.main:focus {
  outline: none;
}

.topbar {
  padding: var(--space-6) var(--space-6) var(--space-4);
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-4);
}

.topbar h1 {
  font-size: 1.65rem;
  font-weight: 700;
}
.result-count {
  color: var(--muted-fg);
  font-size: 0.9rem;
  margin-top: 2px;
}

.controls {
  display: flex;
  gap: var(--space-3);
  align-items: flex-end;
  flex-wrap: wrap;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.field > label {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--fg-soft);
}
.field input,
.field select {
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 0.62rem 0.75rem;
  min-height: 46px;
  color: var(--fg);
  transition: border-color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}
.field input:hover,
.field select:hover {
  border-color: var(--primary);
}
.field input:focus,
.field select:focus {
  outline: 2px solid var(--ring);
  outline-offset: 1px;
  border-color: var(--primary);
}
.search-field {
  min-width: 290px;
  flex: 1 1 290px;
}
.search-input {
  position: relative;
  display: block;
}
.search-input .icon {
  position: absolute;
  left: 0.7rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted-fg);
  pointer-events: none;
}
.search-input input {
  width: 100%;
  padding-left: 2.35rem;
}
.filter-field {
  flex: 0 0 auto;
}
select {
  cursor: pointer;
}

/* ---------------- Task list ---------------- */

.list-region {
  padding: 0 var(--space-6) var(--space-7);
}

.task-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.task-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-4) var(--space-4) var(--space-4) var(--space-5);
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: var(--space-4);
  align-items: start;
  transition: border-color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}
.task-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: var(--status-fg, var(--border-strong));
}
.task-card:hover {
  border-color: var(--primary);
  background: var(--surface-alt);
}
.task-card:focus-within {
  border-color: var(--primary);
}

/* Whole-card activation via a stretched, semantically named button */
.task-open {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  background: transparent;
  cursor: pointer;
  border-radius: inherit;
  padding: 0;
}
.task-open:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 3px;
}

.card-main {
  grid-column: 2;
  min-width: 0;
}
.card-aside {
  grid-column: 3;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-2);
  z-index: 1;
  pointer-events: none;
}

.task-title {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 1.06rem;
  line-height: 1.3;
  color: var(--fg);
  overflow-wrap: anywhere;
}
.task-summary {
  color: var(--muted-fg);
  font-size: 0.92rem;
  line-height: 1.5;
  margin-top: 4px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2) var(--space-4);
  margin-top: var(--space-3);
  font-size: 0.82rem;
  color: var(--fg-soft);
}
.meta-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.meta-chip .icon {
  color: var(--muted-fg);
}
.due-date {
  font-family: var(--font-mono);
  font-size: 0.78rem;
}
.overdue {
  color: var(--blocked-fg);
  font-weight: 600;
}

.priority {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: 0.78rem;
  text-transform: capitalize;
}
.priority::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
}
.priority-high {
  color: var(--accent-strong);
}
.priority-medium {
  color: #a16207;
}
.priority-low {
  color: var(--muted-fg);
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0.2rem 0.6rem 0.2rem 0.5rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  white-space: nowrap;
  background: var(--status-bg);
  color: var(--status-fg);
}
.status-pill .icon {
  width: 0.95em;
  height: 0.95em;
}
.flip {
  transform: scaleX(-1);
}
.card-aside .status-pill,
.card-aside .priority {
  z-index: 1;
}

.tag-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: var(--space-3) 0 0;
  padding: 0;
}
.tag {
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  background: var(--muted);
  color: var(--fg-soft);
  border-radius: 999px;
  padding: 0.15rem 0.55rem;
}

/* Status colours keyed off data attributes */
[data-status="todo"] {
  --status-bg: var(--todo-bg);
  --status-fg: var(--todo-fg);
}
[data-status="in-progress"] {
  --status-bg: var(--progress-bg);
  --status-fg: var(--progress-fg);
}
[data-status="blocked"] {
  --status-bg: var(--blocked-bg);
  --status-fg: var(--blocked-fg);
}
[data-status="done"] {
  --status-bg: var(--done-bg);
  --status-fg: var(--done-fg);
}

/* ---------------- Empty state ---------------- */

.empty-state {
  background: var(--surface);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  padding: var(--space-7) var(--space-5);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
}
.empty-mark {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: #e0f5f2;
  color: var(--primary-strong);
  display: grid;
  place-items: center;
}
.empty-mark svg {
  width: 26px;
  height: 26px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.empty-state h2 {
  font-size: 1.2rem;
}
.empty-state p {
  color: var(--muted-fg);
  max-width: 42ch;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  padding: 0.6rem 1rem;
  min-height: 44px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease),
    border-color var(--dur-fast) var(--ease);
}
.btn-primary {
  background: var(--primary-strong);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-deep);
}
.btn-primary:active {
  background: #0b3d39;
}

.btn-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--fg-soft);
  display: inline-grid;
  place-items: center;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease),
    border-color var(--dur-fast) var(--ease);
}
.btn-icon:hover {
  background: var(--muted);
  color: var(--fg);
  border-color: var(--primary);
}
.btn-icon .icon {
  width: 20px;
  height: 20px;
}

/* ---------------- Detail dialog ---------------- */

.detail {
  padding: 0;
  border: 0;
  background: transparent;
  max-width: none;
  max-height: none;
}
.detail:not([open]) {
  display: none;
}

.detail-shell {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  width: min(620px, 94vw);
  max-height: 90dvh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  margin: auto;
}

.detail::backdrop {
  background: rgba(15, 46, 43, 0.45);
}

.detail-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--border);
  background: var(--surface-alt);
}
.detail-top-left {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 0;
}
.project-chip {
  background: #e0f5f2;
  color: var(--primary-deep);
  font-weight: 600;
  font-size: 0.8rem;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
}
.detail-id {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--muted-fg);
}

.detail-body-scroll {
  padding: var(--space-5);
  overflow-y: auto;
  overscroll-behavior: contain;
}

.detail-title {
  font-size: 1.55rem;
  font-weight: 700;
  overflow-wrap: anywhere;
}

.detail-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3) var(--space-5);
  margin: var(--space-5) 0;
  padding: var(--space-4);
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.meta-item dt {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted-fg);
  font-weight: 600;
  margin-bottom: 3px;
}
.meta-item dd {
  margin: 0;
  font-weight: 600;
  overflow-wrap: anywhere;
}

.status-editor {
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: var(--space-4);
  background: var(--surface);
}
.status-editor-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
  flex-wrap: wrap;
}
.status-editor-label label {
  font-weight: 600;
}
.status-editor select {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.75rem;
  min-height: 48px;
  font-weight: 500;
  cursor: pointer;
}
.status-editor select:focus {
  outline: 2px solid var(--ring);
  outline-offset: 1px;
}
.status-hint {
  margin-top: var(--space-2);
  font-size: 0.82rem;
  color: var(--muted-fg);
}

.detail-content {
  margin-top: var(--space-5);
}
.detail-content h3 {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted-fg);
  margin-bottom: var(--space-3);
}
.detail-copy {
  color: var(--fg-soft);
  line-height: 1.65;
  max-width: 68ch;
  white-space: pre-line;
  overflow-wrap: anywhere;
}

/* ---------------- Toast ---------------- */

.toast {
  position: fixed;
  left: 50%;
  bottom: max(var(--space-5), env(safe-area-inset-bottom));
  transform: translateX(-50%);
  background: var(--primary-deep);
  color: #fff;
  padding: 0.7rem 1.1rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 500;
  z-index: 60;
  max-width: min(92vw, 460px);
  text-align: center;
  animation: toast-in var(--dur) var(--ease);
}
.toast[hidden] {
  display: none;
}
@keyframes toast-in {
  from {
    opacity: 0;
    transform: translate(-50%, 10px);
  }
  to {
    opacity: 1;
    transform: translate(-50%, 0);
  }
}

/* ---------------- Responsive ---------------- */

@media (max-width: 900px) {
  .app {
    grid-template-columns: 1fr;
  }
  .sidebar {
    position: static;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--border);
    padding: var(--space-4);
    gap: var(--space-4);
  }
  .sidebar-foot {
    display: none;
  }
  .status-nav-list {
    flex-direction: row;
    overflow-x: auto;
    padding-bottom: 2px;
    gap: var(--space-1);
    -webkit-overflow-scrolling: touch;
  }
  .status-nav-list li {
    flex: none;
  }
  .status-nav-btn {
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 0.4rem 0.8rem;
    min-height: 40px;
  }
  .status-nav-btn .nav-count {
    margin-left: 2px;
  }
  .nav-heading {
    margin-bottom: var(--space-2);
  }
  .topbar {
    padding: var(--space-5) var(--space-4) var(--space-3);
  }
  .list-region {
    padding: 0 var(--space-4) var(--space-6);
  }
  .controls {
    width: 100%;
  }
  .search-field {
    min-width: 0;
    flex: 1 1 100%;
  }
  .filter-field {
    flex: 1 1 auto;
  }
  .filter-field select {
    width: 100%;
  }
}

@media (max-width: 560px) {
  .task-card {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-3);
    padding-left: var(--space-4);
  }
  .card-main {
    grid-column: 1;
  }
  .card-aside {
    grid-column: 1;
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    flex-wrap: wrap;
  }
  .task-summary {
    -webkit-line-clamp: 3;
  }

  .detail {
    width: 100%;
    height: 100dvh;
    max-height: none;
  }
  .detail-shell {
    width: 100%;
    height: 100dvh;
    max-height: none;
    border-radius: 0;
    border: 0;
  }
  .detail-meta {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }
  .detail-title {
    font-size: 1.35rem;
  }
}

/* ---------------- Reduced motion ---------------- */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------------- Dark mode ---------------- */

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #07201f;
    --surface: #0d2b29;
    --surface-alt: #103230;
    --muted: #173f3c;
    --muted-fg: #a7c4c0;
    --border: #1e4d49;
    --border-strong: #2a625d;
    --fg: #e6f4f2;
    --fg-soft: #c3dbd7;
    --primary: #2dd4bf;
    --primary-strong: #14b8a6;
    --primary-deep: #0f766e;
    --accent: #fb923c;
    --accent-strong: #fdba74;

    --todo-bg: #0c3450;
    --todo-fg: #bae6fd;
    --progress-bg: #422f0a;
    --progress-fg: #fde68a;
    --blocked-bg: #451717;
    --blocked-fg: #fecaca;
    --done-bg: #0f3b23;
    --done-fg: #bbf7d0;
  }
  .brand-mark {
    color: #04211f;
  }
  .btn-primary {
    color: #04211f;
  }
  .project-chip {
    background: #123f3c;
    color: #99f6e4;
  }
  .empty-mark {
    background: #123f3c;
    color: #5eead4;
  }
  .status-nav-btn[aria-pressed="true"] {
    background: #123f3c;
    color: #99f6e4;
  }
  .toast {
    background: #5eead4;
    color: #04211f;
  }
  .priority-high {
    color: var(--accent-strong);
  }
  .priority-medium {
    color: #fcd34d;
  }
}