/* Relay — Team Inbox
   System font stack, no external/runtime dependencies. */

:root {
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";

  /* Neutrals */
  --color-bg: #F6F7F9;
  --color-surface: #FFFFFF;
  --color-border: #E3E5EA;
  --color-border-strong: #C7CBD3;
  --color-text: #14181F;
  --color-text-secondary: #565E6C;
  --color-text-muted: #5D6474;

  /* Brand */
  --color-primary: #4338CA;
  --color-primary-hover: #362DA6;
  --color-primary-tint: #EEECFC;
  --color-focus-ring: #4338CA;

  /* Status */
  --status-todo-fg: #4B5261;
  --status-todo-bg: #EEF0F3;
  --status-inprogress-fg: #1D4ED8;
  --status-inprogress-bg: #EAF1FF;
  --status-blocked-fg: #B91C1C;
  --status-blocked-bg: #FDECEC;
  --status-done-fg: #15803D;
  --status-done-bg: #EBFAEF;

  /* Priority */
  --priority-high: #B91C1C;
  --priority-medium: #B45309;
  --priority-low: #565E6C;

  /* Spacing scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --shadow-sm: 0 1px 2px rgba(20, 24, 31, 0.06);
  --shadow-md: 0 8px 24px rgba(20, 24, 31, 0.12);
  --shadow-lg: 0 16px 48px rgba(20, 24, 31, 0.22);

  color-scheme: light;
}

* {
  box-sizing: border-box;
}

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

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

h1, h2, h3, dt, dd, p, ul, dl {
  margin: 0;
}

ul {
  list-style: none;
  padding: 0;
}

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

.visually-hidden {
  position: absolute;
  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;
  top: -48px;
  left: var(--space-3);
  z-index: 200;
  background: var(--color-primary);
  color: #fff;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 600;
  transition: top 0.15s ease;
}

.skip-link:focus {
  top: var(--space-3);
}

/* Focus visibility */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
.item-open:focus-visible {
  outline: 3px solid var(--color-focus-ring);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

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

.app-shell {
  max-width: 900px;
  margin: 0 auto;
  padding: var(--space-5) var(--space-4) var(--space-10);
}

.app-header {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  padding-bottom: var(--space-4);
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.brand-mark {
  display: inline-flex;
  line-height: 0;
}

.brand-name {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.brand-tagline {
  color: var(--color-text-muted);
  font-size: 14px;
}

/* ---------- Toolbar ---------- */

.toolbar {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  margin-bottom: var(--space-5);
  box-shadow: var(--shadow-sm);
}

.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.field label {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.input-with-icon {
  position: relative;
  display: flex;
  align-items: center;
}

.input-icon {
  position: absolute;
  left: var(--space-3);
  color: var(--color-text-muted);
  pointer-events: none;
}

#searchInput {
  width: 100%;
  height: 44px;
  padding: 0 var(--space-3) 0 var(--space-10);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  font-size: 16px;
}

#searchInput:focus-visible {
  outline: 3px solid var(--color-focus-ring);
  outline-offset: 1px;
}

#statusFilter {
  height: 44px;
  padding: 0 var(--space-8) 0 var(--space-3);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  background: var(--color-surface) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none'%3E%3Cpath d='M6 9L12 15L18 9' stroke='%23565E6C' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") no-repeat right var(--space-3) center;
  appearance: none;
  -webkit-appearance: none;
  font-size: 16px;
  max-width: 220px;
}

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

@media (min-width: 640px) {
  .toolbar {
    grid-template-columns: 1fr auto;
    align-items: end;
  }
  .results-count {
    grid-column: 1 / -1;
  }
}

/* ---------- Item list ---------- */

.item-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.item-list[hidden] {
  display: none;
}

.item-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.item-open {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: var(--space-4);
  cursor: pointer;
  border-radius: var(--radius-md);
  min-height: 44px;
}

.item-open:hover {
  background: #FAFAFC;
}

.item-card:has(.item-open:hover) {
  border-color: var(--color-border-strong);
}

.item-main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.item-top-row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.item-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  overflow-wrap: anywhere;
}

.item-summary {
  font-size: 14px;
  color: var(--color-text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.item-meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--color-text-muted);
}

.item-meta-entry {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.item-meta-entry svg {
  flex-shrink: 0;
}

.item-tags {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.chip {
  font-size: 12px;
  font-weight: 500;
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--color-primary-tint);
  color: var(--color-primary);
  border: 1px solid transparent;
}

.chevron {
  flex-shrink: 0;
  color: var(--color-text-muted);
  margin-top: 4px;
}

/* Status badge (shared: list + detail) */

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  flex-shrink: 0;
  white-space: nowrap;
}

.status-todo { color: var(--status-todo-fg); background: var(--status-todo-bg); }
.status-in-progress { color: var(--status-inprogress-fg); background: var(--status-inprogress-bg); }
.status-blocked { color: var(--status-blocked-fg); background: var(--status-blocked-bg); }
.status-done { color: var(--status-done-fg); background: var(--status-done-bg); }

.priority-label {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-weight: 600;
}
.priority-high { color: var(--priority-high); }
.priority-medium { color: var(--priority-medium); }
.priority-low { color: var(--priority-low); }

.overdue-flag {
  color: var(--status-blocked-fg);
  font-weight: 600;
}

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

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-2);
  padding: var(--space-10) var(--space-4);
  color: var(--color-text-secondary);
  background: var(--color-surface);
  border: 1px dashed var(--color-border-strong);
  border-radius: var(--radius-md);
}

.empty-state[hidden] {
  display: none;
}

.empty-state-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
}

.empty-state-hint {
  font-size: 14px;
  max-width: 40ch;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 44px;
  padding: 0 var(--space-5);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-secondary {
  background: var(--color-surface);
  border-color: var(--color-border-strong);
  color: var(--color-text);
}

.btn-secondary:hover {
  background: #F1F2F5;
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: transparent;
  border: 1px solid transparent;
  color: var(--color-text-secondary);
  cursor: pointer;
  flex-shrink: 0;
}

.btn-icon:hover {
  background: #F1F2F5;
  color: var(--color-text);
}

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

.detail-dialog {
  position: fixed;
  inset: 0 0 0 auto;
  top: 0;
  right: 0;
  margin: 0;
  height: 100dvh;
  width: min(480px, 100vw);
  max-width: 100vw;
  max-height: 100dvh;
  border: none;
  border-left: 1px solid var(--color-border);
  padding: 0;
  background: var(--color-surface);
  box-shadow: var(--shadow-lg);
  flex-direction: column;
}

.detail-dialog[open] {
  display: flex;
}

.detail-dialog::backdrop {
  background: rgba(20, 24, 31, 0.45);
}

@media (prefers-reduced-motion: no-preference) {
  .detail-dialog {
    animation: slideIn 0.22s ease-out;
  }
  .detail-dialog::backdrop {
    animation: fadeIn 0.22s ease-out;
  }
}

@keyframes slideIn {
  from { transform: translateX(24px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.detail-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-4);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.detail-scroll {
  overflow-y: auto;
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.detail-title {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.3;
  overflow-wrap: anywhere;
}

.detail-meta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  padding: var(--space-4);
  background: var(--color-bg);
  border-radius: var(--radius-md);
}

.detail-meta-item dt {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin-bottom: 2px;
}

.detail-meta-item dd {
  font-size: 14px;
  color: var(--color-text);
}

.detail-tags {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.detail-status-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.detail-status-field label {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-secondary);
}

#statusControl {
  height: 44px;
  padding: 0 var(--space-8) 0 var(--space-3);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  background: var(--color-surface) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none'%3E%3Cpath d='M6 9L12 15L18 9' stroke='%23565E6C' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") no-repeat right var(--space-3) center;
  appearance: none;
  -webkit-appearance: none;
  font-size: 16px;
  margin-top: 4px;
}

.status-feedback {
  min-height: 20px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  opacity: 0;
  transition: opacity 0.2s ease;
}

.status-feedback.visible {
  opacity: 1;
}

@media (prefers-reduced-motion: reduce) {
  .status-feedback {
    transition: none;
  }
}

.detail-body {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text);
  white-space: pre-line;
}

.detail-comments {
  font-size: 13px;
  color: var(--color-text-muted);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
}

@media (max-width: 420px) {
  .detail-dialog {
    width: 100vw;
  }
  .detail-meta-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3);
  }
}

@media (prefers-reduced-motion: reduce) {
  .detail-dialog,
  .detail-dialog::backdrop {
    animation: none;
  }
}

/* ---------- Desktop layout ---------- */

@media (min-width: 1024px) {
  .app-shell {
    max-width: 1040px;
    padding-top: var(--space-8);
  }
  .brand-name {
    font-size: 24px;
  }
}