:root {
  color-scheme: light dark;
  --bg: #0b0d12;
  --bg-elev: #12151d;
  --bg-elev-2: #181c26;
  --border: #232836;
  --border-strong: #2c3342;
  --fg: #e6e9f2;
  --fg-muted: #8b93a7;
  --fg-dim: #5b6478;
  --accent: #7c6cff;
  --accent-soft: rgba(124, 108, 255, 0.15);
  --accent-strong: #9a8dff;
  --ok: #2ecc71;
  --ok-soft: rgba(46, 204, 113, 0.14);
  --warn: #f0a84d;
  --warn-soft: rgba(240, 168, 77, 0.16);
  --danger: #ff5a6b;
  --danger-soft: rgba(255, 90, 107, 0.14);
  --todo: #5b6478;
  --todo-soft: rgba(91, 100, 120, 0.2);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px -8px rgba(0, 0, 0, 0.55);
  --shadow-lg: 0 24px 60px -20px rgba(0, 0, 0, 0.6);
  --radius: 14px;
  --radius-sm: 8px;
  --ease: cubic-bezier(.2, .8, .2, 1);
  --font: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: "JetBrains Mono", "SF Mono", ui-monospace, Consolas, monospace;
}

[data-theme="light"] {
  --bg: #f6f7fb;
  --bg-elev: #ffffff;
  --bg-elev-2: #ffffff;
  --border: #e6e8ef;
  --border-strong: #d4d8e3;
  --fg: #141824;
  --fg-muted: #5b6478;
  --fg-dim: #8b93a7;
  --accent: #5543e4;
  --accent-soft: rgba(85, 67, 228, 0.1);
  --accent-strong: #3e2dc4;
  --ok: #0f9960;
  --ok-soft: rgba(15, 153, 96, 0.1);
  --warn: #b8741e;
  --warn-soft: rgba(184, 116, 30, 0.1);
  --danger: #d8344a;
  --danger-soft: rgba(216, 52, 74, 0.1);
  --todo: #8b93a7;
  --todo-soft: rgba(139, 147, 167, 0.16);
  --shadow-sm: 0 1px 2px rgba(20, 24, 36, 0.06);
  --shadow-md: 0 8px 24px -8px rgba(20, 24, 36, 0.15);
  --shadow-lg: 0 24px 60px -20px rgba(20, 24, 36, 0.2);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--fg);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-image:
    radial-gradient(1200px 500px at 80% -10%, var(--accent-soft), transparent 60%),
    radial-gradient(900px 450px at -10% 20%, rgba(46, 204, 113, 0.06), transparent 60%);
  background-attachment: fixed;
}

a {
  color: var(--accent-strong);
  text-decoration: none;
  transition: color 0.15s var(--ease);
}

a:hover { color: var(--fg); }

button, input, select, textarea { font-family: inherit; font-size: inherit; }

/* ---------- Layout ---------- */
.app-header {
  position: sticky;
  top: 0;
  z-index: 10;
  padding: 14px 24px;
  background: color-mix(in oklab, var(--bg) 85%, transparent);
  backdrop-filter: saturate(1.2) blur(12px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--fg);
}

.brand .logo {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent) 0%, #4fc3f7 100%);
  display: grid;
  place-items: center;
  color: white;
  font-weight: 700;
  font-size: 14px;
  box-shadow: 0 6px 16px -6px var(--accent);
}

.brand strong { font-size: 15px; }
.brand small {
  color: var(--fg-muted);
  font-weight: 500;
  font-size: 12px;
}

.nav {
  display: flex;
  gap: 4px;
  margin-left: auto;
}

.nav a {
  padding: 7px 12px;
  border-radius: 8px;
  color: var(--fg-muted);
  font-weight: 500;
  font-size: 13px;
  transition: all 0.15s var(--ease);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.nav a:hover { background: var(--bg-elev); color: var(--fg); }
.nav a.active { background: var(--accent-soft); color: var(--accent-strong); }

.nav-badge {
  background: var(--danger);
  color: white;
  font-size: 11px;
  font-weight: 600;
  padding: 1px 6px;
  border-radius: 999px;
  min-width: 16px;
  text-align: center;
  line-height: 1.4;
}

.theme-toggle {
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--fg-muted);
  width: 32px;
  height: 32px;
  border-radius: 8px;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: all 0.15s var(--ease);
  padding: 0;
}

.theme-toggle:hover { color: var(--fg); border-color: var(--border-strong); }

main {
  flex: 1;
  padding: 32px 24px 64px;
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
}

.page-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.page-header h1 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0;
}

.page-header .subtitle {
  color: var(--fg-muted);
  font-size: 14px;
  margin-top: 4px;
}

/* ---------- Sprint grid (index) ---------- */
.sprint-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}

.sprint-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: 180px;
  position: relative;
  overflow: hidden;
}

.sprint-card::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--accent);
  opacity: 0.4;
  transition: opacity 0.2s var(--ease);
}

.sprint-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
}

.sprint-card:hover::before { opacity: 1; }

.sprint-card a.card-link {
  position: absolute;
  inset: 0;
  z-index: 1;
  border-radius: inherit;
}

.sprint-card > *:not(.card-link) {
  position: relative;
  z-index: 2;
  pointer-events: none;
}

.sprint-card-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.sprint-number {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--fg-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.sprint-weeks {
  font-size: 12px;
  color: var(--fg-dim);
  font-family: var(--mono);
}

.sprint-title {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--fg);
}

.sprint-goal {
  color: var(--fg-muted);
  font-size: 13px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.progress {
  height: 6px;
  background: var(--border);
  border-radius: 999px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-strong));
  transition: width 0.4s var(--ease);
  border-radius: 999px;
}

.progress-bar.is-done { background: linear-gradient(90deg, var(--ok), #5be891); }

.sprint-stats {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
  font-size: 12px;
}

.stat-chip {
  padding: 3px 9px;
  border-radius: 999px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  border: 1px solid transparent;
}

.stat-chip::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.stat-chip.todo { color: var(--fg-muted); background: var(--todo-soft); }
.stat-chip.doing { color: var(--warn); background: var(--warn-soft); }
.stat-chip.done { color: var(--ok); background: var(--ok-soft); }
.stat-chip.overdue { color: var(--danger); background: var(--danger-soft); border-color: color-mix(in oklab, var(--danger) 40%, transparent); }

.empty {
  padding: 48px 24px;
  text-align: center;
  color: var(--fg-muted);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  background: var(--bg-elev);
}

.empty strong { color: var(--fg); display: block; margin-bottom: 4px; }

/* ---------- Sprint detail ---------- */
.sprint-detail-head {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 24px;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 28px;
}

.sprint-detail-head .meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.sprint-detail-head h1 {
  font-size: 30px;
  margin: 0;
  letter-spacing: -0.02em;
}

.sprint-detail-head .goal {
  color: var(--fg-muted);
  max-width: 680px;
  line-height: 1.55;
}

.sprint-detail-head .nav-sprints {
  display: flex;
  gap: 6px;
  align-items: center;
}

.nav-btn {
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--fg-muted);
  padding: 8px 12px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  transition: all 0.15s var(--ease);
}

.nav-btn:hover:not(:disabled) { color: var(--fg); border-color: var(--border-strong); }
.nav-btn:disabled, .nav-btn.disabled { opacity: 0.35; cursor: not-allowed; }
.nav-btn.primary { background: var(--accent); border-color: var(--accent); color: white; }
.nav-btn.primary:hover { background: var(--accent-strong); }

.summary-bar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  padding: 14px 18px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 20px;
  align-items: center;
}

.summary-bar .progress {
  flex: 1;
  min-width: 180px;
}

.tracks {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.track {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.track-head {
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elev-2);
}

.track-badge {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.track-badge.general { background: linear-gradient(135deg, #ff9a5a, #ff5a6b); }
.track-badge.designer { background: #ff77c6; }
.track-badge.backend { background: #7c6cff; }
.track-badge.mobile { background: #4fc3f7; }
.track-badge.frontend { background: #2ecc71; }
.track-badge.devops { background: #f0a84d; }
.track-badge.testing { background: linear-gradient(135deg, #00d4aa, #4facfe); }
.track-badge.other { background: var(--fg-dim); }

.track-name {
  font-weight: 600;
  letter-spacing: -0.01em;
  font-size: 14px;
}

.track-count {
  margin-left: auto;
  font-size: 12px;
  color: var(--fg-muted);
}

.tasks {
  list-style: none;
  margin: 0;
  padding: 0;
}

.task {
  display: grid;
  grid-template-columns: 28px 1fr auto auto auto;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  border-bottom: 1px solid var(--border);
  transition: background 0.15s var(--ease);
}

.task:last-child { border-bottom: none; }
.task:hover { background: var(--bg-elev-2); }
.task.is-done { opacity: 0.55; }
.task.is-done .task-title { text-decoration: line-through; color: var(--fg-muted); }
.task.is-overdue .task-title { color: var(--danger); }
.task.is-overdue .due-inline input { color: var(--danger); border-color: color-mix(in oklab, var(--danger) 40%, transparent); }

.status-dot {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid var(--todo);
  background: transparent;
  display: grid;
  place-items: center;
  font-size: 11px;
  color: var(--todo);
  transition: all 0.2s var(--ease);
}

.task.is-doing .status-dot {
  border-color: var(--warn);
  color: var(--warn);
  background: var(--warn-soft);
}

.task.is-done .status-dot {
  border-color: var(--ok);
  background: var(--ok);
  color: white;
}

.task-title {
  font-size: 13.5px;
  line-height: 1.45;
}

.task .assignee {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--fg-muted);
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  padding: 2px 7px;
  border-radius: 6px;
  white-space: nowrap;
}

.due-inline input[type="date"] {
  background: transparent;
  color: var(--fg-muted);
  border: 1px solid transparent;
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.15s var(--ease);
  font-family: var(--mono);
  color-scheme: dark;
}

[data-theme="light"] .due-inline input[type="date"] { color-scheme: light; }

.due-inline input[type="date"]:hover { border-color: var(--border); background: var(--bg); }
.due-inline input[type="date"]:empty { color: var(--fg-dim); }

.status-select {
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  color: var(--fg);
  padding: 5px 10px;
  border-radius: 6px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.15s var(--ease);
  font-weight: 500;
}

.status-select:hover { border-color: var(--border-strong); }
.status-select:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

.icon-btn {
  border: 1px solid transparent;
  background: transparent;
  color: var(--fg-dim);
  width: 28px;
  height: 28px;
  border-radius: 6px;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: all 0.15s var(--ease);
  padding: 0;
}

.icon-btn:hover { color: var(--danger); background: var(--danger-soft); }

/* ---------- Task title as button ---------- */
.task-open {
  background: none;
  border: none;
  padding: 0;
  margin: 0;
  color: var(--fg);
  cursor: pointer;
  text-align: left;
  font: inherit;
  line-height: inherit;
  font-size: 13.5px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  transition: color 0.12s var(--ease);
}

.task-open:hover { color: var(--accent-strong); }
.task-open:focus { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

.task-meta-indicators {
  display: inline-flex;
  gap: 6px;
  font-size: 11px;
  color: var(--fg-muted);
}

.dot-indicator {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 1px 6px;
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  line-height: 1.4;
}

/* ---------- Dialog (task modal) ---------- */
dialog.task-dialog {
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--bg-elev);
  color: var(--fg);
  max-width: 640px;
  width: calc(100vw - 32px);
  max-height: calc(100vh - 48px);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

dialog.task-dialog::backdrop {
  background: rgba(5, 8, 15, 0.55);
  backdrop-filter: blur(4px);
}

[data-theme="light"] dialog.task-dialog::backdrop { background: rgba(20, 24, 36, 0.35); }

dialog.task-dialog[open] {
  display: flex;
  flex-direction: column;
  animation: dialog-in 0.18s var(--ease);
}

@keyframes dialog-in {
  from { opacity: 0; transform: translateY(8px) scale(0.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.dialog-close-form {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 2;
}

.dialog-close {
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  color: var(--fg-muted);
  width: 32px;
  height: 32px;
  border-radius: 8px;
  cursor: pointer;
  display: grid;
  place-items: center;
  font-size: 18px;
  line-height: 1;
  transition: all 0.15s var(--ease);
}
.dialog-close:hover { color: var(--fg); border-color: var(--border-strong); }

.dialog-header {
  padding: 24px 28px 16px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, var(--bg-elev-2) 0%, var(--bg-elev) 100%);
}

.dialog-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--fg-muted);
  margin-bottom: 10px;
  font-weight: 500;
}
.dialog-breadcrumb .track-badge { width: 8px; height: 8px; }

.task-dialog h2 {
  margin: 0 0 14px;
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.35;
  padding-right: 44px;
}

.dialog-chips {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}

.dialog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  padding: 18px 28px;
  border-bottom: 1px solid var(--border);
  overflow-y: auto;
}

.dialog-grid .field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin: 0;
}

.dialog-grid .field label,
.dialog-description label,
.comments h3 {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fg-muted);
  margin: 0;
}

.dialog-grid .field input[type="date"],
.dialog-grid .field select {
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  color: var(--fg);
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 13px;
  font-family: var(--mono);
}

.dialog-ts {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--fg);
  padding: 8px 0;
}

.dialog-description {
  padding: 18px 28px;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 10px;
  overflow-y: auto;
}

.dialog-description textarea,
.comment-form textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--fg);
  padding: 10px 12px;
  border-radius: 10px;
  font-size: 13px;
  line-height: 1.5;
  resize: vertical;
  min-height: 64px;
  font-family: inherit;
  transition: border-color 0.15s var(--ease), box-shadow 0.15s var(--ease);
}

.dialog-description textarea:focus,
.comment-form textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.row-end { display: flex; justify-content: flex-end; }

.comments {
  padding: 18px 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow-y: auto;
  flex: 1;
  min-height: 120px;
}

.comment-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.comment {
  padding: 10px 14px;
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.comment-body {
  font-size: 13px;
  line-height: 1.55;
  white-space: pre-wrap;
  word-wrap: break-word;
}

.comment-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  color: var(--fg-muted);
  font-family: var(--mono);
}

.comment-meta .icon-btn {
  width: 22px;
  height: 22px;
  font-size: 16px;
  line-height: 1;
}

.comment-form {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 8px;
  border-top: 1px dashed var(--border);
}

.dialog-footer {
  padding: 14px 28px;
  border-top: 1px solid var(--border);
  background: var(--bg-elev-2);
}

.danger-btn {
  background: transparent;
  color: var(--danger);
  border: 1px solid color-mix(in oklab, var(--danger) 40%, transparent);
  padding: 7px 14px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s var(--ease);
}
.danger-btn:hover { background: var(--danger-soft); }

.muted { color: var(--fg-muted); font-weight: 400; }

@media (max-width: 560px) {
  dialog.task-dialog { border-radius: 14px; }
  .dialog-header, .dialog-grid, .dialog-description, .comments, .dialog-footer { padding-left: 18px; padding-right: 18px; }
}

/* ---------- Add task form ---------- */
.add-task-form {
  display: grid;
  grid-template-columns: 1fr 140px 110px 140px auto;
  gap: 8px;
  padding: 12px 16px;
  background: var(--bg-elev-2);
  border-top: 1px solid var(--border);
  align-items: center;
}

.add-task-form input[type="text"],
.add-task-form input[type="date"],
.add-task-form select {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--fg);
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 13px;
  transition: border-color 0.15s var(--ease);
  color-scheme: dark;
}

[data-theme="light"] .add-task-form input,
[data-theme="light"] .add-task-form select { color-scheme: light; }

.add-task-form input:focus,
.add-task-form select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.add-task-form input::placeholder { color: var(--fg-dim); }

.btn-primary {
  background: var(--accent);
  color: white;
  border: 1px solid var(--accent);
  padding: 8px 16px;
  border-radius: 8px;
  font-weight: 500;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.15s var(--ease);
}

.btn-primary:hover { background: var(--accent-strong); }

/* ---------- Overdue page ---------- */
.overdue-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.overdue-row {
  display: grid;
  grid-template-columns: auto 1fr auto auto auto;
  gap: 16px;
  padding: 14px 18px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-left: 3px solid var(--danger);
  border-radius: var(--radius-sm);
  align-items: center;
  transition: transform 0.15s var(--ease);
}

.overdue-row:hover { transform: translateX(2px); }

.overdue-days {
  font-family: var(--mono);
  font-weight: 600;
  color: var(--danger);
  font-size: 13px;
  white-space: nowrap;
}

.overdue-sprint {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--fg-muted);
  background: var(--bg-elev-2);
  padding: 2px 8px;
  border-radius: 6px;
}

/* ---------- Details section ---------- */
.details-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 14px;
  margin-bottom: 20px;
}

.details-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
}

.details-card h4 {
  margin: 0 0 8px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fg-muted);
  font-weight: 600;
}

.details-card .body {
  font-size: 13px;
  white-space: pre-line;
  color: var(--fg);
  line-height: 1.55;
}

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
  main { padding: 20px 16px 48px; }
  .app-header { padding: 12px 16px; gap: 12px; }
  .nav a { padding: 6px 8px; font-size: 12px; }
  .page-header h1 { font-size: 22px; }
  .sprint-detail-head h1 { font-size: 24px; }

  .task {
    grid-template-columns: 24px 1fr auto;
    grid-template-areas:
      "dot title delete"
      ". meta meta";
    gap: 8px 10px;
    padding: 12px 14px;
  }
  .task .status-dot { grid-area: dot; }
  .task .task-title { grid-area: title; }
  .task .icon-btn { grid-area: delete; }
  .task .task-meta { grid-area: meta; display: flex; gap: 8px; align-items: center; }

  .add-task-form { grid-template-columns: 1fr; }
  .overdue-row { grid-template-columns: auto 1fr; grid-auto-rows: auto; gap: 8px; }
}