:root {
  --ink: #0c1210;
  --panel: rgba(14, 28, 24, 0.78);
  --panel-strong: rgba(18, 36, 30, 0.92);
  --line: rgba(126, 214, 168, 0.22);
  --text: #e7f6ee;
  --muted: #9bb5a8;
  --accent: #5dffb1;
  --accent-deep: #1f9d68;
  --spec: #7ec8ff;
  --progress: #ffd36a;
  --done: #8dff9a;
  --danger: #ff7b7b;
  --radius: 18px;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
  --font-display: "Space Grotesk", sans-serif;
  --font-body: "IBM Plex Sans", sans-serif;
}

* {
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--ink);
  line-height: 1.45;
}

.atmosphere {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(1200px 700px at 12% -10%, rgba(93, 255, 177, 0.18), transparent 55%),
    radial-gradient(900px 600px at 90% 0%, rgba(126, 200, 255, 0.14), transparent 50%),
    linear-gradient(160deg, #07110e 0%, #0d1a16 42%, #101820 100%);
}

.atmosphere::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.28;
  background-image:
    linear-gradient(rgba(93, 255, 177, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(93, 255, 177, 0.05) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(circle at center, black 35%, transparent 85%);
}

.topbar,
main {
  width: min(1180px, calc(100% - 2rem));
  margin-inline: auto;
}

.topbar {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  padding: 2.25rem 0 1.5rem;
  animation: rise 520ms ease-out both;
}

.brand {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 0.95;
}

.tagline {
  margin: 0.45rem 0 0;
  color: var(--muted);
  font-size: 0.98rem;
}

main {
  display: grid;
  gap: 2rem;
  padding-bottom: 3.5rem;
}

.section-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}

.section-head p {
  margin: 0.35rem 0 1rem;
  color: var(--muted);
  max-width: 42rem;
}

.kanban-board {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
  animation: rise 640ms ease-out both;
}

.kanban-column {
  min-height: 280px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.kanban-column-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.9rem 1rem 0.75rem;
  border-bottom: 1px solid var(--line);
}

.kanban-column-head h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
}

.kanban-column[data-status="specification"] .kanban-column-head h3 {
  color: var(--spec);
}

.kanban-column[data-status="in_progress"] .kanban-column-head h3 {
  color: var(--progress);
}

.kanban-column[data-status="completed"] .kanban-column-head h3 {
  color: var(--done);
}

.kanban-count {
  min-width: 1.5rem;
  height: 1.5rem;
  padding: 0 0.4rem;
  border-radius: 999px;
  display: inline-grid;
  place-items: center;
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.08);
  color: var(--muted);
}

.kanban-column-body {
  display: grid;
  gap: 0.7rem;
  align-content: start;
  min-height: 220px;
  padding: 0.85rem;
  transition: background 160ms ease, outline-color 160ms ease;
}

.kanban-column-body.kanban-drop-active {
  background: rgba(93, 255, 177, 0.08);
  outline: 1px dashed rgba(93, 255, 177, 0.45);
  outline-offset: -6px;
}

.ticket-card,
.backlog-item {
  border: 1px solid rgba(126, 214, 168, 0.18);
  border-radius: 14px;
  background: var(--panel-strong);
  padding: 0.85rem 0.9rem;
  cursor: grab;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.ticket-card:hover,
.backlog-item:hover {
  border-color: rgba(93, 255, 177, 0.45);
  transform: translateY(-1px);
}

.ticket-card.dragging,
.backlog-item.dragging {
  opacity: 0.55;
  cursor: grabbing;
}

.ticket-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 0.98rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.ticket-desc {
  margin: 0.4rem 0 0;
  color: var(--muted);
  font-size: 0.88rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.ticket-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.55rem;
}

.tag-chip,
.tag-filter {
  display: inline-flex;
  align-items: center;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--accent);
  background: rgba(93, 255, 177, 0.08);
  border: 1px solid rgba(93, 255, 177, 0.22);
  border-radius: 8px;
  padding: 0.18rem 0.45rem;
}

.tag-filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  margin: 0 0 0.9rem;
  min-height: 1.5rem;
}

.tag-filters:empty {
  display: none;
}

.tag-filters-label {
  color: var(--muted);
  font-size: 0.85rem;
  margin-right: 0.15rem;
}

.tag-filter {
  font: inherit;
  cursor: pointer;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.03);
  border-color: var(--line);
  transition: border-color 140ms ease, color 140ms ease, background 140ms ease;
}

.tag-filter:hover,
.tag-filter.is-active {
  color: var(--accent);
  border-color: rgba(93, 255, 177, 0.45);
  background: rgba(93, 255, 177, 0.1);
}

.tag-clear {
  margin-left: 0.15rem;
}

.ticket-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  margin: 0.55rem 0 0;
  color: var(--muted);
  font-size: 0.78rem;
}

.meta-sep {
  opacity: 0.5;
}

.kanban-empty,
.backlog-empty {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  padding: 0.5rem 0.15rem;
}

.backlog-list {
  display: grid;
  gap: 0.75rem;
  animation: rise 760ms ease-out both;
}

.backlog-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.85rem;
  align-items: start;
}

.backlog-actions {
  display: flex;
  gap: 0.45rem;
  flex-wrap: wrap;
  justify-content: end;
}

.btn-primary,
.btn-text,
.btn-ghost {
  font: inherit;
  border: 0;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  color: #04140d;
  font-weight: 600;
  padding: 0.7rem 1.05rem;
  border-radius: 999px;
  transition: transform 150ms ease, filter 150ms ease;
}

.btn-primary:hover {
  transform: translateY(-1px);
  filter: brightness(1.05);
}

.btn-text,
.btn-ghost {
  background: transparent;
  color: var(--text);
  padding: 0.45rem 0.7rem;
  border-radius: 999px;
  border: 1px solid transparent;
}

.btn-ghost {
  border-color: var(--line);
  color: var(--accent);
}

.btn-ghost:hover,
.btn-text:hover {
  border-color: rgba(93, 255, 177, 0.4);
}

.ticket-dialog {
  width: min(460px, calc(100% - 2rem));
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 0;
  background: #10201a;
  color: var(--text);
  box-shadow: var(--shadow);
}

.ticket-dialog::backdrop,
.ticket-detail-dialog::backdrop {
  background: rgba(4, 10, 8, 0.72);
}

.ticket-detail-dialog {
  width: min(720px, calc(100% - 2rem));
  max-height: min(85vh, 900px);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 0;
  background: #10201a;
  color: var(--text);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.ticket-detail-shell {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  max-height: min(85vh, 900px);
}

.ticket-detail-header,
.ticket-detail-footer {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem 1.25rem;
  border-bottom: 1px solid var(--line);
}

.ticket-detail-footer {
  align-items: center;
  justify-content: end;
  border-bottom: 0;
  border-top: 1px solid var(--line);
}

.ticket-detail-status {
  margin: 0 0 0.35rem;
  color: var(--muted);
  font-size: 0.8rem;
  text-transform: capitalize;
}

.ticket-detail-header h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.35rem;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.ticket-detail-body {
  overflow-y: auto;
  padding: 1.1rem 1.25rem 1.4rem;
  overscroll-behavior: contain;
}

.ticket-detail-description {
  margin: 0;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  line-height: 1.55;
  color: var(--text);
}

.ticket-detail-description.is-empty {
  color: var(--muted);
  font-style: italic;
}

.ticket-detail-section {
  margin-top: 1.15rem;
}

.ticket-detail-section h4 {
  margin: 0 0 0.45rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

.ticket-detail-fields {
  display: grid;
  gap: 0.55rem;
  margin: 0;
}

.ticket-detail-fields div {
  display: grid;
  grid-template-columns: 7.5rem 1fr;
  gap: 0.75rem;
  font-size: 0.92rem;
}

.ticket-detail-fields dt {
  margin: 0;
  color: var(--muted);
}

.ticket-detail-fields dd {
  margin: 0;
  color: var(--text);
}

.ticket-dialog form {
  display: grid;
  gap: 0.9rem;
  padding: 1.25rem;
}

.ticket-dialog h3 {
  margin: 0;
  font-family: var(--font-display);
}

.ticket-dialog label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.ticket-dialog input,
.ticket-dialog textarea {
  width: 100%;
  font: inherit;
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.7rem 0.8rem;
}

.ticket-dialog input:focus,
.ticket-dialog textarea:focus {
  outline: 2px solid rgba(93, 255, 177, 0.35);
  outline-offset: 1px;
}

.dialog-actions {
  display: flex;
  justify-content: end;
  gap: 0.5rem;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 900px) {
  .kanban-board {
    grid-template-columns: 1fr;
  }

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

  .backlog-item {
    grid-template-columns: 1fr;
  }

  .backlog-actions {
    justify-content: start;
  }
}