:root {
  --font-sans: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --bg: #07111f;
  --bg-soft: rgba(15, 23, 42, 0.78);
  --panel: rgba(15, 23, 42, 0.86);
  --panel-strong: rgba(11, 18, 32, 0.94);
  --border: rgba(148, 163, 184, 0.18);
  --text: #e5eefc;
  --text-soft: #9fb1c9;
  --accent: #38bdf8;
  --accent-strong: #0ea5e9;
  --danger: #f87171;
  --success: #34d399;
  --warning: #fbbf24;
  --shadow: 0 28px 60px rgba(2, 6, 23, 0.35);
}

html[data-theme="light"] {
  --bg: #eff6ff;
  --bg-soft: rgba(255, 255, 255, 0.8);
  --panel: rgba(255, 255, 255, 0.88);
  --panel-strong: rgba(255, 255, 255, 0.95);
  --border: rgba(51, 65, 85, 0.12);
  --text: #0f172a;
  --text-soft: #475569;
  --accent: #0f766e;
  --accent-strong: #115e59;
  --danger: #dc2626;
  --success: #059669;
  --warning: #d97706;
  --shadow: 0 22px 60px rgba(15, 23, 42, 0.12);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: var(--font-sans);
  color: var(--text);
  background: linear-gradient(160deg, #09111f 0%, #0f172a 35%, #1d4ed8 130%);
}

html[data-theme="light"] body {
  background: linear-gradient(160deg, #e0f2fe 0%, #dbeafe 40%, #f8fafc 100%);
}

body {
  position: relative;
}

.app-background {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at top left, rgba(56, 189, 248, 0.22), transparent 24rem),
    radial-gradient(circle at 80% 20%, rgba(59, 130, 246, 0.18), transparent 30rem),
    radial-gradient(circle at 50% 100%, rgba(249, 115, 22, 0.12), transparent 28rem);
}

a {
  color: inherit;
  text-decoration: none;
}

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

button {
  cursor: pointer;
}

.shell,
.auth-shell {
  position: relative;
  z-index: 1;
  padding: 1.5rem;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  padding: 1rem 1.2rem;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 1.25rem;
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.brand-wrap,
.topbar-actions,
.topnav,
.user-chip,
.auth-meta {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-mark {
  width: 1rem;
  height: 1rem;
  border-radius: 0.35rem;
  background: linear-gradient(135deg, #38bdf8, #fb7185);
  box-shadow: 0 0 0 6px rgba(56, 189, 248, 0.16);
}

.storage-pill,
.role-pill,
.mini-badge,
.sync-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.12);
  border: 1px solid var(--border);
  color: var(--text-soft);
  font-size: 0.85rem;
}

.role-pill.admin {
  color: var(--warning);
}

.sync-pill.error {
  color: var(--danger);
  border-color: rgba(248, 113, 113, 0.3);
}

.theme-toggle,
.ghost-button,
.primary-button,
.danger-button {
  border: 1px solid transparent;
  border-radius: 0.95rem;
  padding: 0.8rem 1rem;
  transition: 180ms ease;
}

.theme-toggle,
.ghost-button {
  background: rgba(148, 163, 184, 0.08);
  color: var(--text);
  border-color: var(--border);
}

.primary-button {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: white;
  box-shadow: 0 16px 30px rgba(14, 165, 233, 0.25);
}

.danger-button {
  background: linear-gradient(135deg, #ef4444, #dc2626);
  color: white;
}

.danger-button.subtle {
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
  border-color: rgba(248, 113, 113, 0.22);
}

.small {
  padding: 0.55rem 0.75rem;
  font-size: 0.85rem;
}

.ghost-button:hover,
.theme-toggle:hover,
.primary-button:hover,
.danger-button:hover,
.board-card:hover,
.kanban-card:hover {
  transform: translateY(-1px);
}

.page-content {
  margin-top: 1.5rem;
}

.flash-stack {
  display: grid;
  gap: 0.75rem;
  margin-top: 1rem;
}

.flash {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  padding: 0.95rem 1rem;
  border-radius: 1rem;
  border: 1px solid var(--border);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.flash-success {
  border-color: rgba(52, 211, 153, 0.3);
}

.flash-error {
  border-color: rgba(248, 113, 113, 0.3);
}

.flash button {
  background: transparent;
  border: none;
  color: inherit;
  font-size: 1.1rem;
}

.panel,
.hero-card,
.kanban-list,
.new-list-card,
.modal-panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 1.4rem;
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.hero-card {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(320px, 0.9fr);
  gap: 1.25rem;
  padding: 1.4rem;
}

.board-hero {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  align-items: flex-start;
  padding: 1.4rem;
}

.hero-copy h1,
.board-hero h1,
.auth-hero h1 {
  margin: 0.35rem 0 0.75rem;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.05;
}

.hero-copy p,
.board-hero p,
.section-heading p,
.auth-hero p {
  margin: 0;
  color: var(--text-soft);
  line-height: 1.6;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
  margin-top: 1.4rem;
}

.hero-stats.compact {
  margin-top: 0.75rem;
}

.hero-stats article {
  padding: 1rem;
  border-radius: 1rem;
  background: rgba(148, 163, 184, 0.08);
  border: 1px solid var(--border);
}

.hero-stats strong {
  display: block;
  font-size: 1.5rem;
}

.hero-stats span {
  color: var(--text-soft);
}

.section-heading {
  margin-bottom: 1rem;
}

.section-heading h2,
.section-heading h3,
.admin-section h3,
.modal-head h2 {
  margin: 0 0 0.35rem;
}

.eyebrow {
  display: inline-flex;
  margin-bottom: 0.45rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.76rem;
  font-weight: 700;
}

.content-grid,
.board-layout,
.admin-grid,
.modal-grid,
.selector-grid {
  display: grid;
  gap: 1.25rem;
}

.content-grid {
  margin-top: 1.5rem;
}

.wide-panel {
  padding: 1.25rem;
}

.board-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
}

.board-card {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  padding: 1.1rem;
  border-radius: 1.2rem;
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.28), rgba(15, 23, 42, 0.55));
  border: 1px solid var(--border);
}

html[data-theme="light"] .board-card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(241, 245, 249, 0.92));
}

.board-card h3 {
  margin: 0;
}

.board-card p,
.table-muted {
  margin: 0;
  color: var(--text-soft);
}

.board-card-top,
.board-card-stats,
.member-row,
.label-row,
.assignee-row,
.table-user {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.board-card-updated {
  margin-left: auto;
  color: var(--text-soft);
  font-size: 0.82rem;
}

.stack-form,
.inline-form,
.compact-form {
  display: grid;
  gap: 0.9rem;
}

.inline-form {
  grid-auto-flow: column;
  align-items: center;
}

.stack-form label,
.compact-form label {
  display: grid;
  gap: 0.42rem;
  color: var(--text-soft);
}

input,
textarea,
select {
  width: 100%;
  padding: 0.85rem 0.95rem;
  border-radius: 0.95rem;
  border: 1px solid var(--border);
  background: rgba(15, 23, 42, 0.12);
  color: var(--text);
  outline: none;
}

html[data-theme="light"] input,
html[data-theme="light"] textarea,
html[data-theme="light"] select {
  background: rgba(255, 255, 255, 0.8);
}

input:focus,
textarea:focus,
select:focus {
  border-color: rgba(56, 189, 248, 0.5);
  box-shadow: 0 0 0 4px rgba(56, 189, 248, 0.12);
}

.empty-state {
  padding: 2rem;
  text-align: center;
  border: 1px dashed var(--border);
  border-radius: 1.2rem;
  color: var(--text-soft);
}

.board-layout {
  margin-top: 1.5rem;
  grid-template-columns: minmax(0, 1fr) 360px;
}

.board-columns {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  overflow-x: auto;
  padding-bottom: 1rem;
}

.board-columns::-webkit-scrollbar {
  height: 10px;
}

.board-columns::-webkit-scrollbar-thumb {
  background: rgba(148, 163, 184, 0.25);
  border-radius: 999px;
}

.kanban-list,
.new-list-card {
  min-width: 320px;
  padding: 1rem;
}

.kanban-list.dragging,
.kanban-card.dragging {
  opacity: 0.6;
}

.kanban-list-head,
.modal-head {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  justify-content: space-between;
}

.list-title-form {
  display: grid;
  gap: 0.6rem;
  flex: 1;
}

.drag-cue {
  padding-top: 0.75rem;
  color: var(--text-soft);
}

.cards {
  display: grid;
  gap: 0.8rem;
  min-height: 4rem;
  margin: 1rem 0;
}

.kanban-card {
  border-radius: 1rem;
  border: 1px solid rgba(148, 163, 184, 0.15);
  background: rgba(2, 6, 23, 0.3);
}

html[data-theme="light"] .kanban-card {
  background: rgba(255, 255, 255, 0.9);
}

.open-card {
  width: 100%;
  text-align: left;
  padding: 1rem;
  border: none;
  background: transparent;
  color: inherit;
}

.open-card h3 {
  margin: 0.5rem 0;
}

.open-card p {
  margin: 0;
  color: var(--text-soft);
  line-height: 1.5;
}

.label-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--label-color) 18%, transparent);
  border: 1px solid color-mix(in srgb, var(--label-color) 40%, transparent);
  color: var(--text);
  font-size: 0.82rem;
}

.member-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.08);
  border: 1px solid var(--border);
}

.member-pill small {
  color: var(--text-soft);
}

.avatar {
  display: inline-grid;
  place-items: center;
  width: 2.3rem;
  height: 2.3rem;
  border-radius: 999px;
  color: white;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.avatar.tiny {
  width: 1.8rem;
  height: 1.8rem;
  font-size: 0.72rem;
}

.user-chip {
  padding: 0.35rem 0.45rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(148, 163, 184, 0.08);
}

.user-chip small {
  display: block;
  color: var(--text-soft);
}

.sidebar-section {
  padding: 1.1rem;
}

.activity-list,
.comment-list {
  display: grid;
  gap: 0.8rem;
}

.activity-item,
.comment-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.75rem;
  padding: 0.85rem;
  border-radius: 1rem;
  background: rgba(148, 163, 184, 0.08);
  border: 1px solid var(--border);
}

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

.activity-item p,
.comment-item p {
  margin: 0.25rem 0 0;
  color: var(--text-soft);
}

.activity-item time,
.comment-item time {
  color: var(--text-soft);
  font-size: 0.82rem;
}

.comment-item strong {
  display: block;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 30;
  display: grid;
  place-items: center;
  padding: 1.25rem;
  background: rgba(2, 6, 23, 0.62);
}

.modal-backdrop.hidden {
  display: none;
}

.modal-panel {
  width: min(1120px, 100%);
  max-height: calc(100vh - 2rem);
  overflow: auto;
  padding: 1.2rem;
  background: var(--panel-strong);
}

.modal-grid,
.admin-grid {
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
}

.modal-side,
.checkbox-list {
  display: grid;
  gap: 1rem;
}

.modal-section {
  padding: 1rem;
}

.selector-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.checkbox-chip {
  display: flex;
  gap: 0.6rem;
  align-items: center;
}

.checkbox-chip input {
  width: auto;
}

.auth-page {
  display: grid;
  place-items: center;
  padding: 1.5rem;
}

.auth-shell {
  width: min(1120px, 100%);
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(360px, 0.85fr);
  gap: 1.25rem;
}

.auth-hero,
.auth-card {
  padding: 1.4rem;
}

.auth-hero,
.auth-panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 1.5rem;
  box-shadow: var(--shadow);
}

.auth-switch {
  margin: 1rem 0 0;
  color: var(--text-soft);
}

.auth-switch a {
  color: var(--accent);
}

.table-wrap {
  overflow: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th,
.data-table td {
  padding: 0.9rem 0.75rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.data-table th {
  color: var(--text-soft);
  font-weight: 600;
}

.empty-comments {
  padding: 1rem;
  border: 1px dashed var(--border);
  border-radius: 1rem;
  color: var(--text-soft);
  text-align: center;
}

.wrap {
  flex-wrap: wrap;
}

@media (max-width: 1080px) {
  .hero-card,
  .board-layout,
  .auth-shell,
  .modal-grid,
  .selector-grid,
  .admin-grid {
    grid-template-columns: 1fr;
  }

  .board-columns {
    padding-bottom: 0.5rem;
  }
}

@media (max-width: 720px) {
  .shell,
  .auth-shell,
  .auth-page {
    padding: 1rem;
  }

  .topbar,
  .board-hero {
    flex-direction: column;
    align-items: stretch;
  }

  .topbar-actions,
  .brand-wrap {
    flex-wrap: wrap;
  }

  .hero-stats {
    grid-template-columns: 1fr;
  }

  .kanban-list,
  .new-list-card {
    min-width: min(88vw, 320px);
  }
}