:root {
  color-scheme: dark;
  --bg: #171817;
  --surface: #101112;
  --surface-2: #1f2225;
  --surface-3: #2d3238;
  --line: #373b40;
  --text: #f2f4f6;
  --muted: #aab2bc;
  --muted-2: #78828d;
  --blue: #4f7cff;
  --blue-deep: #075f8f;
  --danger: #ff6b6b;
  --ok: #5ed394;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.32);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body,
.app-shell {
  min-height: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

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

button {
  cursor: pointer;
}

[hidden] {
  display: none !important;
}

.auth-view {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    linear-gradient(120deg, rgba(79, 124, 255, 0.24), transparent 36%),
    linear-gradient(240deg, rgba(94, 211, 148, 0.18), transparent 34%),
    var(--bg);
}

.login-panel {
  width: min(420px, 100%);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(16, 17, 18, 0.92);
  box-shadow: var(--shadow);
  padding: 28px;
}

.brand-mark,
.app-logo {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--blue);
  color: white;
  font-weight: 800;
  box-shadow: inset 0 -2px 0 rgba(0, 0, 0, 0.16);
}

.login-panel h1,
.topbar h1,
.workspace h2 {
  margin: 0;
  letter-spacing: 0;
}

.login-panel h1 {
  margin-top: 12px;
  margin-bottom: 24px;
  font-size: 30px;
}

label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-weight: 650;
}

label + label {
  margin-top: 16px;
}

input,
select,
textarea {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #151719;
  color: var(--text);
  padding: 10px 12px;
  outline: none;
}

textarea {
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(79, 124, 255, 0.18);
}

input[type="color"] {
  cursor: pointer;
}

.primary-button,
.ghost-button,
.create-button,
.nav-pill,
.list-button,
.icon-button,
.avatar-button {
  border: 0;
  color: var(--text);
}

.primary-button {
  width: 100%;
  min-height: 44px;
  margin-top: 20px;
  border-radius: 8px;
  background: var(--blue);
  font-weight: 800;
}

.ghost-button {
  min-height: 42px;
  border-radius: 8px;
  background: var(--surface-2);
  color: var(--danger);
  padding: 0 16px;
  font-weight: 750;
}

.form-error {
  min-height: 20px;
  margin: 12px 0 0;
  color: #ffb4b4;
}

.tasks-view {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 264px minmax(0, 1fr);
  grid-template-rows: 80px minmax(0, 1fr);
}

.topbar {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 0 28px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  background: #161716;
}

.topbar-title,
.topbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.topbar h1 {
  font-size: 24px;
}

.icon-button,
.avatar-button {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: transparent;
  color: var(--text);
  font-size: 22px;
}

.icon-button:hover,
.avatar-button:hover {
  background: var(--surface-2);
}

.icon-button.small {
  width: 32px;
  height: 32px;
}

.avatar-button {
  background: #0a84c6;
  font-size: 14px;
  font-weight: 800;
}

.notify-button.is-on {
  background: rgba(94, 211, 148, 0.18);
  color: var(--ok);
}

.notify-button svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.menu-toggle {
  display: none;
}

.sidebar {
  padding: 28px 16px;
  overflow: auto;
}

.create-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  min-height: 56px;
  width: 128px;
  margin: 0 auto;
  border-radius: 8px;
  background: #3f454d;
  padding: 0 16px;
  font-weight: 800;
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.22);
}

.create-button span {
  display: block;
  font-size: 34px;
  line-height: 1;
  font-weight: 300;
  transform: translateY(-1px);
}

.filter-nav,
.list-nav {
  display: grid;
  gap: 4px;
}

.filter-nav {
  margin-top: 32px;
}

.nav-pill,
.list-button {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
  min-height: 36px;
  border-radius: 999px;
  background: transparent;
  color: #d7dce2;
  padding: 0 14px;
  text-align: left;
  font-weight: 750;
}

.nav-pill.is-active,
.list-button.is-active {
  background: var(--blue-deep);
  color: white;
}

.list-button {
  border-radius: 8px;
}

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

.color-dot {
  width: 14px;
  height: 14px;
  border-radius: 4px;
}

.sidebar-section {
  margin-top: 26px;
}

.section-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 0 8px 10px;
  color: var(--muted);
  font-weight: 850;
}

.workspace {
  min-width: 0;
  padding: 28px 28px 36px 8px;
  overflow: auto;
}

.workspace-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  margin: 0 0 18px;
  padding-right: 12px;
}

.eyebrow {
  margin: 0 0 5px;
  color: var(--muted);
  font-weight: 750;
}

.workspace h2 {
  font-size: 28px;
}

.stats-strip {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.stat-chip {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 12px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.03);
  font-weight: 750;
}

.board {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(292px, 322px);
  align-items: start;
  gap: 8px;
  min-height: 520px;
  overflow-x: auto;
  padding-bottom: 18px;
}

.list-card {
  min-height: 220px;
  border: 1px solid rgba(255, 255, 255, 0.03);
  border-radius: 8px;
  background: var(--surface);
  overflow: hidden;
}

.list-card.is-selected {
  border-color: rgba(255, 255, 255, 0.22);
}

.list-card-head {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 12px;
  padding: 18px 16px 8px;
}

.list-title {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.list-title h3 {
  margin: 0;
  font-size: 18px;
  overflow-wrap: anywhere;
}

.list-tools {
  display: flex;
  gap: 2px;
  flex-shrink: 0;
}

.task-list {
  display: grid;
  gap: 4px;
  padding: 4px 14px 14px;
}

.add-inline {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 42px;
  border: 0;
  background: transparent;
  color: #bcd3ff;
  font-weight: 800;
  text-align: left;
}

.task-row {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr) 32px;
  align-items: start;
  gap: 8px;
  min-height: 40px;
  padding: 7px 0;
}

.task-check {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  border: 2px solid #cfd6df;
  border-radius: 50%;
  background: transparent;
}

.task-check.is-done {
  border-color: var(--ok);
  background: var(--ok);
  color: #062d19;
}

.task-main {
  min-width: 0;
}

.task-title {
  margin: 0;
  color: #dde2e8;
  line-height: 1.28;
  overflow-wrap: anywhere;
}

.task-row.is-done .task-title {
  color: var(--muted-2);
  text-decoration: line-through;
}

.task-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 5px;
}

.meta-pill {
  display: inline-flex;
  align-items: center;
  min-height: 22px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  padding: 0 8px;
  color: #f0b6b6;
  font-size: 12px;
  font-weight: 750;
}

.repeat-pill {
  color: #c8d8ff;
}

.reminder-pill {
  color: #d9c7ff;
}

.meta-pill.is-today {
  color: #b6d0ff;
}

.star-button {
  width: 32px;
  height: 32px;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: #91addc;
  font-size: 22px;
}

.star-button.is-on {
  color: #bcd3ff;
}

.subtasks {
  grid-column: 2 / 4;
  display: grid;
  gap: 2px;
  margin: -2px 0 4px;
}

.subtask-add {
  grid-column: 2 / 4;
  justify-self: start;
  min-height: 28px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--muted-2);
  padding: 0;
  font-size: 13px;
  font-weight: 750;
}

.subtask-add:hover {
  color: #bcd3ff;
}

.subtask {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 7px;
  align-items: center;
  min-height: 30px;
  color: var(--muted);
  font-size: 14px;
}

.empty-state {
  display: grid;
  place-items: center;
  min-height: 280px;
  color: var(--muted);
  text-align: center;
  padding: 24px;
}

.empty-illustration {
  display: grid;
  place-items: center;
  width: 86px;
  height: 86px;
  margin: 0 auto 14px;
  border-radius: 50%;
  background: rgba(94, 211, 148, 0.16);
  color: var(--ok);
  font-size: 42px;
}

.completed-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  border: 0;
  background: transparent;
  color: #dce8ff;
  text-align: left;
  font-weight: 800;
}

.completed-area {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  margin-top: 8px;
  padding-top: 6px;
}

.modal {
  width: min(440px, calc(100vw - 28px));
  border: 0;
  border-radius: 8px;
  padding: 0;
  background: transparent;
  color: var(--text);
}

.modal::backdrop {
  background: rgba(0, 0, 0, 0.56);
}

.modal-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #111315;
  box-shadow: var(--shadow);
  padding: 18px;
}

.modal-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.modal-head h3 {
  margin: 0;
  font-size: 20px;
}

.check-row {
  display: flex;
  grid-template-columns: none;
  align-items: center;
  margin-top: 14px;
}

.check-row input {
  width: 18px;
  min-height: 18px;
}

.modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  align-items: center;
}

.modal-actions .primary-button {
  width: auto;
  min-width: 128px;
  margin: 0;
  padding: 0 16px;
}

.mobile-tabs {
  display: none;
}

@media (max-width: 1120px) {
  .tasks-view {
    grid-template-columns: 1fr;
    grid-template-rows: 64px minmax(0, 1fr);
    padding-bottom: 74px;
  }

  .topbar {
    padding: 0 14px;
  }

  .topbar h1 {
    font-size: 21px;
  }

  .menu-toggle {
    display: grid;
  }

  .sidebar {
    position: fixed;
    z-index: 20;
    inset: 64px auto 74px 0;
    width: min(320px, 88vw);
    background: #171817;
    border-right: 1px solid var(--line);
    transform: translateX(-104%);
    transition: transform 180ms ease;
  }

  .sidebar.is-open {
    transform: translateX(0);
  }

  .workspace {
    padding: 18px 12px 22px;
  }

  .workspace-head {
    align-items: start;
    flex-direction: column;
    gap: 10px;
    padding-right: 0;
  }

  .workspace h2 {
    font-size: 25px;
  }

  .stats-strip {
    justify-content: flex-start;
  }

  .board {
    grid-auto-flow: row;
    grid-auto-columns: unset;
    grid-template-columns: 1fr;
    min-height: 0;
    overflow: visible;
    gap: 12px;
    padding-bottom: 0;
  }

  .list-card {
    min-height: 0;
  }

  .list-card-head {
    padding: 16px 14px 6px;
  }

  .task-list {
    padding: 4px 12px 12px;
  }

  .mobile-tabs {
    position: fixed;
    z-index: 30;
    left: 0;
    right: 0;
    bottom: 0;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    min-height: 64px;
    padding: 5px max(6px, env(safe-area-inset-left)) max(5px, env(safe-area-inset-bottom)) max(6px, env(safe-area-inset-right));
    border-top: 1px solid var(--line);
    background: #111315;
  }

  .mobile-tabs button {
    display: grid;
    place-items: center;
    gap: 2px;
    border: 0;
    border-radius: 8px;
    background: transparent;
    color: var(--muted);
    font-size: 20px;
  }

  .mobile-tabs button span {
    font-size: 11px;
    font-weight: 800;
  }

  .mobile-tabs button.is-active {
    color: #dce8ff;
    background: rgba(79, 124, 255, 0.14);
  }
}

@media (max-width: 480px) {
  .login-panel {
    padding: 22px;
  }

  .topbar-actions .icon-button {
    display: none;
  }

  .topbar-actions .notify-button {
    display: grid;
  }

  .stat-chip {
    padding: 7px 10px;
    font-size: 13px;
  }

  .modal {
    width: calc(100vw - 18px);
  }
}