:root {
  --bg: #0a0a0a;
  --bg-tint: #101010;
  --surface: #161616;
  --surface-strong: #1c1c1c;
  --ink: #ededed;
  --ink-muted: #a0a0a0;
  --ink-subtle: #6e6e6e;
  --rule: rgba(255, 255, 255, 0.1);
  --rule-strong: rgba(255, 255, 255, 0.22);
  --accent: #ff6a33;
  --accent-ink: #0a0a0a;
  --secondary: #74b08a;
  --btn-bg: #ededed;
  --btn-ink: #0a0a0a;
  --danger: #d96b6b;
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
  --ease: cubic-bezier(0.25, 1, 0.5, 1);
  --radius: 8px;
  --header-h: 56px;
  --tab-h: 64px;
  --font-sans: "Geist", "Helvetica Neue", Helvetica, -apple-system, BlinkMacSystemFont,
    "Segoe UI", Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  color-scheme: dark;
}

html[data-theme="light"] {
  --bg: #ffffff;
  --bg-tint: #fafafa;
  --surface: #f5f5f5;
  --surface-strong: #ffffff;
  --ink: #0a0a0a;
  --ink-muted: #5a5a5a;
  --ink-subtle: #8a8a8a;
  --rule: rgba(0, 0, 0, 0.08);
  --rule-strong: rgba(0, 0, 0, 0.16);
  --accent: #fa5500;
  --accent-ink: #ffffff;
  --secondary: #3f7d5a;
  --btn-bg: #0a0a0a;
  --btn-ink: #ffffff;
  --danger: #b54545;
  --shadow: 0 14px 32px rgba(0, 0, 0, 0.08);
  color-scheme: light;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(255, 106, 51, 0.08), transparent 55%),
    radial-gradient(900px 420px at 100% 0%, rgba(116, 176, 138, 0.06), transparent 50%),
    linear-gradient(180deg, var(--bg-tint), var(--bg) 40%, var(--bg));
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
}

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

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

button {
  cursor: pointer;
  border: none;
  background: none;
}

img {
  max-width: 100%;
  display: block;
}

#app {
  min-height: 100dvh;
}

.label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-subtle);
}

h1,
.h1 {
  margin: 0;
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

h2 {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 500;
  letter-spacing: -0.02em;
}

.muted {
  color: var(--ink-muted);
}

.subtle {
  color: var(--ink-subtle);
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.spacer {
  flex: 1;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 40px;
  padding: 0.55rem 1rem;
  border-radius: var(--radius);
  background: var(--btn-bg);
  color: var(--btn-ink);
  font-weight: 500;
  transition: transform 180ms var(--ease), opacity 180ms var(--ease),
    background 180ms var(--ease);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--rule-strong);
}

.btn-accent {
  background: var(--accent);
  color: var(--accent-ink);
}

.btn-danger {
  background: transparent;
  color: var(--danger);
  border: 1px solid color-mix(in srgb, var(--danger) 45%, transparent);
}

.btn-sm {
  min-height: 34px;
  padding: 0.35rem 0.75rem;
  font-size: 0.9rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  min-height: 42px;
  padding: 0.65rem 0.8rem;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--surface);
  outline: none;
  transition: border-color 180ms var(--ease), background 180ms var(--ease);
}

.field textarea {
  min-height: 110px;
  resize: vertical;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--rule-strong);
  background: var(--surface-strong);
}

.field-hint {
  font-size: 0.85rem;
  color: var(--ink-subtle);
}

.checkbox {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  min-height: 42px;
}

.checkbox input {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
}

.app-shell {
  display: flex;
  flex-direction: column;
  height: 100dvh;
  overflow: hidden;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: var(--header-h);
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--rule);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.brand-mark {
  width: 14px;
  height: 14px;
  color: var(--accent);
}

.desktop-nav {
  display: none;
  align-items: center;
  gap: 0.25rem;
}

.desktop-nav a {
  padding: 0.45rem 0.7rem;
  border-radius: var(--radius);
  color: var(--ink-muted);
  font-size: 0.95rem;
  transition: color 180ms var(--ease), background 180ms var(--ease);
}

.desktop-nav a:hover,
.desktop-nav a.active {
  color: var(--ink);
  background: var(--surface);
}

.user-chip {
  display: none;
  align-items: center;
  gap: 0.65rem;
  margin-left: auto;
}

.mobile-actions {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin-left: auto;
}

.user-chip .email {
  font-size: 0.85rem;
  color: var(--ink-muted);
  max-width: 180px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.icon-btn {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  border: 1px solid var(--rule);
  color: var(--ink-muted);
  transition: color 180ms var(--ease), border-color 180ms var(--ease),
    background 180ms var(--ease);
}

.icon-btn:hover {
  color: var(--ink);
  border-color: var(--rule-strong);
  background: var(--surface);
}

.main {
  width: min(1200px, 100%);
  margin: 0 auto;
  padding: 1.25rem 1rem calc(var(--tab-h) + env(safe-area-inset-bottom) + 1rem);
  flex: 1;
  overflow-y: auto;
  overscroll-behavior-y: contain;
  animation: fade-up 240ms var(--ease);
}

.page-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 0.85rem 1rem;
  margin-bottom: 1.35rem;
}

.page-head p {
  margin: 0.35rem 0 0;
  color: var(--ink-muted);
  max-width: 36rem;
}

.bottom-nav {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 30;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.15rem;
  min-height: var(--tab-h);
  padding: 0.4rem 0.5rem calc(0.4rem + env(safe-area-inset-bottom));
  border-top: 1px solid var(--rule);
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(16px);
}

.bottom-nav a {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.2rem;
  min-height: 48px;
  border-radius: var(--radius);
  color: var(--ink-subtle);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: color 180ms var(--ease), background 180ms var(--ease);
}

.bottom-nav a.active,
.bottom-nav a:hover {
  color: var(--ink);
  background: var(--surface);
}

.bottom-nav svg {
  width: 18px;
  height: 18px;
}

.auth-page {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 1.5rem 1rem;
}

.auth-card {
  width: min(420px, 100%);
  padding: 1.75rem 1.35rem;
  border: 1px solid var(--rule);
  border-radius: 12px;
  background: color-mix(in srgb, var(--surface) 85%, transparent);
  box-shadow: var(--shadow);
  animation: fade-up 260ms var(--ease);
}

.auth-card .brand {
  margin-bottom: 1.4rem;
}

.auth-card h1 {
  font-size: clamp(1.8rem, 6vw, 2.4rem);
  margin-bottom: 0.4rem;
}

.auth-card .lead {
  margin: 0 0 1.4rem;
  color: var(--ink-muted);
}

.auth-card form {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.auth-actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 0.4rem;
}

.flash {
  padding: 0.7rem 0.85rem;
  border-radius: var(--radius);
  border: 1px solid var(--rule);
  background: var(--surface);
  color: var(--ink-muted);
  font-size: 0.92rem;
}

.flash.error {
  border-color: color-mix(in srgb, var(--danger) 50%, transparent);
  color: var(--danger);
}

.flash.ok {
  border-color: color-mix(in srgb, var(--secondary) 50%, transparent);
  color: var(--secondary);
}

.board {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.board-column {
  border-top: 1px solid var(--rule);
  padding-top: 0.9rem;
  animation: fade-up 220ms var(--ease);
}

.board-column-head {
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
  margin-bottom: 0.85rem;
}

.board-column-head .count {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--ink-subtle);
}

.board-cards {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.event-card {
  width: 100%;
  text-align: left;
  padding: 0.95rem 1rem;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--surface);
  transition: border-color 180ms var(--ease), transform 180ms var(--ease),
    background 180ms var(--ease);
}

.event-card:hover {
  border-color: var(--rule-strong);
  background: var(--surface-strong);
  transform: translateY(-1px);
}

.event-card h3 {
  margin: 0 0 0.55rem;
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.event-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 0.75rem;
  font-size: 0.88rem;
  color: var(--ink-muted);
}

.pill {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-subtle);
}

.pill.accent {
  color: var(--accent);
}

.pill.secondary {
  color: var(--secondary);
}

.empty {
  padding: 1rem;
  border: 1px dashed var(--rule);
  border-radius: var(--radius);
  color: var(--ink-subtle);
  font-size: 0.92rem;
}

.panel {
  border: 1px solid var(--rule);
  border-radius: 12px;
  background: color-mix(in srgb, var(--surface) 80%, transparent);
  padding: 1.1rem;
}

.form-grid {
  display: grid;
  gap: 0.95rem;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.25rem;
}

.inline-add {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.5rem;
}

.todo-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.todo-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.65rem;
  align-items: center;
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--bg);
}

.todo-item.done .todo-title {
  color: var(--ink-subtle);
  text-decoration: line-through;
}

.todo-group {
  margin-bottom: 1.4rem;
}

.todo-group-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.65rem;
  padding-bottom: 0.45rem;
  border-bottom: 1px solid var(--rule);
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.1rem;
}

.filter-bar button {
  min-height: 34px;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius);
  border: 1px solid var(--rule);
  color: var(--ink-muted);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: color 180ms var(--ease), border-color 180ms var(--ease),
    background 180ms var(--ease);
}

.filter-bar button.active,
.filter-bar button:hover {
  color: var(--ink);
  border-color: var(--rule-strong);
  background: var(--surface);
}

.month-block {
  margin-bottom: 1.6rem;
}

.month-block h2 {
  margin-bottom: 0.75rem;
}

.cal-event {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 0.85rem;
  padding: 0.8rem 0;
  border-top: 1px solid var(--rule);
}

.cal-day {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-subtle);
  padding-top: 0.15rem;
}

.cal-event button {
  text-align: left;
}

.cal-event h3 {
  margin: 0 0 0.25rem;
  font-size: 1rem;
  font-weight: 500;
}

.settings-section {
  margin-bottom: 1.75rem;
}

.settings-section h2 {
  margin-bottom: 0.35rem;
}

.settings-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin: 0.9rem 0;
}

.settings-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem;
  padding: 0.75rem 0.85rem;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--surface);
}

.settings-item .name {
  flex: 1;
  min-width: 140px;
}

.invite-box {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin-top: 0.75rem;
  padding: 0.75rem;
  border: 1px dashed var(--rule-strong);
  border-radius: var(--radius);
  background: var(--bg);
}

.invite-box code {
  flex: 1;
  min-width: 180px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  word-break: break-all;
  color: var(--ink-muted);
}

.loading {
  padding: 2rem 0;
  color: var(--ink-subtle);
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (min-width: 840px) {
  .app-shell {
    padding-bottom: 0;
  }

  .bottom-nav {
    display: none;
  }

  .desktop-nav,
  .user-chip {
    display: flex;
  }

  .mobile-actions {
    display: none;
  }

  .topbar {
    padding-inline: 1.5rem;
  }

  .main {
    padding: 1.75rem 1.5rem 3rem;
  }

  .board {
    display: grid;
    grid-template-columns: repeat(4, minmax(220px, 1fr));
    gap: 1rem;
    overflow-x: auto;
    padding-bottom: 0.5rem;
  }

  .board-column {
    min-width: 220px;
    border-top: none;
    padding: 0.9rem;
    border: 1px solid var(--rule);
    border-radius: 12px;
    background: color-mix(in srgb, var(--surface) 55%, transparent);
  }

  .form-grid.two {
    grid-template-columns: 1fr 1fr;
  }

  .auth-actions {
    flex-direction: row;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}

@media (display-mode: standalone) {
  body { user-select: none; }
  input, textarea { user-select: text; }
}
button:active, .btn:active { transform: scale(0.97); }