/* Open Loops. Paper-white by day, ink-dark by night, one cobalt accent,
   sage for done. Tokens follow the three-declaration pattern from
   svendoldenburg.com/mor so a manual data-theme toggle can win later. */

:root {
  --bg: #F7F5F1;
  --surface: #FFFFFF;
  --surface-2: #F1EEE8;
  --line: #E7EAF0;
  --ink: #1E2530;
  --muted: #5B6472;
  --faint: #9AA2B1;
  --accent: #0047AB;
  --accent-soft: rgba(0, 71, 171, 0.10);
  --sage: #4F8A6D;
  --clay: #B0413E;
  --on-accent: #FFFFFF;
  --radius: 14px;
  --nav-h: 64px;
  --topbar-h: 52px;
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #14171D;
    --surface: #1C2029;
    --surface-2: #232835;
    --line: #2C3140;
    --ink: #ECEDF0;
    --muted: #9AA2B1;
    --faint: #6B7383;
    --accent: #5B8FE0;
    --accent-soft: rgba(91, 143, 224, 0.16);
    --sage: #7EC29A;
    --clay: #E8837A;
    --on-accent: #0F1522;
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #14171D;
  --surface: #1C2029;
  --surface-2: #232835;
  --line: #2C3140;
  --ink: #ECEDF0;
  --muted: #9AA2B1;
  --faint: #6B7383;
  --accent: #5B8FE0;
  --accent-soft: rgba(91, 143, 224, 0.16);
  --sage: #7EC29A;
  --clay: #E8837A;
  --on-accent: #0F1522;
  color-scheme: dark;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}

.hidden { display: none !important; }

button {
  font-family: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

input {
  font-family: inherit;
  color: var(--ink);
}

/* ---------- Auth ---------- */

.auth-screen {
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
}

.auth-inner { width: 100%; max-width: 340px; text-align: center; }

.auth-mark {
  width: 52px; height: 52px;
  margin: 0 auto 28px;
  border: 3px solid var(--accent);
  border-right-color: transparent;
  border-radius: 50%;
  position: relative;
  transform: rotate(-30deg);
}
.auth-mark::after {
  content: '';
  position: absolute;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--sage);
  top: 4px; right: -2px;
}

.auth-label {
  font-size: 0.72rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 14px;
}

.auth-title {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 500;
  font-size: 1.9rem;
  line-height: 1.25;
  margin-bottom: 36px;
}

.auth-form { display: flex; flex-direction: column; gap: 12px; }

.auth-form input {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
  font-size: 1rem;
}
.auth-form input:focus { outline: none; border-color: var(--accent); }

.auth-form button {
  margin-top: 8px;
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 600;
  letter-spacing: 0.04em;
  border-radius: var(--radius);
  padding: 14px;
  font-size: 1rem;
}
.auth-form button:disabled { opacity: 0.6; }

.auth-error { color: var(--clay); font-size: 0.88rem; }

/* ---------- Shell ---------- */

.app { min-height: 100dvh; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--topbar-h);
  padding: calc(env(safe-area-inset-top) + 12px) 20px 10px;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}

.topbar__title {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 500;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
}

.topbar__actions { display: flex; align-items: center; gap: 12px; }

.topbar__logout {
  font-size: 0.78rem;
  color: var(--faint);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.sync-badge {
  font-size: 0.72rem;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 99px;
  padding: 3px 10px;
  font-weight: 500;
}

.view-container {
  padding: 8px 20px calc(var(--nav-h) + var(--safe-bottom) + 24px);
  max-width: 520px;
  margin: 0 auto;
}

.loading { text-align: center; color: var(--faint); padding: 48px 0; font-size: 1.2rem; }
.empty { text-align: center; color: var(--muted); padding: 32px 0; }
.offline-note { color: var(--clay); font-size: 0.82rem; margin-top: 10px; text-align: center; }

.zone__title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.72rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
  margin: 22px 0 12px;
}

.count-badge {
  font-size: 0.72rem;
  letter-spacing: 0;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 99px;
  padding: 1px 9px;
  font-variant-numeric: tabular-nums;
}

/* ---------- Bottom nav ---------- */

.bottom-nav {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 10;
  display: flex;
  height: calc(var(--nav-h) + var(--safe-bottom));
  padding-bottom: var(--safe-bottom);
  background: var(--surface);
  border-top: 1px solid var(--line);
}

.bottom-nav__item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  color: var(--faint);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  transition: color 0.2s;
}
.bottom-nav__item svg { width: 22px; height: 22px; }
.bottom-nav__item.active { color: var(--accent); }

/* ---------- Dump ---------- */

.dump { padding-top: 12px; }

.dump__input {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
  font-size: 1.05rem;
  line-height: 1.4;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
}
.dump__input::placeholder { color: var(--faint); }
.dump__input:focus { outline: none; border-color: var(--accent); }

.dump__hint {
  font-size: 0.78rem;
  color: var(--faint);
  margin: 8px 4px 0;
}

/* ---------- Tabs ---------- */

.tabs {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  margin: 12px 0 14px;
  padding-bottom: 2px;
  scrollbar-width: none;
}
.tabs::-webkit-scrollbar { display: none; }

.tab {
  flex-shrink: 0;
  padding: 8px 13px;
  border-radius: 99px;
  color: var(--muted);
  font-size: 0.85rem;
  white-space: nowrap;
  transition: background 0.15s, color 0.15s;
}
.tab.active {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
}
.tab__count {
  margin-left: 6px;
  font-size: 0.74rem;
  opacity: 0.75;
  font-variant-numeric: tabular-nums;
}

/* ---------- Loop rows ---------- */

.loop-list { display: flex; flex-direction: column; gap: 8px; }

.loop {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 12px 12px 14px;
  transition: opacity 0.25s;
  animation: rise 0.3s ease both;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

.loop--done { opacity: 0.6; }
.loop--queued { border-style: dashed; }

.loop__check {
  flex-shrink: 0;
  width: 30px; height: 30px;
  border-radius: 50%;
  border: 1.5px solid var(--faint);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--on-accent);
  transition: background 0.2s, border-color 0.2s, transform 0.15s;
}
.loop__check:active { transform: scale(0.9); }
.loop__check svg { width: 16px; height: 16px; }
.loop--done .loop__check { background: var(--sage); border-color: var(--sage); }

.loop__body { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.loop__title { font-weight: 500; overflow-wrap: anywhere; }
.loop--done .loop__title { text-decoration: line-through; text-decoration-color: var(--faint); }
.loop__meta { font-size: 0.76rem; color: var(--muted); margin-top: 1px; }

.loop__move {
  flex-shrink: 0;
  font-size: 0.74rem;
  color: var(--accent);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 600;
  padding: 8px 6px;
}

/* ---------- Bottom sheet ---------- */

.sheet-backdrop {
  position: fixed; inset: 0;
  z-index: 40;
  background: rgba(20, 24, 32, 0.45);
  opacity: 0;
  transition: opacity 0.22s;
}
.sheet-backdrop.open { opacity: 1; }

.sheet {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 50;
  background: var(--surface);
  border-top: 1px solid var(--line);
  border-radius: 20px 20px 0 0;
  padding: 10px 20px calc(20px + var(--safe-bottom));
  max-height: 86dvh;
  overflow-y: auto;
  transform: translateY(100%);
  transition: transform 0.22s ease;
  max-width: 520px;
  margin: 0 auto;
}
.sheet.open { transform: none; }

.sheet__handle {
  width: 36px; height: 4px;
  border-radius: 2px;
  background: var(--line);
  margin: 4px auto 14px;
}

.sheet__title {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 500;
  font-size: 1.2rem;
  line-height: 1.3;
  margin-bottom: 4px;
  overflow-wrap: anywhere;
}

.sheet__sub {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 14px 0 8px;
}

.sheet__input {
  width: 100%;
  margin-top: 12px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 14px;
  font-size: 1rem;
}
.sheet__input:focus { outline: none; border-color: var(--accent); }

.sheet__save {
  width: 100%;
  margin-top: 14px;
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 600;
  border-radius: var(--radius);
  padding: 14px;
  font-size: 1rem;
  letter-spacing: 0.03em;
}
.sheet__save:disabled { opacity: 0.35; }

.move-grid { display: grid; gap: 8px; }

.move-btn {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
  text-align: left;
  font-size: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: transform 0.15s, border-color 0.15s;
}
.move-btn:active { transform: scale(0.98); }
.move-btn__hint { font-size: 0.76rem; color: var(--muted); }
.move-btn--drop { color: var(--clay); }

/* ---------- Toast ---------- */

.toast {
  position: fixed;
  bottom: calc(var(--nav-h) + var(--safe-bottom) + 16px);
  left: 50%;
  transform: translate(-50%, 12px);
  z-index: 60;
  background: var(--ink);
  color: var(--bg);
  border-radius: 99px;
  padding: 10px 18px;
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.88rem;
  opacity: 0;
  transition: opacity 0.2s, transform 0.2s;
  white-space: nowrap;
  max-width: calc(100vw - 32px);
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast span { overflow: hidden; text-overflow: ellipsis; }

.toast__action {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  flex-shrink: 0;
}
:root[data-theme="dark"] .toast__action { color: #9BBCF0; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .toast__action { color: #9BBCF0; }
}