/* ==========================================================================
   Loop — design tokens
   Palette: near-monochrome, Apple-glass surfaces, one muted accent.
   Type: Space Grotesk (display) / Inter (body) / JetBrains Mono (data)
   ========================================================================== */

:root {
  --bg: #F3F3F5;
  --surface: rgba(255, 255, 255, 0.64);
  --surface-solid: #FFFFFF;
  --surface-border: rgba(15, 15, 20, 0.07);
  --text-primary: #17171A;
  --text-secondary: #6B6B72;
  --text-tertiary: #9C9CA3;
  --accent: #6B7686;
  --accent-strong: #4B5563;
  --accent-tint: rgba(107, 118, 134, 0.14);
  --success: #4C7C63;
  --success-tint: rgba(76, 124, 99, 0.14);
  --danger: #B0564A;
  --danger-tint: rgba(176, 86, 74, 0.12);
  --divider: rgba(15, 15, 20, 0.08);
  --shadow-card: 0 1px 2px rgba(15,15,20,0.04), 0 16px 32px -18px rgba(15,15,20,0.20);
  --shadow-tabbar: 0 -1px 24px rgba(15,15,20,0.07);
  --overlay-scrim: rgba(15, 15, 18, 0.45);
  --radius-lg: 26px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --blur: blur(22px);

  --font-display: "Space Grotesk", "Inter", sans-serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, monospace;
}

[data-theme="dark"] {
  --bg: #0B0B0D;
  --surface: rgba(255, 255, 255, 0.055);
  --surface-solid: #17171A;
  --surface-border: rgba(255, 255, 255, 0.08);
  --text-primary: #F4F4F6;
  --text-secondary: #A2A2AA;
  --text-tertiary: #77777F;
  --accent: #9AA5B4;
  --accent-strong: #C2CAD6;
  --accent-tint: rgba(154, 165, 180, 0.16);
  --success: #7FB89A;
  --success-tint: rgba(127, 184, 154, 0.14);
  --danger: #D98276;
  --danger-tint: rgba(217, 130, 118, 0.14);
  --divider: rgba(255, 255, 255, 0.08);
  --shadow-card: 0 1px 2px rgba(0,0,0,0.3), 0 16px 32px -18px rgba(0,0,0,0.6);
  --shadow-tabbar: 0 -1px 24px rgba(0,0,0,0.4);
  --overlay-scrim: rgba(0, 0, 0, 0.6);
}

/* ==========================================================================
   Reset & base
   ========================================================================== */

* { box-sizing: border-box; }

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

body {
  background: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color .35s ease, color .35s ease;
  overscroll-behavior-y: none;
}

button {
  font-family: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

input {
  font-family: inherit;
  color: inherit;
}

h1, h2, p, span { margin: 0; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

/* ==========================================================================
   App shell — centers as a phone-width column on any screen
   ========================================================================== */

.app {
  position: relative;
  max-width: 480px;
  min-height: 100vh;
  margin: 0 auto;
  padding: max(28px, env(safe-area-inset-top)) 20px calc(96px + env(safe-area-inset-bottom));
  background: var(--bg);
}

@media (min-width: 481px) {
  body {
    background: linear-gradient(180deg, #E4E4E8, #F3F3F5);
  }
  [data-theme="dark"] body {
    background: linear-gradient(180deg, #060607, #0B0B0D);
  }
  .app {
    margin-top: 28px;
    margin-bottom: 28px;
    min-height: calc(100vh - 56px);
    border-radius: 44px;
    box-shadow: 0 30px 70px -30px rgba(0,0,0,0.35);
    overflow: hidden;
  }
}

.view { display: none; animation: viewIn .32s ease; }
.view.active { display: block; }

@keyframes viewIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.view-title {
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 600;
  letter-spacing: -0.01em;
  padding-top: 6px;
}

.view-sub {
  color: var(--text-secondary);
  font-size: 14.5px;
  margin-top: 6px;
  margin-bottom: 22px;
}

.eyebrow {
  display: block;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}

/* ==========================================================================
   Home — hero clock + day ring (signature element)
   ========================================================================== */

.home-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 14px 0 30px;
  text-align: center;
}

.ring-wrap {
  position: relative;
  width: 190px;
  height: 190px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.day-ring { width: 100%; height: 100%; transform: rotate(-90deg); }

.day-ring-track {
  fill: none;
  stroke: var(--divider);
  stroke-width: 3;
}

.day-ring-progress {
  fill: none;
  stroke: var(--accent);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-dasharray: 578;
  stroke-dashoffset: 578;
  transition: stroke-dashoffset 1s linear;
}

.time-display {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 40px;
  font-weight: 500;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
}

.date-label {
  margin-top: 16px;
  font-size: 13.5px;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
}

.reminder-banner {
  margin-top: 14px;
  padding: 8px 14px;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--accent-strong);
  background: var(--accent-tint);
  border-radius: 100px;
}

/* ==========================================================================
   Cards
   ========================================================================== */

.card {
  background: var(--surface);
  -webkit-backdrop-filter: var(--blur);
  backdrop-filter: var(--blur);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 22px 22px 24px;
  margin-bottom: 16px;
}

.fact-title {
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 600;
  line-height: 1.28;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}

.fact-body {
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--text-secondary);
}

.quote-card { margin-bottom: 22px; }

.quote-text {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: -0.005em;
}

.quote-text::before { content: "“"; }
.quote-text::after { content: "”"; }

.progress-pill {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 15px 20px;
  border-radius: 100px;
  background: var(--surface-solid);
  border: 1px solid var(--surface-border);
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text-primary);
  box-shadow: var(--shadow-card);
}

.progress-pill svg { color: var(--text-tertiary); }

/* ==========================================================================
   Facts list
   ========================================================================== */

.facts-list { display: flex; flex-direction: column; gap: 10px; }

.fact-row {
  display: flex;
  gap: 14px;
  padding: 16px 18px;
  background: var(--surface);
  -webkit-backdrop-filter: var(--blur);
  backdrop-filter: var(--blur);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
}

.fact-row.is-today { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent) inset; }
.fact-row.is-locked { opacity: 0.55; }

.fact-row-day {
  flex-shrink: 0;
  width: 46px;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-tertiary);
  padding-top: 1px;
}

.fact-row.is-today .fact-row-day { color: var(--accent-strong); font-weight: 600; }

.fact-row-body { flex: 1; }

.fact-row-title {
  font-family: var(--font-display);
  font-size: 15.5px;
  font-weight: 600;
  margin-bottom: 3px;
}

.fact-row-text {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.fact-row-locked-text {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-tertiary);
  padding-top: 2px;
}

/* ==========================================================================
   Tools list
   ========================================================================== */

.tools-list { display: flex; flex-direction: column; gap: 10px; }

.tool-row {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  text-align: left;
  padding: 16px 18px;
  background: var(--surface);
  -webkit-backdrop-filter: var(--blur);
  backdrop-filter: var(--blur);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  transition: transform .15s ease;
}

.tool-row:active { transform: scale(0.98); }

.tool-icon {
  flex-shrink: 0;
  width: 42px;
  height: 42px;
  border-radius: 13px;
  background: var(--accent-tint);
  color: var(--accent-strong);
  display: flex;
  align-items: center;
  justify-content: center;
}

.tool-body { flex: 1; min-width: 0; }

.tool-title {
  font-family: var(--font-display);
  font-size: 15.5px;
  font-weight: 600;
}

.tool-sub {
  font-size: 12.5px;
  color: var(--text-secondary);
  margin-top: 2px;
}

.tool-status {
  flex-shrink: 0;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 5px 10px;
  border-radius: 100px;
  white-space: nowrap;
}

.tool-status.pending { background: var(--accent-tint); color: var(--accent-strong); }
.tool-status.done { background: var(--success-tint); color: var(--success); }

/* ==========================================================================
   Bottom tab bar
   ========================================================================== */

.tabbar {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  max-width: 480px;
  margin: 0 auto;
  display: flex;
  padding: 10px 14px calc(14px + env(safe-area-inset-bottom));
  background: var(--surface-solid);
  border-top: 1px solid var(--surface-border);
  box-shadow: var(--shadow-tabbar);
  z-index: 30;
}

@media (min-width: 481px) { .tabbar { position: absolute; } }

.tab {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 6px 0 2px;
  color: var(--text-tertiary);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.tab svg { width: 22px; height: 22px; }
.tab.active { color: var(--text-primary); }
.tab.active svg { color: var(--accent-strong); }

/* ==========================================================================
   Settings
   ========================================================================== */

.settings-group { margin-bottom: 26px; }

.settings-group-label {
  display: block;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 10px;
  padding-left: 4px;
}

.settings-row {
  display: flex;
  align-items: center;
  gap: 16px;
  justify-content: space-between;
  padding: 16px 18px;
  background: var(--surface);
  -webkit-backdrop-filter: var(--blur);
  backdrop-filter: var(--blur);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
}

.settings-row + .settings-row { margin-top: 8px; }

.settings-row-text { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.settings-row-title { font-size: 14.5px; font-weight: 600; }
.settings-row-sub { font-size: 12px; color: var(--text-secondary); line-height: 1.45; }

.segmented {
  display: flex;
  background: var(--accent-tint);
  border-radius: 100px;
  padding: 3px;
  flex-shrink: 0;
}

.segmented-btn {
  padding: 6px 14px;
  font-size: 12.5px;
  font-weight: 600;
  border-radius: 100px;
  color: var(--text-secondary);
}

.segmented-btn.active { background: var(--surface-solid); color: var(--text-primary); box-shadow: 0 1px 3px rgba(0,0,0,0.12); }

.switch {
  flex-shrink: 0;
  width: 46px;
  height: 28px;
  border-radius: 100px;
  background: var(--divider);
  position: relative;
  transition: background .2s ease;
}

.switch.on { background: var(--accent-strong); }

.switch-knob {
  position: absolute;
  top: 3px; left: 3px;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 3px rgba(0,0,0,0.25);
  transition: transform .2s ease;
}

.switch.on .switch-knob { transform: translateX(18px); }

.pill-btn {
  flex-shrink: 0;
  padding: 9px 16px;
  font-size: 13px;
  font-weight: 600;
  border-radius: 100px;
  background: var(--accent-tint);
  color: var(--accent-strong);
}

.pill-btn-danger { background: var(--danger-tint); color: var(--danger); }

.about-text {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--text-secondary);
  padding: 0 4px;
}

.about-version {
  font-size: 12px;
  color: var(--text-tertiary);
  padding: 10px 4px 0;
  font-family: var(--font-mono);
}

/* ==========================================================================
   Tool overlay
   ========================================================================== */

.overlay {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  background: var(--overlay-scrim);
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s ease;
}

@media (min-width: 481px) { .overlay { align-items: center; } }

.overlay.open { opacity: 1; pointer-events: auto; }

.overlay-sheet {
  width: 100%;
  max-width: 440px;
  max-height: 86vh;
  overflow-y: auto;
  background: var(--surface-solid);
  border-radius: 28px 28px 0 0;
  padding: 26px 24px calc(30px + env(safe-area-inset-bottom));
  transform: translateY(24px);
  transition: transform .3s cubic-bezier(.22,1,.36,1);
  position: relative;
}

@media (min-width: 481px) {
  .overlay-sheet { border-radius: 28px; margin: 0 20px; }
}

.overlay.open .overlay-sheet { transform: translateY(0); }

.overlay-close {
  position: absolute;
  top: 18px; right: 18px;
  width: 30px; height: 30px;
  border-radius: 50%;
  background: var(--accent-tint);
  color: var(--text-secondary);
  font-size: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Overlay content (shared building blocks for tools) */

.ov-eyebrow {
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 14px;
}

.ov-title {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 4px;
  padding-right: 30px;
}

.ov-sub { font-size: 13.5px; color: var(--text-secondary); margin-bottom: 20px; }

.ov-big-number {
  font-family: var(--font-mono);
  font-size: 68px;
  font-weight: 500;
  text-align: center;
  margin: 10px 0 22px;
}

.ov-big-word {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 600;
  text-align: center;
  margin: 10px 0 4px;
  letter-spacing: -0.01em;
}

.ov-word-ipa {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-tertiary);
  margin-bottom: 20px;
}

.ov-block {
  background: var(--accent-tint);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  margin-bottom: 12px;
}

.ov-block-label {
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--accent-strong);
  margin-bottom: 5px;
  display: block;
}

.ov-block-text { font-size: 14px; line-height: 1.5; color: var(--text-primary); }

.ov-clock-wrap { display: flex; justify-content: center; margin: 6px 0 22px; }

.ov-input {
  width: 100%;
  padding: 14px 16px;
  font-size: 16px;
  font-family: var(--font-mono);
  text-align: center;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--divider);
  background: transparent;
  color: var(--text-primary);
  margin-bottom: 14px;
}

.ov-input:focus { outline: none; border-color: var(--accent); }

.ov-btn {
  width: 100%;
  padding: 15px;
  border-radius: 100px;
  background: var(--text-primary);
  color: var(--bg);
  font-size: 14.5px;
  font-weight: 600;
  transition: transform .15s ease, opacity .15s ease;
}

.ov-btn:active { transform: scale(0.98); }
.ov-btn:disabled { opacity: 0.4; }

.ov-btn-ghost {
  background: none;
  color: var(--text-secondary);
  margin-top: 10px;
  font-weight: 500;
}

.ov-result {
  text-align: center;
  padding: 18px 10px;
}

.ov-result-icon {
  width: 52px; height: 52px;
  border-radius: 50%;
  margin: 0 auto 14px;
  display: flex; align-items: center; justify-content: center;
}

.ov-result-icon.ok { background: var(--success-tint); color: var(--success); }
.ov-result-icon.no { background: var(--danger-tint); color: var(--danger); }

.ov-result-title { font-family: var(--font-display); font-size: 19px; font-weight: 600; margin-bottom: 6px; }
.ov-result-sub { font-size: 13.5px; color: var(--text-secondary); line-height: 1.5; margin-bottom: 4px; }

.ov-pr-badge {
  display: inline-block;
  margin-top: 12px;
  padding: 6px 14px;
  border-radius: 100px;
  background: var(--accent-tint);
  color: var(--accent-strong);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.ov-done-note {
  text-align: center;
  padding: 30px 10px 10px;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
}

.ov-timer {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-tertiary);
  margin-bottom: 18px;
}