/* ============================================
   Bier-Streak — Design system & layout
   ============================================ */

/* Animated gradient text (greeting only) */
@property --color-1 {
  syntax: "<color>";
  inherits: false;
  initial-value: hsl(98 100% 62%);
}
@property --color-2 {
  syntax: "<color>";
  inherits: false;
  initial-value: hsl(204 100% 59%);
}
@keyframes gradient-change {
  to {
    --color-1: hsl(210 100% 59%);
    --color-2: hsl(310 100% 59%);
  }
}

:root {
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;

  --font-sans: "SF Pro Text", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, "SF Mono", monospace;
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --line-tight: 1.25;
  --line-normal: 1.5;

  --bg-page: #0f172a;
  --bg-card: #1e293b;
  --bg-card-hover: #334155;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #38bdf8;
  --accent-hover: #7dd3fc;
  --success: #34d399;
  --success-bg: rgba(52, 211, 153, 0.15);
  --warning: #fbbf24;
  --danger: #f87171;
  --danger-hover: #fca5a5;
  --border: #334155;
  --today-outline: #38bdf8;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-full: 9999px;
  --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.25);
  --shadow-card-strong: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-btn: 0 2px 8px rgba(0, 0, 0, 0.2);

  --ease-out: cubic-bezier(0.33, 1, 0.68, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 400ms;
}

/* Reduced motion: shorten or disable animations */
@media (prefers-reduced-motion: reduce) {
  :root {
    --duration-fast: 0ms;
    --duration-normal: 0ms;
    --duration-slow: 0ms;
  }
  .stat-card__value--animate,
  .progress-bar__fill,
  .toast,
  .modal__content { transition-duration: 0ms !important; }
  .celebration-dots { display: none !important; }
  .btn:active { transform: none; }
}

*, *::before, *::after { box-sizing: border-box; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--line-normal);
  color: var(--text-primary);
  background: var(--bg-page);
  min-height: 100vh;
  min-height: 100dvh;
}

/* Twinkling stars background */
.stars-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}
.star {
  position: absolute;
  background: #fff;
  border-radius: 50%;
  animation: twinkle 2.5s ease-in-out infinite;
  opacity: 0.3;
}
@media (prefers-reduced-motion: reduce) {
  .star { animation: none; opacity: 0.2; }
}
@keyframes twinkle {
  0%, 100% { opacity: 0.2; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.1); }
}

#app {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

/* ============================================
   Header
   ============================================ */
.header {
  position: sticky;
  top: 0;
  z-index: 10;
  padding: var(--space-4);
  background: var(--bg-page);
  border-bottom: 1px solid var(--border);
}
.header__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}
.header__title {
  margin: 0;
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: -0.02em;
}
.header__subtitle {
  margin: var(--space-2) 0 0;
  font-size: clamp(1.1rem, 2.5vw + 1rem, 1.5rem);
  font-weight: 600;
  color: var(--text-secondary);
  text-align: center;
  letter-spacing: -0.01em;
}
.header__greeting {
  margin: var(--space-1) 0 0;
  font-size: var(--text-sm);
  font-weight: 700;
  text-align: center;
}
/* Fallback: plain bold text when @property (CSS Houdini) is not supported (e.g. Firefox) */
.header__greeting .greeting-text {
  color: var(--text-primary);
}
/* Animated gradient only when the browser supports @property */
.supports-css-property .header__greeting .greeting-text {
  background: linear-gradient(to right in oklch, var(--color-1), var(--color-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
  animation: gradient-change 2s linear infinite alternate;
}
.header__greeting .greeting-emoji {
  color: var(--text-primary);
  -webkit-text-fill-color: initial;
  background: none;
  background-clip: unset;
}
@media (prefers-reduced-motion: reduce) {
  .supports-css-property .header__greeting .greeting-text {
    animation: none;
  }
}

.lang-switcher {
  display: flex;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: var(--space-1);
}
.lang-btn {
  min-width: 44px;
  min-height: 36px;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: 600;
  font-family: inherit;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: color var(--duration-fast), background-color var(--duration-fast);
  -webkit-tap-highlight-color: transparent;
}
.lang-btn:hover { color: var(--text-primary); }
.lang-btn[aria-pressed="true"] {
  color: var(--bg-page);
  background: var(--accent);
}
.lang-btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--accent);
}

/* ============================================
   Main
   ============================================ */
.main {
  flex: 1;
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  padding: var(--space-4);
  padding-bottom: calc(var(--space-4) + 64px);
}

.section { display: block; }

/* ============================================
   Cards
   ============================================ */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-bottom: var(--space-5);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
  transition: border-color var(--duration-fast) var(--ease-out),
              background-color var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
}
.card__title {
  margin: 0 0 var(--space-4);
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: -0.01em;
}

/* ============================================
   Setup section — collapsible when challenge active
   ============================================ */
.setup-card__header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}
.setup-card__header .card__title { margin-bottom: 0; }
.setup-no-challenge-msg {
  width: 100%;
  margin: var(--space-2) 0 0;
  font-size: var(--text-sm);
  color: var(--text-muted);
}
.setup-toggle-btn { display: none; }
.setup-section--collapsed .setup-card__header { margin-bottom: 0; }
.setup-section--collapsed .setup-form { display: none; }
.setup-section--collapsed .setup-toggle-btn { display: inline-flex; }

/* ============================================
   Setup form
   ============================================ */
.setup-form .form-group { margin-bottom: var(--space-5); }
.setup-form .form-group--computed { margin-bottom: var(--space-6); }
.form-group label,
.form-group .label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}
.form-group input[type="number"],
.form-group input[type="date"] {
  width: 100%;
  max-width: 200px;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  font-family: inherit;
  color: var(--text-primary);
  background: var(--bg-page);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: border-color var(--duration-fast), box-shadow var(--duration-fast);
}
.form-group input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.2);
}
.form-hint {
  display: block;
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-top: var(--space-1);
}
.computed-value {
  font-size: var(--text-base);
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-base);
  font-weight: 600;
  font-family: inherit;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease-out),
              background-color var(--duration-fast),
              color var(--duration-fast),
              box-shadow var(--duration-fast);
  -webkit-tap-highlight-color: transparent;
}
.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent);
}
@media (prefers-reduced-motion: reduce) {
  .btn:active { transform: none; }
}
.btn:active:not(:disabled) { transform: scale(0.98); }

.btn--primary {
  background: var(--accent);
  color: var(--bg-page);
  box-shadow: var(--shadow-btn);
}
.btn--primary:hover:not(:disabled) { background: var(--accent-hover); }
.btn--primary:disabled { opacity: 0.6; cursor: not-allowed; }

.btn--secondary {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn--secondary:hover { background: var(--border); }

.btn--ghost {
  background: transparent;
  color: var(--text-secondary);
}
.btn--ghost:hover { color: var(--text-primary); }

.btn--danger {
  background: var(--danger);
  color: var(--bg-page);
}
.btn--danger:hover { background: var(--danger-hover); }

.btn--large {
  min-height: 52px;
  padding: var(--space-4) var(--space-6);
  font-size: var(--text-lg);
}

/* ============================================
   Motivation
   ============================================ */
.motivation-card {
  padding: var(--space-5);
  margin-bottom: var(--space-5);
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.08) 0%, rgba(52, 211, 153, 0.06) 100%);
  border-color: rgba(56, 189, 248, 0.2);
}
.motivation-text {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--text-secondary);
  font-style: italic;
  text-align: center;
  line-height: var(--line-normal);
  transition: opacity 0.4s ease;
}
.motivation-text--sparkle {
  position: relative;
  min-height: 1.5em;
}
.motivation-text--sparkle::after {
  content: "|";
  animation: blink 0.8s step-end infinite;
  margin-left: 2px;
}
@media (prefers-reduced-motion: reduce) {
  .motivation-text--sparkle::after { animation: none; opacity: 0.6; }
}
@keyframes blink {
  50% { opacity: 0; }
}

/* ============================================
   Stats grid
   ============================================ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}
@media (min-width: 400px) {
  .stats-grid { grid-template-columns: repeat(3, 1fr); }
}
.stat-card {
  padding: var(--space-5);
  text-align: center;
  border-radius: var(--radius-lg);
  transition: background-color var(--duration-fast), border-color var(--duration-fast);
}
.stat-card:hover {
  background: var(--bg-card-hover);
}
.stat-card__value {
  display: block;
  font-size: var(--text-2xl);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
  transition: transform var(--duration-normal) var(--ease-out);
}
.stat-card__value--animate { transition: transform var(--duration-normal) var(--ease-out); }
.stat-card__label {
  display: block;
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-top: var(--space-2);
  letter-spacing: 0.01em;
}
.stat-card--highlight .stat-card__value { color: var(--success); }

/* ============================================
   Progress bar
   ============================================ */
.progress-section { padding: var(--space-5); }
.progress-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-3);
}
.progress-header__value {
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  color: var(--text-primary);
}
.progress-bar {
  height: 12px;
  background: var(--bg-page);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.progress-bar__fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--success));
  border-radius: var(--radius-full);
  transition: width var(--duration-slow) var(--ease-out);
}

/* ============================================
   Dates row
   ============================================ */
.dates-row {
  display: flex;
  justify-content: center;
  gap: var(--space-8);
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-5);
}

/* ============================================
   Action bar
   ============================================ */
/* Glass container for date selection */
.log-date-glass {
  margin-bottom: var(--space-4);
  padding: var(--space-4);
  background: rgba(30, 41, 59, 0.55);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.04);
}
@media (max-width: 480px) {
  .log-date-glass { padding: var(--space-3); }
}
.log-date-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
}
.log-date-label { font-size: var(--text-sm); color: var(--text-muted); }
.log-date-options { display: flex; gap: var(--space-2); flex-wrap: wrap; }
.log-date-opt { min-height: 40px; }
.log-date-opt.is-selected { font-weight: 700; color: var(--accent); }

.action-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
  align-items: stretch;
}
.action-bar .btn--action {
  flex: 1 1 0;
  min-width: 200px;
  min-height: 52px;
  width: 100%;
  border-radius: var(--radius-lg);
  box-sizing: border-box;
}
@media (max-width: 480px) {
  .action-bar .btn--action { min-width: 100%; }
  .action-bar { gap: var(--space-5); }
  .footer-actions { gap: var(--space-5); }
  .export-buttons { gap: var(--space-5); }
  .modal__actions { gap: var(--space-5); }
}
.completion-banner { background: var(--success-bg); border-color: var(--success); }
.completion-banner__text { margin: 0; font-size: var(--text-base); font-weight: 600; color: var(--success); }
.certificates-list { max-height: 60vh; overflow-y: auto; margin-bottom: var(--space-4); }
.certificates-list .cert-item { display: block; width: 100%; text-align: left; padding: var(--space-3); margin-bottom: var(--space-2); border-radius: var(--radius-md); border: 1px solid var(--border); background: var(--bg-card-hover); cursor: pointer; }
.certificates-list .cert-item:hover { background: var(--bg-card); }
.certificates-list .cert-item:focus-visible { outline: none; box-shadow: 0 0 0 3px var(--accent); }

/* ============================================
   Calendar — fixed tile sizing & visuals
   ============================================ */
.calendar-card {
  padding: var(--space-6);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card-strong);
  background: var(--bg-card);
}
.calendar-card__header {
  margin-bottom: var(--space-4);
}
.calendar-card__header .card__title { margin-bottom: var(--space-1); }
.calendar-range {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: var(--space-2);
  margin-bottom: var(--space-5);
  max-width: 100%;
}

/* Every tile: identical size — fixed min width/height, tabular-nums, centered content */
.calendar-day {
  --tile-size: 40px;
  min-width: var(--tile-size);
  min-height: var(--tile-size);
  width: var(--tile-size);
  height: var(--tile-size);
  max-width: var(--tile-size);
  max-height: var(--tile-size);
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: default;
  transition: background-color var(--duration-fast), transform var(--duration-fast), box-shadow var(--duration-fast);
  -webkit-tap-highlight-color: transparent;
}
@media (max-width: 380px) {
  .calendar-day { --tile-size: 36px; font-size: 0.75rem; }
}
.calendar-day--logged {
  background: var(--success);
  color: var(--bg-page);
  border-color: rgba(0, 0, 0, 0.08);
  position: relative;
}
.calendar-day--logged::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 6px;
  height: 10px;
  margin-left: -4px;
  margin-top: -6px;
  border: solid var(--bg-page);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
  opacity: 0.9;
}
.calendar-day--today {
  outline: 2px solid var(--today-outline);
  outline-offset: 2px;
  background: var(--bg-card-hover);
  color: var(--text-primary);
  box-shadow: 0 0 0 1px var(--today-outline);
}
.calendar-day--today.calendar-day--logged {
  background: var(--success);
  outline-color: var(--text-primary);
  box-shadow: 0 0 0 2px var(--text-primary);
}
.calendar-day--today.calendar-day--logged::after { border-color: var(--bg-page); }
.calendar-day--future {
  color: var(--text-muted);
  opacity: 0.5;
  background: var(--bg-page);
}
.calendar-day--missed {
  background: var(--danger);
  color: var(--bg-page);
  border-color: rgba(0, 0, 0, 0.1);
}
.calendar-day--past.calendar-day--editable {
  cursor: pointer;
}
.calendar-day--past.calendar-day--editable:hover {
  background: var(--bg-card-hover);
}
.calendar-day--past.calendar-day--editable:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.calendar-legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5);
  font-size: var(--text-xs);
  color: var(--text-muted);
}
.legend-item { display: flex; align-items: center; gap: var(--space-2); }
.legend-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}
.legend-dot--logged { background: var(--success); }
.legend-dot--today {
  outline: 2px solid var(--today-outline);
  background: var(--bg-card-hover);
}
.legend-dot--missed { background: var(--danger); border: 1px solid rgba(0,0,0,0.1); }

/* ============================================
   Footer actions & footer bar
   ============================================ */
.footer-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

.export-section {
  margin-top: var(--space-2);
}
.export-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}
.btn--report-view {
  width: 100%;
  min-height: 48px;
  font-weight: 600;
  -webkit-tap-highlight-color: transparent;
}
.btn--report-view:hover {
  background: var(--accent-hover);
}
.btn--report-view:active {
  transform: scale(0.98);
}
.btn--report-view:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.4);
}

.footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-4);
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  z-index: 10;
}
.footer-inner {
  max-width: 480px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: var(--space-6);
}
.sound-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  font-size: var(--text-sm);
  color: var(--text-secondary);
}
.sound-toggle input { position: absolute; opacity: 0; width: 0; height: 0; }
.toggle-slider {
  width: 44px;
  height: 24px;
  background: var(--bg-page);
  border-radius: var(--radius-full);
  position: relative;
  transition: background var(--duration-fast);
}
.toggle-slider::before {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  left: 2px;
  top: 2px;
  background: var(--text-primary);
  border-radius: 50%;
  transition: transform var(--duration-fast) var(--ease-out);
}
.sound-toggle input:checked + .toggle-slider { background: var(--accent); }
.sound-toggle input:checked + .toggle-slider::before { transform: translateX(20px); }
.volume-control {
  flex: 1;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.volume-label {
  font-size: var(--text-xs);
  color: var(--text-muted);
  min-width: 4ch;
}
.volume-control input[type="range"] {
  flex: 1;
  max-width: 120px;
  height: 6px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--bg-page);
  border-radius: var(--radius-full);
}
.volume-control input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  background: var(--accent);
  border-radius: 50%;
  cursor: pointer;
  transition: transform var(--duration-fast);
}
.volume-control input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.1); }

/* ============================================
   Modals
   ============================================ */
.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  animation: modalFadeIn var(--duration-normal) var(--ease-out);
}
.modal[hidden] { display: none; }
.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
}
.modal__content {
  position: relative;
  width: 100%;
  max-width: 360px;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  border: 1px solid var(--border);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  animation: modalSlideUp var(--duration-normal) var(--ease-out);
}
.modal__title { margin: 0 0 var(--space-3); font-size: var(--text-xl); font-weight: 600; }
.modal__text {
  margin: 0 0 var(--space-6);
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: var(--line-normal);
}
.modal__actions { display: flex; gap: var(--space-3); justify-content: flex-end; }
.modal__actions--center { justify-content: center; margin-top: var(--space-5); }
.modal__content--wide { max-width: 420px; }
.modal__content--completion { text-align: center; }
.completion-message__text {
  margin: 0;
  font-size: var(--text-lg);
  line-height: 1.5;
  color: var(--text-primary);
  font-weight: 500;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.log-section-no-challenge {
  margin: var(--space-4) 0;
  font-size: var(--text-sm);
  color: var(--text-muted);
  text-align: center;
}
@keyframes modalFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes modalSlideUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============================================
   Toasts
   ============================================ */
.toast {
  position: fixed;
  left: var(--space-4);
  right: var(--space-4);
  bottom: calc(64px + var(--space-4));
  z-index: 200;
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  animation: toastIn var(--duration-normal) var(--ease-out);
}
@media (min-width: 480px) {
  .toast {
    left: 50%;
    right: auto;
    transform: translateX(-50%);
    max-width: 360px;
  }
}
.toast[hidden] { display: none; }
.toast--success { background: var(--success); color: var(--bg-page); }
.toast--notice {
  background: var(--bg-card);
  border: 1px solid var(--warning);
  color: var(--text-primary);
}
.toast__message {
  margin: 0;
  font-size: var(--text-base);
  font-weight: 500;
  text-align: center;
}
@keyframes toastIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
@media (min-width: 480px) {
  @keyframes toastIn {
    from { opacity: 0; transform: translate(-50%, 12px); }
    to { opacity: 1; transform: translate(-50%, 0); }
  }
}

/* ============================================
   Celebration (micro-animation on log success)
   ============================================ */
.celebration-dots {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 150;
  overflow: hidden;
}
.celebration-dot {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  animation: celebrationPop var(--duration-slow) var(--ease-bounce) forwards;
  opacity: 0;
}
@media (prefers-reduced-motion: reduce) {
  .celebration-dot { animation: none; display: none; }
}
@keyframes celebrationPop {
  0% {
    opacity: 0;
    transform: scale(0) translate(0, 0);
  }
  40% {
    opacity: 0.9;
    transform: scale(1) translate(var(--dx), var(--dy));
  }
  100% {
    opacity: 0;
    transform: scale(0.5) translate(var(--dx), var(--dy));
  }
}