/* Age Calculator - platform page + tool UI */
:root {
  --ac-brand: #3d85c6;
  --ac-brand-dark: #2c6396;
  --ac-brand-light: #eaf4fb;
  --ac-brand-border: #b6d5f2;
  --ac-accent: #f7b731;
  --ac-bg: #f4f8fc;
  --ac-surface: #ffffff;
  --ac-text: #1e293b;
  --ac-muted: #64748b;
  --ac-shadow: 0 10px 28px rgba(61, 133, 198, 0.12);
  --ac-radius: 16px;
  --ac-font: 'DM Sans', system-ui, sans-serif;
  --ac-touch: 48px;
}

#tool-main {
  font-family: var(--ac-font);
  background: var(--ac-bg);
  background-image: radial-gradient(ellipse 70% 40% at 50% -5%, rgba(61, 133, 198, 0.1), transparent);
  padding-bottom: 16px;
}

.ac-wrap {
  max-width: 480px;
  margin: 0 auto;
  padding: 12px 16px 8px;
}

.ac-hero {
  text-align: center;
  margin-bottom: 14px;
}

.ac-hero h1 {
  font-size: clamp(1.35rem, 4.5vw, 1.85rem);
  font-weight: 800;
  color: var(--ac-brand);
  margin: 0 0 6px;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.ac-hero p {
  color: var(--ac-muted);
  font-size: 0.88rem;
  margin: 0;
  line-height: 1.45;
  padding: 0 4px;
}

.ac-hero-actions {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 4px;
}

.ac-lang-toggle {
  background: var(--ac-surface);
  border: 1px solid var(--ac-brand-border);
  border-radius: 999px;
  font-size: 0.88rem;
  color: var(--ac-brand);
  font-weight: 700;
  cursor: pointer;
  padding: 8px 14px;
  min-height: 36px;
}

.ac-lang-toggle:focus-visible {
  outline: 2px solid var(--ac-brand);
  outline-offset: 2px;
}

/* Tool shell */
.mn-age-tool {
  width: 100%;
  margin: 0 auto;
  padding: 0;
}

.mn-age-tool .main-center-wrap {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  width: 100%;
}

.age-container {
  width: 100%;
  margin: 0 auto;
  background: var(--ac-surface);
  border: 1px solid var(--ac-brand-border);
  border-radius: var(--ac-radius);
  box-shadow: var(--ac-shadow);
  padding: 20px 18px 18px;
}

.age-header {
  text-align: center;
  margin-bottom: 6px;
}

.age-header .fa-cake-candles {
  color: var(--ac-accent);
  font-size: 1.75rem;
}

.age-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.input-label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.input-group label {
  color: var(--ac-brand-dark);
  font-weight: 600;
  font-size: 0.92rem;
  display: flex;
  align-items: center;
  gap: 6px;
  line-height: 1.3;
  flex: 1;
  min-width: 0;
}

.input-group label i {
  flex-shrink: 0;
  color: var(--ac-brand);
}

.input-group input[type="date"] {
  width: 100%;
  min-height: var(--ac-touch);
  padding: 12px 14px;
  border: 1.5px solid var(--ac-brand-border);
  border-radius: 12px;
  font-size: 16px;
  font-family: inherit;
  color: var(--ac-text);
  background: var(--ac-surface);
  -webkit-appearance: none;
  appearance: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.input-group input[type="date"]:focus {
  border-color: var(--ac-brand);
  outline: none;
  box-shadow: 0 0 0 3px rgba(61, 133, 198, 0.15);
}

.ac-today-btn {
  flex-shrink: 0;
  border: 1px solid var(--ac-brand-border);
  background: var(--ac-brand-light);
  color: var(--ac-brand-dark);
  font-size: 0.78rem;
  font-weight: 700;
  font-family: inherit;
  padding: 6px 12px;
  min-height: 32px;
  border-radius: 999px;
  cursor: pointer;
  white-space: nowrap;
}

.ac-today-btn:active {
  transform: scale(0.97);
}

.calculate-btn {
  width: 100%;
  min-height: var(--ac-touch);
  background: linear-gradient(135deg, var(--ac-brand) 0%, #5ba3e0 100%);
  color: #fff;
  border: none;
  padding: 14px 18px;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(61, 133, 198, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 4px;
  -webkit-tap-highlight-color: transparent;
}

.calculate-btn:active {
  transform: scale(0.98);
}

.calculate-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Results */
.result {
  margin-top: 20px;
  padding: 16px 14px;
  border-radius: 14px;
  background: var(--ac-brand-light);
  border: 1px solid var(--ac-brand-border);
  display: none;
}

.result.show {
  display: block;
  animation: ac-fadeIn 0.45s ease;
}

@keyframes ac-fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.result-heading {
  margin: 0 0 12px;
  text-align: center;
  color: var(--ac-muted);
  font-size: 0.88rem;
  font-weight: 600;
}

.result-heading i {
  color: var(--ac-brand);
  margin-right: 6px;
}

.age-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 14px;
}

.age-stat-card {
  background: var(--ac-surface);
  border: 1px solid var(--ac-brand-border);
  border-radius: 12px;
  padding: 12px 6px;
  text-align: center;
  box-shadow: 0 2px 8px rgba(61, 133, 198, 0.06);
}

.age-stat-num {
  display: block;
  font-size: clamp(1.5rem, 6vw, 2rem);
  font-weight: 800;
  color: var(--ac-brand);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.age-stat-lbl {
  display: block;
  margin-top: 4px;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--ac-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.birthday-countdown {
  display: none;
  margin-bottom: 14px;
}

.birthday-countdown.is-visible {
  display: block;
}

.birthday-countdown-title {
  margin: 0 0 8px;
  text-align: center;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--ac-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.birthday-countdown-card {
  background: linear-gradient(135deg, #fff9eb 0%, #fff 100%);
  border: 1.5px solid #f5d78e;
  border-radius: 14px;
  padding: 14px 12px;
  text-align: center;
  margin-bottom: 8px;
  box-shadow: 0 4px 14px rgba(247, 183, 49, 0.12);
}

.birthday-days-num {
  display: block;
  font-size: clamp(2rem, 9vw, 2.75rem);
  font-weight: 800;
  color: #d97706;
  line-height: 1;
  letter-spacing: -0.03em;
}

.birthday-days-lbl {
  display: block;
  margin-top: 6px;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--ac-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.next-birthday-info {
  font-size: 0.84rem;
  color: var(--ac-text);
  font-weight: 500;
  background: var(--ac-surface);
  border: 1px solid var(--ac-brand-border);
  border-radius: 12px;
  padding: 10px 12px;
  line-height: 1.45;
  text-align: center;
}

.next-birthday-info i {
  color: var(--ac-brand);
  margin-right: 4px;
}

.next-bday-weekday {
  color: var(--ac-accent);
  font-weight: 700;
}

.next-bday-today {
  color: #d97706;
  font-weight: 700;
  font-size: 0.9rem;
}

.total-time-info {
  margin-top: 10px;
}

.total-time-title {
  display: block;
  text-align: center;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--ac-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.total-time-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}

.total-time-chip {
  background: var(--ac-surface);
  border: 1px solid var(--ac-brand-border);
  border-radius: 10px;
  padding: 8px 4px;
  text-align: center;
  line-height: 1.25;
}

.total-time-chip strong {
  display: block;
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--ac-brand-dark);
  word-break: break-all;
}

.total-time-chip span {
  display: block;
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--ac-muted);
  margin-top: 2px;
}

#powered-by {
  text-align: center;
  font-size: 0.85rem;
  color: var(--ac-muted);
  margin-top: 14px;
  padding: 0 8px;
}

#powered-by a {
  color: var(--ac-brand);
  text-decoration: underline;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Tablet+ */
@media (min-width: 480px) {
  .ac-wrap {
    padding: 16px 20px 12px;
  }

  .age-container {
    padding: 24px 22px 22px;
  }

  .age-stats-grid {
    gap: 10px;
  }

  .age-stat-card {
    padding: 14px 8px;
  }

  .total-time-grid {
    grid-template-columns: repeat(5, 1fr);
    gap: 8px;
  }
}

/* Small phones */
@media (max-width: 360px) {
  .ac-wrap {
    padding: 10px 12px 8px;
  }

  .age-container {
    padding: 16px 14px 14px;
  }

  .age-stat-num {
    font-size: 1.35rem;
  }

  .age-stat-lbl {
    font-size: 0.68rem;
  }

  .input-group label {
    font-size: 0.86rem;
  }
}

/* Safe area for notched phones */
@supports (padding: max(0px)) {
  .ac-wrap {
    padding-left: max(16px, env(safe-area-inset-left));
    padding-right: max(16px, env(safe-area-inset-right));
  }
}