/* -----------------------------------------------------------------------
   Design tokens
------------------------------------------------------------------------ */
:root {
  --color-primary: #f97316;
  --color-primary-strong: #ea580c;
  --color-secondary: #facc15;
  --color-surface: #ffffff;
  --color-surface-muted: rgba(255, 255, 255, 0.85);
  --color-surface-dark: rgba(15, 23, 42, 0.85);
  --color-background: #fef6f0;
  --color-background-strong: #fde4d0;
  --color-text: #1f2937;
  --color-text-light: #6b7280;
  --color-border: rgba(15, 23, 42, 0.08);
  --color-border-strong: rgba(15, 23, 42, 0.15);
  --color-success: #22c55e;
  --color-warning: #f4b400;
  --color-danger: #ef4444;
  --color-info: #3b82f6;

  --gradient-warm: linear-gradient(135deg, #ffe8d8, #fff9f3 50%, #f8fafc);
  --gradient-card: linear-gradient(135deg, rgba(255, 255, 255, 0.88), rgba(255, 255, 255, 0.98));
  --gradient-card-dark: linear-gradient(135deg, rgba(30, 41, 59, 0.92), rgba(15, 23, 42, 0.96));
  --glass-blur: blur(18px);

  --shadow-soft: 0 30px 80px -35px rgba(15, 23, 42, 0.55);
  --shadow-card: 0 25px 60px rgba(15, 23, 42, 0.15);
  --shadow-card-strong: 0 35px 75px rgba(15, 23, 42, 0.25);

  --radius-xs: 0.35rem;
  --radius-sm: 0.65rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-pill: 999px;

  --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 0.15s ease-out;

  --spacing-xs: 0.35rem;
  --spacing-sm: 0.65rem;
  --spacing-md: 1.25rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;
  --spacing-xxxl: 6rem;

  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-sm: 0.9rem;
  --font-size-md: 1rem;
  --font-size-lg: 1.2rem;
  --font-size-xl: 1.5rem;
  --font-size-xxl: 2rem;

  /* AdMob e Safe Area - ajustados dinamicamente via JavaScript */
  --admob-banner-height: 0px;
  --safe-area-bottom: 0px;
}

body[data-theme="dark"] {
  --color-surface: #0f172a;
  --color-surface-muted: rgba(15, 23, 42, 0.85);
  --color-background: #020817;
  --color-background-strong: #0f172a;
  --color-text: #f8fafc;
  --color-text-light: #94a3b8;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-strong: rgba(255, 255, 255, 0.16);
  --gradient-warm: linear-gradient(120deg, #0f172a, #1e293b 55%, #020617);
  --gradient-card: var(--gradient-card-dark);
  --shadow-card: 0 25px 50px rgba(0, 0, 0, 0.45);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-family);
  font-size: var(--font-size-md);
  line-height: 1.6;
  color: var(--color-text);
  background: var(--gradient-warm);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  transition: background 0.4s ease, color 0.3s ease;
}

body::before,
body::after {
  content: '';
  position: fixed;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.45;
  z-index: -1;
  transition: opacity var(--transition-base);
}

body::before {
  top: -130px;
  right: -120px;
  background: radial-gradient(circle, rgba(249, 115, 22, 0.45), transparent 70%);
}

body::after {
  bottom: -160px;
  left: -160px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.35), transparent 70%);
}

body[data-theme="dark"]::before,
body[data-theme="dark"]::after {
  opacity: 0.2;
}

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

button {
  font: inherit;
}

/* -----------------------------------------------------------------------
   Layout
------------------------------------------------------------------------ */
.app-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-lg) calc(120px + var(--spacing-xl) + 60px);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  min-height: 100vh;
}

.header {
  position: sticky;
  top: var(--spacing-sm);
  z-index: 10;
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  background: rgba(255, 255, 255, 0.65);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
  backdrop-filter: var(--glass-blur);
}

body[data-theme="dark"] .header {
  background: rgba(15, 23, 42, 0.65);
}

.header__content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-sm);
  min-width: 0;
  width: 100%;
}

.header__title {
  font-size: 1.5rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  white-space: nowrap;
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}

.header__controls {
  display: flex;
  gap: var(--spacing-xs);
  flex-shrink: 0;
}

.header__logo {
  height: 2.8rem;
  width: auto;
  object-fit: contain;
  animation: float 3.2s ease-in-out infinite;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
  flex-shrink: 0;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.hero {
  margin-top: var(--spacing-md);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-soft);
  backdrop-filter: var(--glass-blur);
}

body[data-theme="dark"] .hero {
  background: rgba(15, 23, 42, 0.8);
}

.hero__content {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.hero__logo-wrapper {
  flex-shrink: 0;
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  background: rgba(249, 115, 22, 0.12);
  box-shadow: inset 0 0 25px rgba(249, 115, 22, 0.15);
}

.hero__logo {
  width: 120px;
  height: auto;
  display: block;
}

.hero__text {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.hero__tagline {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-primary-strong);
  margin: 0;
}

.hero__description {
  margin: 0;
  color: var(--color-text-light);
  font-size: 1.05rem;
  max-width: 640px;
}

.hero__cta {
  margin-top: var(--spacing-xs);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.75rem 1.4rem;
  border-radius: var(--radius-pill);
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
  box-shadow: 0 12px 30px rgba(249, 115, 22, 0.35);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.hero__cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 40px rgba(249, 115, 22, 0.45);
}

.hero__cta span {
  font-size: 1.2rem;
}

.main {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-lg);
}

.section {
  margin: 0;
  animation: fadeUp 0.45s ease both;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(22px); }
  to { opacity: 1; transform: translateY(0); }
}

.section__title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.section__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

/* -----------------------------------------------------------------------
   Cards
------------------------------------------------------------------------ */
.card {
  position: relative;
  background: var(--gradient-card);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  backdrop-filter: var(--glass-blur);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-fast);
}

.card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(249, 115, 22, 0.45), rgba(59, 130, 246, 0.35));
  -webkit-mask:
    linear-gradient(#000, #000) content-box,
    linear-gradient(#000, #000);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-strong);
  border-color: rgba(249, 115, 22, 0.18);
}

.card:hover::before {
  opacity: 1;
}

/* -----------------------------------------------------------------------
   Buttons
------------------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: 0.75rem 1.4rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-weight: 600;
  font-size: var(--font-size-md);
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
  min-height: 44px;
  background: rgba(15, 23, 42, 0.05);
  color: var(--color-text);
}

.btn:focus-visible {
  outline: 2px solid rgba(59, 130, 246, 0.6);
  outline-offset: 2px;
}

.btn--primary {
  background: linear-gradient(120deg, var(--color-primary), var(--color-primary-strong));
  color: #fff;
  box-shadow: 0 16px 30px rgba(249, 115, 22, 0.28);
}

.btn--primary:hover {
  transform: translateY(-2px) scale(1.01);
}

.btn--secondary {
  background: rgba(59, 130, 246, 0.08);
  border-color: rgba(59, 130, 246, 0.25);
  color: var(--color-primary-strong);
}

.btn--icon {
  width: 38px;
  height: 38px;
  border-radius: 999px;
  padding: 0;
  background: rgba(15, 23, 42, 0.08);
  flex-shrink: 0;
}

.btn--icon .theme-icon,
.btn--icon .lang-icon {
  font-size: 1.1rem;
}

.btn--small {
  padding: 0.45rem 0.9rem;
  font-size: var(--font-size-sm);
}

.btn--full {
  width: 100%;
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  box-shadow: none;
}

.btn__icon {
  font-size: 1.1rem;
}

.btn__label {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

/* -----------------------------------------------------------------------
   Forms & Inputs
------------------------------------------------------------------------ */
.form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.form__group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.form__label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
}

.input,
.input--textarea,
.input--select {
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.8);
  padding: 0.85rem 1rem;
  font-size: var(--font-size-md);
  color: var(--color-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  min-height: 44px;
}

body[data-theme="dark"] .input,
body[data-theme="dark"] .input--textarea,
body[data-theme="dark"] .input--select {
  background: rgba(15, 23, 42, 0.85);
}

.input:focus,
.input--textarea:focus,
.input--select:focus {
  outline: none;
  border-color: rgba(249, 115, 22, 0.65);
  box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.2);
  background: rgba(255, 255, 255, 0.98);
}

.input--select {
  appearance: none;
  padding-right: 2.5rem;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24'%3e%3cpath stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' d='M6 9l6 6 6-6'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 0.9rem center;
  background-size: 1rem;
}

.input--textarea {
  min-height: 120px;
  resize: vertical;
}

.input-group {
  position: relative;
}

.input-group__suffix {
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-light);
  font-weight: 600;
}

.input--number {
  text-align: right;
}

.form__error {
  min-height: 1rem;
  font-size: 0.8rem;
  color: var(--color-danger);
  font-weight: 600;
}

.form__actions {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: flex-end;
  flex-wrap: wrap;
}

/* -----------------------------------------------------------------------
   Pet area
------------------------------------------------------------------------ */
.pet-selector {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.pet-form {
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
  animation: growDown 0.35s ease;
}

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

.pet-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  background: rgba(59, 130, 246, 0.08);
  border: 1px dashed rgba(59, 130, 246, 0.35);
  margin-bottom: var(--spacing-md);
}

.pet-info__avatar {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: linear-gradient(135deg, #f97316, #fb923c);
  display: grid;
  place-items: center;
  font-size: 1.8rem;
  color: #fff;
}

.pet-info__name {
  font-size: var(--font-size-lg);
  font-weight: 600;
}

.pet-info__meta {
  font-size: 0.95rem;
  color: var(--color-text-light);
}

.pets-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.pet-card {
  background: var(--gradient-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  padding: var(--spacing-md);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.pet-card[data-clickable="true"] {
  cursor: pointer;
}

.pet-card[data-clickable="true"]:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.pet-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(249, 115, 22, 0.05), transparent);
  opacity: 0;
  transition: opacity var(--transition-fast);
  pointer-events: none;
  z-index: 0;
}

.pet-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.pet-card:hover::before {
  opacity: 1;
}

.pet-card__header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
  position: relative;
  z-index: 1;
}

.pet-card__avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, #f97316, #fb923c);
  display: grid;
  place-items: center;
  font-size: 1.5rem;
  color: #fff;
  flex-shrink: 0;
}

.pet-card__info {
  flex: 1;
  min-width: 0;
}

.pet-card__name {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 0.2rem 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pet-card__meta {
  font-size: 0.85rem;
  color: var(--color-text-light);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pet-card__actions {
  display: flex;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-sm);
  padding-top: var(--spacing-sm);
  border-top: 1px solid var(--color-border);
  position: relative;
  z-index: 1;
}

.pet-card__btn {
  flex: 1;
  padding: 0.5rem;
  border: none;
  border-radius: var(--radius-xs);
  background: transparent;
  color: var(--color-text-light);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  position: relative;
  z-index: 2;
}

.pet-card__btn:hover {
  background: var(--color-background);
  color: var(--color-text);
}

.pet-card__btn--edit:hover {
  color: var(--color-info);
}

.pet-card__btn--delete:hover {
  color: var(--color-danger);
}

.pet-card__btn-icon {
  font-size: 1rem;
}

/* -----------------------------------------------------------------------
   Chart
------------------------------------------------------------------------ */
.chart-container {
  position: relative;
  height: 360px;
  background: rgba(15, 23, 42, 0.04);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

#weightChart {
  width: 100%;
  height: 100%;
  display: block;
}

.chart-loading,
.chart-empty {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  background: rgba(255, 255, 255, 0.9);
}

body[data-theme="dark"] .chart-loading,
body[data-theme="dark"] .chart-empty {
  background: rgba(2, 8, 23, 0.85);
}

.chart-legend {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

.legend-color {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.legend-color--good { background: var(--color-success); }
.legend-color--warning { background: var(--color-warning); }
.legend-color--danger { background: var(--color-danger); }

/* -----------------------------------------------------------------------
   Statistics
------------------------------------------------------------------------ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--spacing-sm);
}

.stat-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--color-border);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

body[data-theme="dark"] .stat-card {
  background: rgba(15, 23, 42, 0.85);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.15);
}

.stat-card__icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: rgba(249, 115, 22, 0.12);
  color: var(--color-primary-strong);
  font-size: 1.3rem;
}

.stat-card__title {
  margin: 0;
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
  letter-spacing: 0.02em;
}

.stat-card__value {
  margin: 0;
  font-size: var(--font-size-lg);
  font-weight: 700;
}

.trend-analysis {
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  border: 1px solid var(--color-border);
  background: rgba(249, 115, 22, 0.08);
}

.trend-indicator {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
}

.trend-indicator__icon {
  width: 70px;
  height: 70px;
  border-radius: 20px;
  background: #fff;
  display: grid;
  place-items: center;
  font-size: 2rem;
  box-shadow: inset 0 0 15px rgba(249, 115, 22, 0.25);
}

body[data-theme="dark"] .trend-indicator__icon {
  background: rgba(15, 23, 42, 0.85);
}

.trend-indicator__status {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
}

.trend-indicator__description {
  margin: 0.15rem 0 0;
  color: var(--color-text-light);
}

/* -----------------------------------------------------------------------
   History list
------------------------------------------------------------------------ */
.history-container {
  min-height: 260px;
  position: relative;
}

.history-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.history-item {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: var(--spacing-sm);
  align-items: center;
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.85);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

body[data-theme="dark"] .history-item {
  background: rgba(15, 23, 42, 0.85);
}

.history-item:hover {
  transform: translateX(6px);
  box-shadow: 0 16px 24px rgba(15, 23, 42, 0.15);
}

.history-item__info {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.history-item__weight {
  font-size: var(--font-size-lg);
  font-weight: 700;
}

.history-item__date,
.history-item__notes {
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
}

.history-item__trend {
  font-weight: 600;
  font-size: var(--font-size-sm);
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.history-item__trend--up { color: var(--color-danger); }
.history-item__trend--down { color: var(--color-success); }
.history-item__trend--stable { color: var(--color-text-light); }

.history-item__actions {
  display: flex;
  gap: 0.4rem;
}

/* -----------------------------------------------------------------------
   Navigation
------------------------------------------------------------------------ */
.navigation {
  position: fixed;
  left: var(--spacing-lg);
  right: var(--spacing-lg);
  /* Ajuste dinâmico para banner AdMob e safe area - será sobrescrito via JS se necessário */
  bottom: calc(var(--spacing-lg) + var(--admob-banner-height, 0px) + var(--safe-area-bottom, 0px));
  display: flex;
  gap: var(--spacing-sm);
  padding: 0.5rem;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-soft);
  backdrop-filter: var(--glass-blur);
  z-index: 20;
  transition: bottom 0.3s ease;
}

body[data-theme="dark"] .navigation {
  background: rgba(2, 8, 23, 0.85);
}

.nav-item {
  flex: 1;
  border: none;
  background: transparent;
  color: var(--color-text-light);
  font-weight: 600;
  padding: 0.6rem 1rem;
  border-radius: var(--radius-pill);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  cursor: pointer;
  transition: color var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);
}

.nav-item__icon {
  font-size: 1.2rem;
}

.nav-item.nav-item--active {
  background: rgba(249, 115, 22, 0.12);
  color: var(--color-primary-strong);
  transform: translateY(-2px);
}

.nav-item:hover {
  background: rgba(249, 115, 22, 0.08);
  color: var(--color-primary-strong);
}

.nav-item__text {
  font-size: 0.9rem;
}

/* -----------------------------------------------------------------------
   Toasts
------------------------------------------------------------------------ */
.toast-container {
  position: fixed;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  z-index: 30;
}

.toast {
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  color: #fff;
  font-weight: 600;
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.25);
  animation: slideIn 0.35s ease, fadeOut 0.4s ease 2.6s forwards;
  position: relative;
  overflow: hidden;
}

.toast::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  height: 4px;
  width: 100%;
  background: rgba(255, 255, 255, 0.5);
  animation: shrink 3s linear forwards;
}

.toast--success { background: linear-gradient(120deg, #22c55e, #16a34a); }
.toast--error { background: linear-gradient(120deg, #ef4444, #dc2626); }
.toast--warning { background: linear-gradient(120deg, #f59e0b, #d97706); }
.toast--info { background: linear-gradient(120deg, #3b82f6, #2563eb); }

@keyframes slideIn {
  from { opacity: 0; transform: translateX(80px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes fadeOut {
  to { opacity: 0; transform: translateX(40px); }
}

@keyframes shrink {
  to { width: 0; }
}

/* -----------------------------------------------------------------------
   Modal
------------------------------------------------------------------------ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.55);
  display: grid;
  place-items: center;
  padding: var(--spacing-lg);
  z-index: 40;
}

.modal {
  width: min(480px, 90vw);
  background: var(--gradient-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card-strong);
  overflow: hidden;
  animation: scaleIn 0.35s ease;
}

@keyframes scaleIn {
  from { transform: scale(0.92); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.modal__header,
.modal__content,
.modal__actions {
  padding: var(--spacing-md) var(--spacing-lg);
}

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--color-border);
}

.modal__title {
  margin: 0;
  font-size: var(--font-size-lg);
}

.modal__close {
  border: none;
  background: rgba(15, 23, 42, 0.05);
  border-radius: var(--radius-pill);
  width: 40px;
  height: 40px;
  font-size: 1.2rem;
  cursor: pointer;
}

.modal__message {
  margin: 0;
  color: var(--color-text-light);
}

.modal__actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-sm);
  border-top: 1px solid var(--color-border);
}

/* -----------------------------------------------------------------------
   Loading overlay
------------------------------------------------------------------------ */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.65);
  display: grid;
  place-items: center;
  z-index: 50;
}

.loading-content {
  text-align: center;
  color: #fff;
}

.spinner {
  width: 60px;
  height: 60px;
  border: 6px solid rgba(255, 255, 255, 0.2);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-text {
  margin-top: 1rem;
  font-weight: 600;
}

/* -----------------------------------------------------------------------
   Footer
------------------------------------------------------------------------ */
.footer {
  display: block;
  text-align: center;
  padding: var(--spacing-lg) var(--spacing-lg);
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
  margin-top: auto;
  margin-bottom: var(--spacing-xxxl);
  width: 100%;
}

.footer__link {
  color: var(--color-primary);
  font-weight: 600;
  text-decoration: none;
}

.footer__link:hover {
  text-decoration: underline;
}

/* -----------------------------------------------------------------------
   Empty states
------------------------------------------------------------------------ */
.empty-state {
  text-align: center;
  padding: var(--spacing-lg);
}

.empty-state__icon {
  font-size: 3.5rem;
  margin-bottom: var(--spacing-sm);
}

.empty-state__title {
  margin: 0 0 0.35rem;
  font-size: var(--font-size-lg);
}

.empty-state__description {
  margin: 0;
  color: var(--color-text-light);
}

/* -----------------------------------------------------------------------
   Scrollbar
------------------------------------------------------------------------ */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: rgba(15, 23, 42, 0.05);
}

::-webkit-scrollbar-thumb {
  background: rgba(249, 115, 22, 0.45);
  border-radius: 999px;
}

/* -----------------------------------------------------------------------
   Responsive
------------------------------------------------------------------------ */
@media (max-width: 1024px) {
  .main {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .app-container {
    padding: var(--spacing-lg) var(--spacing-md) calc(90px + var(--spacing-md));
  }

  .header {
    position: static;
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .header__content {
    gap: var(--spacing-xs);
  }

  .header__title {
    font-size: 1.3rem;
    gap: 0.4rem;
    flex-shrink: 1;
  }

  .header__logo {
    height: 2.4rem;
  }

  .btn--icon {
    width: 36px;
    height: 36px;
  }

  .hero {
    padding: var(--spacing-md);
  }

  .hero__content {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-md);
  }

  .hero__logo {
    width: 90px;
  }

  .hero__description {
    font-size: 1rem;
  }

  .navigation {
    left: var(--spacing-md);
    right: var(--spacing-md);
    /* Ajuste dinâmico para banner AdMob e safe area em mobile */
    bottom: calc(var(--spacing-md) + var(--admob-banner-height, 0px) + var(--safe-area-bottom, 0px));
  }

  .history-item {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .header {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
  }

  .header__content {
    gap: 0.5rem;
  }

  .header__title {
    font-size: 1.1rem;
    gap: 0.35rem;
    flex: 1;
    min-width: 0;
    max-width: calc(100% - 80px); /* Reserva espaço para os botões */
  }

  .header__logo {
    height: 2.2rem;
  }

  .header__controls {
    gap: 0.25rem;
  }

  .btn--icon {
    width: 32px;
    height: 32px;
    padding: 0.4rem;
  }

  .btn--icon .theme-icon,
  .btn--icon .lang-icon {
    font-size: 0.9rem;
  }

  .nav-item__text {
    display: none;
  }

  .nav-item {
    padding: 0.55rem;
  }

  .hero {
    padding: var(--spacing-sm);
  }

  .hero__content {
    gap: var(--spacing-sm);
  }

  .hero__tagline {
    font-size: 1.2rem;
  }

  .hero__logo {
    width: 70px;
  }
}

@media (max-width: 400px) {
  .header {
    padding: 0.5rem var(--spacing-xs);
  }

  .header__title {
    font-size: 1rem;
    gap: 0.3rem;
    max-width: calc(100% - 70px); /* Menos espaço para botões menores */
  }

  .header__logo {
    height: 2rem;
  }

  .btn--icon {
    width: 30px;
    height: 30px;
    padding: 0.35rem;
  }

  .btn--icon .theme-icon,
  .btn--icon .lang-icon {
    font-size: 0.85rem;
  }

  .hero__tagline {
    font-size: 1.05rem;
  }

  .hero__description {
    font-size: 0.95rem;
  }
}

@media (max-width: 360px) {
  .header__title {
    font-size: 0.95rem;
    max-width: calc(100% - 65px);
  }

  .header__logo {
    height: 1.8rem;
  }

  .btn--icon {
    width: 28px;
    height: 28px;
    padding: 0.3rem;
  }

  .hero__logo {
    width: 60px;
  }
}

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

@media print {
  body {
    background: #fff;
  }

  .navigation,
  .header,
  .footer,
  .toast-container,
  .loading-overlay,
  .modal-overlay {
    display: none !important;
  }

  .app-container {
    padding: 0;
  }

  .card {
    box-shadow: none;
  }
}

/* -----------------------------------------------------------------------
   Icon Styles (Font Awesome)
------------------------------------------------------------------------ */
[data-icon] i,
.btn__icon i,
.nav-item__icon i,
.pet-card__btn-icon i,
.pet-info__icon i,
.stat-card__icon i,
.empty-state__icon i,
.trend-indicator__icon i,
.theme-icon i,
.lang-icon i {
  display: inline-block;
  vertical-align: middle;
}

.btn__icon,
.nav-item__icon,
.pet-card__btn-icon,
.theme-icon,
.lang-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn__icon i,
.nav-item__icon i,
.pet-card__btn-icon i,
.theme-icon i,
.lang-icon i {
  font-size: 1.1em;
}

.pet-info__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}

.pet-info__icon i {
  font-size: 2.5rem;
}

.stat-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
}

.stat-card__icon i {
  font-size: 1.8rem;
}

.empty-state__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 4rem;
  height: 4rem;
  margin-bottom: var(--spacing-md);
}

.empty-state__icon i {
  font-size: 3rem;
}

.trend-indicator__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
}

.trend-indicator__icon i {
  font-size: 1.8rem;
}