/* ============================================
   GUIA DE VIAGEM — Costa do Descobrimento
   Design System & Component Styles
   ============================================ */

/* --- Custom Properties --- */
:root {
  /* Primária — Oceano */
  --color-primary-50: #f0f9ff;
  --color-primary-100: #e0f2fe;
  --color-primary-200: #bae6fd;
  --color-primary-300: #7dd3fc;
  --color-primary-500: #0ea5e9;
  --color-primary-600: #0284c7;
  --color-primary-700: #0369a1;
  --color-primary-800: #075985;
  --color-primary-900: #0c4a6e;

  /* Secundária — Areia/Dourado */
  --color-sand-50: #fefce8;
  --color-sand-100: #fef9c3;
  --color-sand-200: #fef08a;
  --color-sand-500: #eab308;
  --color-sand-700: #a16207;

  /* Acento — Natureza */
  --color-nature-50: #f0fdf4;
  --color-nature-100: #dcfce7;
  --color-nature-500: #22c55e;
  --color-nature-700: #15803d;

  /* Neutros */
  --color-bg: #faf9f7;
  --color-surface: #ffffff;
  --color-text: #1c1917;
  --color-text-secondary: #57534e;
  --color-text-muted: #78716c;
  --color-text-divider: #a8a29e;
  --color-border: #e7e5e4;
  --color-border-light: #f5f5f4;

  /* Alertas */
  --color-warning: #f59e0b;
  --color-warning-bg: #fffbeb;
  --color-danger: #ef4444;
  --color-danger-bg: #fef2f2;
  --color-tip: #06b6d4;
  --color-tip-bg: #ecfeff;

  /* Maré */
  --color-tide-star2: #f59e0b;
  --color-tide-star2-bg: #fffbeb;
  --color-tide-star1: #eab308;
  --color-tide-star1-bg: #fefce8;
  --color-tide-green: #22c55e;
  --color-tide-green-bg: #f0fdf4;
  --color-tide-yellow: #facc15;
  --color-tide-yellow-bg: #fefce8;
  --color-tide-red: #ef4444;
  --color-tide-red-bg: #fef2f2;

  /* Layout */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Card internals */
  --card-padding: 20px;
  --card-radius: 14px;
  --card-gap: 16px;
  --accordion-gap: 12px;

  /* Elevation */
  --shadow-card: 0 2px 8px rgba(0,0,0,0.06), 0 4px 12px rgba(0,0,0,0.04);
  --shadow-card-hover: 0 4px 16px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.04);
  --shadow-elevated: 0 6px 20px rgba(0,0,0,0.10), 0 2px 6px rgba(0,0,0,0.05);
  --shadow-header: 0 1px 3px rgba(0,0,0,0.06);

  /* Tab bar */
  --tab-bar-border: rgba(0,0,0,0.10);
  --tab-active-pill: var(--color-primary-50);

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;

  /* Typography */
  --font-display: 'Google Sans', 'Product Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --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;

  /* Typographic Scale (5-level) */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;

  /* Transitions */
  --transition-fast: 150ms ease-out;
  --transition-normal: 300ms ease-out;
  --transition-accordion: 320ms ease-out;
  --transition-slide: 300ms;
  --transition-slow: 500ms ease;
}

/* --- Font Faces (Google Travel: Google Sans + Roboto) --- */

/* --- Reset --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

/* --- App Container --- */
#app {
  max-width: 480px;
  margin: 0 auto;
  padding-bottom: calc(64px + env(safe-area-inset-bottom, 0px));
  min-height: 100dvh;
}

/* --- Header --- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg);
  color: var(--color-text);
  padding: var(--spacing-sm) var(--spacing-md);
  max-height: 72px;
  box-shadow: var(--shadow-header);
}

.header__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.header__subtitle {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--spacing-xs);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.header__badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--color-primary-500);
  color: white;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: var(--text-xs);
}

/* --- Tab Bar (Bottom Navigation) --- */
.tab-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background: var(--color-surface);
  border-top: 1px solid var(--tab-bar-border);
  display: flex;
  justify-content: space-around;
  align-items: center;
  padding: var(--spacing-sm) 0 calc(var(--spacing-sm) + env(safe-area-inset-bottom, 0px));
}

.tab-bar__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: var(--spacing-sm) var(--spacing-md);
  min-width: 64px;
  min-height: 44px;
  position: relative;
  border-radius: 12px;
  transition: color 250ms ease-out, background 250ms ease-out, opacity 250ms ease-out;
  color: var(--color-text-muted);
  font-size: var(--text-xs);
}

.tab-bar__item:not(.tab-bar__item--active) {
  opacity: 0.5;
}

.tab-bar__item:active {
  transform: scale(0.95);
}

.tab-bar__item--active {
  color: var(--color-primary-500);
  background: var(--tab-active-pill);
  opacity: 1;
}

.tab-bar__icon {
  width: 24px;
  height: 24px;
  line-height: 1;
}

.tab-bar__icon svg {
  width: 24px;
  height: 24px;
  display: block;
}

.tab-bar__label {
  font-weight: 500;
}

.tab-bar__item--active .tab-bar__label {
  font-weight: 600;
  color: var(--color-primary-500);
}

/* --- Tab Content --- */
.tab-content {
  display: none;
  padding: var(--spacing-md);
}

.tab-content--active {
  display: block;
  animation: fadeIn 150ms ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* --- Accordion --- */
.accordion {
  display: flex;
  flex-direction: column;
  gap: var(--accordion-gap, 12px);
}

.accordion__item {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  margin-bottom: 0;
  border-left: 3px solid transparent;
  transition: border-left-color var(--transition-fast);
}

.accordion__header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  cursor: pointer;
  min-height: 56px;
  transition: background var(--transition-fast), transform var(--transition-fast);
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.accordion__header:active {
  background: var(--color-primary-50);
  transform: scale(0.98);
}

.accordion__header[aria-expanded="true"] {
  background: var(--color-primary-50);
  border-bottom: 1px solid var(--color-border-light);
}

.accordion__item:has(.accordion__header[aria-expanded="true"]) {
  border-left-color: var(--color-primary-500);
  box-shadow: var(--shadow-elevated);
}

.accordion__chevron {
  font-size: var(--text-sm);
  transition: transform var(--transition-fast);
  flex-shrink: 0;
  opacity: 0.5;
}

.accordion__header[aria-expanded="true"] .accordion__chevron {
  transform: rotate(180deg);
}

.accordion__day-number {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: var(--text-sm);
  color: #ffffff;
  background: var(--color-primary-500);
  padding: 4px 10px;
  border-radius: 20px;
  flex-shrink: 0;
  min-width: 36px;
  text-align: center;
  white-space: nowrap;
}

.accordion__day-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.accordion__day-date {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  font-family: var(--font-body);
  line-height: 1.4;
}

.accordion__day-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--font-size-base);
  color: var(--color-text);
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.accordion__tide-badge {
  flex-shrink: 0;
  font-size: var(--text-xs);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  margin-left: auto;
}

.accordion__tide-badge--star2 { background: var(--color-tide-star2-bg); color: #92400e; }
.accordion__tide-badge--star1 { background: var(--color-tide-star1-bg); color: #854d0e; }
.accordion__tide-badge--green { background: var(--color-tide-green-bg); color: #166534; }
.accordion__tide-badge--yellow { background: var(--color-tide-yellow-bg); color: #854d0e; }
.accordion__tide-badge--red { background: var(--color-tide-red-bg); color: #991b1b; }

.accordion__body {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-accordion), opacity var(--transition-accordion);
  opacity: 0;
}

.accordion__body--expanded {
  max-height: 5000px;
  opacity: 1;
}

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

/* --- Tide Alert --- */
.tide-alert {
  position: relative;
  top: auto;
  z-index: auto;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--text-sm);
  font-weight: 500;
  border: 1px solid transparent;
}

.tide-alert--star2 { background: var(--color-tide-star2-bg); border-color: #fde68a; color: #92400e; }
.tide-alert--star1 { background: var(--color-tide-star1-bg); border-color: #fef08a; color: #854d0e; }
.tide-alert--green { background: var(--color-tide-green-bg); border-color: #bbf7d0; color: #166534; }
.tide-alert--yellow { background: var(--color-tide-yellow-bg); border-color: #fef08a; color: #854d0e; }
.tide-alert--red { background: var(--color-tide-red-bg); border-color: #fecaca; color: #991b1b; }

.tide-alert__icon {
  font-size: var(--text-lg);
  flex-shrink: 0;
}

.tide-alert__text {
  flex: 1;
}

.tide-alert__cta {
  font-weight: 700;
  display: block;
  margin-top: 2px;
}

/* --- Period Divider --- */
.period-divider {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin: var(--spacing-lg) 0 var(--spacing-md);
  color: var(--color-text-divider, #a8a29e);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.period-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

.period-divider:first-child {
  margin-top: 0;
}

/* --- Activity Card --- */
.activity-card {
  background: var(--color-surface);
  border-radius: var(--card-radius);
  padding: var(--card-padding);
  margin-bottom: var(--card-gap);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.activity-card:active {
  transform: scale(0.98);
}

.activity-card__header {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
}

.activity-card__icon {
  font-size: 1.5rem;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 2px;
}

.activity-card__main {
  flex: 1;
  min-width: 0;
}

.activity-card__time {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: 500;
}

.activity-card__title {
  font-weight: 600;
  font-size: var(--text-base);
  line-height: 1.3;
  margin-top: 2px;
}

.activity-card__tide-indicator {
  flex-shrink: 0;
  font-size: var(--text-xs);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  align-self: flex-start;
}

.activity-card__description {
  margin-top: var(--spacing-sm);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.activity-card__price {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: var(--spacing-sm);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-nature-700);
  background: var(--color-nature-50);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

/* --- Tip / Warning Blocks --- */
.tip-block, .warning-block {
  margin-top: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  line-height: 1.5;
  border-left: 3px solid;
}

.tip-block {
  background: var(--color-tip-bg);
  border-left-color: var(--color-tip);
  color: #155e75;
}

.warning-block {
  background: var(--color-warning-bg);
  border-left-color: var(--color-warning);
  color: #92400e;
}

/* --- Links Bar --- */
.links-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
}

.link-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: var(--spacing-sm) var(--spacing-md);
  min-height: 44px;
  min-width: 44px;
  border-radius: var(--radius-xl);
  font-size: var(--text-sm);
  font-weight: 500;
  background: var(--color-primary-50);
  color: var(--color-primary-700);
  transition: background var(--transition-fast), transform var(--transition-fast);
  text-decoration: none;
}

.link-btn:active {
  background: var(--color-primary-100);
  transform: scale(0.95);
}

.link-btn--instagram {
  background: #fdf2f8;
  color: #9d174d;
}

.link-btn--instagram:active {
  background: #fce7f3;
}

/* --- Day Options Toggle (Day 6 & 11) --- */
.day-options {
  margin-bottom: var(--spacing-md);
}

.day-options__tabs {
  display: flex;
  gap: var(--spacing-xs);
  background: var(--color-border-light);
  padding: 3px;
  border-radius: var(--radius-sm);
}

.day-options__tab {
  flex: 1;
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: center;
  border-radius: 6px;
  font-size: var(--text-sm);
  font-weight: 500;
  transition: background var(--transition-fast), color var(--transition-fast);
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.day-options__tab--active {
  background: var(--color-surface);
  color: var(--color-primary-700);
  box-shadow: var(--shadow-card);
}

.day-options__content {
  display: none;
}

.day-options__content--active {
  display: block;
}

/* --- Info Section --- */
.info-section {
  margin-bottom: var(--spacing-lg);
}

.info-section__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.info-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-card);
  margin-bottom: var(--spacing-md);
}

.info-card__row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--color-border-light);
  font-size: var(--text-sm);
}

.info-card__row:last-child {
  border-bottom: none;
}

.info-card__label {
  color: var(--color-text-muted);
  font-weight: 500;
  flex-shrink: 0;
}

.info-card__value {
  text-align: right;
  font-weight: 500;
}

/* --- Flights Table --- */
.flights-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.flights-table th {
  text-align: left;
  padding: var(--spacing-sm);
  color: var(--color-text-muted);
  font-weight: 600;
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  border-bottom: 2px solid var(--color-border);
}

.flights-table td {
  padding: var(--spacing-sm);
  border-bottom: 1px solid var(--color-border-light);
}

.flights-table tr:last-child td {
  border-bottom: none;
}

.flights-table__connection {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-style: italic;
}

/* --- Tide Table --- */
.tide-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.tide-table th {
  text-align: left;
  padding: var(--spacing-sm);
  color: var(--color-text-muted);
  font-weight: 600;
  font-size: var(--text-xs);
  text-transform: uppercase;
  border-bottom: 2px solid var(--color-border);
}

.tide-table td {
  padding: var(--spacing-sm);
  border-bottom: 1px solid var(--color-border-light);
}

.tide-table tr:nth-child(even) {
  background: var(--color-border-light);
}

.tide-table tr.tide-table__row--today {
  background: var(--color-primary-50);
  font-weight: 600;
}

.tide-table__quality {
  display: inline-block;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-weight: 600;
}

/* --- Checklist --- */
.checklist {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.checklist__item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  min-height: 52px;
  cursor: pointer;
  transition: opacity var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
}

.checklist__item--checked {
  opacity: 0.6;
}

.checklist__item--checked .checklist__text {
  text-decoration: line-through;
}

.checklist__item--critical {
  border-left: 3px solid var(--color-warning);
}

.checklist__toggle {
  position: relative;
  width: 44px;
  height: 24px;
  background: var(--color-border);
  border-radius: 12px;
  flex-shrink: 0;
  transition: background var(--transition-fast);
}

.checklist__toggle::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  background: white;
  border-radius: 50%;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
  transition: transform var(--transition-fast);
}

.checklist__item--checked .checklist__toggle {
  background: var(--color-nature-500);
}

.checklist__item--checked .checklist__toggle::after {
  transform: translateX(20px);
}

.checklist__text {
  font-size: var(--text-sm);
  font-weight: 500;
  flex: 1;
}

/* --- Breakfast Note --- */
.breakfast-note {
  background: var(--color-sand-50);
  border: 1px solid var(--color-sand-200);
  border-radius: var(--radius-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  margin-bottom: var(--spacing-md);
  font-size: var(--text-sm);
  color: var(--color-sand-700);
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
}

/* --- Update Toast --- */
.update-toast {
  position: fixed;
  bottom: calc(72px + env(safe-area-inset-bottom, 0px));
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--color-primary-800);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  font-weight: 500;
  box-shadow: var(--shadow-elevated);
  z-index: 300;
  opacity: 0;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
  cursor: pointer;
}

.update-toast--visible {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* --- Responsive (Tablet 768px+) --- */
@media (min-width: 768px) {
  #app {
    max-width: 600px;
  }

  .info-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
  }

  .info-card__row {
    flex-direction: column;
    gap: 4px;
  }

  .info-card__value {
    text-align: left;
  }
}

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .accordion__body {
    transition: none;
  }
}

/* --- Day List --- */
.day-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* --- Day Card (Master View — inspired by Google Travel) --- */
.day-card {
  display: flex;
  flex-direction: row;
  align-items: stretch;
  background: var(--color-surface);
  border-radius: 16px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.06), 0 2px 8px rgba(0,0,0,0.04);
  min-height: 80px;
  cursor: pointer;
  overflow: hidden;
  isolation: isolate;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
}

.day-card:active {
  transform: scale(0.97);
  box-shadow: 0 2px 8px rgba(0,0,0,0.10);
}

.day-card--current {
  scroll-margin-top: 80px;
  scroll-margin-bottom: 80px;
}

/* Desktop hover — highlight follows pointer, clears current */
@media (hover: hover) {
  .day-list:hover .day-card--current:not(:hover) {
    background: var(--color-surface);
    box-shadow: 0 1px 4px rgba(0,0,0,0.06), 0 2px 8px rgba(0,0,0,0.04);
  }

  .day-list:hover .day-card--current:not(:hover) .day-card__thumbnail {
    background: linear-gradient(135deg, #e0f2fe 0%, #f0f9ff 100%);
    border-color: var(--color-border);
  }

  .day-list:hover .day-card--current:not(:hover) .day-card__day-number {
    color: var(--color-primary-700);
  }

  .day-list:hover .day-card--current:not(:hover) .day-card__weekday {
    color: var(--color-primary-600);
  }

  .day-card:hover {
    background: var(--color-primary-50);
    box-shadow: var(--shadow-card);
  }

  .day-card:hover .day-card__thumbnail {
    background: var(--color-primary-500);
    border-color: var(--color-primary-500);
  }

  .day-card:hover .day-card__day-number {
    color: #ffffff;
  }

  .day-card:hover .day-card__weekday {
    color: rgba(255, 255, 255, 0.9);
  }
}

.day-card--current {
  background: var(--color-primary-500);
  box-shadow: 0 2px 8px rgba(14, 165, 233, 0.15), 0 1px 3px rgba(0,0,0,0.06);
}

.day-card--current .day-card__body {
  background: var(--color-primary-50);
}

.day-card__thumbnail {
  width: 68px;
  min-width: 68px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  background: linear-gradient(135deg, #e0f2fe 0%, #f0f9ff 100%);
  padding: var(--spacing-sm);
}

/* Current day: thumbnail gets the primary accent */
.day-card--current .day-card__thumbnail {
  background: var(--color-primary-500);
}

.day-card--current .day-card__day-number {
  color: #ffffff;
}

.day-card--current .day-card__tide-badge {
  background: transparent;
  color: rgba(255, 255, 255, 0.9);
}

.day-card--current .day-card__weekday {
  color: rgba(255, 255, 255, 0.9);
}

.day-card__day-number {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--color-primary-700);
}

.day-card__weekday {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary-600);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-top: 2px;
}

.day-card__body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 2px;
  padding: 12px 16px;
  padding-right: 60px;
  position: relative;
}

.day-card__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--font-size-base);
  color: var(--color-text);
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.day-card__summary {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.day-card__tide-badge {
  position: absolute;
  top: 50%;
  right: 12px;
  transform: translateY(-50%);
  font-size: var(--text-xs);
  padding: 3px 8px;
  border-radius: 12px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 2px;
}

.day-card__tide-icon {
  width: 14px;
  height: 14px;
  display: inline-flex;
}

.day-card__tide-icon svg {
  width: 14px;
  height: 14px;
}

.day-card__tide-badge--star2 { background: var(--color-tide-star2-bg); color: #92400e; }
.day-card__tide-badge--star1 { background: var(--color-tide-star1-bg); color: #854d0e; }
.day-card__tide-badge--green { background: var(--color-tide-green-bg); color: #166534; }
.day-card__tide-badge--yellow { background: var(--color-tide-yellow-bg); color: #854d0e; }
.day-card__tide-badge--red { background: var(--color-tide-red-bg); color: #991b1b; }

/* --- Day Detail View --- */
.day-detail {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg);
  display: flex;
  flex-direction: column;
  z-index: 150;
  overflow: hidden;
}

.day-detail__hero {
  position: relative;
  width: 100%;
  min-height: 160px;
  background: linear-gradient(135deg, var(--color-primary-600) 0%, var(--color-primary-800) 60%, #0c4a6e 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--spacing-lg) var(--spacing-md) var(--spacing-md);
  flex-shrink: 0;
}

.day-detail__back-btn {
  position: absolute;
  top: var(--spacing-sm);
  left: var(--spacing-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  min-width: 44px;
  min-height: 44px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.3);
  color: #ffffff;
  flex-shrink: 0;
  transition: background var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.day-detail__back-btn:active {
  background: rgba(0, 0, 0, 0.5);
}

.day-detail__back-btn svg {
  width: 20px;
  height: 20px;
}

.day-detail__hero-day {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  color: rgba(255, 255, 255, 0.8);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.day-detail__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: #ffffff;
  line-height: 1.2;
}

.day-detail__content {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-lg) var(--spacing-md) calc(72px + env(safe-area-inset-bottom, 0px));
  -webkit-overflow-scrolling: touch;
}

/* Legacy nav hidden — replaced by hero */
.day-detail__nav {
  display: none;
}

/* Slide Transitions */
.day-detail--entering {
  transform: translateX(100%);
}

.day-detail--active {
  transform: translateX(0);
  transition: transform var(--transition-slide) ease-out;
}

.day-detail--exiting {
  transform: translateX(100%);
  transition: transform var(--transition-slide) ease-out;
}

/* --- Utilities --- */
.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;
}