/* ============================================
   LINUS — Habits & Streaks View
   Contribution grid · Streak badges · Category colours
   ============================================ */

/* =============================================
   CATEGORY COLOURS
   ============================================= */
:root {
  --habit-saude: #5BAD8A;
  --habit-mente: #8B7EC8;
  --habit-fitness: #E8956A;
  --habit-produtividade: #5B9BD5;
  --habit-grid-empty: #F0F1F5;
}

[data-theme="dark"] {
  --habit-grid-empty: #252540;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --habit-grid-empty: #252540;
  }
}

/* =============================================
   VIEW LAYOUT
   ============================================= */
.habits-view {
  padding: var(--space-lg);
  padding-bottom: calc(var(--nav-height) + var(--safe-bottom) + 100px);
}

.habits-header {
  margin-bottom: var(--space-xl);
}

.habits-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.habits-subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
}

.habits-streak-summary {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-xs);
}

.habits-streak-summary__icon {
  font-size: var(--text-xl);
}

.habits-streak-summary__text {
  font-size: var(--text-sm);
  color: var(--color-text);
  font-weight: var(--weight-medium);
}

.habits-streak-summary__highlight {
  color: var(--accent-peach);
  font-weight: var(--weight-bold);
}

/* =============================================
   HABITS LIST
   ============================================= */
.habits-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

/* =============================================
   HABIT CARD
   ============================================= */
.habit-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
  padding: var(--space-lg);
  transition:
    transform var(--transition-fast),
    box-shadow var(--transition-normal);
  animation: habitCardIn 400ms cubic-bezier(0.25, 0.46, 0.45, 0.94) both;
}

.habit-card:nth-child(1) { animation-delay: 0ms; }
.habit-card:nth-child(2) { animation-delay: 80ms; }
.habit-card:nth-child(3) { animation-delay: 160ms; }
.habit-card:nth-child(4) { animation-delay: 240ms; }
.habit-card:nth-child(5) { animation-delay: 320ms; }
.habit-card:nth-child(6) { animation-delay: 400ms; }

@keyframes habitCardIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.habit-card:active {
  transform: scale(0.985);
}

/* ---- Card Top Row ---- */
.habit-card__top {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.habit-card__check-wrap {
  flex-shrink: 0;
}

.habit-card__check {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--color-border);
  background: var(--bg-card);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 14px;
  color: var(--color-text-inverse);
  transition:
    background-color var(--transition-fast),
    border-color var(--transition-fast),
    transform var(--transition-spring);
  -webkit-tap-highlight-color: transparent;
}

.habit-card__check:active {
  transform: scale(0.85);
}

.habit-card__check--done {
  border-color: transparent;
  animation: habitCheckBounce 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Category-coloured checkboxes when done */
.habit-card--saude .habit-card__check--done { background: var(--habit-saude); }
.habit-card--mente .habit-card__check--done { background: var(--habit-mente); }
.habit-card--fitness .habit-card__check--done { background: var(--habit-fitness); }
.habit-card--produtividade .habit-card__check--done { background: var(--habit-produtividade); }

@keyframes habitCheckBounce {
  0% { transform: scale(1); }
  25% { transform: scale(1.3); }
  50% { transform: scale(0.9); }
  75% { transform: scale(1.1); }
  100% { transform: scale(1); }
}

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

.habit-card__name {
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.habit-card__category-emoji {
  font-size: var(--text-base);
}

.habit-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-top: 2px;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* ---- Streak Badge ---- */
.habit-streak-badge {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  white-space: nowrap;
}

.habit-streak-badge--active {
  background: rgba(232, 149, 106, 0.12);
  color: var(--accent-peach);
}

.habit-streak-badge--zero {
  background: var(--bg-secondary);
  color: var(--color-text-muted);
}

.habit-card__rate {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* =============================================
   CONTRIBUTION GRID (30-day mini calendar)
   ============================================= */
.habit-grid {
  display: grid;
  grid-template-columns: repeat(15, 1fr);
  gap: 3px;
  margin-top: var(--space-md);
}

.habit-grid__cell {
  aspect-ratio: 1;
  border-radius: 3px;
  background: var(--habit-grid-empty);
  transition: background-color var(--transition-fast);
  min-width: 0;
}

/* Filled cells use category color */
.habit-card--saude .habit-grid__cell--done { background: var(--habit-saude); }
.habit-card--mente .habit-grid__cell--done { background: var(--habit-mente); }
.habit-card--fitness .habit-grid__cell--done { background: var(--habit-fitness); }
.habit-card--produtividade .habit-grid__cell--done { background: var(--habit-produtividade); }

/* Today cell has a subtle ring */
.habit-grid__cell--today {
  box-shadow: inset 0 0 0 1.5px var(--color-text-muted);
}

/* =============================================
   EMPTY STATE
   ============================================= */
.habits-empty {
  text-align: center;
  padding: var(--space-5xl) var(--space-xl);
  color: var(--color-text-muted);
}

.habits-empty__icon {
  font-size: 56px;
  margin-bottom: var(--space-lg);
  opacity: 0.35;
}

.habits-empty__title {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
}

.habits-empty__text {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

/* =============================================
   FAB (Floating Action Button)
   ============================================= */
.habits-fab {
  position: fixed;
  bottom: calc(var(--nav-height) + var(--safe-bottom) + var(--space-xl));
  right: var(--space-xl);
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--color-linus-1), var(--color-linus-2));
  color: var(--color-text-inverse);
  font-size: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow-md), 0 4px 16px rgba(184, 169, 201, 0.35);
  z-index: 50;
  transition:
    transform var(--transition-spring),
    box-shadow var(--transition-normal);
  -webkit-tap-highlight-color: transparent;
  animation: habitsFabIn 400ms cubic-bezier(0.34, 1.56, 0.64, 1) 300ms both;
}

.habits-fab:active {
  transform: scale(0.88) rotate(90deg);
}

.habits-fab:hover {
  box-shadow: var(--shadow-lg), 0 6px 24px rgba(184, 169, 201, 0.45);
}

@keyframes habitsFabIn {
  0% {
    opacity: 0;
    transform: scale(0) rotate(-180deg);
  }
  100% {
    opacity: 1;
    transform: scale(1) rotate(0);
  }
}

/* =============================================
   MODAL OVERLAY (reuses tasks modal pattern)
   ============================================= */
.habits-modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-overlay);
  z-index: var(--z-overlay);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  animation: habitsOverlayIn 200ms ease both;
}

@keyframes habitsOverlayIn {
  0% { opacity: 0; }
  100% { opacity: 1; }
}

.habits-modal {
  background: var(--bg-card);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  padding: var(--space-2xl) var(--space-xl) var(--space-4xl);
  width: 100%;
  max-width: var(--container-max);
  box-shadow: var(--shadow-xl);
  animation: habitsModalUp 300ms cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

@keyframes habitsModalUp {
  0% {
    opacity: 0;
    transform: translateY(100%);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

.habits-modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-xl);
}

.habits-modal__title {
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  color: var(--color-text);
}

.habits-modal__close {
  width: 32px;
  height: 32px;
  border: none;
  background: var(--bg-secondary);
  border-radius: var(--radius-full);
  font-size: 16px;
  color: var(--color-text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast);
}

.habits-modal__close:hover {
  background: var(--color-border);
}

/* ---- Form fields (reuses tasks patterns) ---- */
.habits-form-group {
  margin-bottom: var(--space-lg);
}

.habits-form-label {
  display: block;
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-xs);
}

.habits-form-input,
.habits-form-select {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  border: 1.5px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  font-size: var(--text-base);
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--bg-card);
  outline: none;
  transition: border-color var(--transition-fast);
  -webkit-appearance: none;
  box-sizing: border-box;
}

.habits-form-input:focus,
.habits-form-select:focus {
  border-color: var(--color-linus-1);
}

.habits-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.habits-form-submit {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  background: linear-gradient(135deg, var(--color-linus-1), var(--color-linus-2));
  color: var(--color-text-inverse);
  border: none;
  border-radius: var(--radius-sm);
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  font-family: var(--font-body);
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-normal);
  margin-top: var(--space-xl);
}

.habits-form-submit:active {
  transform: scale(0.97);
}

.habits-form-submit:hover {
  box-shadow: var(--shadow-md);
}