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

/* Tokens visuais centralizados para manter consistencia no projeto todo. */
:root {
  --bg: #edf1f7;
  --surface: rgba(255, 255, 255, 0.86);
  --surface-strong: #ffffff;
  --surface-muted: #f5f7fb;
  --border: rgba(19, 35, 66, 0.1);
  --border-strong: rgba(19, 35, 66, 0.16);
  --text: #122033;
  --text-soft: #5f6d82;
  --primary: #1c4fa1;
  --primary-strong: #153d7e;
  --success: #158a57;
  --danger: #c14343;
  --shadow-lg: 0 28px 60px rgba(15, 30, 54, 0.14);
  --shadow-md: 0 18px 30px rgba(16, 24, 40, 0.08);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --container: 1120px;
}

html {
  scroll-behavior: smooth;
}

/* Fundo com profundidade leve para evitar aparencia chapada. */
body {
  margin: 0;
  min-height: 100vh;
  font-family: "Manrope", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(28, 79, 161, 0.16), transparent 28%),
    radial-gradient(circle at bottom right, rgba(21, 138, 87, 0.12), transparent 22%),
    linear-gradient(180deg, #f7f9fc 0%, var(--bg) 100%);
}

button,
input,
a {
  font: inherit;
}

button {
  cursor: pointer;
}

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

[hidden] {
  display: none !important;
}

.noscript-banner {
  padding: 12px 16px;
  background: #122033;
  color: #ffffff;
  text-align: center;
  font-size: 0.95rem;
}

/* Estrutura principal */
.page-shell {
  width: min(calc(100% - 32px), var(--container));
  margin: 0 auto;
  padding: 56px 0 72px;
}

.hero {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 28px;
  align-items: stretch;
  margin-bottom: 28px;
}

.hero__content,
.stats-panel,
.app-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
}

.hero__content {
  padding: 42px;
  border-radius: var(--radius-xl);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(247, 250, 255, 0.92)),
    var(--surface);
}

.hero__content::after {
  content: "";
  position: absolute;
  inset: auto -60px -60px auto;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(28, 79, 161, 0.18), transparent 68%);
}

.hero__eyebrow,
.section-heading__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  font-size: 0.77rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--primary);
}

.hero h1,
.section-heading h2 {
  margin: 0;
  letter-spacing: -0.02em;
}

.hero h1 {
  max-width: 12ch;
  font-size: clamp(2.4rem, 5vw, 4.5rem);
  line-height: 1.12;
}

.hero p {
  max-width: 60ch;
  margin: 18px 0 0;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-soft);
}

.hero__actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.stats-panel {
  display: grid;
  gap: 16px;
  padding: 24px;
  border-radius: var(--radius-xl);
  background:
    linear-gradient(180deg, rgba(19, 32, 51, 0.96), rgba(25, 44, 73, 0.92));
}

.stat-card {
  padding: 18px 18px 20px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.05);
}

.stat-card__label {
  display: block;
  margin-bottom: 10px;
  font-size: 0.88rem;
  color: rgba(235, 240, 247, 0.72);
}

.stat-card__value {
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  line-height: 1;
  color: #ffffff;
}

.app-card {
  padding: 32px;
  border-radius: 32px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(249, 251, 255, 0.88)),
    var(--surface);
}

/* Blocos internos usam a mesma linguagem visual para reforcar unidade. */
.composer,
.toolbar,
.task-item {
  border: 1px solid var(--border);
  background: var(--surface-strong);
  box-shadow: var(--shadow-md);
}

.composer {
  padding: 26px;
  border-radius: 24px;
}

.section-heading {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 20px;
}

.section-heading--compact {
  margin-bottom: 18px;
}

.section-heading h2 {
  font-size: clamp(1.4rem, 3vw, 2rem);
}

.task-counter {
  margin: 0;
  padding-top: 8px;
  font-size: 0.95rem;
  color: var(--text-soft);
}

.task-form {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 14px;
  margin-top: 22px;
}

.task-form input,
.search-field input,
.task-edit-input {
  width: 100%;
  border: 1px solid transparent;
  border-radius: 16px;
  padding: 16px 18px;
  background: var(--surface-muted);
  color: var(--text);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.task-form input:focus,
.search-field input:focus,
.task-edit-input:focus {
  outline: none;
  border-color: rgba(28, 79, 161, 0.32);
  box-shadow: 0 0 0 4px rgba(28, 79, 161, 0.12);
}

.form-helper {
  margin: 14px 0 0;
  font-size: 0.93rem;
  color: var(--text-soft);
}

/* Botoes compartilham feedback visual para a interface parecer mais coesa. */
.primary-button,
.ghost-button,
.danger-button,
.filter-button {
  border: none;
  border-radius: 14px;
  font-weight: 700;
  transition:
    transform 0.2s ease,
    background-color 0.2s ease,
    color 0.2s ease,
    border-color 0.2s ease,
    opacity 0.2s ease,
    box-shadow 0.2s ease;
}

.primary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 22px;
  color: #ffffff;
  background: linear-gradient(135deg, var(--primary), var(--primary-strong));
}

.primary-button--link {
  min-width: 200px;
}

.ghost-button,
.danger-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 11px 14px;
}

.ghost-button {
  background: var(--surface-muted);
  color: var(--text);
}

.ghost-button--hero {
  background: rgba(18, 32, 51, 0.06);
}

.danger-button {
  background: rgba(193, 67, 67, 0.1);
  color: var(--danger);
}

.primary-button:hover,
.ghost-button:hover,
.danger-button:hover,
.filter-button:hover {
  transform: translateY(-1px);
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin: 24px 0;
  padding: 18px;
  border-radius: 22px;
}

.search-field {
  flex: 1;
}

.filter-group {
  display: inline-flex;
  gap: 10px;
  flex-wrap: wrap;
}

.filter-button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 118px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  background: #ffffff;
  color: var(--text-soft);
}

.filter-button.is-active {
  border-color: rgba(28, 79, 161, 0.18);
  background: rgba(28, 79, 161, 0.1);
  color: var(--primary);
}

.filter-count {
  display: inline-flex;
  min-width: 24px;
  min-height: 24px;
  align-items: center;
  justify-content: center;
  padding: 0 8px;
  border-radius: 999px;
  background: rgba(18, 32, 51, 0.08);
  color: inherit;
  font-size: 0.8rem;
}

.primary-button:focus-visible,
.ghost-button:focus-visible,
.danger-button:focus-visible,
.filter-button:focus-visible,
.task-toggle:focus-visible + .checkbox-control__custom {
  outline: none;
  box-shadow: 0 0 0 4px rgba(28, 79, 161, 0.16);
}

.tasks-section {
  padding-top: 6px;
}

.task-list {
  display: grid;
  gap: 14px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.task-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px;
  border-radius: 22px;
  transition:
    transform 0.22s ease,
    border-color 0.22s ease,
    background-color 0.22s ease;
}

.task-item:hover {
  transform: translateY(-2px);
  border-color: var(--border-strong);
}

.task-item.is-completed {
  background: linear-gradient(180deg, #f5faf7 0%, #ffffff 100%);
}

.task-item.is-editing {
  border-color: rgba(28, 79, 161, 0.24);
  box-shadow: 0 0 0 4px rgba(28, 79, 161, 0.08), var(--shadow-md);
}

.task-item.is-completed .task-title {
  color: var(--text-soft);
  text-decoration: line-through;
}

.task-item__main {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  min-width: 0;
  flex: 1;
}

.checkbox-control {
  position: relative;
  flex-shrink: 0;
  margin-top: 2px;
}

.task-toggle {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.checkbox-control__custom {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border: 1.8px solid rgba(18, 32, 51, 0.2);
  border-radius: 8px;
  background: #ffffff;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.checkbox-control__custom::after {
  content: "";
  width: 10px;
  height: 6px;
  border-left: 2px solid #ffffff;
  border-bottom: 2px solid #ffffff;
  transform: rotate(-45deg) scale(0);
  transform-origin: center;
  transition: transform 0.18s ease;
}

.task-toggle:checked + .checkbox-control__custom {
  border-color: var(--success);
  background: var(--success);
}

.task-toggle:checked + .checkbox-control__custom::after {
  transform: rotate(-45deg) scale(1);
}

.task-content {
  min-width: 0;
}

.task-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.55;
  word-break: break-word;
}

.task-edit-row {
  margin-top: 8px;
}

.task-item__actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.empty-state {
  display: grid;
  place-items: center;
  padding: 48px 20px;
  margin-top: 8px;
  border: 1px dashed rgba(18, 32, 51, 0.16);
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(245, 247, 251, 0.75));
  text-align: center;
}

.empty-state__icon {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  margin-bottom: 16px;
  border-radius: 18px;
  background: rgba(28, 79, 161, 0.1);
  color: var(--primary);
  font-size: 2rem;
  font-weight: 400;
}

.empty-state h3 {
  margin: 0 0 10px;
  font-size: 1.3rem;
}

.empty-state p {
  max-width: 46ch;
  margin: 0;
  line-height: 1.7;
  color: var(--text-soft);
}

.empty-state__actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 22px;
}

.toast-region {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 40;
  pointer-events: none;
}

.toast {
  max-width: min(360px, calc(100vw - 32px));
  margin: 0;
  padding: 14px 16px;
  border: 1px solid rgba(18, 32, 51, 0.08);
  border-radius: 16px;
  background: rgba(18, 32, 51, 0.96);
  color: #ffffff;
  box-shadow: var(--shadow-md);
}

.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;
}

/* Ajustes intermediarios para tablet e notebooks compactos. */
@media (max-width: 920px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .section-heading {
    flex-direction: column;
  }

  .toolbar,
  .task-item {
    flex-direction: column;
    align-items: stretch;
  }

  .task-item__actions {
    justify-content: flex-start;
  }
}

/* Layout movel com prioridade para legibilidade e areas de toque. */
@media (max-width: 640px) {
  .page-shell {
    width: min(calc(100% - 20px), var(--container));
    padding: 24px 0 40px;
  }

  .hero__content,
  .stats-panel,
  .app-card {
    border-radius: 24px;
  }

  .hero__content,
  .app-card {
    padding: 22px;
  }

  .composer {
    padding: 18px;
  }

  .task-form {
    grid-template-columns: 1fr;
  }

  .primary-button {
    min-height: 52px;
  }

  .hero__actions,
  .empty-state__actions {
    flex-direction: column;
  }

  .hero__actions > *,
  .empty-state__actions > * {
    width: 100%;
  }

  .filter-group {
    width: 100%;
  }

  .filter-button {
    flex: 1;
    min-width: 0;
    justify-content: space-between;
  }

  .task-item__actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .danger-button {
    grid-column: span 2;
  }

  .toast-region {
    right: 10px;
    left: 10px;
    bottom: 10px;
  }
}

@media (max-width: 480px) {
  .page-shell {
    width: min(calc(100% - 16px), var(--container));
    padding: 16px 0 28px;
  }

  .hero {
    gap: 18px;
    margin-bottom: 18px;
  }

  .hero__content,
  .stats-panel,
  .app-card {
    border-radius: 20px;
  }

  .hero__content,
  .app-card,
  .stats-panel {
    padding: 18px;
  }

  .hero h1 {
    max-width: none;
    font-size: clamp(2rem, 10vw, 2.6rem);
    line-height: 1.14;
  }

  .hero p {
    font-size: 0.96rem;
    line-height: 1.65;
  }

  .composer,
  .toolbar {
    padding: 16px;
    border-radius: 18px;
  }

  .task-form input,
  .search-field input,
  .task-edit-input {
    padding: 14px 16px;
  }

  .toolbar {
    gap: 12px;
  }

  .filter-group {
    width: 100%;
    flex-direction: column;
  }

  .filter-button {
    width: 100%;
    min-width: 0;
    justify-content: space-between;
  }

  .task-item {
    padding: 16px;
    gap: 14px;
    border-radius: 18px;
  }

  .task-item__main {
    gap: 12px;
  }

  .task-title {
    font-size: 0.96rem;
    line-height: 1.5;
  }

  .task-item__actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .danger-button {
    grid-column: auto;
  }

  .ghost-button,
  .danger-button,
  .primary-button {
    width: 100%;
  }

  .empty-state {
    padding: 32px 16px;
  }

  .empty-state h3 {
    font-size: 1.15rem;
  }

  .toast {
    max-width: calc(100vw - 20px);
    padding: 13px 14px;
    font-size: 0.94rem;
  }
}

/* Reduz movimento para usuarios que preferem interfaces mais estaveis. */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}