:root {
  --purple: #6B3FF6;
  --purple-dark: #4320C2;
  --ink: #111111;
  --paper: #F5F5F5;

  --bg: #111111;
  --surface: #1B1B1F;
  --surface-raised: #232329;
  --text: #F5F5F5;
  --text-dim: #A8A8B3;
  --border: #2E2E36;

  --radius: 18px;
  --radius-sm: 12px;
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 40px;

  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

#app {
  max-width: 480px;
  margin: 0 auto;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}

/* ---------- Topo ---------- */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-2) var(--space-2);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.01em;
}

.brand-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--purple);
  box-shadow: 0 0 0 4px rgba(107, 63, 246, 0.18);
}

.view-toggle {
  display: flex;
  gap: var(--space-1);
}

.icon-btn {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.icon-btn:hover, .icon-btn:focus-visible {
  border-color: var(--purple);
  color: var(--text);
}

.icon-btn.active {
  border-color: var(--purple);
  color: var(--purple);
  background: rgba(107, 63, 246, 0.12);
}

/* ---------- Captura ---------- */

.capture {
  padding: 0 var(--space-2) var(--space-3);
}

.capture-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-2);
  display: flex;
  gap: var(--space-1);
  align-items: flex-end;
  transition: border-color 0.15s ease;
}

.capture-box:focus-within {
  border-color: var(--purple);
}

.capture-box textarea {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  resize: none;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.4;
  max-height: 120px;
  min-height: 24px;
}

.capture-box textarea::placeholder {
  color: var(--text-dim);
}

.capture-send {
  width: 40px;
  height: 40px;
  min-width: 40px;
  border-radius: 12px;
  border: none;
  background: var(--purple);
  color: var(--paper);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.1s ease;
}

.capture-send:active {
  transform: scale(0.94);
}

.capture-send:disabled {
  background: var(--border);
  color: var(--text-dim);
  cursor: default;
}

.capture-hint {
  padding: var(--space-1) var(--space-1) 0;
  font-size: 12px;
  color: var(--text-dim);
}

/* ---------- Área principal ---------- */

main {
  flex: 1;
  padding: 0 var(--space-2) var(--space-4);
  overflow-y: auto;
}

/* ---------- Cartão "próximo item" ---------- */

.next-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 50vh;
  text-align: center;
}

.next-eyebrow {
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: var(--space-2);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.next-card {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: var(--space-4) var(--space-3);
  position: relative;
  overflow: hidden;
}

.next-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: linear-gradient(90deg, var(--purple), var(--purple-dark));
}

.next-card-text {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--text);
  word-break: break-word;
}

.next-card-meta {
  margin-top: var(--space-2);
  font-size: 13px;
  color: var(--text-dim);
}

.next-actions {
  display: flex;
  gap: var(--space-2);
  margin-top: var(--space-3);
  width: 100%;
}

.next-actions button {
  flex: 1;
  padding: 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface-raised);
  color: var(--text);
  font-size: 15px;
  font-weight: 600;
  font-family: var(--font-body);
  cursor: pointer;
  transition: transform 0.1s ease, border-color 0.15s ease;
}

.next-actions button:active {
  transform: scale(0.97);
}

.btn-done {
  background: var(--purple) !important;
  border-color: var(--purple) !important;
  color: var(--paper) !important;
}

.empty-state {
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.5;
  max-width: 280px;
}

.empty-state strong {
  display: block;
  color: var(--text);
  font-family: var(--font-display);
  font-size: 19px;
  margin-bottom: var(--space-1);
}

/* ---------- Lista completa ---------- */

.list-view { display: none; }
.list-view.active { display: block; }
.next-stage.hidden { display: none; }

.list-section-title {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  margin: var(--space-3) 0 var(--space-1);
}

.item-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: var(--space-2);
  margin-bottom: var(--space-1);
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
}

.item-check {
  width: 24px;
  height: 24px;
  min-width: 24px;
  border-radius: 8px;
  border: 2px solid var(--border);
  background: transparent;
  cursor: pointer;
  margin-top: 2px;
}

.item-check.checked {
  background: var(--purple);
  border-color: var(--purple);
}

.item-body { flex: 1; min-width: 0; }

.item-text {
  font-size: 15px;
  line-height: 1.4;
  color: var(--text);
  word-break: break-word;
}

.item-text.done {
  color: var(--text-dim);
  text-decoration: line-through;
}

.item-meta {
  margin-top: 4px;
  font-size: 12px;
  color: var(--text-dim);
  display: flex;
  gap: var(--space-1);
  flex-wrap: wrap;
}

.tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  border: 1px solid var(--border);
  color: var(--text-dim);
}

/* ---------- Rodapé fixo ---------- */

.tabbar {
  display: flex;
  border-top: 1px solid var(--border);
  background: var(--surface);
}

.tabbar button {
  flex: 1;
  background: none;
  border: none;
  padding: 14px 0 calc(14px + env(safe-area-inset-bottom));
  color: var(--text-dim);
  font-size: 12px;
  font-family: var(--font-body);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  cursor: pointer;
}

.tabbar button.active {
  color: var(--purple);
}

/* ---------- Utilitário ---------- */

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}