:root {
  --bg: #0f172a;
  --panel: #111827;
  --line: #334155;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --accent: #22c55e;
  --accent-2: #16a34a;
  --accent-soft: rgba(34, 197, 94, 0.14);
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.28);
  --radius: 18px;
  --radius-sm: 12px;
  --max-width: 880px;
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background:
    radial-gradient(circle at top, rgba(34, 197, 94, 0.12), transparent 28%),
    linear-gradient(180deg, #020617 0%, #0f172a 100%);
  color: var(--text);
  min-height: 100vh;
}

button,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  width: min(100% - 32px, var(--max-width));
  margin: 0 auto;
  padding: 0 0 110px;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  padding: 12px 0;
  margin: 0 0 18px;
  background: rgba(2, 6, 23, 0.98);
  border-bottom: 1px solid rgba(148, 163, 184, 0.08);
  backdrop-filter: blur(10px);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.topbar-left {
  min-width: 0;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: nowrap;
}

h1,
h2,
h3,
h4,
p {
  margin-top: 0;
}

h1 {
  margin: 0;
  font-size: clamp(1.8rem, 3vw, 2.35rem);
  line-height: 1.1;
}

h2 {
  margin-bottom: 8px;
  font-size: 1.15rem;
}

.main-content {
  display: grid;
  gap: 20px;
}

.list-section {
  display: grid;
  gap: 14px;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 16px;
}

.section-header p {
  margin-bottom: 2px;
  color: var(--muted);
  font-size: 0.95rem;
  white-space: nowrap;
}

.items-list {
  display: grid;
  gap: 14px;
}

.item-card,
.modal-panel {
  background: rgba(17, 24, 39, 0.92);
  border: 1px solid rgba(148, 163, 184, 0.15);
  box-shadow: var(--shadow);
  border-radius: var(--radius);
}

.item-card {
  padding: 18px;
  display: grid;
  gap: 14px;
}

.item-card-top {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 12px;
}

.item-name {
  margin-bottom: 8px;
  font-size: 1.15rem;
}

.item-meta-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.item-badge,
.item-note-setting,
.item-archived-setting {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.82rem;
}

.item-badge {
  background: rgba(34, 197, 94, 0.15);
  border: 1px solid rgba(34, 197, 94, 0.35);
  color: #bbf7d0;
}

.item-note-setting,
.item-archived-setting {
  background: rgba(148, 163, 184, 0.12);
  border: 1px solid rgba(148, 163, 184, 0.18);
  color: var(--muted);
}

.item-status {
  display: grid;
  gap: 4px;
}

.item-last-confirmed-label {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.item-last-confirmed-value {
  margin-bottom: 0;
  font-size: 1rem;
  font-weight: 700;
}

.item-actions {
  display: flex;
  gap: 10px;
  flex-wrap: nowrap;
  align-items: center;
  min-width: 0;
}

.button {
  min-height: 42px;
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid transparent;
  transition: transform 120ms ease, background 120ms ease, border-color 120ms ease, font-size 120ms ease, padding 120ms ease;
  white-space: nowrap;
  width: auto;
}

.item-actions .button {
  flex: 0 1 auto;
  min-width: 0;
  max-width: 100%;
  overflow: hidden;
  text-overflow: clip;
  font-size: clamp(0.78rem, 1.8vw, 1rem);
  padding-inline: clamp(8px, 1.4vw, 14px);
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: var(--accent);
  color: #052e16;
  font-weight: 700;
}

.button-primary:hover {
  background: var(--accent-2);
}

.button-secondary {
  background: rgba(148, 163, 184, 0.08);
  color: var(--text);
  border-color: rgba(148, 163, 184, 0.18);
}

.button-compact {
  min-height: 38px;
  padding: 8px 12px;
  flex: 0 0 auto;
  font-size: 0.95rem;
}

.form-actions-compact {
  justify-content: end;
}

.icon-button {
  min-width: 40px;
  min-height: 40px;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid rgba(148, 163, 184, 0.18);
  background: rgba(148, 163, 184, 0.08);
  color: var(--text);
  font-size: 1.2rem;
  line-height: 1;
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
}

.view-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.08);
  border: 1px solid rgba(148, 163, 184, 0.18);
}

.view-toggle-button {
  min-height: 36px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  white-space: nowrap;
  transition: background 120ms ease, color 120ms ease, border-color 120ms ease;
}

.view-toggle-button.is-active {
  background: var(--accent-soft);
  color: #bbf7d0;
  border-color: rgba(34, 197, 94, 0.35);
}

.button-hold {
  position: relative;
  isolation: isolate;
  overflow: hidden;
}

.button-hold-fill {
  position: absolute;
  inset: 0;
  width: 0%;
  background: rgba(5, 46, 22, 0.18);
  z-index: 0;
  pointer-events: none;
}

.button-hold-label {
  position: relative;
  z-index: 1;
}

.history-panel {
  padding-top: 6px;
  border-top: 1px solid rgba(148, 163, 184, 0.14);
}

.history-panel h4 {
  margin-bottom: 10px;
  font-size: 0.95rem;
}

.history-list {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  display: grid;
  gap: 8px;
}

.history-list li {
  line-height: 1.45;
}

.history-important-dot {
  display: inline-grid;
  place-items: center;
  width: 18px;
  height: 18px;
  margin-left: 6px;
  border-radius: 999px;
  background: rgba(34, 197, 94, 0.18);
  border: 1px solid rgba(34, 197, 94, 0.45);
  color: #bbf7d0;
  font-size: 0.75rem;
  font-weight: 700;
  vertical-align: text-bottom;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 30;
  display: grid;
  place-items: center;
  padding: 20px;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(2, 6, 23, 0.72);
  backdrop-filter: blur(4px);
}

.modal-panel {
  position: relative;
  width: min(100%, 520px);
  padding: 20px;
  z-index: 1;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.form-stack {
  display: grid;
  gap: 16px;
}

.form-field {
  display: grid;
  gap: 8px;
}

.form-field label {
  font-weight: 700;
}

.form-field input,
.form-field textarea {
  width: 100%;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(148, 163, 184, 0.2);
  background: rgba(15, 23, 42, 0.9);
  color: var(--text);
  padding: 12px 14px;
}

.form-field textarea {
  resize: vertical;
}

.field-meta {
  display: flex;
  justify-content: end;
  color: var(--muted);
  font-size: 0.85rem;
}

.checkbox-row {
  display: flex;
  gap: 10px;
  align-items: start;
  color: var(--text);
}

.checkbox-row input {
  margin-top: 3px;
}

.form-actions {
  display: flex;
  justify-content: end;
  gap: 10px;
  flex-wrap: wrap;
}

.help-content p {
  color: var(--text);
  line-height: 1.5;
}

.help-list {
  margin: 12px 0 0;
  padding-left: 18px;
  color: var(--muted);
  display: grid;
  gap: 8px;
}

.floating-add-button {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 20;
  width: 62px;
  height: 62px;
  border: none;
  border-radius: 999px;
  background: var(--accent);
  color: #052e16;
  font-size: 2rem;
  font-weight: 700;
  box-shadow: 0 14px 30px rgba(34, 197, 94, 0.28);
  transition: transform 120ms ease, box-shadow 120ms ease, background 120ms ease;
}

.floating-add-button:hover {
  transform: translateY(-2px) scale(1.02);
  background: var(--accent-2);
  box-shadow: 0 18px 36px rgba(34, 197, 94, 0.34);
}

.hidden {
  display: none !important;
}

.item-card.confirmed-flash {
  animation: confirmedFlash 420ms ease;
}

@keyframes confirmedFlash {
  0% {
    transform: scale(1);
    border-color: rgba(34, 197, 94, 0.25);
  }
  50% {
    transform: scale(1.01);
    border-color: rgba(34, 197, 94, 0.65);
  }
  100% {
    transform: scale(1);
    border-color: rgba(34, 197, 94, 0.25);
  }
}

@media (max-width: 720px) {
  .app-shell {
    width: min(100% - 20px, var(--max-width));
    padding-bottom: 110px;
  }

  .topbar {
    gap: 12px;
  }

  .section-header {
    display: flex;
    justify-content: space-between;
    align-items: end;
    gap: 12px;
  }

  .item-actions .button {
    font-size: clamp(0.7rem, 2.7vw, 1rem);
    padding-inline: clamp(6px, 1.8vw, 14px);
  }

  .form-actions {
    justify-content: start;
  }

  .floating-add-button {
    right: 16px;
    bottom: 16px;
  }
}