:root {
  color-scheme: light;
  --bg: #f3f5f9;
  --bg-top: #ffffff;
  --bg-accent: #eef4ff;
  --card: rgba(255, 255, 255, 0.92);
  --card-strong: #ffffff;
  --card-border: rgba(255, 255, 255, 0.8);
  --text: #14213d;
  --muted: #64748b;
  --line: #dbe3ee;
  --line-strong: #c8d4e3;
  --surface-soft: #f8fafc;
  --surface-alt: rgba(248, 250, 252, 0.88);
  --entry-bg: rgba(255, 255, 255, 0.82);
  --ghost-bg: rgba(255, 255, 255, 0.88);
  --danger-bg: rgba(254, 242, 242, 0.9);
  --helper-bg-start: rgba(37, 99, 235, 0.04);
  --helper-bg-end: rgba(255, 255, 255, 0.9);
  --card-highlight-start: rgba(37, 99, 235, 0.08);
  --card-highlight-end: rgba(255, 255, 255, 0.94);
  --card-summary-start: rgba(96, 165, 250, 0.08);
  --card-summary-end: rgba(255, 255, 255, 0.96);
  --settlement-start: rgba(37, 99, 235, 0.12);
  --settlement-end: rgba(96, 165, 250, 0.06);
  --brand: #2563eb;
  --brand-soft: #dbeafe;
  --danger: #dc2626;
  --shadow: 0 18px 48px rgba(15, 23, 42, 0.08);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0b1220;
  --bg-top: #0f172a;
  --bg-accent: #0f1a2f;
  --card: rgba(15, 23, 42, 0.85);
  --card-strong: #111b2f;
  --card-border: rgba(148, 163, 184, 0.18);
  --text: #e5ecf8;
  --muted: #9fb0ca;
  --line: #2b3955;
  --line-strong: #415577;
  --surface-soft: #1a2740;
  --surface-alt: rgba(26, 39, 64, 0.8);
  --entry-bg: rgba(17, 27, 47, 0.88);
  --ghost-bg: rgba(17, 27, 47, 0.92);
  --danger-bg: rgba(127, 29, 29, 0.34);
  --helper-bg-start: rgba(96, 165, 250, 0.12);
  --helper-bg-end: rgba(17, 27, 47, 0.9);
  --card-highlight-start: rgba(59, 130, 246, 0.18);
  --card-highlight-end: rgba(17, 27, 47, 0.9);
  --card-summary-start: rgba(96, 165, 250, 0.2);
  --card-summary-end: rgba(17, 27, 47, 0.92);
  --settlement-start: rgba(59, 130, 246, 0.2);
  --settlement-end: rgba(30, 64, 175, 0.22);
  --brand: #60a5fa;
  --brand-soft: rgba(96, 165, 250, 0.16);
  --danger: #f87171;
  --shadow: 0 22px 56px rgba(2, 8, 23, 0.55);
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  min-height: 100%;
  background:
    radial-gradient(circle at top, var(--bg-top) 0%, var(--bg) 48%, var(--bg-accent) 100%);
  overflow-x: hidden;
}

body {
  margin: 0;
  min-height: 100vh;
  width: 100%;
  overflow-x: hidden;
  padding: 32px 18px 48px;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: transparent;
}

button,
input,
select,
textarea {
  font: inherit;
}

.app-shell {
  max-width: 1180px;
  width: 100%;
  margin: 0 auto;
  display: grid;
  gap: 20px;
  min-width: 0;
}

.app-shell section[id] {
  scroll-margin-top: 110px;
}

.hero,
.card {
  backdrop-filter: blur(18px);
  background: var(--card);
  border: 1px solid var(--card-border);
  box-shadow: var(--shadow);
}

.hero {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  padding: 28px;
}

.hero-copy {
  display: grid;
  gap: 10px;
  max-width: 700px;
}

.hero h1,
.card h2 {
  margin: 0;
}

.hero h1 {
  font-size: clamp(2rem, 3vw, 2.8rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.eyebrow {
  display: inline-flex;
  width: fit-content;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--brand-soft);
  color: var(--brand);
  font-size: 0.85rem;
  font-weight: 700;
}

.hero-badge {
  flex-shrink: 0;
  padding: 12px 16px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--brand), #60a5fa);
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.hero-actions {
  display: grid;
  gap: 10px;
  justify-items: stretch;
  width: min(100%, 420px);
}

.hero-action-grid {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.session-join {
  display: grid;
  gap: 6px;
  width: 100%;
}

.session-join[hidden] {
  display: none !important;
}

#toggle-session-join {
  width: fit-content;
}

.session-join label {
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 700;
}

.session-join-row {
  display: flex;
  gap: 8px;
  align-items: center;
}

.session-join-row input {
  min-width: 0;
  flex: 1;
}

.session-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--ghost-bg);
  color: var(--muted);
  font-size: 0.85rem;
}

.session-chip.is-copied {
  border-color: #22c55e;
  background: rgba(34, 197, 94, 0.12);
  color: #22c55e;
}

.session-chip.is-copied code {
  color: var(--text);
}

.session-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.session-controls .session-chip {
  min-width: 0;
  flex: 1;
}

.session-controls #toggle-session-join {
  flex-shrink: 0;
}

.session-modal {
  width: min(560px, calc(100% - 28px));
  max-height: min(720px, calc(100vh - 28px));
  padding: 0;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background: var(--card-strong);
  color: var(--text);
  box-shadow: 0 24px 80px rgba(2, 8, 23, 0.35);
}

.session-modal::backdrop {
  background: rgba(2, 8, 23, 0.58);
  backdrop-filter: blur(4px);
}

.session-modal-content {
  display: grid;
  gap: 18px;
  padding: 24px;
}

.modal-close {
  width: 36px;
  min-width: 36px;
  height: 36px;
  padding: 0;
  font-size: 1.4rem;
  line-height: 1;
}

.modal-session-block,
.session-option {
  display: grid;
  gap: 10px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface-alt);
}

.modal-label,
.session-option h3 {
  margin: 0;
  font-size: 0.92rem;
  font-weight: 700;
}

.session-option p {
  margin: 0;
}

.session-modal-options {
  display: grid;
  gap: 12px;
}

.session-option-danger {
  border-color: rgba(220, 38, 38, 0.3);
}

.session-option-danger button {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid rgba(220, 38, 38, 0.2);
}

.icon-btn {
  position: relative;
  display: inline-grid;
  width: 42px;
  min-width: 42px;
  height: 42px;
  padding: 0;
  place-items: center;
  font-size: 1.2rem;
  line-height: 1;
}

.icon-btn span {
  pointer-events: none;
}

.icon-btn[data-tooltip]::after {
  position: absolute;
  right: 0;
  bottom: calc(100% + 8px);
  z-index: 40;
  width: max-content;
  max-width: 220px;
  padding: 7px 10px;
  border-radius: 8px;
  background: var(--text);
  color: var(--card-strong);
  content: attr(data-tooltip);
  font-size: 0.78rem;
  font-weight: 600;
  line-height: 1.2;
  opacity: 0;
  pointer-events: none;
  transform: translateY(4px);
  transition:
    opacity 150ms ease,
    transform 150ms ease;
}

.icon-btn[data-tooltip]:hover::after,
.icon-btn[data-tooltip]:focus-visible::after {
  opacity: 1;
  transform: translateY(0);
}

.session-chip code {
  display: block;
  min-width: 0;
  overflow: hidden;
  color: var(--text);
  font-size: 0.8rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.layout {
  display: grid;
  gap: 20px;
  min-width: 0;
}

.layout-top {
  grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
}

.layout-single {
  grid-template-columns: minmax(0, 1fr);
}

.layout-forms,
.layout-lists {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.layout-utils {
  grid-template-columns: minmax(0, 1fr);
}

.top-nav {
  position: sticky;
  top: 8px;
  z-index: 30;
  display: flex;
  gap: 8px;
  flex-wrap: nowrap;
  overflow-x: auto;
  padding: 10px;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.top-nav::-webkit-scrollbar {
  display: none;
}

.top-nav a {
  flex-shrink: 0;
  text-decoration: none;
  color: var(--muted);
  font-weight: 700;
  font-size: 0.9rem;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--card-strong);
}

.top-nav a:hover {
  border-color: var(--line-strong);
  color: var(--text);
}

.card {
  border-radius: var(--radius-lg);
  padding: 22px;
  min-width: 0;
}

.card-highlight {
  background:
    linear-gradient(180deg, var(--card-highlight-start), var(--card-highlight-end)),
    var(--card);
}

.card-summary {
  background:
    linear-gradient(180deg, var(--card-summary-start), var(--card-summary-end)),
    var(--card);
}

.summary-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 14px;
}

.summary-card {
  padding: 14px;
  border-radius: var(--radius-md);
  background: var(--surface-alt);
  border: 1px solid var(--line);
}

.summary-card h3 {
  margin: 0 0 10px;
  font-size: 1rem;
}

.summary-metrics {
  display: grid;
  gap: 10px;
}

.summary-metric {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  font-size: 0.95rem;
}

.summary-metric dt {
  color: var(--muted);
}

.summary-metric dd {
  margin: 0;
  font-weight: 700;
}

.positive {
  color: #16a34a;
}

.negative {
  color: var(--danger);
}

.card-secondary {
  border-style: dashed;
  border-color: var(--line-strong);
  opacity: 0.94;
}

.section-heading {
  display: grid;
  gap: 6px;
  margin-bottom: 16px;
}

.section-heading-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.section-heading h2 {
  font-size: 1.08rem;
  letter-spacing: -0.02em;
}

.hint {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.helper-box {
  margin-bottom: 16px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, var(--helper-bg-start), var(--helper-bg-end));
}

.helper-box pre {
  margin: 10px 0 0;
  padding: 12px 14px;
  overflow-x: auto;
  border-radius: 12px;
  background: var(--surface-soft);
  color: var(--text);
  font-family:
    ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 0.9rem;
  line-height: 1.5;
}

form,
.item-row {
  display: grid;
  gap: 12px;
}

.split-fields {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.trip-person-field {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
}

.split-fields-3 {
  grid-template-columns: minmax(120px, 160px) repeat(2, minmax(0, 1fr));
  align-items: end;
}

label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 600;
}

input,
textarea,
select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--card-strong);
  color: var(--text);
  padding: 13px 14px;
  outline: none;
  transition:
    border-color 150ms ease,
    box-shadow 150ms ease,
    transform 150ms ease;
}

select {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  cursor: pointer;
  padding-right: 42px;
  background-image:
    linear-gradient(45deg, transparent 50%, var(--muted) 50%),
    linear-gradient(135deg, var(--muted) 50%, transparent 50%);
  background-position:
    calc(100% - 18px) calc(50% - 2px),
    calc(100% - 12px) calc(50% - 2px);
  background-size:
    6px 6px,
    6px 6px;
  background-repeat: no-repeat;
}

select:hover {
  border-color: var(--line-strong);
}

input::placeholder,
textarea::placeholder {
  color: #94a3b8;
}

input:focus,
textarea:focus,
select:focus {
  border-color: rgba(37, 99, 235, 0.45);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

textarea {
  min-height: 120px;
  resize: vertical;
}

button {
  border: 0;
  border-radius: 999px;
  padding: 12px 18px;
  cursor: pointer;
  font-weight: 700;
  letter-spacing: -0.01em;
  transition:
    transform 150ms ease,
    box-shadow 150ms ease,
    opacity 150ms ease;
}

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

button:disabled,
input:disabled,
select:disabled,
textarea:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

button:active {
  transform: translateY(0);
}

#importar-por-texto-btn,
button[type="submit"],
#ocr-create-bill-btn {
  background: linear-gradient(135deg, var(--brand), #60a5fa);
  color: #fff;
  box-shadow: 0 12px 24px rgba(37, 99, 235, 0.22);
}

#add-item-btn,
#ocr-add-to-bill-btn {
  background: var(--brand-soft);
  color: var(--brand);
}

.theme-toggle {
  position: fixed;
  top: 14px;
  right: 14px;
  z-index: 50;
  display: grid;
  width: 42px;
  min-width: 42px;
  height: 42px;
  padding: 0;
  place-items: center;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--text);
  font-size: 1.35rem;
  line-height: 1;
}

.ghost-btn {
  background: var(--ghost-bg);
  color: var(--text);
  border: 1px solid var(--line);
  box-shadow: none;
}

.collapse-toggle {
  display: inline-flex;
  width: fit-content;
  align-self: flex-start;
  padding: 8px 12px;
  font-size: 0.85rem;
  min-width: 92px;
}

.collapsed .section-heading {
  margin-bottom: 0;
}

.collapsed .collapsible-body {
  display: none;
}

.danger-btn {
  color: var(--danger);
  border-color: rgba(220, 38, 38, 0.16);
  background: var(--danger-bg);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.item-row {
  grid-template-columns: 2fr 1fr 1.2fr 1.2fr auto;
  align-items: center;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface-alt);
}

.remove-btn {
  min-width: 42px;
  min-height: 42px;
  padding: 0 12px;
  border: 1px solid rgba(220, 38, 38, 0.18);
  background: rgba(220, 38, 38, 0.08);
  color: var(--danger);
  box-shadow: none;
  white-space: nowrap;
}

#settlement {
  margin-bottom: 14px;
}

#settlement p {
  margin: 0;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--settlement-start), var(--settlement-end));
  color: var(--text);
}

.settlement-amount {
  color: var(--brand);
  font-weight: 800;
}

#totals-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  overflow: hidden;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: var(--card-strong);
}

#totals-table th,
#totals-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}

#totals-table th {
  background: var(--surface-soft);
  color: var(--muted);
  font-size: 0.86rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

#totals-table tr:last-child td {
  border-bottom: 0;
}

#totals-table td {
  vertical-align: top;
}

.stack-list,
#ocr-items {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.entry-card,
.list-card,
#ocr-items li,
#expenses-list li,
#bills-list > li {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--entry-bg);
}

.entry-card {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
}

.entry-main {
  flex: 1;
  min-width: 0;
}

.entry-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.entry-title-row strong {
  font-size: 1rem;
}

.entry-amount {
  color: var(--brand);
  font-weight: 800;
  white-space: nowrap;
}

.entry-meta {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.empty-state {
  color: var(--muted);
}

#ocr-items li,
#expenses-list li {
  color: var(--text);
  line-height: 1.5;
}

#bills-list > li > strong {
  display: block;
  margin-bottom: 10px;
  font-size: 1rem;
}

#bills-list ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

#bills-list ul li {
  padding: 12px 14px;
  border-radius: 12px;
  background: var(--surface-soft);
  border: 1px solid var(--line);
  line-height: 1.45;
  overflow-wrap: anywhere;
}

#ocr-clear-after-create {
  width: 18px;
  height: 18px;
  margin: 0;
}

.checkbox-field {
  grid-template-columns: 18px 1fr;
  align-items: center;
  gap: 10px;
  font-weight: 500;
}

@media (max-width: 960px) {
  .layout-top,
  .layout-forms,
  .layout-lists,
  .layout-utils {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  body {
    padding: 16px 10px 28px;
  }

  .hero {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions {
    justify-items: stretch;
  }

  .session-chip {
    width: 100%;
    justify-content: center;
  }

  .session-controls {
    align-items: center;
  }

  .session-controls #toggle-session-join {
    width: auto;
  }

  .session-controls .session-chip {
    width: auto;
  }

  .hero-action-grid {
    grid-template-columns: 1fr;
  }

  .session-join {
    width: 100%;
  }

  .session-join-row {
    flex-direction: column;
    align-items: stretch;
  }

  .session-join-row button {
    width: 100%;
  }

  .session-modal-content {
    padding: 18px;
  }

  .card,
  .hero {
    padding: 18px;
    border-radius: 20px;
  }

  .top-nav {
    top: 6px;
    padding: 8px;
    gap: 6px;
  }

  .top-nav a {
    font-size: 0.82rem;
    padding: 7px 10px;
  }

  .split-fields,
  .split-fields-3,
  .item-row {
    grid-template-columns: 1fr;
  }

  .trip-person-field {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .item-row {
    gap: 10px;
  }

  .remove-btn {
    width: auto;
    min-width: 132px;
    min-height: 40px;
    justify-self: end;
    padding: 8px 12px;
    border-radius: 12px;
  }

  button {
    width: auto;
  }

  form button,
  .actions button,
  .hero-action-grid button,
  #copy-session-link {
    width: 100%;
  }

  .actions {
    flex-direction: column;
  }

  .entry-card,
  .entry-title-row {
    flex-direction: column;
    align-items: stretch;
  }

  #totals-table {
    display: block;
    overflow-x: auto;
  }

  .summary-cards {
    grid-template-columns: 1fr;
  }

  .app-shell section[id] {
    scroll-margin-top: 94px;
  }
}