:root {
  --bg: #eef1f5;
  --panel: #ffffff;
  --border: #d8dee4;
  --text: #1f2933;
  --muted: #5f6b7a;
  --primary: #0b6e99;
  --primary-dark: #085a7c;
  --profile-accent: #2563eb;
  --profile-bg: #eff6ff;
  --profile-border: #bfdbfe;
  --yearly-accent: #b45309;
  --yearly-bg: #fffbeb;
  --yearly-border: #fde68a;
  --options-accent: #475569;
  --options-bg: #f8fafc;
  --data-accent: #7c2d12;
  --data-bg: #fff7ed;
  --data-border: #fed7aa;
  --danger: #b91c1c;
  --danger-dark: #991b1b;
  --shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
  --header-height: 74px;
}

* {
  box-sizing: border-box;
}

html {
  height: 100%;
  overflow: hidden;
}

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  color: var(--text);
  background: var(--bg);
}

body.app-page {
  height: 100dvh;
  max-height: 100dvh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

body.app-page main {
  flex: 1 1 auto;
  min-height: 0;
  overflow: hidden;
  height: 100%;
}

.app-header {
  flex-shrink: 0;
  z-index: 200;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(15, 23, 42, 0.06);
}

h1 {
  margin: 0;
  font-size: 1.25rem;
}

.subtitle {
  margin: 0.2rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.header-brand {
  min-width: 0;
}

.header-legal,
.mobile-gate-legal,
.panel-legal-links {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: wrap;
  font-size: 0.82rem;
}

.header-legal {
  margin-top: 0.45rem;
}

.mobile-gate-legal {
  justify-content: center;
  margin-bottom: 0.5rem;
}

.panel-legal-links {
  margin: 0.75rem 0 0;
  color: var(--muted);
}

.header-legal a,
.mobile-gate-legal a,
.panel-legal-links a {
  color: var(--primary);
  text-decoration: none;
}

.header-legal a:hover,
.mobile-gate-legal a:hover,
.panel-legal-links a:hover {
  text-decoration: underline;
}

.header-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

main {
  display: grid;
  grid-template-columns: 380px 1fr;
  grid-template-rows: minmax(0, 1fr);
  min-height: 0;
  height: 100%;
}

#sidebar,
.sidebar-accordion {
  padding: 1rem;
  border-right: 1px solid var(--border);
  background: var(--bg);
  min-height: 0;
  overflow-x: hidden;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

#sidebar > .panel-accordion,
.sidebar-accordion > .panel-accordion {
  flex-shrink: 0;
}

.panel-card {
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--panel);
  padding: 1rem;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.04);
}

.panel-accordion.panel-card {
  padding: 0;
  overflow: hidden;
}

.panel-summary {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem;
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.panel-summary::-webkit-details-marker {
  display: none;
}

.panel-summary::marker {
  content: "";
}

.panel-summary-text {
  flex: 1;
  min-width: 0;
}

.panel-summary-text .panel-badge {
  margin-bottom: 0.45rem;
}

.panel-summary h2 {
  margin: 0;
  font-size: 1rem;
}

.panel-chevron {
  flex-shrink: 0;
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.65);
  color: var(--muted);
  display: grid;
  place-items: center;
  font-size: 0.85rem;
  line-height: 1;
  transition: transform 0.2s ease;
}

.panel-chevron::before {
  content: "▾";
}

.panel-accordion:not([open]) .panel-chevron {
  transform: rotate(-90deg);
}

.panel-accordion:not([open]) > .panel-body {
  display: none;
}

.panel-body {
  padding: 0 1rem 1rem;
}

.panel-body .panel-desc {
  margin-top: 0;
}

.panel-body .panel-actions,
.panel-body .data-actions {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.panel-profile .panel-actions {
  border-top-color: var(--profile-border);
}

.panel-yearly .panel-actions {
  border-top-color: var(--yearly-border);
}

.panel-body .panel-legal-links {
  margin-top: 0.75rem;
}

.panel-profile {
  background: var(--profile-bg);
  border-color: var(--profile-border);
}

.panel-yearly {
  background: var(--yearly-bg);
  border-color: var(--yearly-border);
}

.panel-options {
  background: var(--options-bg);
}

.panel-data {
  background: var(--data-bg);
  border-color: var(--data-border);
}

.panel-data .panel-badge {
  background: #ffedd5;
  color: var(--data-accent);
}

.panel-data a {
  color: var(--data-accent);
}

.data-actions,
.panel-actions {
  display: grid;
  gap: 0.65rem;
}

.btn.danger {
  background: var(--danger);
  color: white;
}

.btn.danger:hover:not(:disabled) {
  background: var(--danger-dark);
}

.btn.danger:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.app-footer,
.login-footer,
.legal-footer {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  padding: 1rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.app-footer {
  border-top: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.96);
  flex-shrink: 0;
}

.login-footer {
  margin-top: 1.5rem;
  padding: 0;
}

.app-footer a,
.login-footer a,
.legal-footer a {
  color: var(--primary);
  text-decoration: none;
}

.app-footer a:hover,
.login-footer a:hover,
.legal-footer a:hover {
  text-decoration: underline;
}

.mobile-gate {
  flex: 1;
  min-height: 0;
  display: none;
  place-items: center;
  padding: 1.5rem;
  overflow: auto;
  background:
    radial-gradient(circle at top, rgba(11, 110, 153, 0.1), transparent 55%),
    var(--bg);
}

.mobile-gate:not([hidden]) {
  display: grid;
}

.mobile-gate-card {
  width: min(480px, 100%);
  padding: 2rem 1.5rem;
  border-radius: 16px;
  background: var(--panel);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  text-align: center;
}

.mobile-gate-card h2 {
  margin: 0 0 1rem;
  font-size: 1.25rem;
}

.mobile-gate-card p {
  margin: 0 0 1rem;
  color: var(--muted);
  line-height: 1.5;
}

.mobile-gate-actions {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 400;
  display: none;
  place-items: center;
  padding: 1rem;
  overflow-y: auto;
}

.modal:not([hidden]) {
  display: grid;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
}

.modal-card {
  position: relative;
  z-index: 1;
  width: min(460px, 100%);
  max-height: calc(100dvh - 2rem);
  overflow-y: auto;
  padding: 1.5rem;
  border-radius: 14px;
  background: white;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.modal-card h2 {
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
}

.modal-card p {
  margin: 0 0 1rem;
  color: var(--muted);
  line-height: 1.5;
  font-size: 0.92rem;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  margin-top: 1rem;
}

.legal-page {
  height: 100dvh;
  overflow-y: auto;
  min-height: 100vh;
  padding: 1.5rem;
  background:
    radial-gradient(circle at top, rgba(11, 110, 153, 0.08), transparent 55%),
    var(--bg);
}

.legal-card {
  max-width: 760px;
  margin: 0 auto;
  padding: 2rem 1.75rem;
  border-radius: 16px;
  background: var(--panel);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.legal-header {
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.legal-back {
  display: inline-block;
  margin-bottom: 0.75rem;
  color: var(--primary);
  text-decoration: none;
  font-size: 0.9rem;
}

.legal-back:hover {
  text-decoration: underline;
}

.legal-header h1 {
  margin: 0;
  font-size: 1.6rem;
}

.legal-updated {
  margin: 0.5rem 0 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.legal-content h2 {
  margin: 1.5rem 0 0.6rem;
  font-size: 1.05rem;
}

.legal-content p,
.legal-content li {
  line-height: 1.55;
  color: var(--text);
}

.legal-content ul {
  padding-left: 1.25rem;
}

.legal-content code {
  font-size: 0.85em;
  background: #f1f5f9;
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
}

.legal-footer {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.panel-summary:hover {
  background: rgba(255, 255, 255, 0.35);
}

.panel-accordion[open] > .panel-summary {
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
}

.panel-header {
  margin-bottom: 0.85rem;
}

.panel-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  margin-bottom: 0.45rem;
}

.panel-profile .panel-badge {
  background: #dbeafe;
  color: var(--profile-accent);
}

.panel-yearly .panel-badge {
  background: #fef3c7;
  color: var(--yearly-accent);
}

.panel-options .panel-badge {
  background: #e2e8f0;
  color: var(--options-accent);
}

.panel-header h2 {
  margin: 0;
  font-size: 1rem;
}

.panel-desc {
  margin: 0.35rem 0 0;
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.4;
}

.field-list,
.computed-list {
  display: grid;
  gap: 0.65rem;
}

.computed-list {
  margin-top: 0.85rem;
  padding-top: 0.85rem;
  border-top: 1px dashed var(--yearly-border);
}

.computed-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.84rem;
  padding: 0.45rem 0.6rem;
  background: rgba(255, 255, 255, 0.7);
  border-radius: 8px;
}

.computed-row span:first-child {
  color: var(--muted);
}

.computed-row span:last-child {
  font-weight: 600;
  color: var(--yearly-accent);
  font-variant-numeric: tabular-nums;
}

label.stacked {
  display: grid;
  gap: 0.3rem;
  font-size: 0.85rem;
}

label.stacked span {
  font-weight: 500;
}

label.checkbox {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.75rem;
  font-size: 0.85rem;
}

input[type="text"] {
  width: 100%;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font: inherit;
  background: white;
}

.panel-profile input[type="text"]:focus {
  outline: 2px solid rgba(37, 99, 235, 0.2);
  border-color: var(--profile-accent);
}

.panel-yearly input[type="text"]:focus {
  outline: 2px solid rgba(180, 83, 9, 0.2);
  border-color: var(--yearly-accent);
}

#viewer {
  padding: 1rem;
  min-height: 0;
  height: 100%;
  overflow: auto;
  display: flex;
  align-items: flex-start;
  justify-content: center;
}

#pdfContainer {
  position: relative;
  width: fit-content;
  flex-shrink: 0;
  margin: 0;
  background: white;
  box-shadow: var(--shadow);
}

#pdfCanvas {
  display: block;
}

#overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.overlay-field {
  position: absolute;
  pointer-events: auto;
  border: 1px dashed transparent;
  background: rgba(255, 255, 200, 0.35);
  padding: 0;
  margin: 0;
  font-family: Helvetica, Arial, sans-serif;
  line-height: 1;
  white-space: nowrap;
  overflow: hidden;
  cursor: text;
}

.overlay-field.drag-mode {
  cursor: move;
  border-color: rgba(11, 110, 153, 0.6);
  background: rgba(11, 110, 153, 0.12);
}

.overlay-field:focus {
  outline: 2px solid var(--primary);
  background: rgba(255, 255, 255, 0.9);
}

.btn {
  border: none;
  border-radius: 8px;
  padding: 0.55rem 0.9rem;
  font: inherit;
  cursor: pointer;
}

.btn.primary {
  background: var(--primary);
  color: white;
}

.btn.primary:hover {
  background: var(--primary-dark);
}

.btn.secondary {
  background: #eef2f6;
  color: var(--text);
}

.btn.secondary:hover {
  background: #e2e8f0;
}

.snackbar {
  position: fixed;
  left: 50%;
  bottom: 1.5rem;
  transform: translateX(-50%) translateY(120%);
  z-index: 300;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 280px;
  max-width: min(520px, calc(100vw - 2rem));
  padding: 0.85rem 1rem;
  border-radius: 10px;
  background: #1e293b;
  color: #f8fafc;
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.28);
  transition: transform 0.28s ease, opacity 0.28s ease;
  opacity: 0;
}

.snackbar.visible {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.snackbar.success {
  background: #14532d;
}

.snackbar.error {
  background: #7f1d1d;
}

.snackbar-close {
  border: none;
  background: transparent;
  color: inherit;
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
  opacity: 0.8;
  padding: 0;
}

.snackbar-close:hover {
  opacity: 1;
}

.login-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.5rem;
  background:
    radial-gradient(circle at top, rgba(11, 110, 153, 0.12), transparent 55%),
    var(--bg);
}

.login-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: min(420px, 100%);
  padding: 2.5rem 2rem;
  border-radius: 16px;
  background: var(--panel);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  text-align: center;
}

.login-brand h1 {
  margin: 0;
}

.login-brand h1 {
  font-size: 1.5rem;
}

.login-desc {
  margin: 1.5rem 0 1.75rem;
  color: var(--muted);
  line-height: 1.5;
}

.login-error {
  margin: 0 0 1rem;
  padding: 0.75rem 0.9rem;
  border-radius: 8px;
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #991b1b;
  font-size: 0.9rem;
  line-height: 1.45;
  text-align: left;
  width: 100%;
}

.google-login {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: white;
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  transition: background 0.15s ease, box-shadow 0.15s ease;
}

.google-login:hover {
  background: #f8fafc;
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.08);
}

.google-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.user-menu {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: 0.25rem;
}

.user-email {
  max-width: 180px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.85rem;
  color: var(--muted);
}

@media (max-width: 960px) {
  main {
    grid-template-columns: 1fr;
  }

  #sidebar {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
}

body.mobile-gate-active .app-header {
  justify-content: center;
}

body.mobile-gate-active .app-header > div:first-child {
  text-align: center;
}