:root {
  --bu-scarlet: #cc0000;
  --bu-scarlet-dark: #990000;
  --bu-scarlet-soft: #ffe5e5;
  --bu-black: #1a1a1a;
  --bu-charcoal: #2d2d2d;
  --bu-white: #ffffff;
  --bu-cream: #faf7f2;
  --bu-gray: #6b6b6b;
  --bu-border: #e8e0d8;
  --shadow: 0 10px 30px rgba(26, 26, 26, 0.08);
  --radius: 16px;
  --font: "Inter", system-ui, sans-serif;
  --display: "Playfair Display", Georgia, serif;
}

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

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--bu-black);
  background:
    radial-gradient(circle at top right, rgba(204, 0, 0, 0.08), transparent 40%),
    linear-gradient(180deg, #fff8f8 0%, var(--bu-cream) 45%, #fff 100%);
}

button,
input {
  font: inherit;
}

.site-header {
  background: linear-gradient(135deg, var(--bu-scarlet) 0%, var(--bu-scarlet-dark) 100%);
  color: var(--bu-white);
  padding: 2rem 1.25rem 2.5rem;
  box-shadow: 0 8px 24px rgba(153, 0, 0, 0.25);
}

.header-inner {
  max-width: 900px;
  margin: 0 auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.crest {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--bu-white);
  color: var(--bu-scarlet);
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.4rem;
  border: 3px solid rgba(255, 255, 255, 0.35);
  box-shadow: inset 0 0 0 2px var(--bu-scarlet);
}

.brand-eyebrow {
  margin: 0 0 0.15rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  opacity: 0.9;
}

.site-header h1 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 700;
}

.tagline {
  margin: 1rem 0 0;
  max-width: 34rem;
  opacity: 0.95;
  line-height: 1.5;
}

.sync-status {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin: 1rem 0 0;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.28);
}

.sync-status::before {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: #ffd166;
}

.sync-status[data-state="synced"]::before {
  background: #7dffb3;
}

.sync-status[data-state="error"]::before,
.sync-status[data-state="local"]::before {
  background: #ffb4b4;
}

.container {
  max-width: 900px;
  margin: -1.5rem auto 3rem;
  padding: 0 1.25rem;
}

.progress-card,
.group-card {
  background: var(--bu-white);
  border: 1px solid var(--bu-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.progress-card {
  padding: 1.25rem 1.4rem 1.4rem;
}

.progress-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 0.9rem;
}

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

.progress-label {
  margin: 0.25rem 0 0;
  color: var(--bu-gray);
  font-size: 0.95rem;
}

.progress-percent {
  font-family: var(--display);
  font-size: 1.8rem;
  color: var(--bu-scarlet);
  line-height: 1;
}

.progress-track {
  height: 14px;
  background: #f0e8e0;
  border-radius: 999px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--bu-scarlet), #ff4d4d);
  border-radius: inherit;
  transition: width 0.35s ease;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1.25rem 0;
}

.btn {
  border: none;
  border-radius: 999px;
  padding: 0.7rem 1.15rem;
  cursor: pointer;
  font-weight: 600;
  transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease;
}

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

.btn:active {
  transform: translateY(0);
}

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

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

.btn-ghost {
  background: transparent;
  color: var(--bu-charcoal);
  border: 1px solid var(--bu-border);
}

.btn-ghost:hover {
  background: var(--bu-white);
  border-color: var(--bu-scarlet);
  color: var(--bu-scarlet);
}

.btn-small {
  padding: 0.4rem 0.8rem;
  font-size: 0.85rem;
}

.btn-danger {
  background: transparent;
  color: var(--bu-scarlet);
  border: 1px solid transparent;
}

.btn-danger:hover {
  background: var(--bu-scarlet-soft);
  border-color: #ffc9c9;
}

.copies-card {
  margin-bottom: 1.25rem;
}

.copies-header h2 {
  margin: 0;
  font-size: 1.1rem;
}

.copies-list {
  list-style: none;
  margin: 0.9rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.65rem;
}

.copy-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--bu-border);
  border-radius: 12px;
  background: #fffaf7;
}

.copy-meta {
  min-width: 0;
}

.copy-title {
  margin: 0;
  font-weight: 600;
}

.copy-stats {
  margin: 0.2rem 0 0;
  color: var(--bu-gray);
  font-size: 0.85rem;
}

.copies-empty {
  margin: 0.75rem 0 0;
  color: var(--bu-gray);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.groups {
  display: grid;
  gap: 1rem;
}

.group-card {
  overflow: hidden;
}

.group-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.2rem;
  background: linear-gradient(90deg, #fff5f5, #ffffff);
  border-bottom: 1px solid var(--bu-border);
}

.group-title-wrap {
  min-width: 0;
}

.group-title {
  margin: 0;
  font-size: 1.15rem;
  color: var(--bu-scarlet-dark);
}

.group-meta {
  margin: 0.35rem 0 0;
  color: var(--bu-gray);
  font-size: 0.9rem;
}

.group-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  justify-content: flex-end;
}

.item-list {
  list-style: none;
  margin: 0;
  padding: 0.35rem 0;
}

.item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.2rem;
  border-bottom: 1px solid #f3eee8;
}

.item:last-child {
  border-bottom: none;
}

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

.item.packed {
  background: #ececec;
  opacity: 0.7;
}

.item.packed .item-text {
  color: #7a7a7a;
}

.btn-packed {
  background: var(--bu-white);
  color: var(--bu-charcoal);
  border: 1px solid var(--bu-border);
  min-width: 4.6rem;
}

.btn-packed:hover {
  border-color: var(--bu-scarlet);
  color: var(--bu-scarlet);
}

.btn-packed.is-packed {
  background: #d8d8d8;
  color: #555;
  border-color: #cfcfcf;
}

.item-check {
  width: 1.2rem;
  height: 1.2rem;
  accent-color: var(--bu-scarlet);
  cursor: pointer;
  flex-shrink: 0;
}

.item-text {
  flex: 1;
  line-height: 1.4;
}

.empty-group {
  margin: 0;
  padding: 1.1rem 1.2rem 1.3rem;
  color: var(--bu-gray);
  font-size: 0.95rem;
}

.site-footer {
  text-align: center;
  padding: 1.5rem;
  color: var(--bu-gray);
  font-size: 0.9rem;
}

#prompt-dialog,
#password-dialog {
  border: none;
  border-radius: var(--radius);
  padding: 0;
  width: min(92vw, 420px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
}

#prompt-dialog::backdrop,
#password-dialog::backdrop {
  background: rgba(26, 26, 26, 0.45);
}

#prompt-form,
#password-form {
  padding: 1.35rem;
  display: grid;
  gap: 1rem;
}

#prompt-form h3,
#password-form h3 {
  margin: 0;
  color: var(--bu-scarlet-dark);
}

#prompt-form label,
#password-form label {
  display: grid;
  gap: 0.45rem;
  font-weight: 500;
}

#prompt-input,
#password-form input[type="password"] {
  border: 1px solid var(--bu-border);
  border-radius: 10px;
  padding: 0.7rem 0.85rem;
  outline: none;
}

#prompt-input:focus,
#password-form input[type="password"]:focus {
  border-color: var(--bu-scarlet);
  box-shadow: 0 0 0 3px rgba(204, 0, 0, 0.15);
}

.dialog-note {
  margin: -0.35rem 0 0;
  color: var(--bu-gray);
  font-size: 0.92rem;
  line-height: 1.45;
}

.login-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.25rem;
}

.login-shell {
  width: min(100%, 460px);
}

.login-card {
  background: var(--bu-white);
  border: 1px solid var(--bu-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
}

.login-brand {
  margin-bottom: 1rem;
}

.login-copy {
  margin: 0 0 1rem;
  color: var(--bu-gray);
  line-height: 1.5;
}

.login-form {
  display: grid;
  gap: 0.9rem;
}

.login-form label {
  display: grid;
  gap: 0.45rem;
  font-weight: 500;
}

.login-form input[type="password"] {
  border: 1px solid var(--bu-border);
  border-radius: 10px;
  padding: 0.7rem 0.85rem;
  outline: none;
}

.login-form input[type="password"]:focus {
  border-color: var(--bu-scarlet);
  box-shadow: 0 0 0 3px rgba(204, 0, 0, 0.15);
}

.login-error {
  margin: 0;
  color: var(--bu-scarlet-dark);
  font-size: 0.92rem;
}

.login-submit {
  width: 100%;
}

.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.6rem;
}

@media (max-width: 640px) {
  .group-header {
    flex-direction: column;
  }

  .group-actions {
    width: 100%;
  }
}