*, *::before, *::after { box-sizing: border-box; }
  :root {
    --black: #080808;
    --coal: #111111;
    --panel: #171717;
    --paper: #f4f0e7;
    --paper-2: #e7dece;
    --ink: #101010;
    --muted: #756e64;
    --line: rgba(244,240,231,0.16);
    --line-dark: rgba(8,8,8,0.16);
    --acid: #d7ff3f;
    --blue: #6aa7ff;
    --pink: #ff6f91;
    --mint: #62d5a2;
    --amber: #f4bd50;
    --violet: #a78bfa;
    --radius: 10px;
    --tab-height: 53px;
    --legend-height: 55px;
    --sticky-gap: 20px;
  }

  html { scroll-behavior: smooth; }
  body {
    margin: 0;
    background: var(--black);
    color: var(--paper);
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    letter-spacing: 0;
  }
  a { color: inherit; }
  button { font: inherit; }

  .shell { min-height: 100vh; background:
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px) 0 0 / 56px 56px,
    linear-gradient(180deg, rgba(255,255,255,0.03) 1px, transparent 1px) 0 0 / 56px 56px,
    var(--black);
  }
  header {
    max-width: 1180px;
    margin: 0 auto;
    padding: 28px 22px 34px;
  }
  .topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    border-bottom: 1px solid var(--line);
    padding-bottom: 18px;
  }
  .brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 12px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.14em;
  }
  .mark {
    width: 28px;
    height: 28px;
    display: grid;
    place-items: center;
    color: var(--black);
    background: var(--acid);
    border-radius: 50%;
    font-weight: 900;
    letter-spacing: 0;
  }
  .ticket-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 9px 13px;
    color: var(--paper);
    text-decoration: none;
    font-size: 12px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
  }
  .ticket-link:hover { background: var(--paper); color: var(--black); }
  .top-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
    flex-wrap: wrap;
  }
  .admin-toolbar {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    flex-wrap: wrap;
  }
  .admin-button {
    appearance: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 35px;
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 9px 13px;
    background: transparent;
    color: var(--paper);
    font-size: 11px;
    font-weight: 900;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    cursor: pointer;
  }
  .admin-button:hover,
  .admin-button.primary {
    background: var(--acid);
    border-color: var(--acid);
    color: var(--black);
  }
  .admin-button:disabled {
    cursor: progress;
    opacity: 0.7;
  }
  .admin-status {
    color: rgba(244,240,231,0.62);
    font-size: 11px;
    font-weight: 900;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .hero {
    padding-top: 46px;
  }
  h1 {
    margin: 0;
    max-width: 1120px;
    font-size: 104px;
    line-height: 0.92;
    letter-spacing: 0;
    font-weight: 900;
    text-transform: uppercase;
  }
  .hero-copy {
    max-width: 620px;
    color: rgba(244,240,231,0.7);
    font-size: 16px;
    line-height: 1.7;
    margin: 22px 0 0;
  }
  .tab-nav {
    position: sticky;
    top: 0;
    z-index: 10;
    min-height: var(--tab-height);
    background: rgba(8,8,8,0.86);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line);
  }
  .tab-inner {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 22px;
    display: flex;
    gap: 8px;
  }
  .tab-btn {
    appearance: none;
    border: 0;
    background: transparent;
    color: rgba(244,240,231,0.58);
    padding: 17px 12px;
    font-size: 12px;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    cursor: pointer;
    border-bottom: 3px solid transparent;
  }
  .tab-btn.active { color: var(--paper); border-bottom-color: var(--acid); }

  .content-flow {
    max-width: 1180px;
    margin: 0 auto;
    padding: 30px 22px 72px;
  }
  .scroll-section {
    scroll-margin-top: calc(var(--tab-height) + var(--legend-height) + var(--sticky-gap));
  }
  .legend-wrap {
    position: sticky;
    top: var(--tab-height);
    z-index: 9;
    margin: -30px -22px 30px;
    padding: 10px 22px;
    background: rgba(8,8,8,0.9);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(18px);
  }
  .legend {
    max-width: 1180px;
    margin: 0 auto;
    display: flex;
    gap: 8px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .legend::-webkit-scrollbar { display: none; }
  .legend-item, .stay-card, .kiv-group, .note-box {
    border: 1px solid var(--line);
    background: rgba(255,255,255,0.035);
    border-radius: var(--radius);
  }
  .legend-item {
    display: flex;
    align-items: center;
    gap: 9px;
    flex: 0 0 auto;
    min-width: 132px;
    padding: 9px 11px;
    color: rgba(244,240,231,0.76);
    font-size: 11px;
    font-weight: 900;
    letter-spacing: 0.1em;
    text-transform: uppercase;
  }
  .pip { width: 10px; height: 10px; border-radius: 50%; flex: 0 0 auto; }

  .section-kicker {
    color: var(--acid);
    font-size: 11px;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin: 22px 0 12px;
  }
  .stay-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
    margin-bottom: 34px;
  }
  .stay-card {
    padding: 16px;
    min-height: 180px;
  }
  .stay-head {
    display: flex;
    justify-content: space-between;
    gap: 14px;
    align-items: flex-start;
    margin-bottom: 12px;
  }
  .stay-head h3 {
    margin: 0;
    font-size: 18px;
    letter-spacing: 0;
    line-height: 1.15;
  }
  .stay-head span {
    flex: 0 0 auto;
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 5px 8px;
    color: rgba(244,240,231,0.78);
    font-size: 10px;
    font-weight: 900;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }
  .stay-details p {
    margin: 0 0 9px;
    color: rgba(244,240,231,0.68);
    font-size: 13px;
    line-height: 1.55;
  }
  .stay-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
  }
  .stay-card a, .event-link, .note-box a {
    color: var(--acid);
    text-decoration: none;
    border-bottom: 1px solid rgba(215,255,63,0.45);
  }
  .stay-card a:hover, .event-link:hover, .note-box a:hover { border-bottom-color: var(--acid); }

  .kiv-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
    margin-bottom: 34px;
  }
  .kiv-group {
    padding: 16px;
  }
  .kiv-group h3 {
    margin: 0 0 12px;
    font-size: 18px;
    letter-spacing: 0;
  }
  .kiv-list {
    display: grid;
    gap: 8px;
  }
  .kiv-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    min-height: 44px;
    border: 1px solid rgba(244,240,231,0.12);
    border-radius: 8px;
    padding: 10px 12px;
    color: rgba(244,240,231,0.82);
    text-decoration: none;
    background: rgba(8,8,8,0.22);
  }
  .kiv-link:hover {
    border-color: rgba(215,255,63,0.5);
    background: rgba(255,255,255,0.06);
  }
  .kiv-link span {
    min-width: 0;
    font-size: 13px;
    font-weight: 800;
    line-height: 1.3;
    overflow-wrap: anywhere;
  }
  .kiv-actions {
    display: flex;
    flex: 0 0 auto;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 8px 10px;
  }
  .kiv-action {
    flex: 0 0 auto;
    color: var(--acid);
    font-size: 10px;
    font-weight: 900;
    letter-spacing: 0.08em;
    text-decoration: none;
    text-transform: uppercase;
  }
  .kiv-action:hover { text-decoration: underline; }
  .editable-kiv {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
  .editable-kiv .kiv-editor {
    grid-column: 1 / -1;
  }
  .kiv-editor {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
    gap: 10px;
    width: 100%;
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid var(--line);
  }
  .kiv-editor .edit-actions {
    grid-column: 1 / -1;
    margin-top: 0;
  }
  .add-kiv {
    margin: 10px 0 0;
  }

  .day-block {
    display: grid;
    grid-template-columns: 170px minmax(0, 1fr);
    gap: 28px;
    padding: 42px 0;
    border-top: 1px solid var(--line);
  }
  .day-index {
    position: sticky;
    top: calc(var(--tab-height) + var(--legend-height) + var(--sticky-gap));
    align-self: start;
  }
  .day-number {
    font-family: "Space Grotesk", Inter, sans-serif;
    font-size: 86px;
    line-height: 0.8;
    letter-spacing: 0;
    font-weight: 700;
    color: transparent;
    -webkit-text-stroke: 1px var(--paper);
  }
  .day-date {
    margin-top: 16px;
    color: rgba(244,240,231,0.52);
    font-size: 11px;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.16em;
  }
  .day-title {
    margin: 0 0 14px;
    font-size: clamp(27px, 5vw, 58px);
    line-height: 0.94;
    font-weight: 900;
    letter-spacing: 0;
    text-transform: uppercase;
  }
  .route-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 7px;
    margin: 0 0 24px;
    color: rgba(244,240,231,0.58);
    font-size: 12px;
    line-height: 1.6;
  }
  .route-stop {
    color: var(--paper);
    font-weight: 800;
  }
  .timeline {
    position: relative;
    padding-left: 24px;
  }
  .timeline::before {
    content: "";
    position: absolute;
    left: 6px;
    top: 7px;
    bottom: 7px;
    width: 1px;
    background: var(--line);
  }
  .event, .travel-row {
    position: relative;
    margin: 0 0 15px;
  }
  .event {
    display: grid;
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 16px;
    padding: 15px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255,255,255,0.035);
  }
  .event::before, .travel-row::before {
    content: "";
    position: absolute;
    left: -22px;
    top: 22px;
    width: 11px;
    height: 11px;
    border-radius: 50%;
    background: var(--paper);
    border: 2px solid var(--black);
  }
  .event.drive::before { background: var(--blue); }
  .event.food::before { background: var(--amber); }
  .event.coffee::before { background: var(--pink); }
  .event.concert::before { background: var(--acid); }
  .event.hotel::before { background: var(--violet); }
  .event.run::before { background: var(--mint); }
  .event.admin::before { background: var(--paper); }
  .event-time {
    color: rgba(244,240,231,0.56);
    font-size: 11px;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    line-height: 1.45;
  }
  .event-name {
    font-size: 17px;
    font-weight: 900;
    letter-spacing: 0;
    margin: 0 0 6px;
  }
  .event-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
  }
  .event-note {
    margin: 7px 0 0;
    color: rgba(244,240,231,0.68);
    font-size: 13px;
    line-height: 1.65;
  }
  .editable-timeline {
    min-height: 70px;
  }
  .editable-event {
    cursor: grab;
    border-color: rgba(215,255,63,0.5);
  }
  .editable-event.dragging {
    opacity: 0.48;
  }
  .event-editor {
    margin-top: 14px;
    padding-top: 12px;
    border-top: 1px solid var(--line);
  }
  .edit-grid {
    display: grid;
    grid-template-columns: minmax(0, 150px) minmax(0, 150px) minmax(0, 1fr);
    gap: 10px;
  }
  .edit-grid label,
  .kiv-editor label,
  .admin-login label {
    display: grid;
    gap: 6px;
    color: rgba(244,240,231,0.66);
    font-size: 10px;
    font-weight: 900;
    letter-spacing: 0.1em;
    text-transform: uppercase;
  }
  .edit-grid input,
  .edit-grid select,
  .edit-grid textarea,
  .kiv-editor input,
  .admin-login input {
    width: 100%;
    min-width: 0;
    border: 1px solid rgba(244,240,231,0.2);
    border-radius: 8px;
    background: rgba(8,8,8,0.46);
    color: var(--paper);
    padding: 9px 10px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0;
  }
  .edit-grid textarea {
    resize: vertical;
    line-height: 1.45;
  }
  .edit-wide { grid-column: span 3; }
  .edit-actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
  }
  .edit-actions button,
  .add-event,
  .admin-submit,
  .admin-close {
    appearance: none;
    border: 1px solid rgba(244,240,231,0.2);
    border-radius: 999px;
    background: transparent;
    color: var(--paper);
    padding: 7px 10px;
    font-size: 10px;
    font-weight: 900;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    cursor: pointer;
  }
  .edit-actions button:hover,
  .add-event:hover,
  .admin-submit:hover,
  .admin-close:hover {
    background: var(--paper);
    color: var(--black);
  }
  .drag-handle {
    display: inline-flex;
    align-items: center;
    border: 1px dashed rgba(215,255,63,0.55);
    border-radius: 999px;
    padding: 7px 10px;
    color: var(--acid);
    font-size: 10px;
    font-weight: 900;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    user-select: none;
  }
  .add-event {
    width: 100%;
    border-style: dashed;
    border-color: rgba(215,255,63,0.46);
    color: var(--acid);
    min-height: 42px;
    margin: 0 0 15px;
  }
  .tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin: 8px 0 0;
  }
  .tag {
    border-radius: 999px;
    padding: 3px 7px;
    font-size: 9px;
    font-weight: 900;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--black);
  }
  .tag-booked { background: var(--acid); }
  .tag-warn { background: #ff8a65; }
  .tag-cash { background: var(--amber); }
  .tag-pork { background: var(--pink); }
  .tag-tbc { background: var(--violet); }
  .tag-parking { background: var(--blue); }
  .tag-run { background: var(--mint); }
  .travel-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    padding: 3px 0 8px 15px;
    color: rgba(244,240,231,0.56);
    font-size: 12px;
  }
  .travel-row::before {
    top: 8px;
    background: transparent;
    border: 1px dashed rgba(244,240,231,0.55);
  }
  .travel-pill {
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 5px 9px;
    color: var(--paper);
    font-weight: 800;
  }
  .note-box {
    padding: 15px;
    margin: 14px 0 0;
    color: rgba(244,240,231,0.72);
    font-size: 13px;
    line-height: 1.65;
  }
  .note-box strong { color: var(--paper); }
  .note-warn { border-color: rgba(255,138,101,0.52); }
  .note-info { border-color: rgba(215,255,63,0.44); }

  .packing-head {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 16px;
    align-items: center;
    padding: 18px;
    margin: 42px 0 14px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255,255,255,0.035);
  }
  .progress-wrap {
    height: 8px;
    background: rgba(244,240,231,0.14);
    border-radius: 999px;
    overflow: hidden;
  }
  .progress-bar {
    width: 0%;
    height: 100%;
    background: var(--acid);
    border-radius: inherit;
    transition: width 0.2s ease;
  }
  .pack-label {
    color: rgba(244,240,231,0.68);
    font-size: 12px;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.12em;
  }
  .packing-actions {
    display: flex;
    gap: 10px;
    align-items: center;
    justify-content: space-between;
  }
  .pack-reset {
    border: 1px solid var(--line);
    background: transparent;
    color: var(--paper);
    border-radius: 999px;
    padding: 9px 12px;
    font-size: 11px;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    cursor: pointer;
  }
  .pack-reset:hover { background: var(--paper); color: var(--black); }
  .pack-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }
  .pack-section {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255,255,255,0.035);
    overflow: hidden;
  }
  .pack-section h3 {
    margin: 0;
    padding: 15px;
    border-bottom: 1px solid var(--line);
    font-size: 16px;
    letter-spacing: 0;
  }
  .pack-items { padding: 8px; }
  .pack-item {
    appearance: none;
    width: 100%;
    border: 0;
    background: transparent;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 8px;
    border-radius: 8px;
    cursor: pointer;
    user-select: none;
    color: rgba(244,240,231,0.78);
    font-size: 13px;
    line-height: 1.4;
    text-align: left;
  }
  .pack-item:hover { background: rgba(255,255,255,0.06); }
  .pack-item:focus-visible {
    outline: 2px solid var(--acid);
    outline-offset: 2px;
  }
  .pack-item.checked { opacity: 0.48; }
  .pack-box {
    width: 18px;
    height: 18px;
    display: grid;
    place-items: center;
    flex: 0 0 auto;
    border: 1px solid rgba(244,240,231,0.38);
    border-radius: 5px;
    color: var(--black);
    font-size: 12px;
    font-weight: 900;
  }
  .pack-item.checked .pack-box { background: var(--acid); border-color: var(--acid); }
  .pack-box span { display: none; }
  .pack-item.checked .pack-box span { display: inline; }
  .pack-item.checked .pack-text { text-decoration: line-through; }

  footer {
    border-top: 1px solid var(--line);
    padding: 28px 22px;
    color: rgba(244,240,231,0.52);
    font-size: 12px;
    text-align: center;
  }

  .back-to-top {
    position: fixed;
    right: 22px;
    bottom: 22px;
    z-index: 30;
    width: 46px;
    height: 46px;
    display: grid;
    place-items: center;
    border: 1px solid var(--line);
    border-radius: 50%;
    background: rgba(8,8,8,0.86);
    color: var(--paper);
    font-size: 22px;
    font-weight: 900;
    line-height: 1;
    cursor: pointer;
    opacity: 0;
    pointer-events: none;
    transform: translateY(8px);
    transition: opacity 0.18s ease, transform 0.18s ease, background 0.18s ease, color 0.18s ease;
    backdrop-filter: blur(18px);
  }
  .back-to-top.visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }
  .back-to-top:hover {
    background: var(--paper);
    color: var(--black);
  }
  .back-to-top:focus-visible {
    outline: 2px solid var(--acid);
    outline-offset: 3px;
  }
  .admin-modal {
    position: fixed;
    inset: 0;
    z-index: 50;
    display: grid;
    place-items: center;
    padding: 20px;
    background: rgba(8,8,8,0.72);
    backdrop-filter: blur(12px);
  }
  .admin-login {
    width: min(100%, 380px);
    display: grid;
    gap: 14px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--coal);
    padding: 18px;
    box-shadow: 0 24px 70px rgba(0,0,0,0.42);
  }
  .admin-login-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
  }
  .admin-login h2 {
    margin: 0;
    font-size: 24px;
    line-height: 1;
    text-transform: uppercase;
  }
  .admin-close {
    width: 32px;
    height: 32px;
    padding: 0;
  }
  .admin-submit {
    min-height: 40px;
    background: var(--acid);
    border-color: var(--acid);
    color: var(--black);
  }
  .login-status {
    margin: 0;
    color: var(--pink);
    font-size: 12px;
    font-weight: 800;
  }

  @media (max-width: 860px) {
    h1 { font-size: 72px; }
    .day-block { grid-template-columns: 1fr; }
    .day-index { position: static; display: flex; gap: 16px; align-items: end; }
    .day-number { font-size: 60px; }
    .day-date { margin-top: 0; padding-bottom: 4px; }
    .event { grid-template-columns: 1fr; gap: 6px; }
    .edit-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .edit-wide { grid-column: span 2; }
  }
  @media (max-width: 620px) {
    header { padding-top: 18px; }
    .topbar { align-items: flex-start; flex-direction: column; }
    .top-actions { justify-content: flex-start; }
    .hero { padding-top: 34px; }
    h1 { font-size: 54px; }
    .stay-grid, .kiv-grid, .pack-grid { grid-template-columns: 1fr; }
    .stay-head { display: block; }
    .stay-head span { display: inline-flex; margin-top: 10px; }
    .legend-wrap { padding-left: 14px; padding-right: 14px; }
    .legend-item { min-width: 112px; }
    .tab-inner { overflow-x: auto; }
    .tab-btn { white-space: nowrap; }
    main { padding-bottom: 48px; }
    .packing-head { grid-template-columns: 1fr; }
    .edit-grid, .kiv-editor { grid-template-columns: 1fr; }
    .edit-wide, .kiv-editor .edit-actions { grid-column: auto; }
    .editable-kiv { grid-template-columns: 1fr; }
    .kiv-actions { justify-content: flex-start; }
    .back-to-top {
      right: 14px;
      bottom: 14px;
      width: 44px;
      height: 44px;
    }
  }