:root {
  --planner-bg: #f6f8fb;
  --planner-panel: #ffffff;
  --planner-text: #1f2328;
  --planner-muted: #68717a;
  --planner-line: #d8dee6;
  --planner-green: #245c42;
  --planner-green-soft: #edf5ef;
  --planner-coral: #b94a2f;
  --planner-blue: #2f6fd6;
  --planner-shadow: 0 16px 42px rgba(23, 29, 35, .08);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  color: var(--planner-text);
  font-family: "Segoe UI", "Trebuchet MS", sans-serif;
  background: linear-gradient(135deg, #dff7f4 0%, #f6f8fb 46%, #eef5fb 100%) fixed;
  background-size: cover;
}

button, a { font: inherit; }
a { color: inherit; }

.app { max-width: 1480px; margin: 0 auto; padding: 16px; }

.masthead {
  border: 1px solid #4a545f;
  border-radius: 18px;
  padding: 10px 12px 12px;
  box-shadow: 0 16px 42px rgba(17, 22, 29, .28);
  background:
    radial-gradient(120% 90% at -10% -30%, rgba(35, 86, 161, .38) 0%, transparent 60%),
    radial-gradient(120% 90% at 120% -20%, rgba(32, 170, 158, .34) 0%, transparent 58%),
    radial-gradient(95% 90% at 50% 120%, rgba(74, 93, 58, .26) 0%, transparent 64%),
    linear-gradient(124deg, #0b234a 0%, #17365f 34%, #195a68 66%, #1b7a70 100%);
}

.toolbar { display: flex; justify-content: space-between; align-items: center; padding: 2px 4px; }
.brand-wrap, .planner-profile-wrap { position: relative; }
.brand-menu-button { border: 0; background: transparent; display: inline-flex; align-items: center; gap: 8px; cursor: pointer; color: #edf3fa; font: inherit; padding: 0; }
.brand { font-size: 20px; font-weight: 700; }
.brand-menu-caret { color: #b7c4d4; }
.brand-menu { position: absolute; z-index: 30; left: 0; top: calc(100% + 8px); min-width: 220px; border: 1px solid var(--planner-line); border-radius: 12px; padding: 8px; background: var(--planner-panel); box-shadow: var(--planner-shadow); }
.brand-menu[hidden] { display: none; }
.brand-menu a, .brand-menu button { display: block; width: 100%; border: 0; border-radius: 8px; padding: 9px 10px; color: var(--planner-text); background: transparent; font: inherit; text-align: left; text-decoration: none; cursor: pointer; }
.brand-menu a:hover, .brand-menu button:hover { background: #f4f7fb; }
.brand-menu-divider { height: 1px; margin: 6px 2px; background: var(--planner-line); }

.planner-profile-wrap { position: relative; }
.profile-button {
  width: 32px; height: 32px; display: grid; place-items: center;
  border: 1px solid rgba(237, 243, 250, .78); border-radius: 50%; color: #edf3fa;
  background: transparent; cursor: pointer;
}
.profile-button:hover, .profile-button[aria-expanded="true"] { color: #17365f; background: #edf3fa; }
.profile-button svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; }

.profile-menu {
  position: absolute; z-index: 5; top: calc(100% + 10px); right: 0; width: 220px;
  display: grid; gap: 7px; padding: 16px; border: 1px solid var(--planner-line);
  border-radius: 14px; background: var(--planner-panel); box-shadow: var(--planner-shadow);
}
.profile-menu[hidden], .login-toast[hidden] { display: none; }
.profile-menu strong { font-size: 16px; }
.profile-menu span { color: var(--planner-muted); font-size: 13px; line-height: 1.35; }
.profile-menu button { margin-top: 5px; border: 0; border-radius: 9px; padding: 9px 12px; color: #fff; background: var(--planner-green); cursor: pointer; }

.planner-content { max-width: 1120px; margin: 0 auto; padding: 22px 0 64px; }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.planner-status { margin: 20px 4px; color: var(--planner-muted); font-size: 14px; }
.planner-message { padding: 20px; border: 1px solid var(--planner-line); border-radius: 14px; background: var(--planner-panel); }
.planner-message a { color: var(--planner-blue); font-weight: 700; }
.participant-frame { position: fixed; inset: 0; z-index: 60; width: 100%; height: 100%; border: 0; background: transparent; }
.participant-frame[hidden] { display: none; }

.planner-skeleton { display: grid; gap: 14px; }
.planner-skeleton-card { overflow: hidden; border: 1px solid var(--planner-line); border-radius: 18px; background: var(--planner-panel); box-shadow: var(--planner-shadow); }
.planner-skeleton-event { display: grid; grid-template-columns: 72px minmax(0, 1fr) auto; gap: 18px; padding: 20px 22px; }
.planner-skeleton-copy { display: grid; align-content: center; gap: 9px; }
.planner-skeleton-block { position: relative; display: block; overflow: hidden; border-radius: 8px; background: #e7edf4; }
.planner-skeleton-block::after { position: absolute; inset: 0; content: ""; transform: translateX(-100%); background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .72), transparent); animation: planner-skeleton-shimmer 1.35s ease-in-out infinite; }
.planner-skeleton-date { width: 60px; height: 60px; border-radius: 12px; }
.planner-skeleton-title { width: min(520px, 72%); height: 26px; }
.planner-skeleton-location { width: min(430px, 58%); height: 14px; }
.planner-skeleton-facts { width: 220px; height: 13px; }
.planner-skeleton-action { width: 92px; height: 30px; align-self: center; border-radius: 999px; }
.planner-skeleton-distances { display: grid; gap: 10px; padding: 0 22px 20px 112px; }
.planner-skeleton-distance { width: 100%; height: 42px; border-top: 1px solid var(--planner-line); border-radius: 0; }
.planner-skeleton-distance-short { width: 78%; }
.planner-skeleton-card-short .planner-skeleton-distance-short { width: 52%; }
@keyframes planner-skeleton-shimmer { to { transform: translateX(100%); } }

.event-tree { display: grid; gap: 14px; }
.event-card { overflow: hidden; border: 1px solid var(--planner-line); border-radius: 18px; background: var(--planner-panel); box-shadow: var(--planner-shadow); }
.event-row { display: grid; grid-template-columns: 72px minmax(0, 1fr) auto; gap: 18px; padding: 20px 22px; }
.event-date { width: 60px; height: 60px; display: grid; align-content: center; justify-items: center; gap: 1px; border: 1px solid #e9a490; border-radius: 12px; color: var(--planner-coral); background: #fff8f4; line-height: 1; }
.event-date strong { font-size: 24px; }
.event-date span { font-size: 11px; font-weight: 800; letter-spacing: .05em; }
.event-toggle, .distance-toggle { width: 34px; min-height: 34px; display: grid; place-items: center; padding: 0; border: 0; color: inherit; background: transparent; cursor: pointer; }
.event-copy, .distance-copy { min-width: 0; display: grid; gap: 5px; }
.event-actions { display: flex; align-items: center; justify-content: flex-end; gap: 10px; }
.event-registration { display: inline-flex; align-items: center; justify-content: center; height: 30px; min-width: 92px; padding: 0 12px; border: 1px solid var(--planner-line); border-radius: 999px; color: var(--planner-muted); background: var(--planner-panel); font-size: 12px; white-space: nowrap; text-decoration: none; }
.event-registration:hover { color: var(--planner-green); border-color: #b9d8ce; background: var(--planner-green-soft); }
.event-title { width: fit-content; color: var(--planner-text); font-size: clamp(20px, 3vw, 30px); font-weight: 800; letter-spacing: -.035em; text-decoration: none; }
.event-title:hover, .distance-title:hover { color: var(--planner-blue); }
.event-location { display: flex; align-items: center; gap: 5px; min-width: 0; color: var(--planner-muted); font-size: 14px; line-height: 1.35; }
.event-location svg { width: 15px; height: 15px; flex: 0 0 15px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.event-facts { display: flex; flex-wrap: wrap; gap: 7px 18px; margin-top: 2px; color: var(--planner-green); font-size: 13px; font-weight: 700; }
.event-facts span + span { position: relative; }
.event-facts span + span::before { content: "·"; position: absolute; left: -12px; color: var(--planner-line); }
.chevron { width: 10px; height: 10px; flex: 0 0 10px; border-right: 2px solid var(--planner-green); border-bottom: 2px solid var(--planner-green); transform: rotate(45deg) translateY(-3px); transition: transform .18s ease; }
.is-expanded > .event-row .chevron, .distance-card.is-expanded .chevron { transform: rotate(225deg) translate(-1px, -1px); }

.distance-tree { display: grid; gap: 0; padding: 0 22px 20px 112px; }
.event-card:not(.is-expanded) .distance-tree { display: none; }
.distance-card { position: relative; border-top: 1px solid var(--planner-line); }
.distance-link { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 16px; padding: 13px 0 8px; color: var(--planner-text); text-decoration: none; }
.distance-title { width: fit-content; color: var(--planner-text); font-size: 15px; font-weight: 700; letter-spacing: -.01em; }
.stage-badge { display: inline-flex; align-items: center; margin-left: 6px; padding: 1px 6px; border: 1px solid #9ec6f1; border-radius: 999px; color: #1f4f8a; background: #edf5ff; font-size: 10px; font-weight: 700; line-height: 1.2; letter-spacing: .03em; vertical-align: middle; }
.distance-metrics { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 5px 12px; color: var(--planner-muted); font-size: 12px; text-align: right; }
.distance-metrics span + span { position: relative; }
.distance-metrics span + span::before { content: "·"; position: absolute; left: -10px; color: var(--planner-line); }
.distance-details { display: flex; flex-wrap: wrap; gap: 7px; padding: 0 0 12px; }
.friend-row { display: inline-flex; max-width: 100%; align-items: center; gap: 8px; padding: 7px 10px; border: 1px solid #e0e8f1; border-radius: 999px; color: inherit; background: #fbfdff; cursor: pointer; }
.friend-row:hover { border-color: #b9d8ce; background: var(--planner-green-soft); }
.friend-name { color: var(--planner-text); font-size: 13px; font-weight: 700; white-space: nowrap; }
.friend-forecast { display: inline-flex; color: var(--planner-green); font-size: 13px; font-weight: 700; white-space: nowrap; }
.friend-forecast small { color: var(--planner-muted); font-size: 12px; font-weight: 400; }

@media (max-width: 640px) {
  .app { padding: 10px; }
  .brand { font-size: 16px; }
  .planner-content { padding-top: 20px; }
  .event-row { grid-template-columns: 52px minmax(0, 1fr) auto; gap: 12px; padding: 16px 14px; }
  .event-date { width: 50px; height: 54px; }
  .event-date strong { font-size: 20px; }
  .event-title { font-size: 20px; }
  .event-location { font-size: 13px; }
  .event-facts { gap: 6px 14px; font-size: 12px; }
  .event-actions { gap: 5px; }
  .event-registration { min-width: 0; padding: 0 8px; font-size: 10px; }
  .planner-skeleton-event { grid-template-columns: 52px minmax(0, 1fr) auto; gap: 12px; padding: 16px 14px; }
  .planner-skeleton-date { width: 50px; height: 54px; }
  .planner-skeleton-title { width: 86%; height: 21px; }
  .planner-skeleton-location { width: 72%; }
  .planner-skeleton-facts { width: 52%; }
  .planner-skeleton-action { width: 42px; }
  .planner-skeleton-distances { padding: 0 14px 14px 76px; }
  .distance-tree { padding: 0 14px 14px 76px; }
  .distance-link { grid-template-columns: 1fr; gap: 6px; padding-top: 14px; }
  .distance-metrics { justify-content: flex-start; text-align: left; line-height: 1.45; }
  .distance-metrics span + span::before { display: none; }
  .friend-row { padding: 7px 9px; }
  .distance-title { font-size: 16px; }
  .distance-facts { line-height: 1.45; }
  .profile-menu { right: -2px; }
}

@media (prefers-reduced-motion: reduce) {
  .planner-skeleton-block::after { animation: none; }
}