/* App shell: root variables, icon mapping, topbar, sidebar, timeline and page layout. Load order matters: this file must come first. */

/*
 * RelayTree UI settings
 * Icon source: relaytree/src/icons
 * Runtime path: /icons/<file>, served by server.py.
 */
:root {
  color-scheme: light;
  --icon-menu: url("/icons/menu-svgrepo-com.svg");
  --icon-home: url("/icons/home-svgrepo-com.svg");
  --icon-reels: url("/icons/clapperboard-play-svgrepo-com.svg");
  --icon-chat: url("/icons/message-pending-svgrepo-com.svg");
  --icon-search: url("/icons/search-alt-1-svgrepo-com.svg");
  --icon-heart: url("/icons/heart-alt-svgrepo-com.svg");
  --icon-pen: url("/icons/user-pen-alt-1-svgrepo-com.svg");
  --icon-image: url("/icons/image-plus-svgrepo-com.svg");
  --icon-gif: url("/icons/gif-svgrepo-com.svg");
  --icon-link: url("/icons/link-alt-1-svgrepo-com.svg");
  --icon-import: url("/icons/import-svgrepo-com.svg");
  --icon-edit: url("/icons/edit-2-svgrepo-com.svg");
  --icon-select: url("/icons/check-svgrepo-com.svg");
  --icon-camera: url("/icons/file-arrow-up-alt-svgrepo-com.svg");
  --icon-tag: url("/icons/tag-svgrepo-com.svg");
  --icon-quote: url("/icons/quote-svgrepo-com.svg");
  --icon-view-list: url("/icons/view-list-svgrepo-com.svg");
  --icon-view-rows: url("/icons/view-rows-svgrepo-com.svg");
  --icon-view-card: url("/icons/square-svgrepo-com.svg");
  --icon-moon-space: url("/icons/moon-space-svgrepo-com.svg");
  --icon-hierarchy: url("/icons/hierarchy-svgrepo-com.svg");
  --icon-dot-menu: url("/icons/dot-menu-more-2-svgrepo-com.svg");
  --icon-arrow-area-down: url("/icons/arrow-area-down-short-wide-svgrepo-com.svg");
  --icon-arrow-area-up: url("/icons/arrow-area-up-short-wide-svgrepo-com.svg");
  --icon-up-double: url("/icons/up-double-svgrepo-com.svg");
  --icon-torch-runner: url("/icons/man-running-with-olympic-torch-svgrepo-com.svg");
  --icon-filter: url("/icons/filter-svgrepo-com.svg");
  --icon-sort: url("/icons/sort-1-svgrepo-com.svg");
  --icon-category: url("/icons/category-svgrepo-com.svg");

  --bg: #ffffff;
  --panel: #ffffff;
  --ink: #0f1419;
  --muted: #536471;
  --line: #eff3f4;
  --line-strong: #d8e1e6;
  --soft: #f7f9f9;
  --accent: #007a55;
  --accent-dark: #005f45;
  --accent-soft: #e6f6ef;
  --danger: #b4232f;
  --spark: #00935f;
  --spark-soft: #e6f6ef;
  --captivated: #9a7411;
  --captivated-soft: #fdf3d7;
  --rail-width: 58px;
  --rail-expanded-width: 168px;
  --topbar-height: 66px;
  --timeline-width: 990px;
  --reader-width: 820px;
  --reader-dynamic-width: min(100%, var(--reader-width));
  --reader-dynamic-left: max(0px, calc((100vw - var(--reader-width)) / 2));
  --shadow: 0 16px 48px rgba(15, 20, 25, 0.12);
  --font-ui: "Pretendard", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  --font-content: var(--font-ui);
  --font-data: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --font-weight-regular: 400;
  --font-weight-body: 450;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-heading: 760;
  --font-weight-heavy: 820;
  --app-font: var(--font-ui);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--app-font);
  -webkit-font-smoothing: antialiased;
}

button,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.relaytree-app {
  min-height: 100vh;
}

.app-icon {
  --icon-size: 22px;
  width: var(--icon-size);
  height: var(--icon-size);
  display: inline-block;
  flex: 0 0 var(--icon-size);
  background-color: transparent;
  background-image: var(--icon-url);
  background-position: center;
  background-repeat: no-repeat;
  background-size: contain;
}

.icon-menu { --icon-url: var(--icon-menu); }
.icon-home { --icon-url: var(--icon-home); }
.icon-reels { --icon-url: var(--icon-reels); }
.icon-chat { --icon-url: var(--icon-chat); }
.icon-search { --icon-url: var(--icon-search); }
.icon-heart { --icon-url: var(--icon-heart); }
.icon-pen { --icon-url: var(--icon-pen); }
.icon-image { --icon-url: var(--icon-image); }
.icon-gif { --icon-url: var(--icon-gif); }
.icon-link { --icon-url: var(--icon-link); }
.icon-import { --icon-url: var(--icon-import); }
.icon-edit { --icon-url: var(--icon-edit); }
.icon-select { --icon-url: var(--icon-select); }
.icon-camera { --icon-url: var(--icon-camera); }
.icon-tag,
.icon-flag { --icon-url: var(--icon-tag); }
.icon-quote { --icon-url: var(--icon-quote); }
.icon-view-list { --icon-url: var(--icon-view-list); }
.icon-view-rows { --icon-url: var(--icon-view-rows); }
.icon-view-card { --icon-url: var(--icon-view-card); }
.icon-moon-space { --icon-url: var(--icon-moon-space); }
.icon-hierarchy { --icon-url: var(--icon-hierarchy); }
.icon-dot-menu { --icon-url: var(--icon-dot-menu); }
.icon-up-double { --icon-url: var(--icon-up-double); }
.icon-torch-runner { --icon-url: var(--icon-torch-runner); }
.icon-filter { --icon-url: var(--icon-filter); }
.icon-sort { --icon-url: var(--icon-sort); }
.icon-category { --icon-url: var(--icon-category); }

.app-topbar {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 70;
  min-height: var(--topbar-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  border-bottom: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  padding: 0 28px;
}

.topbar-left,
.topbar-actions {
  display: flex;
  align-items: center;
  min-width: 0;
}

.topbar-left {
  flex: 1 1 auto;
  gap: 18px;
}

.topbar-actions {
  flex: 0 0 auto;
  gap: 18px;
}

.topbar-brand {
  color: var(--ink);
  font-family: var(--app-font);
  font-size: 30px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
  text-decoration: none;
  white-space: nowrap;
}

.topbar-following-quick {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex: 0 0 auto;
}

.topbar-quick-button {
  min-height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  color: var(--muted);
  padding: 0 10px;
  font: inherit;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
  cursor: pointer;
  white-space: nowrap;
}

.topbar-quick-button:hover,
.topbar-quick-button:focus-visible,
.topbar-quick-button.is-active {
  border-color: rgba(15, 20, 25, 0.22);
  background: #111;
  color: #fff;
  outline: none;
}

.topbar-search {
  width: min(240px, 28vw);
  min-height: 42px;
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: #f7f7f7;
  padding: 0 15px;
  color: var(--muted);
}

.topbar-search .app-icon {
  --icon-size: 19px;
  opacity: 0.78;
}

.topbar-search input {
  width: 100%;
  min-width: 0;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 14px;
  outline: none;
}

.topbar-search input:disabled {
  opacity: 1;
}

.topbar-write-button,
.topbar-icon-button,
.topbar-session .pill {
  min-height: 38px;
}

.topbar-write-button,
.topbar-icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: #242424;
  padding: 0 8px;
  font-size: 14px;
}

.topbar-write-button:hover,
.topbar-write-button:focus-visible,
.topbar-icon-button:hover,
.topbar-icon-button:focus-visible {
  background: var(--soft);
  outline: none;
}

.topbar-write-button .app-icon {
  --icon-size: 21px;
}

.topbar-icon-button {
  width: 38px;
  padding: 0;
}

.topbar-bell-icon {
  position: relative;
  width: 18px;
  height: 19px;
  display: inline-block;
  border: 1.8px solid currentColor;
  border-bottom: 0;
  border-radius: 11px 11px 6px 6px;
}

.topbar-bell-icon::before {
  content: "";
  position: absolute;
  left: 50%;
  top: -4px;
  width: 5px;
  height: 5px;
  border-radius: 999px;
  background: currentColor;
  transform: translateX(-50%);
}

.topbar-bell-icon::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -5px;
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: currentColor;
  transform: translateX(-50%);
}

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

.topbar-account-pill,
.topbar-account-link {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  text-decoration: none;
  white-space: nowrap;
}

.topbar-account-pill {
  max-width: 148px;
  background: transparent;
  color: #242424;
  padding: 0 8px 0 2px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.topbar-account-pill strong {
  min-width: 0;
  overflow: hidden;
  color: inherit;
  font-size: 14px;
  font-weight: 600;
  text-overflow: ellipsis;
}

.topbar-account-avatar {
  width: 30px;
  height: 30px;
  flex: 0 0 30px;
  display: block;
  overflow: hidden;
  border: 1px solid #d8e1e6;
  border-radius: 999px;
  background:
    radial-gradient(circle at 50% 36%, #8ca0ad 0 23%, transparent 24%),
    radial-gradient(circle at 50% 96%, #8ca0ad 0 34%, transparent 35%),
    #e5edf2;
}

.topbar-account-avatar.has-image,
.avatar.has-image {
  background: #e5edf2;
}

.topbar-account-avatar img,
.avatar img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.topbar-account-link {
  color: var(--muted);
  padding: 0 8px;
  font-size: 13px;
}

.topbar-account-pill:hover,
.topbar-account-pill:focus-visible,
.topbar-account-link:hover,
.topbar-account-link:focus-visible {
  background: var(--soft);
  outline: none;
}

.sidebar {
  position: fixed;
  inset: var(--topbar-height) auto 0 0;
  z-index: 40;
  width: var(--rail-width);
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  border-right: 1px solid var(--line);
  background: var(--panel);
  transition: width 160ms ease, box-shadow 160ms ease;
}

.sidebar:hover,
.relaytree-app.sidebar-pinned .sidebar {
  width: var(--rail-expanded-width);
  box-shadow: var(--shadow);
}

.sidebar-toggle {
  width: 38px;
  height: 44px;
  margin: 12px 0 16px 10px;
  display: inline-grid;
  place-items: center;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--ink);
}

.sidebar-toggle:hover,
.sidebar-toggle:focus-visible {
  background: var(--soft);
  outline: none;
}

.sidebar-toggle .app-icon {
  --icon-size: 24px;
}

.app-topbar .sidebar-toggle {
  margin: 0;
  height: 42px;
}

.sidebar-brand {
  display: grid;
  gap: 2px;
  margin: 0 0 14px;
  padding: 0 14px;
  overflow: hidden;
  white-space: nowrap;
  opacity: 0;
  transition: opacity 160ms ease;
}

.sidebar:hover .sidebar-brand,
.relaytree-app.sidebar-pinned .sidebar-brand {
  opacity: 1;
}

.sidebar-brand strong {
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.4px;
}

.sidebar-brand span {
  color: var(--muted);
  font-size: 11px;
}

.side-nav {
  display: grid;
  align-content: start;
  gap: 18px;
  padding: 0 5px;
}

.nav-item {
  min-width: 48px;
  min-height: 48px;
  display: grid;
  grid-template-columns: 48px 1fr;
  align-items: center;
  color: var(--ink);
  text-decoration: none;
  border-radius: 8px;
  overflow: hidden;
}

.nav-item:hover,
.nav-item:focus-visible {
  background: var(--soft);
  outline: none;
}

.nav-item.is-active {
  background: var(--accent-soft);
  color: var(--accent-dark);
}

.nav-item .app-icon {
  --icon-size: 24px;
  justify-self: center;
}

.nav-subitem {
  margin-top: -10px;
}

.nav-subitem .app-icon {
  --icon-size: 20px;
  opacity: 0.78;
}

.nav-subitem .nav-label {
  font-size: 14px;
}

.nav-label {
  min-width: 0;
  opacity: 0;
  transform: translateX(-6px);
  color: currentColor;
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
  transition: opacity 130ms ease, transform 130ms ease;
}

.sidebar:hover .nav-label,
.relaytree-app.sidebar-pinned .nav-label {
  opacity: 1;
  transform: translateX(0);
}

.pill {
  align-items: center;
  min-height: 30px;
  max-width: 112px;
  padding: 5px 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  color: var(--muted);
  font-size: 12px;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pill strong {
  color: var(--ink);
}

.relaytree-main {
  width: calc(100% - var(--rail-width));
  min-width: 0;
  min-height: 100vh;
  margin-left: var(--rail-width);
  display: flex;
  justify-content: flex-start;
  padding: calc(var(--topbar-height) + 14px) 24px 36px 12px;
  transition: margin-left 160ms ease, width 160ms ease;
}

.relaytree-app.sidebar-pinned .relaytree-main {
  width: calc(100% - var(--rail-expanded-width));
  margin-left: var(--rail-expanded-width);
}

.relaytree-main[data-page-layout="canvas"] {
  justify-content: flex-start;
  background: #f6f7f9;
  padding: var(--topbar-height) 0 0;
  overflow-x: auto;
}

.relaytree-app.reader-mode .relaytree-main,
.relaytree-app.reader-mode.sidebar-pinned .relaytree-main {
  width: 100%;
  margin-left: 0;
  justify-content: flex-start;
  overflow-x: hidden;
  overflow-x: clip;
  padding-right: 0;
  padding-left: 0;
  transition: none;
}

.timeline {
  position: relative;
  width: min(100%, var(--timeline-width));
  min-width: 0;
  max-width: 100%;
  min-height: 100vh;
  border-left: 1px solid var(--line);
  border-right: 1px solid var(--line);
  background: var(--panel);
}

.timeline[data-page-layout="page"] {
  width: min(100%, 1180px);
}

.timeline[data-page-layout="canvas"] {
  width: 100%;
  min-width: 100%;
  border-right: 0;
  border-left: 0;
  background: #f6f7f9;
}

.timeline[data-page-layout="reader"] {
  width: var(--reader-dynamic-width);
  max-width: var(--reader-dynamic-width);
  flex: 0 0 var(--reader-dynamic-width);
  margin-left: var(--reader-dynamic-left);
}

.profile-question-slot {
  padding: 12px 16px 0;
  border-bottom: 1px solid var(--line);
}

.profile-question-slot[hidden] {
  display: none;
}

.profile-question-card-wrap {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr) 36px;
  align-items: stretch;
  gap: 8px;
}

.profile-question-nav {
  width: 36px;
  min-height: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--muted);
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
}

.profile-question-nav:hover,
.profile-question-nav:focus-visible {
  border-color: var(--line-strong);
  background: var(--soft);
  color: var(--ink);
  outline: none;
}

.profile-question-card {
  display: grid;
  width: 100%;
  min-width: 0;
  gap: 6px;
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  color: var(--ink);
  text-align: left;
  cursor: pointer;
}

.profile-question-card:hover,
.profile-question-card:focus-visible {
  border-color: var(--line-strong);
  background: var(--soft);
  outline: none;
}

.profile-question-kicker,
.profile-question-meta {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.35;
}

.profile-question-card strong {
  font-size: 15px;
  line-height: 1.45;
  letter-spacing: 0;
}

@media (max-width: 560px) {
  .profile-question-slot {
    padding: 10px 12px 0;
  }

  .profile-question-card-wrap {
    grid-template-columns: 32px minmax(0, 1fr) 32px;
    gap: 6px;
  }

  .profile-question-nav {
    width: 32px;
    font-size: 21px;
  }

  .profile-question-card {
    padding: 12px;
  }
}

.timeline[data-page-layout="page"] .timeline-resize-handle,
.timeline[data-page-layout="canvas"] .timeline-resize-handle,
.timeline[data-page-layout="reader"] .timeline-resize-handle {
  display: none;
}

.timeline-resize-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  z-index: 35;
  width: 18px;
  border: 0;
  background: transparent;
  padding: 0;
  cursor: ew-resize;
}

.timeline-resize-handle.is-left {
  left: -9px;
}

.timeline-resize-handle.is-right {
  right: -9px;
}

.timeline-resize-handle::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 3px;
  background: transparent;
  transform: translateX(-50%);
  transition: background-color 120ms ease, box-shadow 120ms ease;
}

.timeline-resize-handle:hover::after,
.timeline-resize-handle:focus-visible::after,
.timeline-resize-handle.is-active::after {
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.timeline-resize-handle:focus-visible {
  outline: none;
}

body.is-resizing-timeline {
  cursor: ew-resize;
  user-select: none;
}

.timeline-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: none;
  min-height: 0;
  border-bottom: 0;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
}

.timeline-header-inner {
  width: min(100%, var(--timeline-width));
  min-height: 52px;
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  margin: 0 auto;
}

.timeline-tab {
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
  position: relative;
}

.timeline-tab:focus {
  outline: none;
}

.timeline-tab:focus-visible {
  box-shadow: inset 0 0 0 2px rgba(0, 122, 85, 0.28);
}

.timeline-tab.is-active {
  color: var(--ink);
}

.timeline-tab.is-active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 56px;
  height: 3px;
  border-radius: 999px 999px 0 0;
  background: var(--accent);
  transform: translateX(-50%);
}

.tab-panel {
  display: none;
}

.tab-panel.is-active {
  display: block;
}

.tab-panel.is-active .composer {
  display: block;
}

.relaytree-app.reader-mode .timeline-header,
.relaytree-app.reader-mode .tab-panel {
  display: none;
}

.tab-panel[data-tab-panel="following"] {
  display: none;
}

.selector-panel {
  min-height: 124px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
  overflow: hidden;
}

.following-strip,
.topic-strip {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  padding: 18px 16px;
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
}

.following-strip::-webkit-scrollbar,
.topic-strip::-webkit-scrollbar {
  height: 6px;
}

.following-strip::-webkit-scrollbar-thumb,
.topic-strip::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: var(--line-strong);
}

.follow-chip,
.topic-chip {
  flex: 0 0 auto;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  white-space: nowrap;
}

.follow-chip {
  width: 74px;
  min-height: 76px;
  display: grid;
  justify-items: center;
  align-content: center;
  gap: 7px;
  padding: 9px 6px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 700;
}

.topic-chip {
  min-height: 38px;
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 800;
}

.follow-chip:hover,
.follow-chip:focus-visible,
.topic-chip:hover,
.topic-chip:focus-visible {
  border-color: var(--line-strong);
  background: var(--soft);
  outline: none;
}

.follow-chip.is-active,
.topic-chip.is-active {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-dark);
}

.mini-avatar {
  width: 38px;
  height: 38px;
  display: inline-grid;
  place-items: center;
  border-radius: 999px;
  background: #e5edf2;
  color: #435767;
  font-size: 12px;
  font-weight: 900;
}

.mini-avatar.is-all {
  font-size: 11px;
}

.tone-blue {
  background: #e5f1ff;
  color: #2167b1;
}

.tone-green {
  background: #e6f6ed;
  color: #1e7b4f;
}

.tone-violet {
  background: #efe9ff;
  color: #7141c7;
}

.tone-amber {
  background: #fff3d9;
  color: #9a6200;
}

.tone-rose {
  background: #ffe8ee;
  color: #b12f52;
}

.composer {
  display: none;
  width: min(100%, 920px);
  min-width: 0;
  max-width: calc(100% - 32px);
  margin: 18px auto 20px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: var(--panel);
  box-shadow: 0 18px 46px rgba(15, 20, 25, 0.05);
  overflow: hidden;
}

.composer > .avatar {
  display: none;
}

.avatar {
  width: 40px;
  height: 40px;
  display: block;
  overflow: hidden;
  border-radius: 999px;
  background:
    radial-gradient(circle at 50% 36%, #8ca0ad 0 22%, transparent 23%),
    radial-gradient(circle at 50% 92%, #8ca0ad 0 34%, transparent 35%),
    #e5edf2;
}