:root {
    --topbar-h: 44px;
}

body {
  margin: 0;
  padding: var(--topbar-h) 24px 24px;
  overflow-x: hidden;
  font-family: monospace, sans-serif;
  line-height: 1.5;
  background: lightpink;
}

.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--topbar-h);
  display: grid;
  grid-template-columns: auto 1fr; /* hamburger | ticker */
  align-items: center;
  gap: 8px;
  padding: 0 8px;
  background: lightpink;
  border-bottom: 1px solid #000;
  z-index: 999;
}
.topbar__left { display: flex; align-items: center; }

.icon-btn {
  appearance: none;
  background: #fff;
  border: 1px solid #000;
  border-radius: 8px;
  padding: 6px 10px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}
.icon-btn svg { display: block; fill: currentColor; }

.topbar__ticker {
  position: relative;
  overflow: hidden;
  height: 100%;
}
.ticker-track {
  display: inline-block;
  white-space: nowrap;
  padding-left: 100%;
  will-change: transform;
  animation: ticker-move 30s linear infinite;
  font-size: 0.85rem;
  line-height: var(--topbar-h);
}
@keyframes ticker-move {
  0% { transform: translateX(0); }
  100% { transform: translateX(-100%); }
}

.side-menu {
  position: fixed;
  top: var(--topbar-h);
  bottom: 0;
  left: 0;
  width: 280px;
  background: #fff;
  border-right: 1px solid #000;
  transform: translateX(-100%);
  transition: transform 200ms ease-out;
  z-index: 1001;
  display: flex;
  flex-direction: column;
}
.side-menu.is-open { transform: translateX(0); }
.side-menu__header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px; border-bottom: 1px solid #000;
}
.side-menu__nav {
  display: flex; flex-direction: column; padding: 8px;
}
.side-menu__nav a {
  margin: 6px 0;
  text-decoration: none;
  color: #000;
  border: 1px solid #000;
  border-radius: 8px;
  background: #f8f8f8;
  padding: 8px 10px;
  text-align: left;
}

.side-menu-backdrop {
  position: fixed; inset: 0; background: rgba(0,0,0,0.25);
  opacity: 0; pointer-events: none; transition: opacity 150ms ease-out; z-index: 1000;
}
.side-menu-backdrop.is-open { opacity: 1; pointer-events: auto; }
.no-scroll { overflow: hidden; }

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 0;
}

.iframe-container {
  position: relative;
  border: 1px solid #000;
  border-top: 0;
  display: flex;
  width: 30vw;
  flex-direction: column;
  background: #fff;
}

.iframe-header {
  position: absolute;
  top: 0; left: 0; right: 0;
  background: lightpink;
  padding: 4px 8px;
  font-size: 0.875rem;
  text-align: right;
  z-index: 2;
  border-bottom: 1px solid #000;
}

.iframe-header a { color: #000; text-decoration: none; }
.iframe-header a:hover { text-decoration: underline; }

.iframe-container iframe {
  width: 100%;
  height: 600px;
  border: none;
  margin-top: 1.5em;
}

/* mobile */
@media (max-width: 768px) {
  :root { --topbar-h: 40px; }
  body { padding: var(--topbar-h) 12px 16px; }
  .ticker-track { font-size: 0.75rem; }

  .grid {
    display: grid;
    grid-template-columns: 1fr;
    grid-template-areas:
      "forum"
      "wiki"
      "people";
    gap: 0;
  }
  .pane--forum  { grid-area: forum; }
  .pane--wiki   { grid-area: wiki; }
  .pane--people { grid-area: people; }

  .iframe-container {
    width: 100%;
    margin-top: 16px;
  }
}

/* line css */
/* A11y helper */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}

.line-modal{
  position:fixed; inset:0;
  background: rgba(0,0,0,.35);
  display:none; align-items:center; justify-content:center;
  z-index: 1100;
}
.line-modal[aria-hidden="false"]{ display:flex; }
.line-modal__card{
  background:#fff; border:1px solid #000; border-radius:12px;
  width:min(640px, 92vw);
  box-shadow: 0 8px 30px rgba(0,0,0,.2);
}
.line-modal__header{
  display:flex; justify-content:space-between; align-items:center;
  padding:10px 12px; border-bottom:1px solid #000; background: lightpink;
}
#lineInput{
  width: 100%; box-sizing: border-box;
  margin:12px; padding:10px;
  border:1px solid #000; border-radius:8px; font: inherit;
}
.line-modal__row{
  display:flex; justify-content:space-between; align-items:center;
  padding: 0 12px 12px;
}