:root {
  --ink: #102033;
  --muted: #63788d;
  --paper: #f4f8fc;
  --paper-2: #e7f0f8;
  --surface: #ffffff;
  --line: #cbdcea;
  --green: #2d6ea6;
  --green-2: #4a91c8;
  --gold: #f0b84d;
  --blue: #2d6ea6;
  --contrast: #ffffff;
  --primary-hover: #184d77;
  --topbar-bg: rgba(244, 248, 252, 0.92);
  --topbar-line: rgba(203, 220, 234, 0.86);
  --workspace-bg: #eef5fb;
  --surface-soft: #f8fbfe;
  --surface-tint: #e7f0f8;
  --surface-chip: #d6e6f3;
  --surface-badge: #e4f0fa;
  --line-soft: #d8e5f0;
  --line-strong: #c3d8e9;
  --text-soft: #20364d;
  --text-body: #37516b;
  --success-bg: #dff3ea;
  --success-ink: #176346;
  --danger-bg: #fde7e2;
  --danger-bg-hover: #f8d5ce;
  --danger-line: #e0a39c;
  --danger-ink: #9f382f;
  --like-ink: #c23b5a;
  --like-bg: #fce6ec;
  --focus-ring: rgba(45, 110, 166, 0.16);
  --panel-shadow: 0 12px 28px rgba(16, 32, 51, 0.07);
  --toast-bg: #102033;
  --shadow: 0 22px 60px rgba(16, 32, 51, 0.14);
  --radius: 8px;
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body[data-theme="dark"] {
  --ink: #eaf3fb;
  --muted: #9fb4c8;
  --paper: #071420;
  --paper-2: #0d2032;
  --surface: #12263a;
  --line: #294962;
  --green: #2d6ea6;
  --green-2: #69afe1;
  --gold: #f4c866;
  --blue: #69afe1;
  --contrast: #f7fbff;
  --primary-hover: #69afe1;
  --topbar-bg: rgba(7, 20, 32, 0.92);
  --topbar-line: rgba(57, 88, 112, 0.78);
  --workspace-bg: #071420;
  --surface-soft: #172d43;
  --surface-tint: #173653;
  --surface-chip: #1c4263;
  --surface-badge: #173653;
  --line-soft: #2d506a;
  --line-strong: #3b6685;
  --text-soft: #d8e7f3;
  --text-body: #c3d4e3;
  --success-bg: #123a31;
  --success-ink: #77d6af;
  --danger-bg: #4b2324;
  --danger-bg-hover: #5a2a2b;
  --danger-line: #874547;
  --danger-ink: #ffaba4;
  --like-ink: #ff8fa8;
  --like-bg: #3a1c26;
  --focus-ring: rgba(105, 175, 225, 0.22);
  --panel-shadow: 0 16px 36px rgba(0, 0, 0, 0.28);
  --toast-bg: #eaf3fb;
  --shadow: 0 22px 60px rgba(0, 0, 0, 0.38);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--workspace-bg);
  color: var(--ink);
  font-family: inherit;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--blue); }
button, input, textarea, select { font: inherit; color: inherit; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.55rem 1rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 0.92rem;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.15s ease, border-color 0.15s ease;
}
.button:active { transform: translateY(1px); }
.button-primary { background: var(--green); color: var(--contrast); }
.button-primary:hover { background: var(--primary-hover); }
.button-primary:disabled { opacity: 0.55; cursor: not-allowed; }
.button-ghost { background: transparent; border-color: var(--line-strong); color: var(--text-body); }
.button-ghost:hover { background: var(--surface-tint); }
.button-quiet { background: var(--surface-tint); color: var(--text-soft); }
.button-quiet:hover { background: var(--surface-chip); }
.button-small { padding: 0.35rem 0.7rem; font-size: 0.82rem; }
.button-danger { background: var(--danger-bg); color: var(--danger-ink); border-color: var(--danger-line); }
.button-danger:hover { background: var(--danger-bg-hover); }

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.7rem 1.4rem;
  background: var(--topbar-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--topbar-line);
}
.brand { display: flex; align-items: center; gap: 0.6rem; text-decoration: none; color: var(--ink); }
.brand-mark {
  width: 38px; height: 38px; border-radius: 10px;
  background: linear-gradient(135deg, var(--green), var(--green-2));
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 0.85rem; letter-spacing: 0.02em;
}
.brand strong { display: block; font-size: 0.95rem; }
.brand small { display: block; color: var(--muted); font-size: 0.78rem; }
.topbar-actions { display: flex; align-items: center; gap: 0.6rem; }
.theme-control select {
  padding: 0.35rem 0.5rem; border-radius: 8px; border: 1px solid var(--line);
  background: var(--surface); color: var(--ink);
}
.topbar-user { display: flex; align-items: center; gap: 0.55rem; }
.topbar-user strong { font-size: 0.86rem; }
.topbar-user small { display: block; color: var(--muted); font-size: 0.74rem; }

.avatar {
  width: 40px; height: 40px; border-radius: 999px;
  background: var(--surface-chip); color: var(--text-soft);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 0.85rem; flex-shrink: 0;
  background-size: cover; background-position: center;
  border: 1px solid var(--line-soft);
}
.avatar-sm { width: 30px; height: 30px; font-size: 0.72rem; }

main { max-width: 1040px; margin: 0 auto; padding: 1.6rem 1.2rem 4rem; }

.gate {
  max-width: 460px; margin: 4rem auto; text-align: center;
  background: var(--surface); border: 1px solid var(--line-soft);
  border-radius: 16px; padding: 2.2rem 1.8rem; box-shadow: var(--panel-shadow);
}
.gate h1 { margin-top: 0; font-size: 1.3rem; }
.gate p { color: var(--text-body); }

.community-shell {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 1.4rem;
  align-items: start;
}
@media (max-width: 860px) {
  .community-shell { grid-template-columns: 1fr; }
}

.card {
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: 16px;
  box-shadow: var(--panel-shadow);
}

.composer-card { position: sticky; top: 84px; padding: 1.1rem; display: flex; flex-direction: column; gap: 0.8rem; }
.composer-who { display: flex; align-items: center; gap: 0.6rem; }
.composer-who strong { display: block; font-size: 0.92rem; }
.composer-who small { display: block; color: var(--muted); font-size: 0.76rem; }

.type-tabs { display: flex; gap: 0.4rem; background: var(--surface-tint); border-radius: 999px; padding: 0.25rem; }
.type-tabs button {
  flex: 1; border: none; background: transparent; padding: 0.4rem 0.5rem;
  border-radius: 999px; font-weight: 600; font-size: 0.82rem; color: var(--text-body); cursor: pointer;
}
.type-tabs button.is-active { background: var(--surface); color: var(--ink); box-shadow: 0 1px 3px rgba(16,32,51,0.14); }

.composer-panel { display: none; flex-direction: column; gap: 0.6rem; }
.composer-panel.is-active { display: flex; }

label.field { display: flex; flex-direction: column; gap: 0.3rem; font-size: 0.82rem; color: var(--text-soft); font-weight: 600; }
input[type="text"], input[type="url"], textarea, select {
  width: 100%; padding: 0.55rem 0.7rem; border-radius: 10px;
  border: 1px solid var(--line); background: var(--surface); color: var(--ink);
}
input:focus, textarea:focus, select:focus { outline: 3px solid var(--focus-ring); border-color: var(--green); }
textarea { resize: vertical; min-height: 78px; }
input[type="file"] { font-size: 0.82rem; }

.review-toggle { display: flex; align-items: center; gap: 0.5rem; font-size: 0.85rem; color: var(--text-soft); }
.review-fields { display: none; flex-direction: column; gap: 0.6rem; padding: 0.7rem; background: var(--surface-tint); border-radius: 12px; }
.review-fields.is-active { display: flex; }

.star-picker { display: flex; gap: 0.2rem; }
.star-picker button {
  border: none; background: none; cursor: pointer; font-size: 1.3rem; line-height: 1;
  color: var(--line-strong); padding: 0.1rem;
}
.star-picker button.is-filled { color: var(--gold); }

.composer-submit { display: flex; justify-content: flex-end; }
.composer-error { color: var(--danger-ink); font-size: 0.82rem; min-height: 1.1em; }

.feed { display: flex; flex-direction: column; gap: 1rem; }
.feed-empty { text-align: center; color: var(--muted); padding: 3rem 1rem; }
.feed-load-more { display: flex; justify-content: center; padding: 0.6rem 0; }

.post-card { padding: 1rem 1.1rem 0.9rem; display: flex; flex-direction: column; gap: 0.7rem; }
.post-head { display: flex; align-items: flex-start; gap: 0.6rem; }
.post-head-meta { flex: 1; min-width: 0; }
.post-head-meta strong { font-size: 0.9rem; }
.post-head-line { display: flex; align-items: center; gap: 0.4rem; flex-wrap: wrap; }
.role-chip {
  font-size: 0.68rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.03em;
  color: var(--green); background: var(--surface-badge); padding: 0.12rem 0.5rem; border-radius: 999px;
}
.post-time { color: var(--muted); font-size: 0.76rem; }
.post-delete { color: var(--muted); background: none; border: none; cursor: pointer; padding: 0.2rem; border-radius: 8px; }
.post-delete:hover { background: var(--danger-bg); color: var(--danger-ink); }

.review-badge {
  display: inline-flex; align-items: center; gap: 0.4rem; align-self: flex-start;
  background: var(--surface-tint); border: 1px solid var(--line-soft); border-radius: 10px;
  padding: 0.5rem 0.7rem;
}
.review-badge strong { font-size: 0.86rem; }
.review-stars { color: var(--gold); font-size: 0.9rem; letter-spacing: 0.05em; }

.post-body { white-space: pre-wrap; word-wrap: break-word; font-size: 0.94rem; color: var(--text-body); line-height: 1.5; }
.post-photo { border-radius: 12px; overflow: hidden; border: 1px solid var(--line-soft); max-height: 520px; }
.post-photo img { width: 100%; height: 100%; object-fit: cover; }

.link-card { border: 1px solid var(--line-soft); border-radius: 12px; overflow: hidden; background: var(--surface-tint); }
.link-card-embed iframe { width: 100%; border: none; display: block; }
.link-card-plain { display: flex; align-items: center; gap: 0.6rem; padding: 0.7rem 0.8rem; text-decoration: none; color: var(--ink); }
.link-card-icon {
  width: 34px; height: 34px; border-radius: 9px; background: var(--surface-chip);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.link-card-text strong { display: block; font-size: 0.86rem; }
.link-card-text small { color: var(--muted); font-size: 0.76rem; word-break: break-all; }

.post-actions { display: flex; align-items: center; gap: 0.4rem; border-top: 1px solid var(--line-soft); padding-top: 0.6rem; }
.action-button {
  display: inline-flex; align-items: center; gap: 0.35rem; border: none; background: none; cursor: pointer;
  padding: 0.35rem 0.6rem; border-radius: 999px; color: var(--text-body); font-size: 0.84rem; font-weight: 600;
}
.action-button:hover { background: var(--surface-tint); }
.action-button.is-liked { color: var(--like-ink); background: var(--like-bg); }
.action-button svg { width: 17px; height: 17px; }

.comments { display: none; flex-direction: column; gap: 0.6rem; border-top: 1px solid var(--line-soft); padding-top: 0.7rem; }
.comments.is-open { display: flex; }
.comment-list { display: flex; flex-direction: column; gap: 0.55rem; }
.comment-item { display: flex; gap: 0.5rem; }
.comment-bubble { background: var(--surface-tint); border-radius: 12px; padding: 0.45rem 0.7rem; flex: 1; }
.comment-bubble strong { font-size: 0.8rem; }
.comment-bubble p { margin: 0.1rem 0 0; font-size: 0.86rem; white-space: pre-wrap; word-wrap: break-word; }
.comment-meta { display: flex; align-items: center; gap: 0.5rem; margin-top: 0.15rem; }
.comment-meta small { color: var(--muted); font-size: 0.72rem; }
.comment-meta button { color: var(--muted); background: none; border: none; cursor: pointer; font-size: 0.72rem; padding: 0; }
.comment-meta button:hover { color: var(--danger-ink); }
.comment-form { display: flex; gap: 0.5rem; align-items: flex-start; }
.comment-form input { flex: 1; }

.toast {
  position: fixed; bottom: 1.4rem; left: 50%; transform: translate(-50%, 8px);
  background: var(--toast-bg); color: var(--paper); padding: 0.6rem 1rem; border-radius: 10px;
  font-size: 0.85rem; opacity: 0; pointer-events: none; transition: opacity 0.2s ease, transform 0.2s ease;
  box-shadow: var(--shadow); z-index: 50; max-width: 90vw; text-align: center;
}
.toast.is-visible { opacity: 1; transform: translate(-50%, 0); }

.spinner-row { display: flex; justify-content: center; padding: 1.4rem 0; color: var(--muted); font-size: 0.85rem; }
[hidden] { display: none !important; }