:root {
  --bg: #f4f4f5;
  --surface: #ffffff;
  --text: #1a1a1a;
  --muted: #6b7280;
  --border: #e5e7eb;
  --accent: #f9e000;
  --accent-dark: #c9b400;
  --accent-soft: rgba(249, 224, 0, 0.18);
  --shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  --radius: 12px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Noto Sans KR", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.app {
  max-width: 640px;
  margin: 0 auto;
  min-height: 100vh;
  padding-bottom: 5rem;
}

/* ── 탭 ── */
.top-bar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.tabs {
  display: flex;
}

.tab {
  flex: 1;
  padding: 0.95rem 0.5rem;
  border: none;
  background: transparent;
  font: inherit;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--muted);
  cursor: pointer;
  position: relative;
  transition: color 0.15s;
}

.tab:hover {
  color: var(--text);
}

.tab.active {
  color: var(--text);
  font-weight: 700;
}

.tab.active::after {
  content: "";
  position: absolute;
  left: 20%;
  right: 20%;
  bottom: 0;
  height: 3px;
  background: var(--accent);
  border-radius: 3px 3px 0 0;
}

/* ── 패널 ── */
.panel {
  display: none;
  padding: 0 1rem;
}

.panel.active {
  display: block;
}

.panel-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 0;
  gap: 0.75rem;
}

.sort-wrap {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-left: auto;
  font-size: 0.85rem;
  color: var(--muted);
}

.sort-wrap select {
  border: none;
  background: transparent;
  font: inherit;
  font-size: 0.85rem;
  color: var(--text);
  cursor: pointer;
  padding: 0.25rem 0.15rem;
}

.sort-wrap select:focus {
  outline: 2px solid var(--accent);
  border-radius: 4px;
}

/* ── 상태 ── */
.status {
  padding: 0.65rem 0.85rem;
  border-radius: 8px;
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
}

.status.info {
  background: var(--accent-soft);
  border: 1px solid rgba(249, 224, 0, 0.45);
  color: var(--text);
}

.status.error {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #991b1b;
}

/* ── 게시글 목록 ── */
.post-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.post-item {
  display: flex;
  gap: 0.85rem;
  align-items: center;
  padding: 0.85rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.post-item:hover {
  border-color: var(--accent-dark);
  box-shadow: var(--shadow);
}

.post-thumb {
  flex-shrink: 0;
  width: 72px;
  height: 72px;
  border-radius: 8px;
  background: #e5e7eb;
  display: grid;
  place-items: center;
  font-size: 0.75rem;
  color: var(--muted);
  overflow: hidden;
}

.post-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.post-thumb .thumb-letter {
  font-size: 1.5rem;
  font-weight: 700;
  color: #9ca3af;
}

.post-body {
  flex: 1;
  min-width: 0;
}

.post-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.35;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.post-meta {
  margin: 0.3rem 0 0;
  font-size: 0.78rem;
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.post-badge {
  display: inline-block;
  margin-top: 0.35rem;
  padding: 0.15rem 0.45rem;
  font-size: 0.7rem;
  font-weight: 600;
  background: var(--accent-soft);
  border-radius: 4px;
  color: var(--text);
}

/* ── 빈 상태 ── */
.empty-state {
  text-align: center;
  padding: 4rem 1.5rem;
  color: var(--muted);
  font-size: 0.95rem;
}

/* ── 글쓰기 FAB ── */
.fab {
  position: fixed;
  right: max(1.25rem, calc(50% - 320px + 1.25rem));
  bottom: 1.5rem;
  z-index: 20;
  background: var(--accent);
  color: var(--text);
  border: none;
  border-radius: 999px;
  padding: 0.85rem 1.35rem;
  font: inherit;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(249, 224, 0, 0.45);
  transition: transform 0.15s, box-shadow 0.15s;
}

.fab:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(249, 224, 0, 0.55);
}

/* ── 푸터 ── */
.footer {
  text-align: center;
  padding: 2rem 1rem 1rem;
  color: var(--muted);
  font-size: 0.72rem;
}

@media (max-width: 480px) {
  .tab {
    font-size: 0.85rem;
    padding: 0.85rem 0.25rem;
  }

  .post-thumb {
    width: 64px;
    height: 64px;
  }
}