@font-face {
  font-family: "Pretendard";
  src: url("https://cdn.jsdelivr.net/gh/projectnoonnu/pretendard@1.0/Pretendard-Thin.woff2") format("woff2");
  font-weight: 100;
  font-display: swap;
}

@font-face {
  font-family: "Pretendard";
  src: url("https://cdn.jsdelivr.net/gh/projectnoonnu/pretendard@1.0/Pretendard-ExtraLight.woff2") format("woff2");
  font-weight: 200;
  font-display: swap;
}

@font-face {
  font-family: "Pretendard";
  src: url("https://cdn.jsdelivr.net/gh/projectnoonnu/pretendard@1.0/Pretendard-Light.woff2") format("woff2");
  font-weight: 300;
  font-display: swap;
}

@font-face {
  font-family: "Pretendard";
  src: url("https://cdn.jsdelivr.net/gh/projectnoonnu/pretendard@1.0/Pretendard-Regular.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "Pretendard";
  src: url("https://cdn.jsdelivr.net/gh/projectnoonnu/pretendard@1.0/Pretendard-Medium.woff2") format("woff2");
  font-weight: 500;
  font-display: swap;
}

@font-face {
  font-family: "Pretendard";
  src: url("https://cdn.jsdelivr.net/gh/projectnoonnu/pretendard@1.0/Pretendard-SemiBold.woff2") format("woff2");
  font-weight: 600;
  font-display: swap;
}

@font-face {
  font-family: "Pretendard";
  src: url("https://cdn.jsdelivr.net/gh/projectnoonnu/pretendard@1.0/Pretendard-Bold.woff2") format("woff2");
  font-weight: 700;
  font-display: swap;
}

@font-face {
  font-family: "Pretendard";
  src: url("https://cdn.jsdelivr.net/gh/projectnoonnu/pretendard@1.0/Pretendard-ExtraBold.woff2") format("woff2");
  font-weight: 800;
  font-display: swap;
}

@font-face {
  font-family: "Pretendard";
  src: url("https://cdn.jsdelivr.net/gh/projectnoonnu/pretendard@1.0/Pretendard-Black.woff2") format("woff2");
  font-weight: 900;
  font-display: swap;
}

:root {
  color-scheme: light;
  --bg: #f2f5fb;
  --card: #ffffff;
  --border: #e5e9f2;
  --text: #1c2333;
  --muted: #737a8c;
  --accent: #2f6feb;
  --accent-hover: #2558c4;
  --accent-soft: #eaf1ff;
  --shadow: 0 1px 2px rgba(20, 30, 60, 0.04), 0 8px 24px rgba(20, 30, 60, 0.05);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Pretendard", -apple-system, "Segoe UI", "Malgun Gothic", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.site-header {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 10;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 17px;
  color: var(--text);
  text-decoration: none;
}

.logo-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 9px;
  background: var(--accent);
  color: #fff;
  font-size: 15px;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 28px 20px 60px;
}

.btn {
  display: inline-block;
  border: none;
  padding: 10px 18px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.hero {
  background: linear-gradient(135deg, #4f7fee 0%, #7aa6ff 55%, #ffd9ea 100%);
  border-radius: 18px;
  padding: 28px 28px;
  color: #fff;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}

.hero h2 {
  margin: 0 0 6px;
  font-size: 22px;
  font-weight: 800;
}

.hero p {
  margin: 0;
  font-size: 14px;
  opacity: 0.92;
}

.list-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 4px 2px 12px;
}

.list-header h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
}

.post-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.post-list li {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px 18px;
  box-shadow: var(--shadow);
}

.post-list a {
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  font-size: 15px;
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
  margin-top: 10px;
}

.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 11px;
  font-weight: 700;
  flex: none;
}

.empty {
  color: var(--muted);
  text-align: center;
  padding: 40px 0;
}

h2 {
  font-size: 20px;
}

form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  box-shadow: var(--shadow);
}

label {
  font-size: 13px;
  color: var(--muted);
  font-weight: 600;
}

input,
textarea {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 14px;
  font-family: inherit;
  width: 100%;
  background: #fbfcfe;
}

input:focus,
textarea:focus {
  outline: 2px solid var(--accent-soft);
  border-color: var(--accent);
}

textarea {
  min-height: 160px;
  resize: vertical;
}

.error {
  color: #dc2626;
  font-size: 14px;
  margin-top: 4px;
}

.post-detail {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px;
  margin-top: 20px;
  box-shadow: var(--shadow);
}

.post-detail h2 {
  margin-top: 0;
}

.post-content {
  white-space: pre-wrap;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

.back-link {
  display: inline-block;
  margin-top: 20px;
  color: var(--accent);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
}