/* ========================================
   Reset & Base
   ======================================== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Helvetica, Arial, sans-serif;
  color: #111;
  background: #fff;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  max-width: 820px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ========================================
   Header
   ======================================== */
.site-header {
  border-bottom: 1px solid #e0e0e0;
  background: #fff;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.logo {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.main-nav {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.nav-link {
  text-decoration: none;
  color: #555;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-link:hover,
.nav-link.active {
  color: #000;
}

.nav-admin {
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 0.25rem 0.7rem;
  font-size: 0.82rem;
}

.nav-admin:hover {
  border-color: #111;
}

/* ========================================
   Hero
   ======================================== */
.hero {
  padding: 4rem 0 3rem;
  text-align: center;
  border-bottom: 1px solid #e0e0e0;
}

.hero h2 {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.hero p {
  font-size: 1.05rem;
  color: #555;
  max-width: 520px;
  margin: 0 auto;
}

/* ========================================
   Page content
   ======================================== */
.page-content {
  padding: 2.5rem 0 4rem;
}

.page-content h2 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.page-content h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

.page-content p {
  font-size: 0.95rem;
  color: #333;
  line-height: 1.7;
  margin-bottom: 0.75rem;
}

/* ========================================
   Posts listing
   ======================================== */
.posts-section {
  padding: 2.5rem 0 4rem;
}

.post-card {
  border-bottom: 1px solid #e0e0e0;
  padding-bottom: 2rem;
  margin-bottom: 2rem;
  cursor: pointer;
  transition: opacity 0.2s;
}

.post-card:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.post-card:hover {
  opacity: 0.7;
}

.post-card .post-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
}

.post-card .post-meta {
  font-size: 0.82rem;
  color: #888;
  margin-bottom: 0.5rem;
}

.post-card .post-excerpt {
  font-size: 0.92rem;
  color: #444;
  line-height: 1.6;
}

.post-card .post-footer {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 0.75rem;
  font-size: 0.82rem;
  color: #888;
}

.post-card .post-footer > span {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.read-more {
  font-weight: 600;
  color: #111;
}

/* ========================================
   Post detail
   ======================================== */
.post-detail {
  padding: 2.5rem 0 4rem;
}

.back-link {
  display: inline-block;
  margin-bottom: 1.5rem;
  font-size: 0.88rem;
  color: #555;
  font-weight: 500;
}

.back-link:hover {
  color: #111;
}

.post-detail .post-title {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.post-detail .post-meta {
  font-size: 0.85rem;
  color: #888;
  margin-bottom: 1.5rem;
}

.post-detail .post-body {
  font-size: 0.98rem;
  color: #222;
  line-height: 1.8;
  white-space: pre-wrap;
}

/* ========================================
   Like Button
   ======================================== */
.post-actions {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid #eee;
}

.like-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: none;
  border: 1.5px solid #ccc;
  border-radius: 20px;
  padding: 0.35rem 0.85rem;
  cursor: pointer;
  font-size: 0.85rem;
  color: #555;
  transition: all 0.2s;
}

.like-btn:hover {
  border-color: #111;
  color: #111;
}

.like-btn.liked {
  border-color: #111;
  color: #111;
}

.like-btn.liked .heart-icon {
  fill: #111;
}

.heart-icon {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  transition: fill 0.2s;
  display: inline-block;
  vertical-align: middle;
  flex-shrink: 0;
}

.like-count {
  font-weight: 600;
  line-height: 1;
}

/* ========================================
   Comments
   ======================================== */
.comments-section {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid #e0e0e0;
}

.comments-section h4 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.comments-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.comment {
  background: #fafafa;
  border: 1px solid #eee;
  border-radius: 6px;
  padding: 0.75rem 1rem;
}

.comment-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.3rem;
}

.comment-author {
  font-weight: 600;
  font-size: 0.88rem;
}

.comment-time {
  font-size: 0.75rem;
  color: #999;
}

.comment-body {
  font-size: 0.9rem;
  color: #333;
  line-height: 1.5;
}

.comment-delete {
  background: none;
  border: none;
  font-size: 0.75rem;
  color: #999;
  cursor: pointer;
  margin-top: 0.4rem;
  padding: 0;
}

.comment-delete:hover {
  color: #111;
  text-decoration: underline;
}

.no-comments {
  font-size: 0.88rem;
  color: #999;
  margin-bottom: 1rem;
}

/* ========================================
   Comment Form
   ======================================== */
.comment-form {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.comment-form input,
.comment-form textarea {
  font-family: inherit;
  font-size: 0.88rem;
  padding: 0.55rem 0.75rem;
  border: 1px solid #ddd;
  border-radius: 4px;
  outline: none;
  transition: border-color 0.2s;
  background: #fff;
  color: #111;
}

.comment-form input:focus,
.comment-form textarea:focus {
  border-color: #111;
}

.comment-form textarea {
  min-height: 70px;
  resize: vertical;
}

.btn-submit {
  align-self: flex-start;
  background: #111;
  color: #fff;
  border: none;
  border-radius: 4px;
  padding: 0.5rem 1.25rem;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

.btn-submit:hover {
  background: #333;
}

.form-error {
  font-size: 0.8rem;
  color: #c00;
  min-height: 1.2em;
}

/* ========================================
   Admin
   ======================================== */
.admin-section {
  padding: 2.5rem 0 4rem;
}

.admin-section h2 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.admin-login {
  max-width: 360px;
}

.admin-login h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.admin-form {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.admin-form input,
.admin-form textarea,
.admin-form select {
  font-family: inherit;
  font-size: 0.88rem;
  padding: 0.55rem 0.75rem;
  border: 1px solid #ddd;
  border-radius: 4px;
  outline: none;
  transition: border-color 0.2s;
  background: #fff;
  color: #111;
}

.admin-form input:focus,
.admin-form textarea:focus {
  border-color: #111;
}

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

.admin-form label {
  font-size: 0.85rem;
  font-weight: 600;
  margin-top: 0.5rem;
}

.admin-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  gap: 1rem;
}

.admin-bar .btn-submit {
  flex-shrink: 0;
}

.btn-danger {
  background: none;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 0.35rem 0.85rem;
  font-size: 0.8rem;
  color: #555;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-danger:hover {
  border-color: #c00;
  color: #c00;
}

.btn-secondary {
  background: #fff;
  border: 1px solid #111;
  color: #111;
  border-radius: 4px;
  padding: 0.5rem 1.25rem;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-secondary:hover {
  background: #111;
  color: #fff;
}

.admin-post-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.admin-post-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  border: 1px solid #eee;
  border-radius: 6px;
  background: #fafafa;
}

.admin-post-item .post-info {
  flex: 1;
  min-width: 0;
}

.admin-post-item .post-info strong {
  display: block;
  font-size: 0.92rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.admin-post-item .post-info span {
  font-size: 0.78rem;
  color: #999;
}

.admin-post-item .post-actions-admin {
  display: flex;
  gap: 0.5rem;
  flex-shrink: 0;
}

.admin-msg {
  font-size: 0.85rem;
  color: #555;
  padding: 1rem 0;
}

/* ========================================
   Delete Prompt Modal
   ======================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
}

.modal {
  background: #fff;
  border-radius: 8px;
  padding: 1.5rem;
  width: 320px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.15);
}

.modal h4 {
  margin-bottom: 0.75rem;
  font-size: 1rem;
}

.modal input {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 0.88rem;
  margin-bottom: 0.5rem;
  outline: none;
  font-family: inherit;
}

.modal input:focus {
  border-color: #111;
}

.modal-actions {
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
}

.modal-actions button {
  padding: 0.4rem 1rem;
  border-radius: 4px;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
}

.modal-cancel {
  background: #eee;
  border: none;
  color: #333;
}

.modal-confirm {
  background: #111;
  border: none;
  color: #fff;
}

.modal-error {
  font-size: 0.78rem;
  color: #c00;
  min-height: 1em;
  margin-bottom: 0.25rem;
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
  border-top: 1px solid #e0e0e0;
  padding: 1.5rem 0;
  text-align: center;
  font-size: 0.82rem;
  color: #999;
}