/* ===========================
   mywebsite - PaperMod-inspired
   Bilingual (zh / en) minimalist blog
   =========================== */

:root {
  /* Light theme (default) */
  --theme: #ffffff;
  --entry: #ffffff;
  --primary: #2c3e50;
  --secondary: #4f6878;
  --tertiary: #6c757d;
  --content: #2c3e50;
  --code-block-bg: #f5f7f9;
  --code-bg: #eef1f4;
  --border: #e3e7eb;

  /* Accents */
  --link: #0066cc;
  --link-hover: #003d7a;
  --accent: #0066cc;

  /* Layout */
  --width: 720px;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,.06);

  /* Font */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
  --font-serif: "Georgia", "Source Serif Pro", "Noto Serif SC", serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

[data-theme="dark"] {
  --theme: #1d1e20;
  --entry: #252627;
  --primary: #f0f0f0;
  --secondary: #cccccc;
  --tertiary: #9a9a9a;
  --content: #e0e0e0;
  --code-block-bg: #2a2b2c;
  --code-bg: #2a2b2c;
  --border: #3a3b3c;
  --link: #6cb6ff;
  --link-hover: #a8d1ff;
  --accent: #6cb6ff;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--theme);
  color: var(--primary);
  line-height: 1.6;
  font-size: 16px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color .25s, color .25s;
}

a { color: var(--link); text-decoration: none; }
a:hover { color: var(--link-hover); text-decoration: underline; }

img { max-width: 100%; height: auto; border-radius: var(--radius); }

/* -------- Navbar -------- */
.navbar {
  width: 100%;
  background: var(--theme);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
}

.navbar .container {
  max-width: var(--width);
  margin: 0 auto;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.navbar .brand {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: -.5px;
}

.navbar .brand:hover { text-decoration: none; color: var(--accent); }

.navbar nav { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }

.navbar nav a {
  color: var(--secondary);
  font-size: .95rem;
  font-weight: 500;
  padding: 4px 0;
  transition: color .2s;
}
.navbar nav a.active,
.navbar nav a:hover { color: var(--primary); text-decoration: none; }

.toolbar {
  display: flex; align-items: center; gap: 12px;
}

.icon-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 10px;
  cursor: pointer;
  color: var(--secondary);
  font-size: .85rem;
  font-family: inherit;
  transition: all .2s;
}
.icon-btn:hover { color: var(--primary); border-color: var(--primary); }

/* -------- Main -------- */
main {
  flex: 1;
  max-width: var(--width);
  width: 100%;
  margin: 0 auto;
  padding: 30px 20px 60px;
}

.page-header h1 {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  margin-bottom: 16px;
  font-weight: 700;
}

/* -------- Home / First page -------- */
.intro p {
  margin-bottom: 14px;
  color: var(--secondary);
  font-size: 1rem;
}
.intro a { color: var(--link); }

.section-title {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  margin: 36px 0 14px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
  font-weight: 700;
}

/* -------- Post Card -------- */
.post-entry {
  background: var(--entry);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 14px;
  transition: transform .2s, box-shadow .2s, border-color .2s;
}
.post-entry:hover {
  border-color: var(--link);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}
.post-entry.hidden-pill {
  opacity: .55;
}
.post-entry .post-thumb {
  width: 100%;
  max-height: 220px;
  object-fit: cover;
  border-radius: var(--radius) var(--radius) 0 0;
  margin: -18px -20px 14px;
  width: calc(100% + 40px);
}
.post-entry h3 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  margin-bottom: 6px;
  font-weight: 700;
}
.post-entry h3 a { color: var(--primary); }
.post-entry h3 a:hover { color: var(--link); text-decoration: none; }

.post-meta {
  font-size: .82rem;
  color: var(--tertiary);
  margin-bottom: 8px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}
.post-meta .category { color: var(--link); }

.post-summary {
  color: var(--secondary);
  margin-bottom: 8px;
  font-size: .95rem;
}
.read-more {
  font-size: .9rem;
  color: var(--link);
  font-weight: 500;
}
.read-more:hover { text-decoration: underline; }

.view-all {
  margin-top: 24px;
  font-size: .95rem;
}

/* -------- Single Article -------- */
.post-single {
  background: var(--entry);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
}
.post-single h1 {
  font-family: var(--font-serif);
  font-size: 1.9rem;
  margin-bottom: 8px;
  line-height: 1.25;
}
.post-single .post-meta { margin-bottom: 20px; padding-bottom: 12px; border-bottom: 1px dashed var(--border); }
.post-single .post-content { color: var(--content); font-size: 1.05rem; line-height: 1.8; }
.post-single .post-content p { margin-bottom: 18px; }
.post-single .post-content h2 { font-family: var(--font-serif); font-size: 1.4rem; margin: 28px 0 14px; }
.post-single .post-content h3 { font-size: 1.2rem; margin: 22px 0 10px; }
.post-single .post-content img { display: block; margin: 18px auto; box-shadow: var(--shadow); }
.post-single .post-content code { background: var(--code-bg); padding: 2px 6px; border-radius: 4px; font-family: var(--font-mono); font-size: .9em; }
.post-single .post-content pre { background: var(--code-block-bg); padding: 16px; border-radius: 6px; overflow-x: auto; margin: 18px 0; }
.post-single .post-content pre code { background: none; padding: 0; }
.post-single .post-content ul, .post-single .post-content ol { margin: 0 0 18px 24px; }
.post-single .post-content blockquote {
  border-left: 3px solid var(--link);
  padding-left: 14px;
  margin: 18px 0;
  color: var(--secondary);
  font-style: italic;
}

.back-link { margin-top: 24px; display: inline-block; font-size: .9rem; color: var(--secondary); }
.back-link:hover { color: var(--link); }

/* -------- About -------- */
.about-content { background: var(--entry); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px; }
.about-content p { margin-bottom: 14px; color: var(--content); line-height: 1.8; }
.about-content h2 { font-family: var(--font-serif); font-size: 1.3rem; margin: 20px 0 10px; }
.contact-list { list-style: none; margin-top: 12px; }
.contact-list li { margin: 6px 0; }

/* -------- Contact Form -------- */
.contact-form { background: var(--entry); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px; max-width: 580px; }
.contact-form .form-row { margin-bottom: 14px; }
.contact-form label { display:block; font-size: .85rem; color: var(--secondary); margin-bottom: 4px; font-weight: 500; }
.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--theme);
  color: var(--primary);
  font-family: inherit;
  font-size: .95rem;
}
.contact-form textarea { resize: vertical; min-height: 110px; }
.contact-form input:focus,
.contact-form textarea:focus { outline: 2px solid var(--link); outline-offset: 1px; border-color: transparent; }
.btn-primary {
  background: var(--link);
  color: white;
  border: none;
  padding: 8px 22px;
  border-radius: 6px;
  cursor: pointer;
  font-size: .95rem;
  font-family: inherit;
  transition: background .2s;
}
.btn-primary:hover { background: var(--link-hover); }
.form-tip { color: var(--tertiary); font-size: .8rem; margin-top: 4px; }
.form-msg { font-size: .9rem; margin-top: 8px; min-height: 1.2em; }
.form-msg.ok { color: #2a9d4a; }
.form-msg.err { color: #d8453d; }

/* -------- Footer -------- */
.site-footer {
  text-align: center;
  padding: 20px;
  border-top: 1px solid var(--border);
  color: var(--tertiary);
  font-size: .85rem;
  background: var(--theme);
}
.site-footer a { color: var(--secondary); }
.site-footer a:hover { color: var(--primary); }

/* -------- Tags -------- */
.tags-list { display:flex; flex-wrap:wrap; gap:6px; }
.tag {
  background: var(--code-bg);
  color: var(--secondary);
  padding: 2px 10px;
  font-size: .78rem;
  border-radius: 12px;
}

/* -------- Pagination -------- */
.pagination {
  display: flex; justify-content: space-between; gap: 8px;
  margin: 24px 0;
}
.pagination a, .pagination span {
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: .9rem;
  color: var(--secondary);
}
.pagination a:hover { color: var(--link); border-color: var(--link); text-decoration: none; }
.pagination .current { background: var(--link); color: white; border-color: var(--link); }

/* -------- Admin (login + dashboard) -------- */
.admin-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--theme);
}
.login-card {
  width: 360px;
  background: var(--entry);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  box-shadow: var(--shadow);
}
.login-card h1 {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  margin-bottom: 4px;
  text-align: center;
}
.login-card p.sub { text-align: center; color: var(--tertiary); font-size: .85rem; margin-bottom: 22px; }
.login-card input {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--theme);
  color: var(--primary);
  font-family: inherit;
  font-size: .95rem;
  margin-bottom: 12px;
}
.login-card button { width: 100%; }

.dashboard {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 20px 80px;
}
.dash-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}
.dash-header h1 { font-family: var(--font-serif); font-size: 1.6rem; }
.dash-tabs {
  display: flex; gap: 4px; margin-bottom: 18px;
  border-bottom: 1px solid var(--border);
}
.dash-tabs button {
  background: none;
  border: none;
  padding: 10px 16px;
  cursor: pointer;
  font-family: inherit;
  font-size: .95rem;
  color: var(--secondary);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.dash-tabs button.active {
  color: var(--link);
  border-bottom-color: var(--link);
  font-weight: 600;
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

.card {
  background: var(--entry);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  margin-bottom: 18px;
}
.card h2 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: .92rem;
}
.table th, .table td {
  padding: 10px 8px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.table th {
  font-weight: 600;
  color: var(--secondary);
  background: var(--code-bg);
  font-size: .82rem;
  text-transform: uppercase;
  letter-spacing: .5px;
}
.table tr.dim td { opacity: .5; }
.table .actions { display: flex; gap: 6px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 5px 12px;
  border-radius: 5px;
  border: 1px solid var(--border);
  background: var(--theme);
  color: var(--primary);
  cursor: pointer;
  font-family: inherit;
  font-size: .85rem;
  transition: all .15s;
}
.btn:hover { border-color: var(--link); color: var(--link); text-decoration: none; }
.btn.danger:hover { color: #d8453d; border-color: #d8453d; }
.btn.success { background: #2a9d4a; color: white; border-color: #2a9d4a; }
.btn.success:hover { background: #22863e; border-color: #22863e; color: white; }
.btn.primary { background: var(--link); color: white; border-color: var(--link); }
.btn.primary:hover { background: var(--link-hover); border-color: var(--link-hover); color: white; }

.tag-pill {
  display: inline-block;
  padding: 1px 8px;
  font-size: .75rem;
  border-radius: 10px;
  background: var(--code-bg);
  color: var(--secondary);
  margin-right: 4px;
}

.editor-form .form-row { margin-bottom: 14px; }
.editor-form label { display:block; font-size: .85rem; color: var(--secondary); margin-bottom: 4px; font-weight: 500; }
.editor-form input[type="text"],
.editor-form input[type="url"],
.editor-form input[type="date"],
.editor-form textarea,
.editor-form select {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--theme);
  color: var(--primary);
  font-family: inherit;
  font-size: .95rem;
}
.editor-form textarea { resize: vertical; line-height: 1.6; }
.editor-form textarea.tall { min-height: 320px; font-family: var(--font-mono); font-size: .9rem; }
.editor-form .row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.editor-form .form-actions { display: flex; gap: 8px; margin-top: 6px; }
.lang-tabs { display: flex; gap: 6px; margin-bottom: 8px; }
.lang-tabs button {
  background: none; border: 1px solid var(--border);
  padding: 4px 12px; font-size: .85rem;
  border-radius: 4px; cursor: pointer;
  color: var(--secondary);
}
.lang-tabs button.active { background: var(--link); color: white; border-color: var(--link); }

.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 12px;
  margin-top: 12px;
}
.image-card {
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  background: var(--theme);
  position: relative;
}
.image-card img { width: 100%; height: 120px; object-fit: cover; border-radius: 0; display: block; }
.image-card .img-name { padding: 6px 8px; font-size: .75rem; color: var(--secondary); word-break: break-all; }
.image-card .img-actions { display: flex; gap: 4px; padding: 4px 8px 8px; }
.image-card .img-actions .btn { font-size: .75rem; padding: 3px 8px; }

.upload-box {
  border: 2px dashed var(--border);
  border-radius: 8px;
  padding: 24px;
  text-align: center;
  cursor: pointer;
  transition: all .2s;
}
.upload-box:hover, .upload-box.drag {
  border-color: var(--link);
  background: var(--code-bg);
}
.upload-box input[type=file] { display: none; }
.upload-box p { color: var(--secondary); font-size: .9rem; }

/* Modal */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.4);
  display: none; align-items: center; justify-content: center;
  z-index: 200;
}
.modal-backdrop.show { display: flex; }
.modal {
  background: var(--entry);
  border-radius: 10px;
  width: min(560px, 92vw);
  max-height: 90vh;
  overflow: auto;
  padding: 24px;
  box-shadow: 0 20px 50px rgba(0,0,0,.25);
}
.modal h3 { font-family: var(--font-serif); font-size: 1.2rem; margin-bottom: 14px; }
.modal-footer { display: flex; justify-content: flex-end; gap: 8px; margin-top: 14px; }

.status-bar { position: fixed; top: 16px; right: 16px; z-index: 300; display: flex; flex-direction: column; gap: 8px; }
.toast {
  background: var(--entry);
  border: 1px solid var(--border);
  border-left: 4px solid var(--link);
  padding: 10px 16px;
  border-radius: 6px;
  font-size: .9rem;
  box-shadow: var(--shadow);
  animation: slideIn .25s;
}
.toast.success { border-left-color: #2a9d4a; }
.toast.error { border-left-color: #d8453d; }
@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* Profile Avatar */
.avatar {
  width: 80px; height: 80px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--border);
}

/* Lang switcher active */
.lang-switcher button.active { color: var(--link); border-color: var(--link); }

/* Responsive */
@media (max-width: 640px) {
  main { padding: 20px 14px 50px; }
  .navbar .container { padding: 12px 14px; }
  .navbar nav { gap: 12px; font-size: .9rem; }
  .post-single { padding: 20px; }
  .about-content { padding: 20px; }
  .editor-form .row-2 { grid-template-columns: 1fr; }
  .toolbar { gap: 6px; }
}

/* ===================== Messages (admin) ===================== */
.msg-badge {
  display: inline-block;
  background: #d9534f;
  color: #fff;
  border-radius: 999px;
  padding: 1px 7px;
  font-size: 0.75em;
  margin-left: 6px;
  vertical-align: middle;
  min-width: 18px;
  text-align: center;
}
.msg-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 16px;
  min-height: 60vh;
}
.msg-list-pane { padding: 0; overflow: hidden; }
.msg-list-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border, #e5e5e5);
  background: var(--soft-bg, #fafafa);
}
.msg-list-toolbar select {
  flex: 1;
  padding: 4px 8px;
  border: 1px solid var(--border, #ccc);
  border-radius: 4px;
  background: var(--input-bg, #fff);
  color: var(--fg, inherit);
  font-size: 0.9em;
}
.msg-list {
  list-style: none;
  padding: 0;
  margin: 0;
  max-height: 70vh;
  overflow-y: auto;
}
.msg-item {
  padding: 12px;
  border-bottom: 1px solid var(--border, #e5e5e5);
  cursor: pointer;
  position: relative;
  transition: background 0.1s;
}
.msg-item:hover { background: var(--hover-bg, rgba(0,0,0,0.03)); }
.msg-item.unread { background: var(--unread-bg, rgba(66, 133, 244, 0.06)); }
.msg-item.unread .msg-name { font-weight: 700; }
.msg-item.selected { background: var(--selected-bg, rgba(66, 133, 244, 0.15)); }
.msg-item.deleted { opacity: 0.55; }
.msg-row-1 {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  font-size: 0.95em;
}
.msg-name { font-weight: 600; }
.msg-date { color: var(--muted, #888); font-size: 0.8em; white-space: nowrap; }
.msg-row-2 { margin-top: 4px; }
.msg-preview {
  font-size: 0.85em;
  color: var(--muted, #666);
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.msg-replied-badge {
  display: inline-block;
  margin-top: 4px;
  font-size: 0.7em;
  color: #1f7a3e;
  background: #d8f5e3;
  padding: 1px 6px;
  border-radius: 3px;
}
.msg-empty {
  padding: 24px;
  text-align: center;
  color: var(--muted, #888);
  list-style: none;
}

.msg-detail-pane { padding: 18px; }
.msg-detail-header h2 { margin: 0 0 4px; }
.msg-detail-meta {
  font-size: 0.85em;
  color: var(--muted, #666);
  margin-bottom: 14px;
}
.msg-detail-meta a { color: var(--accent, #1f7a3e); }
.msg-tag-deleted {
  background: #fde2e1;
  color: #a94442;
  padding: 1px 6px;
  border-radius: 3px;
  font-size: 0.85em;
}
.msg-original {
  background: var(--soft-bg, #fafafa);
  padding: 12px 14px;
  border-left: 3px solid var(--accent, #1f7a3e);
  border-radius: 4px;
  margin-bottom: 18px;
}
.msg-original-label {
  font-size: 0.75em;
  text-transform: uppercase;
  color: var(--muted, #888);
  margin-bottom: 6px;
  letter-spacing: 0.05em;
}
.msg-original-body {
  white-space: pre-wrap;
  word-wrap: break-word;
}
.msg-replies-label {
  font-weight: 600;
  margin-bottom: 8px;
  font-size: 0.9em;
}
.msg-reply {
  background: var(--reply-bg, #eaf3ff);
  padding: 10px 12px;
  border-radius: 4px;
  margin-bottom: 8px;
}
.msg-reply-meta {
  font-size: 0.78em;
  color: var(--muted, #666);
  margin-bottom: 4px;
}
.msg-reply-body {
  white-space: pre-wrap;
  word-wrap: break-word;
}
.msg-reply-form {
  margin-top: 18px;
  border-top: 1px solid var(--border, #e5e5e5);
  padding-top: 14px;
}
.msg-reply-form label {
  font-weight: 600;
  font-size: 0.9em;
  display: block;
  margin-bottom: 6px;
}
.msg-reply-form textarea {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border, #ccc);
  border-radius: 4px;
  background: var(--input-bg, #fff);
  color: var(--fg, inherit);
  resize: vertical;
  font-family: inherit;
  font-size: 0.95em;
  box-sizing: border-box;
}
.msg-reply-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 8px;
}
.msg-detail-actions {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--border, #e5e5e5);
  display: flex;
  gap: 8px;
}

@media (max-width: 800px) {
  .msg-layout { grid-template-columns: 1fr; }
  .msg-list-pane { max-height: 40vh; }
}