/* ============================================================
   admin.css — 後台 /admin (黑底, 與前台同一個人設計的)
   ============================================================ */
.admin { display: grid; grid-template-columns: clamp(220px, 22vw, 300px) 1fr; min-height: 100vh; }

/* ---- 左側導覽 ---- */
.admin__side { border-right: 1px solid var(--line); padding: clamp(1.6rem, 3vw, 2.4rem); display: flex; flex-direction: column; gap: 2.4rem; position: sticky; top: 0; height: 100vh; }
.admin__brand { font-family: var(--font-display); font-weight: 700; font-size: var(--text-caption); letter-spacing: var(--tracking-wide); color: var(--ink); }
.admin__brand small { display: block; font-family: var(--font-body); font-weight: 300; font-size: var(--text-micro); color: var(--ink-dim); letter-spacing: var(--tracking-wide); margin-top: 0.5rem; text-transform: uppercase; }
.admin__nav { display: flex; flex-direction: column; }
.admin__nav a {
  font-family: var(--font-body); font-weight: 300; font-size: var(--text-caption);
  letter-spacing: var(--tracking-body); color: var(--ink-dim);
  padding: 0.95rem 0; border-top: 1px solid var(--line);
  display: flex; align-items: center; gap: 0.8rem; transition: color var(--dur-fast);
}
.admin__nav a:last-child { border-bottom: 1px solid var(--line); }
.admin__nav a::before { content: ""; width: 5px; height: 5px; background: var(--line); transition: background var(--dur-fast); flex-shrink: 0; }
.admin__nav a:hover { color: var(--ink); }
.admin__nav a.is-active { color: var(--ink); }
.admin__nav a.is-active::before { background: var(--warm); }
.admin__side-foot { margin-top: auto; font-family: var(--font-body); font-weight: 300; font-size: var(--text-micro); color: var(--ink-dim); letter-spacing: var(--tracking-body); line-height: 1.8; }
.admin__side-foot .dot { display: inline-block; width: 6px; height: 6px; background: var(--warm); border-radius: 50%; margin-right: 6px; }

/* ---- 右側表單 ---- */
.admin__main { padding: clamp(2rem, 4vw, 4rem) clamp(1.6rem, 5vw, 5rem); max-width: 920px; }
.admin__head { display: flex; align-items: baseline; justify-content: space-between; gap: 2rem; margin-bottom: clamp(2.4rem, 5vw, 3.5rem); flex-wrap: wrap; }
.admin__crumb { font-family: var(--font-body); font-weight: 300; font-size: var(--text-micro); letter-spacing: var(--tracking-wide); text-transform: uppercase; color: var(--ink-dim); }
.admin__crumb b { color: var(--ink); font-weight: 400; }
.admin__status { font-family: var(--font-body); font-weight: 300; font-size: var(--text-micro); color: var(--ink-dim); letter-spacing: var(--tracking-body); display: flex; align-items: center; gap: 0.6rem; }
.admin__status .live { width: 7px; height: 7px; border-radius: 50%; background: var(--ink-dim); transition: background var(--dur-fast); }
.admin__status.saved .live { background: var(--warm); }

.field { margin-bottom: clamp(2rem, 4vw, 3rem); }
.field__label { display: block; font-family: var(--font-body); font-weight: 300; font-size: var(--text-micro); letter-spacing: var(--tracking-wide); text-transform: uppercase; color: var(--ink-dim); margin-bottom: 0.9rem; }
.field__label .req { color: var(--warm); }

/* 標題輸入: 無外框, 底線, Space Grotesk */
.title-input {
  width: 100%; background: none; border: none; border-bottom: 1px solid var(--line);
  font-family: var(--font-display); font-weight: 700; font-size: clamp(1.6rem, 4vw, 2.8rem);
  letter-spacing: 0.01em; color: var(--ink); padding: 0.4rem 0 0.9rem;
  transition: border-color var(--dur-normal) var(--ease-shutter);
}
.title-input::placeholder { color: var(--line); }
.title-input:focus { outline: none; border-color: var(--warm); }

/* 一般底線輸入 */
.line-input {
  width: 100%; background: none; border: none; border-bottom: 1px solid var(--line);
  font-family: var(--font-body); font-weight: 300; font-size: var(--text-body); color: var(--ink);
  padding: 0.6rem 0; letter-spacing: var(--tracking-body); transition: border-color var(--dur-normal) var(--ease-shutter);
}
.line-input::placeholder { color: var(--ink-dim); opacity: 0.5; }
.line-input:focus { outline: none; border-color: var(--warm); }

.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(1.4rem, 3vw, 2.4rem); }
@media (max-width: 600px) { .field-row { grid-template-columns: 1fr; } }

/* 下拉 (原生 select, 黑底) */
.select { position: relative; }
.select select {
  width: 100%; -webkit-appearance: none; appearance: none; background: var(--surface);
  border: 1px solid var(--line); color: var(--ink); font-family: var(--font-body);
  font-weight: 300; font-size: var(--text-caption); padding: 0.75rem 2.2rem 0.75rem 0.9rem;
  letter-spacing: var(--tracking-body); cursor: pointer; border-radius: 0;
  transition: border-color var(--dur-fast);
}
.select select:focus { outline: none; border-color: var(--warm); }
.select::after { content: ""; position: absolute; right: 0.9rem; top: 50%; width: 7px; height: 7px; border-right: 1px solid var(--ink-dim); border-bottom: 1px solid var(--ink-dim); transform: translateY(-65%) rotate(45deg); pointer-events: none; }

/* ---- 編輯器 (Tiptap 風) ---- */
.editor { border: 1px solid var(--line); }
.editor__bar { display: flex; flex-wrap: wrap; gap: 2px; border-bottom: 1px solid var(--line); padding: 0.5rem; background: var(--surface); }
.editor__bar button {
  background: none; border: none; color: var(--ink-dim); cursor: pointer;
  font-family: var(--font-body); font-weight: 300; font-size: var(--text-caption);
  min-width: 36px; height: 34px; padding: 0 0.6rem; letter-spacing: var(--tracking-body);
  display: inline-flex; align-items: center; justify-content: center;
  transition: color var(--dur-fast), background var(--dur-fast);
}
.editor__bar button:hover { color: var(--ink); background: rgba(255,255,255,0.04); }
.editor__bar button.is-on { color: var(--warm); }
.editor__bar .sep { width: 1px; height: 20px; background: var(--line); margin: 7px 4px; }
.editor__bar button b { font-family: var(--font-display); font-weight: 700; }
.editor__bar button i { font-style: italic; }
.editor__area {
  min-height: 320px; padding: clamp(1.2rem, 3vw, 2rem); background: var(--bg);
  font-family: var(--font-body); font-weight: 300; font-size: var(--text-body);
  line-height: var(--leading-loose); color: var(--ink); letter-spacing: var(--tracking-body);
  outline: none;
}
.editor__area:empty::before { content: attr(data-placeholder); color: var(--ink-dim); opacity: 0.5; }
.editor__area h2 { font-family: var(--font-display); font-weight: 700; font-size: var(--text-title); letter-spacing: var(--tracking-wide); margin: 1.4rem 0 0.8rem; }
.editor__area h3 { font-family: var(--font-display); font-weight: 500; font-size: var(--text-sub); letter-spacing: 0.06em; margin: 1.2rem 0 0.7rem; }
.editor__area blockquote { border-left: 1px solid var(--warm); padding-left: 1.2rem; color: var(--ink-dim); margin: 1.2rem 0; }
.editor__area pre { background: var(--surface); border: 1px solid var(--line); padding: 1rem; font-size: var(--text-caption); overflow-x: auto; margin: 1.2rem 0; }
.editor__area img { margin: 1.2rem 0; filter: grayscale(100%) contrast(1.1); }
.editor__area p { margin-bottom: 1rem; }

/* ---- 封面上傳 (虛線框) ---- */
.uploader {
  border: 1px dashed var(--line); aspect-ratio: 21 / 9; position: relative; overflow: hidden;
  display: flex; align-items: center; justify-content: center; cursor: pointer;
  transition: border-color var(--dur-normal) var(--ease-shutter), background var(--dur-fast);
}
.uploader:hover, .uploader.is-drag { border-color: var(--warm); }
.uploader.is-drag { background: var(--warm-soft); }
.uploader__hint { text-align: center; pointer-events: none; }
.uploader__hint .ico { width: 34px; height: 34px; margin: 0 auto 1rem; position: relative; }
.uploader__hint .ico::before { content: ""; position: absolute; inset: 0; border: 1px solid var(--ink-dim); }
.uploader__hint .ico::after { content: ""; position: absolute; left: 50%; top: 50%; width: 14px; height: 1px; background: var(--ink-dim); box-shadow: 0 0 0 0 var(--ink-dim); transform: translate(-50%,-50%); }
.uploader__hint .ico i { position: absolute; left: 50%; top: 50%; width: 1px; height: 14px; background: var(--ink-dim); transform: translate(-50%,-50%); }
.uploader__hint p { font-family: var(--font-body); font-weight: 300; font-size: var(--text-caption); color: var(--ink-dim); letter-spacing: var(--tracking-body); }
.uploader__hint small { display: block; font-size: var(--text-micro); color: var(--ink-dim); opacity: 0.6; margin-top: 0.5rem; }
.uploader img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; filter: grayscale(100%) contrast(1.15) brightness(0.92); }
.uploader__remove { position: absolute; top: 0.7rem; right: 0.7rem; z-index: 3; background: rgba(10,10,10,0.7); border: 1px solid var(--line); color: var(--ink); width: 32px; height: 32px; cursor: pointer; display: none; align-items: center; justify-content: center; font-family: var(--font-body); }
.uploader.has-img .uploader__remove { display: flex; }
.uploader.has-img:hover { border-style: solid; border-color: var(--line); }
.uploader.has-img .uploader__hint { display: none; }

/* ---- YouTube 預覽 ---- */
.yt-preview { margin-top: 1.2rem; display: none; }
.yt-preview.show { display: block; }
.yt-preview .video-wrapper { position: relative; padding-top: 56.25%; border: 1px solid var(--line); max-width: 480px; }
.yt-preview .video-wrapper img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; filter: grayscale(100%) contrast(1.1) brightness(0.85); }
.yt-preview .video-wrapper .play { position: absolute; left: 50%; top: 50%; transform: translate(-50%,-50%); width: 0; height: 0; border-style: solid; border-width: 12px 0 12px 20px; border-color: transparent transparent transparent var(--warm); }
.yt-preview .meta { font-family: var(--font-body); font-weight: 300; font-size: var(--text-micro); color: var(--ink-dim); margin-top: 0.6rem; letter-spacing: var(--tracking-body); }

/* ---- 多張照片縮圖 (作品用, 此頁示意) ---- */
.thumbs { display: flex; gap: 0.8rem; flex-wrap: wrap; margin-top: 1rem; }
.thumbs .t { width: 64px; height: 64px; overflow: hidden; border: 1px solid var(--line); }
.thumbs .t img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(100%) contrast(1.1); }

/* ---- 動作列 ---- */
.admin__actions { display: flex; align-items: center; gap: 1.6rem; margin-top: clamp(2.5rem, 5vw, 4rem); padding-top: clamp(1.6rem, 3vw, 2.4rem); border-top: 1px solid var(--line); flex-wrap: wrap; }
.btn-ghost {
  font-family: var(--font-body); font-weight: 300; font-size: var(--text-caption);
  letter-spacing: var(--tracking-wide); text-transform: uppercase; color: var(--ink-dim);
  background: none; border: 1px solid var(--line); padding: 0.85rem 1.6rem; cursor: pointer; border-radius: 0;
  transition: color var(--dur-fast), border-color var(--dur-fast);
}
.btn-ghost:hover { color: var(--ink); border-color: var(--ink-dim); }
/* 發布: 暖色文字, 無填色, hover 才填 */
.btn-publish {
  font-family: var(--font-body); font-weight: 400; font-size: var(--text-caption);
  letter-spacing: var(--tracking-wide); text-transform: uppercase; color: var(--warm);
  background: none; border: 1px solid var(--warm); padding: 0.85rem 2rem; cursor: pointer; border-radius: 0;
  transition: color var(--dur-fast) var(--ease-shutter), background var(--dur-fast) var(--ease-shutter);
}
.btn-publish:hover { background: var(--warm); color: var(--bg); }
.btn-publish:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-publish:disabled:hover { background: none; color: var(--warm); }
.admin__saveword { margin-left: auto; font-family: var(--font-body); font-weight: 300; font-size: var(--text-micro); color: var(--ink-dim); letter-spacing: var(--tracking-body); }

/* toast */
.toast { position: fixed; left: 50%; bottom: 2.5rem; transform: translateX(-50%) translateY(20px); background: var(--surface); border: 1px solid var(--warm); color: var(--ink); font-family: var(--font-body); font-weight: 300; font-size: var(--text-caption); padding: 0.9rem 1.6rem; letter-spacing: var(--tracking-body); opacity: 0; pointer-events: none; transition: opacity var(--dur-normal) var(--ease-shutter), transform var(--dur-normal) var(--ease-shutter); z-index: 600; }
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast .dot { display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: var(--warm); margin-right: 8px; }

/* ---- 手機: 導覽改頂部橫列 ---- */
@media (max-width: 768px) {
  .admin { grid-template-columns: 1fr; }
  .admin__side { position: static; height: auto; flex-direction: column; border-right: none; border-bottom: 1px solid var(--line); gap: 1.4rem; }
  .admin__nav { flex-direction: row; flex-wrap: wrap; gap: 0 1.2rem; }
  .admin__nav a { border: none !important; padding: 0.4rem 0; }
  .admin__side-foot { display: none; }
}