/* =================================================================
   admin.css — Giao diện trang quản trị (đăng nhập + soạn thảo)
   Dùng lại biến màu & font từ style.css. Phong cách terminal đồng bộ.
   ================================================================= */

.admin-body {
  min-height: 100vh;
  background: var(--bg);
}

.tp { color: var(--accent); font-family: var(--font-mono); }

/* ---- Nút (mở rộng .btn của style.css) ---- */
.admin-body .btn { margin-top: 0; cursor: pointer; border: 1px solid transparent; line-height: 1.4; }
.btn-primary { color: var(--bg); background: var(--accent); border-color: var(--accent); }
.btn-ghost {
  color: var(--ink-2); background: transparent; border-color: var(--line);
}
.btn-ghost:hover { color: var(--ink); border-color: var(--ink-3); opacity: 1; }
.btn-block { display: block; width: 100%; text-align: center; }
.btn-sm { font-size: 12.5px; padding: 8px 14px; }
.btn-danger {
  color: #ff6b6b; background: transparent; border-color: rgba(255, 107, 107, 0.35);
}
.btn-danger:hover { background: rgba(255, 107, 107, 0.1); border-color: rgba(255, 107, 107, 0.6); opacity: 1; }

/* ---- Trường nhập liệu ---- */
.fld { display: flex; flex-direction: column; gap: 7px; }
.fld-lbl {
  font-family: var(--font-mono); font-size: 11.5px; letter-spacing: 0.04em;
  text-transform: uppercase; color: var(--ink-3); font-weight: 600;
}
.fld-hint { text-transform: none; letter-spacing: 0; color: var(--ink-3); font-weight: 400; }
.fld input,
.fld textarea {
  font-family: var(--font-body); font-size: 15px; color: var(--ink);
  background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 11px 13px; width: 100%; transition: border-color 0.15s, box-shadow 0.15s;
}
.fld input:focus,
.fld textarea:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
input[type="date"] { color-scheme: dark; }
html[data-theme="light"] input[type="date"] { color-scheme: light; }

/* ---- Thông báo ---- */
.alert {
  font-size: 14px; padding: 12px 15px; border-radius: var(--radius-sm);
  margin-bottom: 18px; border: 1px solid var(--line);
}
.alert-ok { background: var(--accent-soft); border-color: var(--accent); color: var(--ink); }
.alert-err {
  background: rgba(255, 107, 107, 0.1); border-color: rgba(255, 107, 107, 0.4); color: var(--ink);
}

/* =================================================================
   ĐĂNG NHẬP
   ================================================================= */
.login-wrap {
  min-height: 100vh; display: grid; place-items: center; padding: 24px;
}
.login-card {
  width: 100%; max-width: 380px; background: var(--bg-2);
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 32px 30px; box-shadow: var(--shadow);
}
.login-prompt {
  font-family: var(--font-body); font-size: 12.5px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.05em; color: var(--accent); margin-bottom: 14px;
}
.login-title {
  font-family: var(--font-display); font-size: 26px; font-weight: 700;
  letter-spacing: -0.02em; margin-bottom: 4px;
}
.login-sub { color: var(--ink-2); font-size: 14.5px; margin-bottom: 22px; }
.login-form { display: flex; flex-direction: column; gap: 15px; }
.login-form .btn { margin-top: 6px; }
.login-hint {
  margin-top: 18px; font-size: 12.5px; color: var(--ink-2); line-height: 1.6;
  padding: 11px 13px; background: var(--bg-3); border-radius: var(--radius-sm);
  border: 1px dashed var(--line);
}
.login-hint code, .login-sub code {
  font-family: var(--font-mono); font-size: 0.92em; color: var(--accent-2);
}
.login-back { margin-top: 18px; font-size: 13px; }
.login-back a { color: var(--ink-3); text-decoration: none; font-family: var(--font-mono); }
.login-back a:hover { color: var(--accent); }

/* =================================================================
   THANH TRÊN CÙNG
   ================================================================= */
.adm-top {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  gap: 14px; padding: 12px 20px;
  background: var(--bg-2);
  border-bottom: 1px solid var(--line);
}
.adm-brand {
  font-family: var(--font-display); font-weight: 700; font-size: 17px;
  color: var(--ink); text-decoration: none; letter-spacing: -0.01em;
}
.adm-brand .tp { font-weight: 400; margin-right: 1px; }
.adm-tag {
  font-family: var(--font-mono); font-size: 10.5px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.08em; color: var(--accent);
  border: 1px solid var(--accent); border-radius: 5px; padding: 1px 6px;
  margin-left: 6px; vertical-align: 2px;
}
.adm-top-r { display: flex; align-items: center; gap: 9px; }

/* =================================================================
   BỐ CỤC: SIDEBAR + EDITOR
   ================================================================= */
.adm-layout {
  display: grid; grid-template-columns: 280px 1fr;
  gap: 0; align-items: start; min-height: calc(100vh - 57px);
}
.adm-side {
  position: sticky; top: 57px; align-self: start;
  height: calc(100vh - 57px); overflow-y: auto;
  border-right: 1px solid var(--line); padding: 20px 16px;
  background: var(--bg);
}
.adm-side > .btn { margin-bottom: 18px; }
.adm-side-head {
  display: flex; align-items: center; justify-content: space-between;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.05em;
  text-transform: uppercase; color: var(--ink-3); font-weight: 600;
  padding: 0 4px 10px; border-bottom: 1px solid var(--line-soft); margin-bottom: 8px;
}
.adm-count {
  background: var(--bg-3); color: var(--ink-2); border-radius: 20px;
  padding: 1px 8px; font-size: 11px;
}
.adm-list { display: flex; flex-direction: column; gap: 2px; }
.adm-empty { color: var(--ink-3); font-size: 13.5px; padding: 14px 6px; line-height: 1.6; }
.adm-item {
  display: flex; flex-direction: column; gap: 3px;
  padding: 10px 11px; border-radius: var(--radius-sm);
  text-decoration: none; transition: background 0.13s;
  border: 1px solid transparent;
}
.adm-item:hover { background: var(--bg-2); }
.adm-item.is-active { background: var(--accent-soft); border-color: var(--accent-line); }
.adm-item-title {
  font-size: 14px; font-weight: 600; color: var(--ink); line-height: 1.35;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.adm-item-meta { font-family: var(--font-mono); font-size: 11px; color: var(--ink-3); }
.adm-item.is-active .adm-item-meta { color: var(--accent); }

/* =================================================================
   EDITOR
   ================================================================= */
.adm-main { padding: 26px 28px 60px; max-width: 1000px; }

.ed-head { display: flex; align-items: flex-start; gap: 16px; }
.ed-title {
  flex: 1; font-family: var(--font-display); font-size: 27px; font-weight: 700;
  letter-spacing: -0.02em; color: var(--ink);
  background: transparent; border: none; border-bottom: 2px solid transparent;
  padding: 4px 2px; line-height: 1.25;
}
.ed-title::placeholder { color: var(--ink-3); }
.ed-title:focus { outline: none; border-bottom-color: var(--accent); }
.ed-actions { display: flex; align-items: center; gap: 12px; padding-top: 6px; white-space: nowrap; }
.ed-permalink {
  font-family: var(--font-mono); font-size: 12.5px; color: var(--ink-3); text-decoration: none;
}
.ed-permalink:hover { color: var(--accent); }

.ed-slug {
  font-family: var(--font-mono); font-size: 12px; color: var(--ink-3);
  margin: 8px 0 22px; padding: 2px;
}
.ed-slug code { color: var(--accent-2); }
#slugView:empty::after { content: "tu-dong-tao"; opacity: 0.5; }

.ed-grid {
  display: grid; grid-template-columns: 200px 1fr; gap: 16px 18px; margin-bottom: 26px;
}
.fld-wide { grid-column: 1 / -1; }

/* Tabs Soạn / Xem trước */
.ed-tabs {
  display: flex; align-items: center; gap: 4px;
  border-bottom: 1px solid var(--line); margin-bottom: 0;
}
.ed-tab {
  font-family: var(--font-mono); font-size: 13px; font-weight: 500;
  color: var(--ink-3); background: transparent; border: none; cursor: pointer;
  padding: 10px 14px; border-bottom: 2px solid transparent; margin-bottom: -1px;
  transition: color 0.13s;
}
.ed-tab:hover { color: var(--ink); }
.ed-tab.is-active { color: var(--accent); border-bottom-color: var(--accent); }
.ed-tab-spacer { flex: 1; }
.ed-help { font-family: var(--font-mono); font-size: 11.5px; color: var(--ink-3); }
.ed-help code { color: var(--accent-2); }

.ed-pane { margin-top: 0; }
.ed-body {
  width: 100%; min-height: 52vh; resize: vertical;
  font-family: var(--font-mono); font-size: 14.5px; line-height: 1.75; color: var(--ink);
  background: var(--bg-2); border: 1px solid var(--line); border-top: none;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  padding: 18px 18px; tab-size: 2;
}
.ed-body:focus { outline: none; border-color: var(--line); box-shadow: inset 0 2px 0 -1px var(--accent-soft); }

.ed-preview {
  min-height: 52vh; background: var(--bg-2);
  border: 1px solid var(--line); border-top: none;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  padding: 22px 24px;
}
.prev-msg { color: var(--ink-3); font-family: var(--font-mono); font-size: 13.5px; }

.danger-form {
  margin-top: 34px; padding-top: 20px; border-top: 1px dashed var(--line);
}

/* =================================================================
   RESPONSIVE
   ================================================================= */
@media (max-width: 860px) {
  .adm-layout { grid-template-columns: 1fr; }
  .adm-side {
    position: static; height: auto; width: 100%;
    border-right: none; border-bottom: 1px solid var(--line);
    max-height: 38vh;
  }
  .adm-main { padding: 22px 18px 50px; }
  .ed-grid { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .adm-top { padding: 10px 14px; }
  .adm-top-r .btn-sm { padding: 7px 10px; font-size: 11.5px; }
  .ed-head { flex-direction: column; gap: 12px; }
  .ed-actions { width: 100%; justify-content: space-between; padding-top: 0; }
  .ed-title { font-size: 23px; }
  .login-card { padding: 26px 22px; }
}