/* KTDB Core — style cho các khối shortcode. Dùng chung biến với theme (có fallback). */
.ktdb-generator,
.ktdb-symbols,
.ktdb-tools {
  --acc: var(--ktdb-acc, #e60023);
  --bg: var(--ktdb-bg, #fff);
  --soft: var(--ktdb-soft, #f9f9f9);
  --line: var(--ktdb-line, #e5e5e5);
  --ink: var(--ktdb-ink, #0f0f0f);
  --mut: var(--ktdb-mut, #606060);
}

/* ---- Generator ---- */
.ktdb-generator {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: clamp(16px, 3vw, 24px);
  scroll-margin-top: 84px;
}
.ktdb-gen__label { display: block; font-weight: 700; font-size: 14px; margin-bottom: 9px; }
.ktdb-gen__input {
  width: 100%; font-family: inherit; font-size: clamp(18px, 3vw, 24px); font-weight: 500;
  color: var(--ink); padding: 14px 16px; border: 1px solid var(--line); border-radius: 10px;
  outline: none; background: var(--soft); transition: border-color .15s, box-shadow .15s, background .15s;
}
.ktdb-gen__input:focus { border-color: var(--acc); box-shadow: 0 0 0 3px rgba(230, 0, 35, .12); background: #fff; }
.ktdb-gen__hint { font-size: 13px; color: var(--mut); margin: 10px 2px 16px; }
.ktdb-gen__hint b { color: var(--ink); }
.ktdb-gen__grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(238px, 1fr)); gap: 10px; }

.ktdb-variant {
  text-align: left; cursor: pointer; background: var(--bg); border: 1px solid var(--line);
  border-radius: 12px; padding: 12px 14px; display: flex; flex-direction: column; gap: 5px;
  transition: background .12s, box-shadow .12s, border-color .12s; font-family: inherit;
}
.ktdb-variant:hover { background: var(--soft); border-color: #d0d0d0; box-shadow: 0 4px 14px rgba(0, 0, 0, .07); }
.ktdb-variant__top { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.ktdb-variant__label { font-size: 11.5px; font-weight: 700; letter-spacing: .02em; text-transform: uppercase; color: var(--mut); }
.ktdb-variant__copy { font-size: 11px; font-weight: 700; color: var(--acc); }
.ktdb-variant__text { font-size: 20px; line-height: 1.4; color: var(--ink); word-break: break-word; overflow-wrap: anywhere; }

/* ---- Symbols ---- */
.ktdb-symbols__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(256px, 1fr)); gap: 14px; }
.ktdb-symcard { border: 1px solid var(--line); border-radius: 14px; padding: 16px; background: var(--bg); }
.ktdb-symcard__head { font-weight: 700; font-size: 13.5px; margin-bottom: 12px; color: var(--ink); }
.ktdb-symcard__chars { display: flex; flex-wrap: wrap; gap: 7px; }
.ktdb-char {
  cursor: pointer; font-family: inherit; font-size: 20px; color: var(--ink); width: 42px; height: 42px;
  border-radius: 10px; border: 1px solid var(--line); background: var(--soft);
  transition: transform .1s, background .1s, color .1s;
}
.ktdb-char:hover { transform: scale(1.1); background: var(--acc); color: #fff; border-color: var(--acc); }

.ktdb-blank {
  margin-top: 14px; border: 1px dashed var(--acc); border-radius: 14px; padding: 16px;
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap; background: var(--soft);
}
.ktdb-blank__txt { flex: 1 1 260px; }
.ktdb-blank__title { font-weight: 700; font-size: 13.5px; }
.ktdb-blank__txt p { color: var(--mut); font-size: 13px; margin: 5px 0 0; }
.ktdb-blank__btn {
  cursor: pointer; font-family: inherit; font-weight: 700; font-size: 14px; color: #fff;
  background: var(--acc); border: none; border-radius: 999px; padding: 11px 20px;
}
.ktdb-blank__btn:hover { filter: brightness(1.08); }

/* ---- Tools grid ---- */
.ktdb-tools { display: grid; grid-template-columns: repeat(auto-fill, minmax(232px, 1fr)); gap: 14px; }
.ktdb-tool {
  text-decoration: none; color: inherit; border: 1px solid var(--line); border-radius: 14px;
  padding: 18px; display: block; transition: box-shadow .14s, border-color .14s;
}
.ktdb-tool:hover { box-shadow: 0 6px 20px rgba(0, 0, 0, .08); border-color: #d6d6d6; }
.ktdb-tool__icon { width: 44px; height: 44px; border-radius: 11px; display: grid; place-items: center; font-size: 21px; background: var(--soft); }
.ktdb-tool__name { font-weight: 700; font-size: 16px; margin-top: 13px; }
.ktdb-tool__desc { color: var(--mut); font-size: 13.5px; margin: 5px 0 0; }

/* ---- Toast ---- */
.ktdb-toast {
  position: fixed; left: 50%; bottom: 28px; z-index: 9999; transform: translate(-50%, 14px);
  background: #0f0f0f; color: #fff; border-radius: 10px; padding: 12px 22px; font-weight: 600;
  font-size: 14.5px; box-shadow: 0 12px 36px rgba(0, 0, 0, .28); display: flex; align-items: center;
  gap: 10px; max-width: 90vw; opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s;
}
.ktdb-toast.is-on { opacity: 1; transform: translate(-50%, 0); }
.ktdb-toast__ok { color: #7ee787; }
.ktdb-toast b { font-weight: 700; word-break: break-word; }