/* ==========================================================================
   条形码识别器 /tools/barcode_decoder
   复刻 tools.ai225.com/tools/barcode-decoder 的版式：
     说明行 →（选择图片 | 图片链接+加载）→ 拖拽区 →（预览 | 识别结果）
   配色沿用站点主题变量（暗色 / 亮色自动适配）。
   ========================================================================== */

.bcd-page {
    padding: 20px 20px 48px;
    box-sizing: border-box;
}

/* ---------------- 头部 ---------------- */
.bcd-hero {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    margin-bottom: 16px;
}
.bcd-hero-ico {
    flex: 0 0 auto;
    width: 52px;
    height: 52px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    line-height: 1;
    background: color-mix(in srgb, var(--accent) 14%, transparent);
    border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
}
.bcd-title {
    margin: 0 0 6px;
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.3;
}
.bcd-sub {
    margin: 0;
    font-size: 13.5px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ---------------- 说明行 ---------------- */
.bcd-tip {
    margin: 0 0 14px;
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ---------------- 输入行 ---------------- */
.bcd-inputs {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin-bottom: 12px;
}
.bcd-file-cell { display: flex; align-items: center; gap: 10px; min-width: 0; }
.bcd-file {
    width: 100%;
    min-width: 0;
    font-size: 13px;
    color: var(--text-primary);
    font-family: inherit;
}
.bcd-url-cell { display: flex; align-items: center; gap: 8px; min-width: 0; }
.bcd-url {
    flex: 1 1 auto;
    min-width: 0;
    box-sizing: border-box;
    padding: 9px 11px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 13.5px;
    font-family: inherit;
    outline: none;
    transition: border-color .15s, box-shadow .15s;
}
.bcd-url:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent);
}
.bcd-btn {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    min-height: 34px;
    padding: 0 14px;
    border-radius: 8px;
    border: 1px solid var(--accent);
    background: var(--accent);
    color: #fff;
    font-size: 13.5px;
    font-family: inherit;
    cursor: pointer;
    transition: background .15s, transform .1s, opacity .15s;
}
.bcd-btn:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.bcd-btn:active { transform: scale(.98); }
.bcd-btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }
.bcd-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---------------- 拖拽区 ---------------- */
.bcd-drop {
    padding: 22px;
    border: 2px dashed var(--border-color);
    border-radius: 10px;
    text-align: center;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 14px;
    transition: border-color .15s, background .15s;
}
.bcd-drop.is-over {
    border-color: var(--accent);
    background: color-mix(in srgb, var(--accent) 8%, transparent);
    color: var(--text-primary);
}

/* ---------------- 预览 / 结果 ---------------- */
.bcd-panels {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    align-items: start;
}
.bcd-panel {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 12px;
    box-sizing: border-box;
}
.bcd-preview {
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.bcd-img {
    max-height: 300px;
    max-width: 100%;
    object-fit: contain;
    display: block;
}
.bcd-ph { color: var(--text-secondary); font-size: 13px; }

.bcd-res-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 8px;
}
.bcd-res-t { font-size: 13.5px; font-weight: 600; color: var(--text-primary); }
.bcd-copy {
    flex: 0 0 auto;
    padding: 4px 12px;
    border-radius: 6px;
    border: 0;
    background: var(--accent);
    color: #fff;
    font-size: 12.5px;
    font-family: inherit;
    cursor: pointer;
    transition: background .15s;
}
.bcd-copy:hover { background: var(--accent-hover); }
.bcd-copy:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.bcd-res {
    min-height: 120px;
    font-size: 13.5px;
    line-height: 1.7;
    white-space: pre-wrap;
    word-break: break-word;
    color: var(--text-primary);
}
.bcd-res.is-empty { color: var(--text-secondary); }
/* 识别到的条码类型徽章 */
.bcd-fmt {
    margin-top: 8px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11.5px;
    font-weight: 600;
    color: var(--accent);
    background: color-mix(in srgb, var(--accent) 14%, transparent);
    border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
}

/* 声明了布局的元素必须兜底 hidden（本仓库反复踩过的坑） */
#bcdImg[hidden], #bcdPh[hidden], #bcdCopy[hidden], #bcdFmt[hidden], #bcdToast[hidden] {
    display: none !important;
}
.bcd-canvas { display: none; }

/* ---------------- 关于 ---------------- */
.bcd-about { margin-top: 28px; }
.bcd-about-t { margin: 0 0 10px; font-size: 16px; font-weight: 600; color: var(--text-primary); }
.bcd-about-p { margin: 0 0 18px; font-size: 13.5px; color: var(--text-secondary); line-height: 1.85; }
.bcd-feat-t { margin: 0 0 10px; font-size: 15px; font-weight: 600; color: var(--text-primary); }
.bcd-feat-list {
    margin: 0;
    padding: 0;
    list-style: none;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px 18px;
}
.bcd-feat-list li { font-size: 13px; color: var(--text-secondary); line-height: 1.7; }

/* ---------------- 提示条 ---------------- */
.bcd-toast {
    position: fixed;
    left: 50%;
    bottom: 28px;
    transform: translateX(-50%);
    z-index: 100000;
    max-width: min(90vw, 460px);
    padding: 10px 16px;
    border-radius: 10px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 13.5px;
    line-height: 1.6;
    box-shadow: 0 10px 30px rgba(0, 0, 0, .28);
}
.bcd-toast.is-err {
    border-color: color-mix(in srgb, var(--danger) 55%, transparent);
    color: var(--danger);
}

/* ---------------- 响应式 ---------------- */
@media (max-width: 767px) {
    .bcd-page { padding: 16px 14px 40px; }
    .bcd-hero-ico { width: 44px; height: 44px; font-size: 22px; }
    .bcd-title { font-size: 19px; }
    .bcd-inputs { grid-template-columns: 1fr; }
    .bcd-panels { grid-template-columns: 1fr; }
    .bcd-url, .bcd-url:focus { font-size: 16px; }   /* 防 iOS 聚焦缩放 */
    .bcd-preview { min-height: 180px; }
    .bcd-img { max-height: 240px; }
    .bcd-feat-list { grid-template-columns: 1fr; }
}
@media (max-width: 400px) {
    .bcd-hero-ico { display: none; }
}
@media (prefers-reduced-motion: reduce) {
    .bcd-btn, .bcd-url, .bcd-drop { transition: none; }
}