/* ============================================================
   stamp-generator / style.css
   V3.9 规范 5.1：颜色与圆角全部跟随网站注入变量，禁止硬编码品牌色
   V3.9 规范 5.2：暗色模式由主站切换变量，插件自动跟随
   V3.9 规范 5.3：容器自适应，任意宽度不横向溢出
   ============================================================ */

/* ---------- container: always fit the host plugin box ---------- */
.stamp-generator-container {
    /* 规范 5.1：自定义色必须基于主题变量派生，不得引入独立色板 */
    --stamp-generator-accent: var(--primary, #2563eb);
    --stamp-generator-accent-hover: var(--primary-hover, #1d4ed8);
    --stamp-generator-surface: var(--bg-input, #fff);
    --stamp-generator-checker: var(--bg-btn, #f3f4f6);

    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    /* 规范 5.3：容器内滚动区兜底，确保永不撑破宿主容器（页面级不产生横向滚动条） */
    overflow-x: auto;
    color: var(--text, #333);
    font-size: 14px;
    line-height: 1.6;
}

.stamp-generator-container * { box-sizing: border-box; }

.stamp-generator-layout {
    display: grid;
    grid-template-columns: 340px minmax(0, 1fr);
    gap: 14px;
    align-items: start;
    width: 100%;
    max-width: 100%;
}

/* ---------- panels ---------- */
.stamp-generator-panel,
.stamp-generator-group {
    width: 100%;
    max-width: 100%;
    border: 1px solid var(--border, #e5e7eb);
    /* 规范 5.1：圆角必须跟随网站后台设置 */
    border-radius: var(--radius, 10px);
    background: var(--stamp-generator-surface);
    padding: 14px;
}

.stamp-generator-side { position: sticky; top: 0; min-width: 0; }
.stamp-generator-main {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
    min-width: 0;
}

/* ---------- panel head ---------- */
.stamp-generator-head {
    display: flex;
    flex-direction: column;
    gap: 2px;
    margin-bottom: 10px;
}
.stamp-generator-headt {
    font-size: 15px;
    font-weight: 600;
    color: var(--text, #333);
}
.stamp-generator-heads {
    font-size: 12px;
    color: var(--text-secondary, #6b7280);
}
.stamp-generator-ghead {
    font-size: 14px;
    font-weight: 600;
    color: var(--text, #333);
    padding-bottom: 8px;
    margin-bottom: 10px;
    border-bottom: 1px solid var(--border, #e5e7eb);
}

/* ---------- preview stage: checkerboard shows transparency ---------- */
.stamp-generator-stage {
    width: 100%;
    max-width: 100%;
    border: 1px solid var(--border, #e5e7eb);
    border-radius: var(--radius-sm, 6px);
    /* 棋盘格底与格均取自主题变量，暗色下自动跟随 */
    background-color: var(--stamp-generator-surface);
    background-image:
        linear-gradient(45deg, var(--stamp-generator-checker) 25%, transparent 25%, transparent 75%, var(--stamp-generator-checker) 75%),
        linear-gradient(45deg, var(--stamp-generator-checker) 25%, transparent 25%, transparent 75%, var(--stamp-generator-checker) 75%);
    background-size: 16px 16px;
    background-position: 0 0, 8px 8px;
    padding: 8px;
    overflow: hidden;
}
.stamp-generator-canvas {
    display: block;
    width: 100%;
    height: auto;
    max-width: 100%;
    border-radius: var(--radius-sm, 6px);
}

.stamp-generator-meta {
    margin: 8px 0 0;
    font-size: 12px;
    color: var(--text-secondary, #6b7280);
    word-break: break-all;
}

/* ---------- buttons ---------- */
.stamp-generator-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
}
.stamp-generator-btn {
    flex: 1 1 auto;
    min-width: 72px;
    padding: 7px 12px;
    font-size: 13px;
    font-family: inherit;
    color: var(--text, #333);
    background: var(--bg-btn, #f3f4f6);
    border: 1px solid var(--border, #e5e7eb);
    border-radius: var(--radius-sm, 6px);
    cursor: pointer;
    transition: background-color .15s, border-color .15s, color .15s;
}
.stamp-generator-btn:hover {
    background: var(--bg-btn-hover, #f9fafb);
    border-color: var(--stamp-generator-accent);
    color: var(--stamp-generator-accent);
}
.stamp-generator-btn-primary {
    /* 主题色填充，前景固定为白色以保证任意主题色下均可读 */
    color: #fff;
    background: var(--stamp-generator-accent);
    border-color: var(--stamp-generator-accent);
}
.stamp-generator-btn-primary:hover {
    color: #fff;
    background: var(--stamp-generator-accent-hover);
    border-color: var(--stamp-generator-accent-hover);
}
.stamp-generator-btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* 键盘可达性：焦点环跟随主题色 */
.stamp-generator-btn:focus-visible,
.stamp-generator-preset:focus-visible,
.stamp-generator-select:focus-visible,
.stamp-generator-text:focus-visible,
.stamp-generator-num:focus-visible,
.stamp-generator-color:focus-visible,
.stamp-generator-range:focus-visible {
    outline: 2px solid var(--stamp-generator-accent);
    outline-offset: 2px;
}

.stamp-generator-message {
    margin: 8px 0 0;
    font-size: 12px;
    color: var(--text-secondary, #6b7280);
    min-height: 18px;
}
.stamp-generator-message.stamp-generator-ok { color: var(--success, #16a34a); }
.stamp-generator-message.stamp-generator-warn { color: var(--warning, #d97706); }
.stamp-generator-message.stamp-generator-err { color: var(--danger, #dc2626); }

.stamp-generator-note {
    margin: 10px 0 0;
    font-size: 12px;
    color: var(--text-secondary, #6b7280);
}

/* ---------- presets ---------- */
.stamp-generator-presets {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(104px, 1fr));
    gap: 8px;
}
.stamp-generator-preset {
    padding: 7px 8px;
    font-size: 12px;
    font-family: inherit;
    text-align: center;
    color: var(--text, #333);
    background: var(--bg-btn, #f3f4f6);
    border: 1px solid var(--border, #e5e7eb);
    border-radius: var(--radius-sm, 6px);
    cursor: pointer;
    transition: background-color .15s, border-color .15s, color .15s;
}
.stamp-generator-preset:hover {
    color: var(--stamp-generator-accent);
    border-color: var(--stamp-generator-accent);
    background: var(--bg-btn-hover, #f9fafb);
}

/* ---------- control grid ---------- */
.stamp-generator-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 10px 14px;
}
.stamp-generator-field {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
    min-width: 0;
}
.stamp-generator-field-wide { grid-column: 1 / -1; }
.stamp-generator-fl {
    flex: 0 0 auto;
    font-size: 12px;
    color: var(--text-secondary, #6b7280);
}
.stamp-generator-fv {
    flex: 0 0 auto;
    min-width: 42px;
    text-align: right;
    font-size: 12px;
    font-variant-numeric: tabular-nums;
    color: var(--text-secondary, #6b7280);
}

/* ---------- range slider: track + thumb follow theme ---------- */
.stamp-generator-range {
    flex: 1 1 90px;
    min-width: 60px;
    height: 22px;
    margin: 0;
    padding: 0;
    background: transparent;
    -webkit-appearance: none;
    appearance: none;
    accent-color: var(--stamp-generator-accent);
    cursor: pointer;
}
/* WebKit / Blink */
.stamp-generator-range::-webkit-slider-runnable-track {
    height: 6px;
    border-radius: var(--radius-sm, 6px);
    background: var(--border, #e5e7eb);
}
.stamp-generator-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    margin-top: -5px;
    border: 2px solid var(--stamp-generator-surface);
    border-radius: 50%;
    background: var(--stamp-generator-accent);
    box-shadow: 0 0 0 1px var(--border, #e5e7eb);
}
.stamp-generator-range:hover::-webkit-slider-thumb {
    background: var(--stamp-generator-accent-hover);
}
/* Firefox */
.stamp-generator-range::-moz-range-track {
    height: 6px;
    border-radius: var(--radius-sm, 6px);
    background: var(--border, #e5e7eb);
}
.stamp-generator-range::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border: 2px solid var(--stamp-generator-surface);
    border-radius: 50%;
    background: var(--stamp-generator-accent);
}
.stamp-generator-range:hover::-moz-range-thumb {
    background: var(--stamp-generator-accent-hover);
}

.stamp-generator-select,
.stamp-generator-text,
.stamp-generator-num {
    flex: 1 1 110px;
    min-width: 70px;
    max-width: 100%;
    padding: 5px 8px;
    font-size: 13px;
    font-family: inherit;
    color: var(--text, #333);
    background: var(--stamp-generator-surface);
    border: 1px solid var(--border, #e5e7eb);
    border-radius: var(--radius-sm, 6px);
}
.stamp-generator-select:focus,
.stamp-generator-text:focus,
.stamp-generator-num:focus {
    border-color: var(--stamp-generator-accent);
}
.stamp-generator-text { flex: 1 1 220px; }
.stamp-generator-area {
    flex: 1 1 240px;
    width: 100%;
    min-width: 0;
    min-height: 54px;
    max-width: 100%;
    padding: 6px 8px;
    font-size: 13px;
    font-family: inherit;
    line-height: 1.5;
    color: var(--text, #333);
    background: var(--stamp-generator-surface);
    border: 1px solid var(--border, #e5e7eb);
    border-radius: var(--radius-sm, 6px);
    resize: vertical;
}
.stamp-generator-area::placeholder { color: var(--text-secondary, #6b7280); }
.stamp-generator-area:focus { border-color: var(--stamp-generator-accent); }
.stamp-generator-area:focus-visible {
    outline: 2px solid var(--stamp-generator-accent);
    outline-offset: 2px;
}
.stamp-generator-num { flex: 0 1 92px; }
.stamp-generator-color {
    flex: 0 0 auto;
    width: 42px;
    height: 26px;
    padding: 0;
    background: var(--stamp-generator-surface);
    border: 1px solid var(--border, #e5e7eb);
    border-radius: var(--radius-sm, 6px);
    cursor: pointer;
}
.stamp-generator-check {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text, #333);
    cursor: pointer;
}
.stamp-generator-check input {
    accent-color: var(--stamp-generator-accent);
    width: 15px;
    height: 15px;
}

/* ---------- narrow: single column, preview on top ---------- */
@media (max-width: 900px) {
    .stamp-generator-layout { grid-template-columns: minmax(0, 1fr); }
    .stamp-generator-side { position: static; }
    .stamp-generator-stage { max-width: 420px; margin: 0 auto; }
}

@media (max-width: 480px) {
    .stamp-generator-container { font-size: 13px; }
    .stamp-generator-panel,
    .stamp-generator-group { padding: 11px; }
    .stamp-generator-grid { grid-template-columns: minmax(0, 1fr); }
    .stamp-generator-presets { grid-template-columns: repeat(auto-fit, minmax(88px, 1fr)); }
    .stamp-generator-btn { flex: 1 1 100%; }
    .stamp-generator-actions { flex-direction: column; }
}