/* ============================================================
   图片转PDF工具 · 页面专属样式
   迪妙网络空间安全学院 · 反钓工具箱
   布局：设置面板(左) + 图片队列(右)；移动端单列堆叠
   ============================================================ */

/* ---------- 本地运行提示条 ---------- */
.local-tip {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    background: linear-gradient(135deg, #e8f1ff 0%, #f0f5ff 100%);
    border: 1.5px solid rgba(26, 110, 255, 0.15);
    border-radius: var(--radius);
    padding: 20px 24px;
    margin-bottom: 28px;
}
.local-tip .tip-icon {
    width: 40px; height: 40px;
    background: var(--primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.local-tip .tip-icon svg {
    width: 22px; height: 22px;
    color: white;
}
.local-tip h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 4px;
}
.local-tip p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0;
}

/* ---------- 工具主布局 ---------- */
.tool-layout {
    display: grid;
    grid-template-columns: 360px 1fr;
    gap: 24px;
    align-items: start;
}

/* ---------- 左侧设置面板 ---------- */
.panel {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
}
.panel-sticky {
    position: sticky;
    top: 96px;
}
.panel-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 18px;
}
.panel-title .dot {
    width: 6px; height: 6px;
    background: var(--primary);
    border-radius: 50%;
}
.setting-group {
    margin-bottom: 18px;
}
.setting-group:last-child { margin-bottom: 0; }
.setting-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 8px;
}
.setting-hint {
    font-size: 11px;
    color: var(--text-light);
    margin-top: 6px;
    line-height: 1.6;
}
.setting-input,
.setting-select {
    width: 100%;
    padding: 10px 14px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 13px;
    color: var(--text);
    background: white;
    transition: var(--transition);
    outline: none;
}
.setting-input:focus,
.setting-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(26, 110, 255, 0.12);
}

/* 单选胶囊 */
.chip-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.chip {
    padding: 7px 14px;
    border: 1.5px solid var(--border);
    border-radius: 100px;
    background: white;
    font-family: inherit;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}
.chip:hover {
    border-color: var(--primary);
    color: var(--primary);
}
.chip.active {
    background: var(--primary-gradient);
    border-color: transparent;
    color: white;
    box-shadow: 0 4px 12px rgba(26, 110, 255, 0.3);
}

/* 双列小控件 */
.setting-row-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}
.setting-row-2 > div {
    min-width: 0; /* grid item默认min-width:auto，必须放开才能收缩 */
}

/* 滑块 */
.range-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0; /* 允许flex子项收缩，防止滑块撑破容器 */
}
.range-wrap input[type="range"] {
    flex: 1 1 auto;
    min-width: 0;       /* 覆盖浏览器默认固有最小宽度 */
    width: 100%;
    max-width: 100%;
    accent-color: var(--primary);
    height: 4px;
    box-sizing: border-box;
}
.range-val {
    font-size: 12px;
    font-weight: 700;
    color: var(--primary);
    min-width: 40px;
    flex-shrink: 0; /* 数值标签不被压缩，防止溢出换行 */
    text-align: right;
    font-variant-numeric: tabular-nums;
}

/* 色块选择 */
.swatch-row {
    display: flex;
    gap: 8px;
    align-items: center;
}
.swatch {
    width: 30px; height: 30px;
    border-radius: 8px;
    border: 2px solid var(--border);
    cursor: pointer;
    transition: var(--transition);
    padding: 0;
}
.swatch.active {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(26, 110, 255, 0.2);
    transform: scale(1.08);
}

/* 生成按钮 */
.btn-generate {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 20px;
    background: var(--primary-gradient);
    color: white;
    border: none;
    border-radius: 12px;
    font-family: inherit;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 8px 24px rgba(26, 110, 255, 0.35);
    margin-top: 8px;
}
.btn-generate:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(26, 110, 255, 0.45);
}
.btn-generate:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    box-shadow: none;
}
.btn-ghost {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    background: white;
    color: var(--text-secondary);
    border: 1.5px solid var(--border);
    border-radius: 12px;
    font-family: inherit;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 10px;
}
.btn-ghost:hover {
    border-color: var(--danger);
    color: var(--danger);
    background: var(--danger-light);
}

/* 预计体积提示 */
.size-preview {
    margin-top: 14px;
    padding: 12px 14px;
    background: var(--bg-warm);
    border: 1px dashed var(--border);
    border-radius: var(--radius-sm);
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.7;
}
.size-preview strong { color: var(--primary); }

/* ---------- 右侧图片区 ---------- */
.dropzone {
    border: 2px dashed rgba(26, 110, 255, 0.35);
    border-radius: var(--radius);
    background: linear-gradient(180deg, #f8fbff 0%, #ffffff 100%);
    padding: 44px 24px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: 20px;
}
.dropzone:hover,
.dropzone.dragover {
    border-color: var(--primary);
    background: var(--primary-light);
    box-shadow: var(--shadow);
}
.dropzone .dz-icon {
    width: 64px; height: 64px;
    background: var(--primary-gradient);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    box-shadow: 0 8px 24px rgba(26, 110, 255, 0.3);
}
.dropzone .dz-icon svg {
    width: 30px; height: 30px;
    color: white;
}
.dropzone h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 6px;
}
.dropzone p {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 4px;
}
.dropzone .dz-formats {
    font-size: 11px;
    color: var(--text-light);
    opacity: 0.8;
}

/* 队列工具条 */
.queue-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 14px;
}
.queue-bar .queue-count {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
}
.queue-bar .queue-count strong {
    color: var(--primary);
    font-size: 15px;
}
.queue-bar .queue-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}
.mini-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 6px 12px;
    border: 1.5px solid var(--border);
    border-radius: 8px;
    background: white;
    font-family: inherit;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}
.mini-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
}
.mini-btn.danger:hover {
    border-color: var(--danger);
    color: var(--danger);
    background: var(--danger-light);
}
.mini-btn svg { width: 13px; height: 13px; }

/* 图片队列网格 */
.queue-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
}
.img-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    position: relative;
    cursor: grab;
    transition: var(--transition);
}
.img-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
}
.img-card.dragging {
    opacity: 0.4;
    cursor: grabbing;
}
.img-card.drag-over {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(26, 110, 255, 0.3);
}
.img-thumb {
    position: relative;
    width: 100%;
    height: 140px;
    background:
        repeating-conic-gradient(#f1f5f9 0% 25%, #ffffff 0% 50%) 0 0 / 16px 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.img-thumb img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    display: block;
    pointer-events: none;
    transition: transform 0.3s ease;
}
.img-order {
    position: absolute;
    top: 8px; left: 8px;
    width: 24px; height: 24px;
    background: rgba(26, 110, 255, 0.92);
    color: white;
    font-size: 12px;
    font-weight: 700;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(4px);
}
.img-info {
    padding: 10px 12px;
    border-top: 1px solid var(--border);
    background: var(--bg-warm);
}
.img-info .img-name {
    font-size: 12px;
    font-weight: 600;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 2px;
}
.img-info .img-meta {
    font-size: 11px;
    color: var(--text-light);
    font-variant-numeric: tabular-nums;
}
.img-tools {
    display: flex;
    gap: 6px;
    padding: 8px 12px 10px;
    background: var(--bg-warm);
}
.img-tools button {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 6px 0;
    border: 1px solid var(--border);
    border-radius: 7px;
    background: white;
    font-family: inherit;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}
.img-tools button:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
}
.img-tools button.del:hover {
    border-color: var(--danger);
    color: var(--danger);
    background: var(--danger-light);
}
.img-tools button svg { width: 12px; height: 12px; }

/* 空态 */
.queue-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 48px 20px;
    border: 1px dashed var(--border);
    border-radius: var(--radius);
    color: var(--text-light);
    font-size: 13px;
}

/* ---------- 生成中遮罩 ---------- */
.overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: rgba(7, 11, 20, 0.75);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}
.overlay.active {
    opacity: 1;
    visibility: visible;
}
.overlay-box {
    background: white;
    border-radius: var(--radius);
    padding: 36px 40px;
    text-align: center;
    max-width: 360px;
    width: 100%;
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.3);
}
.overlay-box .spin {
    width: 48px; height: 48px;
    border: 4px solid var(--primary-light);
    border-top-color: var(--primary);
    border-radius: 50%;
    margin: 0 auto 18px;
    animation: pdf-spin 0.9s linear infinite;
}
@keyframes pdf-spin {
    to { transform: rotate(360deg); }
}
.overlay-box h3 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 8px;
}
.overlay-box p {
    font-size: 13px;
    color: var(--text-secondary);
}
.progress-track {
    height: 8px;
    background: var(--bg-warm);
    border-radius: 100px;
    margin-top: 16px;
    overflow: hidden;
}
.progress-fill {
    height: 100%;
    width: 0%;
    background: var(--primary-gradient);
    border-radius: 100px;
    transition: width 0.25s ease;
}

/* ---------- Toast 提示 ---------- */
.toast {
    position: fixed;
    left: 50%;
    bottom: 32px;
    transform: translateX(-50%) translateY(80px);
    background: var(--text);
    color: white;
    font-size: 13px;
    font-weight: 600;
    padding: 12px 22px;
    border-radius: 100px;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
    z-index: 10000;
    opacity: 0;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
    max-width: calc(100vw - 40px);
    text-align: center;
}
.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}
.toast.error { background: var(--danger); }
.toast.success { background: var(--success); }

/* ---------- 功能亮点区 ---------- */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-top: 40px;
}
.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px 20px;
    transition: var(--transition);
}
.feature-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
    border-color: rgba(26, 110, 255, 0.2);
}
.feature-card .f-icon {
    width: 42px; height: 42px;
    background: var(--primary-light);
    border-radius: 11px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
}
.feature-card .f-icon svg {
    width: 20px; height: 20px;
    color: var(--primary);
}
.feature-card h4 {
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 5px;
}
.feature-card p {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0;
}

/* ---------- FAQ ---------- */
.faq-list { margin-top: 32px; }
.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
    overflow: hidden;
}
.faq-q {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 16px 20px;
    background: none;
    border: none;
    font-family: inherit;
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    text-align: left;
    transition: var(--transition);
}
.faq-q:hover { color: var(--primary); }
.faq-q .faq-arrow {
    width: 22px; height: 22px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    transition: transform 0.3s ease;
}
.faq-item.open .faq-q .faq-arrow { transform: rotate(180deg); }
.faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
}
.faq-a p {
    padding: 0 20px 16px;
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin: 0;
}

/* ============================================================
   响应式 · 与官网 drill.html 完全一致的断点规则
   ============================================================ */
@media (max-width: 1024px) {
    .tool-layout { grid-template-columns: 1fr; }
    .panel-sticky { position: static; }
    .queue-grid { grid-template-columns: repeat(3, 1fr); }
    .feature-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    /* —— 顶部导航汉堡菜单（照抄官网规则） —— */
    .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0; right: 0;
        background: white;
        flex-direction: column;
        padding: 16px 24px;
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
        gap: 4px;
        border-bottom: 1px solid var(--border);
        z-index: 999;
    }
    .nav-links.active { display: flex; }
    .mobile-toggle { display: flex; }

    /* —— 页脚单列 —— */
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }

    /* —— 工具区 —— */
    .section { padding: 48px 0; }
    .page-header { padding: 110px 0 40px; }
    .local-tip { flex-direction: column; gap: 12px; padding: 18px; }
    .dropzone { padding: 32px 16px; }
    .queue-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .img-thumb { height: 110px; }
    .queue-bar { flex-direction: column; align-items: stretch; }
    .queue-bar .queue-actions { justify-content: stretch; }
    .queue-bar .queue-actions .mini-btn { flex: 1; justify-content: center; }
    .feature-grid { grid-template-columns: 1fr; }
    .setting-row-2 { grid-template-columns: 1fr; }
    .overlay-box { padding: 28px 22px; }
}

@media (max-width: 480px) {
    .queue-grid { grid-template-columns: 1fr 1fr; }
    .img-thumb { height: 90px; }
    .chip { padding: 6px 11px; font-size: 11px; }
    .dropzone h3 { font-size: 15px; }
}