/* ===== 全局样式 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #4a90d9;
    --primary-light: #e8f1fb;
    --primary-lighter: #f4f8fd;
    --text: #2c3e50;
    --text-light: #7f8c9b;
    --border: #c5d8ec;
    --white: #ffffff;
    --hover: #3a7bc8;
    --success-bg: #d4edda;
    --success-text: #155724;
    --success-border: #c3e6cb;
    --error-bg: #fdf0ef;
    --error-text: #d9534f;
    --error-border: #f5c6cb;
    --warning-bg: #fff3cd;
    --warning-text: #856404;
    --warning-border: #ffeeba;
}

body {
    font-family: "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
    background-color: var(--primary-lighter);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 20px;
}

/* ===== 头部 ===== */
header {
    text-align: center;
    padding: 30px 0 20px;
}

header h1 {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 8px;
}

header .subtitle {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* ===== 搜索框 ===== */
.search-box {
    position: relative;
    max-width: 520px;
    margin: 18px auto 0;
    text-align: left;
}

.search-input {
    width: 100%;
    padding: 12px 18px;
    border: 2px solid var(--border);
    border-radius: 24px;
    font-size: 1rem;
    color: var(--text);
    background: var(--white);
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.search-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.search-input::placeholder {
    color: var(--text-light);
    opacity: 0.8;
}

.search-dropdown {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    right: 0;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 10px;
    box-shadow: 0 6px 20px rgba(44, 62, 80, 0.15);
    max-height: 360px;
    overflow-y: auto;
    z-index: 100;
    display: none;
}

.search-dropdown.open {
    display: block;
}

.search-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    cursor: pointer;
    border-bottom: 1px solid var(--primary-lighter);
}

.search-item:last-child {
    border-bottom: none;
}

.search-item:hover,
.search-item.active {
    background: var(--primary-light);
}

.search-item .si-title {
    font-size: 0.95rem;
    color: var(--text);
    font-weight: 600;
    flex: 0 0 auto;
}

.search-item .si-desc {
    font-size: 0.8rem;
    color: var(--text-light);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1 1 auto;
}

.search-item .si-tab {
    flex: 0 0 auto;
    font-size: 0.72rem;
    color: var(--primary);
    background: var(--primary-light);
    border-radius: 10px;
    padding: 2px 8px;
}

.search-empty {
    padding: 14px;
    text-align: center;
    color: var(--text-light);
    font-size: 0.9rem;
}

.search-hint {
    padding: 8px 14px;
    font-size: 0.75rem;
    color: var(--text-light);
    background: var(--primary-lighter);
    border-bottom: 1px solid var(--primary-light);
}

/* 卡片高亮（搜索结果定位） */
.card.flash {
    animation: cardFlash 1.6s ease;
    border-color: var(--primary);
}

@keyframes cardFlash {
    0% { background: var(--primary-light); box-shadow: 0 0 0 3px var(--primary-light); }
    100% { background: var(--white); box-shadow: none; }
}

/* ===== 分类标签 ===== */
.tabs {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 20px;
}

.tab {
    padding: 10px 20px;
    border: 1px solid var(--border);
    border-radius: 20px;
    background: var(--white);
    color: var(--text-light);
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s;
}

.tab:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.tab.active {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--white);
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
}

/* ===== 卡片 ===== */
.card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
}

.card h2 {
    font-size: 1.1rem;
    color: var(--primary);
    margin-bottom: 8px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--primary-light);
}

.card-desc {
    color: var(--text-light);
    font-size: 0.85rem;
    margin-bottom: 15px;
}

/* ===== 输入区 ===== */
.input-group {
    margin-bottom: 15px;
}

.input-group label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 5px;
}

textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-family: "Consolas", "Courier New", monospace;
    font-size: 0.95rem;
    resize: vertical;
    background: var(--white);
    color: var(--text);
    transition: border-color 0.2s;
}

textarea:focus {
    outline: none;
    border-color: var(--primary);
}

textarea[readonly] {
    background: var(--primary-lighter);
}

select {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.95rem;
    background: var(--white);
    color: var(--text);
    cursor: pointer;
}

select:focus {
    outline: none;
    border-color: var(--primary);
}

input[type="file"] {
    width: 100%;
    padding: 10px;
    border: 1px dashed var(--border);
    border-radius: 6px;
    background: var(--primary-lighter);
    color: var(--text);
    font-size: 0.9rem;
    cursor: pointer;
    transition: border-color 0.2s;
}

input[type="file"]:hover {
    border-color: var(--primary);
}

input[type="range"] {
    width: calc(100% - 60px);
    vertical-align: middle;
    accent-color: var(--primary);
}

.range-value {
    display: inline-block;
    width: 50px;
    text-align: right;
    color: var(--primary);
    font-weight: 600;
    font-size: 0.9rem;
}

/* ===== 按钮 ===== */
.btn-group {
    display: flex;
    gap: 10px;
    margin-top: 10px;
    flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
    padding: 10px 25px;
    border: none;
    border-radius: 6px;
    font-size: 0.95rem;
    cursor: pointer;
    transition: background-color 0.2s;
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
    flex: 1;
}

.btn-primary:hover {
    background: var(--hover);
}

.btn-primary:disabled {
    background: var(--border);
    cursor: not-allowed;
}

.btn-secondary {
    background: var(--primary-light);
    color: var(--primary);
}

.btn-secondary:hover {
    background: var(--border);
}

/* ===== 输出区 ===== */
.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 15px 0 8px;
}

.result-label {
    font-size: 0.9rem;
    color: var(--text-light);
    font-weight: 600;
}

.copy-btn {
    padding: 5px 15px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 0.85rem;
    cursor: pointer;
    transition: background-color 0.2s;
}

.copy-btn:hover {
    background: var(--border);
}

.copy-btn.copied {
    background: var(--success-bg);
    color: var(--success-text);
    border-color: var(--success-border);
}

/* ===== 结果区域 ===== */
.result-area {
    margin-top: 15px;
}

.result-area > .item-size {
    color: var(--text-light);
    font-size: 0.85rem;
    padding: 8px 0;
}

.result-area > img {
    display: block;
    max-width: 100%;
    margin-bottom: 10px;
    border: 1px solid var(--border);
    border-radius: 6px;
}

.result-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    margin-bottom: 10px;
    background: var(--primary-lighter);
    flex-wrap: wrap;
}

.result-item img {
    max-width: 100px;
    max-height: 80px;
    border-radius: 4px;
    border: 1px solid var(--border);
    object-fit: contain;
}

.result-item .item-info {
    flex: 1;
    min-width: 150px;
}

.result-item .item-name {
    font-weight: 600;
    font-size: 0.9rem;
    word-break: break-all;
}

.result-item .item-size {
    color: var(--text-light);
    font-size: 0.8rem;
}

.result-item .download-btn {
    padding: 8px 18px;
    background: var(--success-bg);
    color: var(--success-text);
    border: 1px solid var(--success-border);
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    text-decoration: none;
    transition: background-color 0.2s;
}

.result-item .download-btn:hover {
    background: #c3e6cb;
}

/* ===== 哈希结果 ===== */
.hash-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
    margin-top: 10px;
}

.hash-table th,
.hash-table td {
    padding: 8px 10px;
    border: 1px solid var(--border);
    text-align: left;
    word-break: break-all;
}

.hash-table th {
    background: var(--primary-light);
    color: var(--primary);
    font-weight: 600;
    width: 120px;
    white-space: nowrap;
}

.hash-table td {
    font-family: "Consolas", "Courier New", monospace;
}

/* ===== 引擎状态 ===== */
.engine-status {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: 20px;
    background: var(--warning-bg);
    color: var(--warning-text);
    border: 1px solid var(--warning-border);
    font-size: 0.85rem;
    margin-bottom: 15px;
}

.engine-status.ready {
    background: var(--success-bg);
    color: var(--success-text);
    border-color: var(--success-border);
}

.engine-status.loading {
    background: var(--primary-light);
    color: var(--primary);
    border-color: var(--border);
}

.engine-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: currentColor;
    display: inline-block;
}

/* ===== 进度条 ===== */
.progress-wrap {
    margin-top: 15px;
}

.progress-bar {
    width: 100%;
    height: 12px;
    background: var(--primary-light);
    border-radius: 6px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: var(--primary);
    border-radius: 6px;
    transition: width 0.2s;
}

.progress-text {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-top: 5px;
    text-align: center;
}

/* ===== 文本/数字/日期输入框 ===== */
input[type="text"],
input[type="number"],
input[type="date"],
input[type="password"],
select {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.95rem;
    background: var(--white);
    color: var(--text);
    transition: border-color 0.2s;
}

input[type="text"]:focus,
input[type="number"]:focus,
input[type="date"]:focus,
input[type="password"]:focus,
select:focus {
    outline: none;
    border-color: var(--primary);
}

/* 行内小控件（同一行并排的输入框/下拉框） */
.inline-controls {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.inline-controls input,
.inline-controls select {
    flex: 1;
    min-width: 90px;
}

.inline-controls label {
    white-space: nowrap;
    color: var(--text-light);
    font-size: 0.9rem;
}

/* 结果输出框（只读文本区域） */
.result-box {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg);
    color: var(--text);
    font-size: 0.95rem;
    min-height: 60px;
    max-height: 300px;
    overflow-y: auto;
    white-space: pre-wrap;
    word-break: break-word;
    line-height: 1.6;
    box-sizing: border-box;
}

.result-box.success {
    border-color: #2ecc71;
    background: #f0fff4;
}

.result-box.error {
    border-color: #e74c3c;
    background: #fff5f5;
}

/* 复制按钮行 */
.copy-row {
    display: flex;
    justify-content: flex-end;
    margin-top: 8px;
}

/* ===== Markdown 预览 ===== */
.md-preview {
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 15px;
    background: var(--white);
    min-height: 60px;
    overflow-wrap: break-word;
    line-height: 1.7;
}

.md-preview h1,
.md-preview h2,
.md-preview h3,
.md-preview h4 {
    color: var(--primary);
    margin: 12px 0 8px;
    border-bottom: 1px solid var(--primary-light);
    padding-bottom: 4px;
}

.md-preview h1:first-child,
.md-preview h2:first-child,
.md-preview h3:first-child {
    margin-top: 0;
}

.md-preview p {
    margin: 8px 0;
}

.md-preview ul,
.md-preview ol {
    margin: 8px 0 8px 24px;
}

.md-preview code {
    background: var(--primary-light);
    color: var(--primary);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: "Consolas", "Courier New", monospace;
    font-size: 0.9em;
}

.md-preview pre {
    background: #2c3e50;
    color: #ecf0f1;
    padding: 12px;
    border-radius: 6px;
    overflow-x: auto;
    margin: 10px 0;
}

.md-preview pre code {
    background: transparent;
    color: inherit;
    padding: 0;
}

.md-preview blockquote {
    border-left: 4px solid var(--primary);
    margin: 10px 0;
    padding: 4px 14px;
    color: var(--text-light);
    background: var(--primary-lighter);
}

.md-preview a {
    color: var(--primary);
}

.md-preview table {
    border-collapse: collapse;
    margin: 10px 0;
    width: 100%;
}

.md-preview th,
.md-preview td {
    border: 1px solid var(--border);
    padding: 6px 10px;
    text-align: left;
}

.md-preview th {
    background: var(--primary-light);
    color: var(--primary);
}

.md-preview img {
    max-width: 100%;
}

/* ===== 颜色结果色块 ===== */
.color-swatch {
    display: inline-block;
    width: 40px;
    height: 40px;
    border-radius: 6px;
    border: 1px solid var(--border);
    vertical-align: middle;
    margin-right: 10px;
}

/* ===== 错误提示 ===== */
.error-msg {
    color: var(--error-text);
    background: var(--error-bg);
    border: 1px solid var(--error-border);
    border-radius: 6px;
    padding: 10px 15px;
    margin-bottom: 15px;
    font-size: 0.9rem;
}

.info-msg {
    color: var(--primary);
    background: var(--primary-light);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 10px 15px;
    margin-bottom: 15px;
    font-size: 0.9rem;
}

/* ===== 页脚 ===== */
footer {
    text-align: center;
    color: var(--text-light);
    font-size: 0.8rem;
    padding: 20px 0 10px;
}

/* ===== 响应式 ===== */
@media (max-width: 600px) {
    .container {
        padding: 10px;
    }

    header h1 {
        font-size: 1.4rem;
    }

    .btn-group {
        flex-direction: column;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
        flex: none;
    }

    .tab {
        padding: 8px 12px;
        font-size: 0.85rem;
    }
}