/* 
 * 工具页面通用样式
 * 与首页保持一致的现代设计风格
 */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg: #f5f7fb;
    --card: #ffffff;
    --text: #111827;
    --sub: #6b7280;
    --line: #e5e7eb;
    --primary: #2563eb;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --hover: #eff6ff;
    --shadow: 0 1px 2px rgba(0,0,0,.04);
    --shadow-hover: 0 10px 30px rgba(37,99,235,.08);
}

body {
    font-family: Inter, "PingFang SC", "Microsoft YaHei", sans-serif;
    background: radial-gradient(circle at top, #dbeafe 0%, transparent 35%), var(--bg);
    color: var(--text);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

/* 返回按钮 */
.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: white;
    border: 1px solid var(--line);
    padding: 10px 20px;
    border-radius: 12px;
    cursor: pointer;
    font-size: 14px;
    color: var(--text);
    text-decoration: none;
    transition: all 0.2s ease;
    margin-bottom: 24px;
}

.back-btn:hover {
    background: var(--hover);
    border-color: var(--primary);
    transform: translateX(-2px);
}

/* 页面头部 */
.header {
    text-align: center;
    margin-bottom: 40px;
    padding: 48px 40px;
    background: rgba(255,255,255,.85);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255,255,255,.7);
    border-radius: 24px;
    box-shadow: var(--shadow);
}

.header h1 {
    font-size: 2.5rem;
    margin-bottom: 12px;
    color: var(--text);
    font-weight: 700;
    letter-spacing: -0.5px;
}

.header p {
    font-size: 1.125rem;
    color: var(--sub);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

/* 主要内容区域 */
.main-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 40px;
}

/* 单列布局 */
.main-content.single-column {
    grid-template-columns: 1fr;
}

/* 工具区块 */
.tool-section {
    background: rgba(255,255,255,.85);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255,255,255,.7);
    border-radius: 20px;
    padding: 28px;
    box-shadow: var(--shadow);
}

.section-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* 表单元素 */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 8px;
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: 12px;
    font-size: 14px;
    line-height: 1.6;
    color: var(--text);
    background: white;
    transition: all 0.2s ease;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    box-sizing: border-box;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,.1);
}

.form-textarea {
    min-height: 320px;
    resize: vertical;
}

/* 按钮 */
.btn {
    padding: 12px 24px;
    border-radius: 12px;
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.btn-primary {
    background: #111827;
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,.15);
}

.btn-secondary {
    background: white;
    color: var(--text);
    border: 1px solid var(--line);
}

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

.btn-success {
    background: white;
    color: var(--text);
    border: 1px solid var(--line);
}

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

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(239,68,68,.3);
}

.btn-group {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* 结果显示区域 */
.result-box {
    background: #f9fafb;
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 16px;
    min-height: 200px;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.875rem;
    color: var(--text);
    white-space: pre-wrap;
    word-break: break-all;
    overflow-x: auto;
}

/* 提示信息 */
.alert {
    padding: 12px 16px;
    border-radius: 12px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
}

.alert-info {
    background: #eff6ff;
    color: #1e40af;
    border: 1px solid #bfdbfe;
}

.alert-success {
    background: #f0fdf4;
    color: #166534;
    border: 1px solid #bbf7d0;
}

.alert-warning {
    background: #fffbeb;
    color: #92400e;
    border: 1px solid #fde68a;
}

.alert-danger {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

/* 页脚 */
.footer {
    text-align: center;
    padding: 32px 20px;
    margin-top: 60px;
    border-top: 1px solid var(--line);
    color: var(--sub);
    font-size: 0.875rem;
}

/* 响应式设计 */
@media (max-width: 968px) {
    .main-content {
        grid-template-columns: 1fr;
    }

    .header {
        padding: 32px 24px;
    }

    .header h1 {
        font-size: 2rem;
    }

    .tool-section {
        padding: 20px;
    }
}

@media (max-width: 640px) {
    body {
        padding: 12px;
    }

    .header h1 {
        font-size: 1.75rem;
    }

    .header p {
        font-size: 1rem;
    }

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

    .btn {
        width: 100%;
        justify-content: center;
    }
}

/* 暗黑模式支持 */
[data-theme="dark"] {
    --bg: #0b0f19;
    --card: #111827;
    --text: #f9fafb;
    --sub: #9ca3af;
    --line: #374151;
    --hover: #1f2937;
    --primary: #3b82f6;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --shadow: 0 1px 2px rgba(0,0,0,.2);
    --shadow-hover: 0 10px 30px rgba(59,130,246,.2);
}

[data-theme="dark"] body {
    background: radial-gradient(circle at top, #1e3a8a 0%, transparent 40%), var(--bg);
}

[data-theme="dark"] .form-input,
[data-theme="dark"] .form-textarea,
[data-theme="dark"] .form-select {
    background: var(--card);
    color: var(--text);
}

[data-theme="dark"] .tool-section {
    background: rgba(17,24,39,.85);
}

[data-theme="dark"] .result-box {
    background: var(--card);
    color: var(--text);
}