/* 中文工具通用样式 */
:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --text-color: #1f2937;
    --text-secondary: #6b7280;
    --bg-color: #f9fafb;
    --card-bg: #ffffff;
    --secondary-bg: #f3f4f6;
    --border-color: #e5e7eb;
    --hover-bg: #f3f4f6;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 1.5rem 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

h1 {
    font-size: 1.8rem;
}

.back-btn {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.back-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

main {
    flex: 1;
    max-width: 1200px;
    width: 100%;
    margin: 4rem auto 2rem;
    /* 增加顶部间距 */
    padding: 0 20px;
}

.tool-container {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.intro-text {
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 0.95rem;
    background: var(--secondary-bg);
    padding: 15px;
    border-radius: 8px;
}

.input-group {
    margin-bottom: 1.5rem;
}

.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-color);
}

.url-input,
textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
    font-family: inherit;
}

.url-input:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

textarea {
    resize: vertical;
    min-height: 120px;
}

.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

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

.btn-primary:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-secondary {
    background: var(--secondary-bg);
    color: var(--text-color);
}

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

.result-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    margin-top: 1.5rem;
}

.tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.875rem;
    margin: 0.25rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.tag:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

footer {
    text-align: center;
    padding: 2rem 0;
    color: var(--text-secondary);
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    margin-top: 2rem;
}

.love {
    color: #ef4444;
}

@media (max-width: 768px) {
    h1 {
        font-size: 1.5rem;
    }

    .header-content {
        flex-direction: column;
        gap: 1rem;
    }

    .tool-container {
        padding: 1rem;
    }
}