/* 灵感印 - 全局样式 */

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #64748b;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --dark: #1e293b;
    --gray: #94a3b8;
    --light: #f8fafc;
    --border: #e2e8f0;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --radius: 12px;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", monospace;
}

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

body {
    font-family: var(--font-sans);
    background: #f1f5f9;
    color: var(--dark);
    line-height: 1.6;
    padding: 20px 0 40px;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部 */
.header {
    text-align: center;
    margin-bottom: 32px;
}

.logo {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.badge {
    font-size: 0.8rem;
    background: var(--success);
    color: white;
    padding: 4px 10px;
    border-radius: 20px;
    vertical-align: middle;
    margin-left: 10px;
}

.tagline {
    font-size: 1.1rem;
    color: var(--secondary);
}

/* 功能卡片区 */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.feature-card {
    background: white;
    padding: 24px 20px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    text-align: center;
    transition: transform 0.2s;
}

.feature-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
}

.feature-card h3 {
    font-size: 1.2rem;
    margin-bottom: 8px;
    color: var(--dark);
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--secondary);
}

.feature-card strong {
    color: var(--primary-dark);
}

/* 提交区域 */
.submit-section, .query-section, .stats, .query-form-section, .query-result, .action-group, .next-steps, .verify-guide {
    background: white;
    padding: 28px 30px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-bottom: 24px;
}

.submit-section h2, .query-section h2 {
    margin-bottom: 20px;
    color: var(--dark);
}

.form-group {
    margin-bottom: 20px;
}

textarea {
    width: 100%;
    min-height: 200px;
    padding: 16px;
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    resize: vertical;
    transition: border-color 0.2s;
}

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

.char-counter {
    text-align: right;
    font-size: 0.85rem;
    color: var(--gray);
    margin-top: 6px;
}

.consent {
    font-size: 0.9rem;
    color: var(--secondary);
}

.consent input {
    margin-right: 8px;
}

.form-actions {
    text-align: center;
}

.btn {
    display: inline-block;
    padding: 12px 28px;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: 40px;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
    background: white;
    color: var(--dark);
    border: 1px solid var(--border);
    margin: 0 5px 10px;
}

.btn-primary {
    background: var(--primary);
    color: white;
    border: none;
    box-shadow: 0 4px 6px -2px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: scale(1.02);
}

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

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

.btn-outline {
    background: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
}

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

.hint {
    font-size: 0.9rem;
    color: var(--gray);
    text-align: center;
    margin-top: 16px;
}

/* 查询表单 */
.query-form {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.query-form input {
    flex: 1;
    padding: 14px 18px;
    font-size: 1rem;
    border: 2px solid var(--border);
    border-radius: 40px;
    font-family: var(--font-mono);
}

.query-form input:focus {
    outline: none;
    border-color: var(--primary);
}

/* 统计数据 */
.stats {
    display: flex;
    justify-content: space-around;
    text-align: center;
}

.stat-num {
    display: block;
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    color: var(--secondary);
    font-size: 0.9rem;
}

/* 证书卡片 */
.cert-card {
    background: var(--light);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 20px;
}

.cert-field {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    padding: 12px 0;
    border-bottom: 1px dashed var(--border);
}

.cert-field:last-child {
    border-bottom: none;
}

.cert-label {
    width: 140px;
    font-weight: 600;
    color: var(--secondary);
    flex-shrink: 0;
}

.cert-value {
    flex: 1;
    word-break: break-word;
}

.mono {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    background: #eef2ff;
    padding: 4px 8px;
    border-radius: 6px;
}

.hash-value {
    font-size: 0.8rem;
}

.cert-preview {
    background: white;
    padding: 12px 16px;
    border-radius: 8px;
    border-left: 4px solid var(--primary);
    font-style: italic;
}

.copy-btn {
    margin-left: 10px;
    padding: 4px 12px;
    font-size: 0.8rem;
    background: white;
    border: 1px solid var(--border);
    border-radius: 20px;
    cursor: pointer;
    transition: 0.1s;
}

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

.download-link {
    margin-left: 15px;
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

/* 结果页成功图标 */
.success-icon {
    font-size: 4rem;
    margin-bottom: 10px;
}

/* 错误消息 */
.error-message {
    background: #fee2e2;
    border: 1px solid #fecaca;
    color: #b91c1c;
    padding: 16px 20px;
    border-radius: var(--radius);
}

/* 页脚 */
.footer {
    text-align: center;
    margin-top: 40px;
    padding-top: 20px;
    color: var(--gray);
    font-size: 0.9rem;
    border-top: 1px solid var(--border);
}

.footer a {
    color: var(--secondary);
    text-decoration: none;
}

.footer a:hover {
    color: var(--primary);
}

/* 响应式 */
@media (max-width: 600px) {
    .logo {
        font-size: 1.8rem;
    }
    .features {
        grid-template-columns: 1fr;
    }
    .cert-field {
        flex-direction: column;
    }
    .cert-label {
        width: 100%;
        margin-bottom: 6px;
    }
    .copy-btn, .download-link {
        margin-left: 0;
        margin-top: 8px;
    }
    .query-form {
        flex-direction: column;
    }
    .btn {
        width: 100%;
        margin: 5px 0;
    }
}

/* 打印样式 */
@media print {
    body { background: white; }
    .btn, .action-group, .query-form, .features, .next-steps, .footer, .copy-btn, .download-link { display: none; }
    .cert-card { box-shadow: none; border: 1px solid #ccc; }
}
/* 文字存证说明样式 */
.info-tip {
    background: #f0f9ff;
    border-left: 4px solid #6366f1;
    padding: 12px 16px;
    border-radius: 8px;
    margin: 20px 0 10px;
    font-size: 0.95rem;
    color: #1e293b;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}
.info-tip .tip-icon {
    font-size: 1.3rem;
}
.why-text-only {
    margin: 10px 0 20px;
    background: #f8fafc;
    border-radius: 8px;
    padding: 12px 16px;
    border: 1px solid #e2e8f0;
}
.why-text-only summary {
    font-weight: 600;
    cursor: pointer;
    color: #334155;
}
.why-text-only .details-content {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px dashed #cbd5e1;
    color: #475569;
    font-size: 0.9rem;
    line-height: 1.7;
}
.why-text-only .details-content p {
    margin-bottom: 10px;
}
/* 证书页面辅助样式（与全局兼容） */
.btn-outline {
    background: transparent;
    border: 1px solid #6366f1;
    color: #6366f1;
}
.btn-outline:hover {
    background: #6366f1;
    color: white;
}
/* 永恒之墙广告卡片 */
.ad-card {
    background: #f8fafc;
    border: 2px dashed #cbd5e1;
    border-radius: 16px;
    padding: 15px;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.ad-label {
    text-transform: uppercase;
    font-size: 0.7rem;
    color: #94a3b8;
    letter-spacing: 2px;
    margin-bottom: 8px;
}

/* 点赞按钮 */
.card-vote {
    display: flex;
    gap: 15px;
    margin-top: 15px;
    padding-top: 12px;
    border-top: 1px solid #e2e8f0;
}
.vote-btn {
    background: none;
    border: 1px solid #e2e8f0;
    border-radius: 30px;
    padding: 6px 16px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s;
    color: #64748b;
}
.vote-btn:hover {
    background: #f1f5f9;
}
.vote-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}
.upvote:hover { border-color: #10b981; color: #10b981; }
.downvote:hover { border-color: #ef4444; color: #ef4444; }