/* ========== 手绘纸张 · 共享基调 ========== */
:root {
    --paper-bg: #F9F6F0;
    --paper-dark: #EFE8DC;
    --ink-color: #3E3A35;
    --accent-color: #C46B5E;      /* 干枯玫瑰 */
    --accent-soft: #D9A8A0;
    --border-light: #E6DFD3;
    --shadow-paper: 0 4px 12px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.02);
    --font-handwrite: 'Caveat', 'KaiTi', cursive;
    --font-serif: 'Lora', 'Times New Roman', serif;
    --font-sans: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}

body {
    background-color: var(--paper-bg);
    color: var(--ink-color);
    font-family: var(--font-sans);
    margin: 0;
    line-height: 1.5;
    /* 极淡噪点纹理 */
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
}

h1, h2, h3 {
    font-family: var(--font-handwrite);
    font-weight: 500;
    letter-spacing: -0.01em;
    margin: 0 0 0.5em;
}

button {
    font-family: inherit;
    transition: all 0.15s;
    cursor: pointer;
}

/* 手绘下划线输入框 */
input, textarea, select {
    background: transparent;
    border: none;
    border-bottom: 2px solid var(--border-light);
    border-radius: 0;
    padding: 12px 4px;
    font-size: 16px;
    color: var(--ink-color);
    width: 100%;
    box-sizing: border-box;
}
input:focus, textarea:focus, select:focus {
    outline: none;
    border-bottom-color: var(--accent-color);
}

/* 手绘复选框 */
.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    padding: 8px 0;
    border-bottom: 1px dashed var(--border-light);
}
.checkbox-group input[type="checkbox"] {
    appearance: none;
    width: 22px;
    height: 22px;
    border: 2px solid var(--border-light);
    border-radius: 4px;
    background: var(--paper-bg);
    margin: 0;
    flex-shrink: 0;
    position: relative;
}
.checkbox-group input[type="checkbox"]:checked {
    border-color: var(--accent-color);
    background: var(--accent-color);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='white'%3E%3Cpath d='M16.7 5.3L8 14 3.3 9.3l1.4-1.4L8 11.2l7.3-7.3z'/%3E%3C/svg%3E");
    background-size: 14px;
    background-position: center;
    background-repeat: no-repeat;
}

/* 进度条 */
.progress-bar {
    height: 4px;
    background: var(--border-light);
    border-radius: 2px;
    overflow: hidden;
}
.progress-fill {
    height: 100%;
    background: var(--accent-color);
    border-radius: 2px;
    transition: width 0.2s;
}

/* 手绘徽章 */
.badge {
    background: var(--accent-soft);
    color: white;
    padding: 2px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
}