/* ═══════════════════════════════════════════════════════
   向阳学术 · 通用样式层
   全局重置、排版、按钮、表单、布局辅助
   ═══════════════════════════════════════════════════════ */

/* ── 全局重置 ── */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
                 "Helvetica Neue", Arial, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.5;
    padding: 15px;
    padding-bottom: 80px; /* 手机端底部悬浮栏空间 */
}

/* ── Header（由 nav.js 动态生成，id=nav-mount 挂载） ── */
#nav-mount header {
    max-width: 1400px;
    margin: 0 auto 15px auto;
    padding: 12px 0;
    border-bottom: 2px solid var(--primary-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 5px;
}

#nav-mount header h1 {
    font-size: 20px;
    color: var(--primary-color);
    font-weight: 700;
    letter-spacing: 1px;
}

/* ── 按钮系统 ── */
.btn {
    padding: 12px 10px;
    border: 1px solid var(--primary-color);
    background: #fff;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    text-align: center;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn:hover,
.btn:active {
    background: var(--primary-color);
    color: #fff;
}

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

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

.btn-success {
    background: var(--green);
    color: #fff;
    border-color: var(--green);
}

.btn-success:hover {
    background: #2f855a;
}

/* ── 表单通用 ── */
.form-section {
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    padding: 20px;
}

.form-group-title {
    font-size: 15px;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 12px;
    padding-bottom: 5px;
    border-bottom: 1px solid var(--border-color);
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 20px;
}

.form-cell {
    display: flex;
    flex-direction: column;
}

.form-cell.full-width {
    grid-column: span 2;
}

label {
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text-color);
}

input[type="text"],
input[type="number"],
input[type="date"],
select,
textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 0;
    font-size: 14px;
    color: var(--text-color);
    outline: none;
    transition: border-color 0.2s;
    -webkit-appearance: none;
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--accent-color);
}

/* ── 操作按钮区 ── */
.action-buttons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-top: 15px;
}

/* ── 底部 footer ── */
footer {
    text-align: center;
    margin-top: 25px;
    font-size: 12px;
    color: var(--text-muted);
}

/* ── 手机端底部悬浮按钮栏 ── */
.mobile-sticky-bar {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: #ffffff;
    box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.1);
    padding: 12px 15px;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    z-index: 999;
}

/* ── 业务页面主布局（左右分栏） ── */
.main-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

/* ── 响应式 ── */
@media (max-width: 1024px) {
    body {
        padding: 10px;
        padding-bottom: 90px;
    }

    #nav-mount header {
        padding: 8px 0;
        margin-bottom: 10px;
    }

    #nav-mount header h1 {
        font-size: 17px;
        letter-spacing: 0;
    }

    .main-container {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .form-section {
        padding: 15px;
    }

    .form-group-title {
        font-size: 14px;
        margin-bottom: 10px;
    }

    .form-grid {
        grid-template-columns: 1fr;
        gap: 10px;
        margin-bottom: 15px;
    }

    .form-cell.full-width {
        grid-column: span 1;
    }

    label {
        font-size: 12px;
    }

    input[type="text"],
    input[type="number"],
    input[type="date"],
    select,
    textarea {
        padding: 12px 12px;
        font-size: 16px; /* 防 iOS 缩放 */
    }

    .action-buttons {
        display: none; /* 手机端用底部悬浮栏代替 */
    }

    .mobile-sticky-bar {
        display: grid;
    }

    .btn {
        font-size: 13px;
        padding: 14px 10px;
    }

    footer {
        font-size: 11px;
        margin-top: 15px;
    }
}