/* ========================================
   自定义响应式样式 & 侧边栏折叠
   ======================================== */

/* ========== 响应式断点适配 ========== */

/* 大屏幕 (>1200px) - 默认 */
@media (min-width: 1200px) {
    .projects-title {
        font-size: 2.8em;
    }

    .section-title {
        font-size: 1.6em;
    }
}

/* 中等屏幕 (992px - 1199px) */
@media (max-width: 1199px) and (min-width: 992px) {
    .projects-title {
        font-size: 2.4em;
    }

    .section-title {
        font-size: 1.5em;
    }
}

/* 平板 (768px - 991px) */
@media (max-width: 991px) and (min-width: 768px) {
    .projects-title {
        font-size: 2.2em;
        margin-bottom: 40px;
    }

    .section-title {
        font-size: 1.4em;
        margin-bottom: 20px;
    }

    .projects-grid {
        gap: 15px;
    }
}

/* 手机 (<768px) */
@media (max-width: 767px) {
    .projects-title {
        font-size: 1.8em;
        margin-bottom: 30px;
        margin-top: 20px;
    }

    .projects-title::after {
        font-size: 0.9em;
    }

    .section-title {
        font-size: 1.3em;
        margin-bottom: 15px;
    }

    .section-title span {
        transform: skewX(5deg);
    }

    .section-title span::before {
        font-size: 0.65em;
    }

    .projects-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .project-card {
        margin-bottom: 15px;
    }

    /* 禁用手机端hover效果 */
    .project-card:hover {
        transform: none;
    }

    .project-card:active {
        transform: scale(0.98);
    }
}

/* ========== 侧边栏折叠（手机端） ========== */

/* 折叠按钮样式 */
.sidebar-toggle-btn {
    display: none;
    width: 100%;
    padding: 12px 15px;
    background: var(--theme-bg-color, #fcfcfe);
    border: 1px solid var(--primary-30, rgba(175, 180, 43, 0.3));
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    color: var(--theme-color, #00283a);
    margin-bottom: 10px;
    transition: all 0.3s ease;
    text-align: center;
}

.sidebar-toggle-btn:hover {
    background: var(--primary-30, rgba(175, 180, 43, 0.3));
}

.sidebar-toggle-btn .toggle-icon {
    margin-left: 8px;
    transition: transform 0.3s ease;
    display: inline-block;
}

.sidebar-toggle-btn.collapsed .toggle-icon {
    transform: rotate(180deg);
}

/* 侧边栏内容区域 */
.sidebar-collapsible-content {
    transition: max-height 0.4s ease, opacity 0.3s ease, padding 0.3s ease;
    overflow: hidden;
}

/* 手机端显示折叠按钮和折叠功能 */
@media (max-width: 767px) {
    .sidebar-toggle-btn {
        display: block;
    }

    .sidebar-collapsible-content {
        max-height: 1000px;
        opacity: 1;
    }

    .sidebar-collapsible-content.collapsed {
        max-height: 0;
        opacity: 0;
        padding-top: 0 !important;
        padding-bottom: 0 !important;
    }

    /* 侧边栏卡片在手机端的优化 */
    .trm-main-card {
        padding: 15px !important;
    }

    .trm-mc-header {
        padding-bottom: 10px;
    }

    .trm-avatar-frame {
        margin-bottom: 10px !important;
    }

    .trm-avatar {
        width: 80px !important;
        height: 80px !important;
    }
}

/* 小屏手机 (<480px) */
@media (max-width: 479px) {
    .projects-title {
        font-size: 1.5em;
        margin-bottom: 25px;
    }

    .section-title {
        font-size: 1.2em;
    }

    .section-title span::before {
        font-size: 0.55em;
        letter-spacing: 1px;
    }
}

/* ========== ABOUT 页面内容下移 ========== */
/* 避免内容与banner背景重叠 */
.trm-publication {
    margin-top: 30px;
}

.trm-publication .trm-card:first-child {
    margin-top: 20px;
}

/* ABOUT页面标题样式优化 */
.trm-publication h2:first-of-type {
    margin-top: 15px;
    padding-top: 10px;
}