/* ========================================
   丁现仁技术博客 - 样式文件
  
   ======================================== */

/* 全局变量定义 */
:root {
    --ding-bg-dark: #0a0a0a;
    --ding-bg-light: #111111;
    --ding-card-bg: #1a1a1a;
    --ding-primary: #00d4ff;
    --ding-secondary: #39ff14;
    --ding-text-primary: #ffffff;
    --ding-text-secondary: #a0a0a0;
    --ding-border: #333333;
    --ding-font-mono: 'Courier New', Courier, monospace;
    --ding-font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--ding-font-sans);
    background-color: var(--ding-bg-dark);
    color: var(--ding-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* 容器 */
.ding_container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ========================================
   导航栏
   ======================================== */
.ding_navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(17, 17, 17, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--ding-border);
}

.ding_nav_container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.ding_logo {
    font-family: var(--ding-font-mono);
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--ding-text-primary);
    text-decoration: none;
    letter-spacing: 2px;
}

.ding_logo_dot {
    color: var(--ding-primary);
}

.ding_nav_menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.ding_nav_link {
    color: var(--ding-text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.3s ease;
    position: relative;
}

.ding_nav_link:hover,
.ding_nav_link.active {
    color: var(--ding-primary);
}

.ding_nav_link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--ding-primary);
    transition: width 0.3s ease;
}

.ding_nav_link:hover::after,
.ding_nav_link.active::after {
    width: 100%;
}

.ding_menu_toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--ding-text-primary);
}

/* ========================================
   Hero 区域
   ======================================== */
.ding_hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 80px;
    background: linear-gradient(135deg, var(--ding-bg-dark) 0%, var(--ding-bg-light) 100%);
    position: relative;
    overflow: hidden;
}

.ding_hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(57, 255, 20, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.ding_hero_content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.ding_hero_greeting {
    font-family: var(--ding-font-mono);
    color: var(--ding-secondary);
    font-size: 1.2rem;
    margin-bottom: 1rem;
    animation: ding_fadeIn 1s ease;
}

.ding_hero_name {
    font-size: 4rem;
    font-weight: bold;
    background: linear-gradient(135deg, var(--ding-primary), var(--ding-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    animation: ding_fadeIn 1s ease 0.2s both;
}

.ding_hero_title {
    font-size: 1.5rem;
    color: var(--ding-text-secondary);
    margin-bottom: 2rem;
    animation: ding_fadeIn 1s ease 0.4s both;
}

.ding_typewriter_box {
    font-family: var(--ding-font-mono);
    font-size: 1.2rem;
    color: var(--ding-primary);
    min-height: 2rem;
    margin-bottom: 3rem;
    animation: ding_fadeIn 1s ease 0.6s both;
}

.ding_cursor {
    animation: ding_blink 1s infinite;
}

.ding_hero_cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: ding_fadeIn 1s ease 0.8s both;
}

/* ========================================
   按钮样式
   ======================================== */
.ding_btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
}

.ding_btn_primary {
    background-color: var(--ding-primary);
    color: var(--ding-bg-dark);
    border-color: var(--ding-primary);
}

.ding_btn_primary:hover {
    background-color: transparent;
    color: var(--ding-primary);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
}

.ding_btn_secondary {
    background-color: transparent;
    color: var(--ding-primary);
    border-color: var(--ding-primary);
}

.ding_btn_secondary:hover {
    background-color: var(--ding-primary);
    color: var(--ding-bg-dark);
}

.ding_btn_full {
    width: 100%;
}

/* ========================================
   通用区块样式
   ======================================== */
.ding_section {
    padding: 5rem 0;
}

.ding_section_alt {
    background-color: var(--ding-bg-light);
}

.ding_section_title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--ding-text-primary);
}

.ding_highlight {
    color: var(--ding-primary);
}

/* ========================================
   文章卡片
   ======================================== */
.ding_blog_grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.ding_article_card {
    background-color: var(--ding-card-bg);
    border: 1px solid var(--ding-border);
    border-radius: 10px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.ding_article_card:hover {
    transform: translateY(-5px);
    border-color: var(--ding-primary);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.2);
}

.ding_article_date {
    font-family: var(--ding-font-mono);
    color: var(--ding-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.ding_article_title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--ding-text-primary);
}

.ding_article_summary {
    color: var(--ding-text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.ding_article_link {
    color: var(--ding-primary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.ding_article_link:hover {
    color: var(--ding-secondary);
}

.ding_article_link i {
    margin-left: 0.5rem;
    transition: transform 0.3s ease;
}

.ding_article_link:hover i {
    transform: translateX(5px);
}

/* ========================================
   案例卡片
   ======================================== */
.ding_case_grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.ding_case_card {
    background-color: var(--ding-card-bg);
    border: 1px solid var(--ding-border);
    border-radius: 10px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.ding_case_card:hover {
    transform: translateY(-5px);
    border-color: var(--ding-secondary);
    box-shadow: 0 10px 30px rgba(57, 255, 20, 0.2);
}

.ding_case_icon {
    font-size: 3rem;
    color: var(--ding-primary);
    margin-bottom: 1.5rem;
}

.ding_case_title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--ding-text-primary);
}

.ding_case_tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.ding_tag {
    background-color: rgba(0, 212, 255, 0.1);
    color: var(--ding-primary);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-family: var(--ding-font-mono);
    border: 1px solid var(--ding-primary);
}

.ding_case_description {
    color: var(--ding-text-secondary);
    line-height: 1.8;
}

/* ========================================
   关于我区域
   ======================================== */
.ding_about_content {
    max-width: 900px;
    margin: 0 auto;
}

.ding_about_text {
    color: var(--ding-text-secondary);
    margin-bottom: 1.5rem;
    line-height: 2;
    font-size: 1.1rem;
}

.ding_tech_stack {
    margin: 3rem 0;
}

.ding_stack_title {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--ding-text-primary);
}

.ding_stack_tags {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.ding_timeline {
    margin-top: 3rem;
}

.ding_timeline_title {
    font-size: 1.8rem;
    margin-bottom: 2rem;
    color: var(--ding-text-primary);
}

.ding_timeline_item {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
    padding-left: 2rem;
    border-left: 2px solid var(--ding-border);
    position: relative;
}

.ding_timeline_item::before {
    content: '';
    position: absolute;
    left: -6px;
    top: 0;
    width: 10px;
    height: 10px;
    background-color: var(--ding-primary);
    border-radius: 50%;
}

.ding_timeline_year {
    font-family: var(--ding-font-mono);
    color: var(--ding-secondary);
    min-width: 120px;
    font-weight: bold;
}

.ding_timeline_content h4 {
    color: var(--ding-text-primary);
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.ding_timeline_content p {
    color: var(--ding-text-secondary);
}

/* ========================================
   联系区域
   ======================================== */
.ding_contact_content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    max-width: 1000px;
    margin: 0 auto;
}

.ding_contact_info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.ding_contact_item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.ding_contact_icon {
    font-size: 1.5rem;
    color: var(--ding-primary);
    margin-top: 0.2rem;
}

.ding_contact_detail h4 {
    color: var(--ding-text-primary);
    margin-bottom: 0.5rem;
}

.ding_contact_detail p {
    color: var(--ding-text-secondary);
}

.ding_contact_form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.ding_form_group {
    width: 100%;
}

.ding_form_input,
.ding_form_textarea {
    width: 100%;
    padding: 1rem;
    background-color: var(--ding-card-bg);
    border: 1px solid var(--ding-border);
    border-radius: 5px;
    color: var(--ding-text-primary);
    font-family: var(--ding-font-sans);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.ding_form_input:focus,
.ding_form_textarea:focus {
    outline: none;
    border-color: var(--ding-primary);
    box-shadow: 0 0 10px rgba(0, 212, 255, 0.3);
}

.ding_form_textarea {
    resize: vertical;
    min-height: 120px;
}

/* ========================================
   页脚
   ======================================== */
.ding_footer {
    background-color: var(--ding-bg-light);
    border-top: 1px solid var(--ding-border);
    padding: 2rem 0;
    text-align: center;
}

.ding_copyright {
    color: var(--ding-text-secondary);
    font-size: 0.9rem;
}

/* ========================================
   动画
   ======================================== */
@keyframes ding_fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes ding_blink {
    0%, 50% {
        opacity: 1;
    }
    51%, 100% {
        opacity: 0;
    }
}

/* ========================================
   响应式设计
   ======================================== */

/* 平板端 */
@media (max-width: 992px) {
    .ding_hero_name {
        font-size: 3rem;
    }

    .ding_hero_title {
        font-size: 1.2rem;
    }

    .ding_contact_content {
        grid-template-columns: 1fr;
    }
}

/* 移动端 */
@media (max-width: 768px) {
    .ding_menu_toggle {
        display: block;
    }

    .ding_nav_menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: var(--ding-bg-light);
        flex-direction: column;
        align-items: center;
        justify-content: flex-start;
        padding-top: 3rem;
        gap: 2rem;
        transition: left 0.3s ease;
    }

    .ding_nav_menu.active {
        left: 0;
    }

    .ding_nav_link {
        font-size: 1.2rem;
    }

    .ding_hero_name {
        font-size: 2.5rem;
    }

    .ding_hero_title {
        font-size: 1rem;
    }

    .ding_section_title {
        font-size: 2rem;
    }

    .ding_blog_grid,
    .ding_case_grid {
        grid-template-columns: 1fr;
    }

    .ding_timeline_item {
        flex-direction: column;
        gap: 0.5rem;
    }

    .ding_timeline_year {
        min-width: auto;
    }
}

/* 小屏幕手机 */
@media (max-width: 480px) {
    .ding_hero_name {
        font-size: 2rem;
    }

    .ding_hero_cta {
        flex-direction: column;
        width: 100%;
    }

    .ding_btn {
        width: 100%;
        text-align: center;
    }

    .ding_section {
        padding: 3rem 0;
    }

    .ding_section_title {
        font-size: 1.8rem;
    }
}