/* =============================================
   格致中学游戏开发 - 主样式
   设计风格：毛玻璃 + 深色 + 灵动动画
   ============================================= */

/* ---------- CSS 变量 ---------- */
:root {
    --bg-overlay: rgba(10, 10, 20, 0.55);
    --glass-bg: rgba(20, 20, 35, 0.45);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-hover: rgba(30, 30, 50, 0.6);
    --text-primary: #f0f0f5;
    --text-secondary: rgba(240, 240, 245, 0.65);
    --accent: #ff6b8a;
    --accent-glow: rgba(255, 107, 138, 0.4);
    --accent-soft: rgba(255, 107, 138, 0.15);
    --sidebar-width: 260px;
    --radius: 16px;
    --radius-sm: 10px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* ---------- 基础重置 ---------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    color: var(--text-primary);
    background: #0a0a14;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* ---------- 背景层 ---------- */
.bg-layer {
    position: fixed;
    inset: 0;
    z-index: 0;
    background-image: url('images/bg.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    filter: brightness(0.7) saturate(1.1);
    transition: filter 0.5s ease;
}

.bg-layer::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        rgba(10, 10, 20, 0.5) 0%,
        rgba(10, 10, 20, 0.65) 50%,
        rgba(10, 10, 20, 0.8) 100%
    );
}

/* ---------- 花瓣 Canvas ---------- */
.petal-canvas {
    position: fixed;
    inset: 0;
    z-index: 1;
    pointer-events: none;
}

/* ---------- 点击特效容器 ---------- */
.click-effect-container {
    position: fixed;
    inset: 0;
    z-index: 9999;
    pointer-events: none;
    overflow: hidden;
}

.click-petal {
    position: absolute;
    width: 12px;
    height: 12px;
    pointer-events: none;
    animation: clickPetalFall var(--duration, 1s) ease-out forwards;
}

.click-petal::before {
    content: '';
    display: block;
    width: 100%;
    height: 100%;
    background: var(--petal-color, #ff6b8a);
    border-radius: 50% 0 50% 50%;
    transform: rotate(45deg);
    opacity: 0.9;
}

@keyframes clickPetalFall {
    0% {
        transform: translate(0, 0) rotate(0deg) scale(1);
        opacity: 1;
    }
    100% {
        transform: translate(var(--tx), var(--ty)) rotate(var(--rot)) scale(0);
        opacity: 0;
    }
}

/* ---------- 侧边栏（电脑端） ---------- */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: var(--sidebar-width);
    z-index: 100;
    padding: 24px 16px;
    display: flex;
    flex-direction: column;
    background: rgba(12, 12, 24, 0.55);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-right: 1px solid var(--glass-border);
    transition: transform var(--transition);
}

.sidebar-inner {
    display: flex;
    flex-direction: column;
    height: 100%;
    gap: 24px;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 4px;
}

.brand-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--accent), #c44dff);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    box-shadow: 0 4px 20px var(--accent-glow);
    flex-shrink: 0;
}

.sidebar-brand h2 {
    font-size: 15px;
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: 0.5px;
}

/* 侧边导航 */
.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 400;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.nav-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%) scaleY(0);
    width: 3px;
    height: 60%;
    background: var(--accent);
    border-radius: 0 3px 3px 0;
    transition: transform var(--transition);
}

.nav-item:hover {
    background: var(--glass-hover);
    color: var(--text-primary);
    transform: translateX(4px);
}

.nav-item.active {
    background: var(--accent-soft);
    color: var(--accent);
}

.nav-item.active::before {
    transform: translateY(-50%) scaleY(1);
}

.nav-icon {
    font-size: 16px;
    width: 20px;
    text-align: center;
    flex-shrink: 0;
}

/* 侧边栏联系方式 */
.sidebar-contacts {
    margin-top: auto;
    padding: 16px;
    background: var(--glass-bg);
    border-radius: var(--radius-sm);
    border: 1px solid var(--glass-border);
}

.sidebar-contacts h4 {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.contact-item {
    margin-bottom: 10px;
    font-size: 12px;
    line-height: 1.6;
}

.contact-item:last-child {
    margin-bottom: 0;
}

.contact-label {
    display: block;
    color: var(--accent);
    font-weight: 500;
    font-size: 11px;
    margin-bottom: 2px;
}

.contact-item a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition);
    display: block;
}

.contact-item a:hover {
    color: var(--accent);
}

.contact-value {
    display: block;
    color: var(--text-secondary);
}

/* ---------- 移动端头部 ---------- */
.mobile-header {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 200;
    height: 56px;
    padding: 0 16px;
    align-items: center;
    justify-content: space-between;
    background: rgba(12, 12, 24, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
}

.mobile-brand {
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.hamburger {
    width: 36px;
    height: 36px;
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    padding: 6px;
}

.hamburger span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition);
}

/* ---------- 移动端菜单 ---------- */
.mobile-menu-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 300;
    background: rgba(0, 0, 0, 0.6);
    opacity: 0;
    transition: opacity var(--transition);
}

.mobile-menu-overlay.open {
    opacity: 1;
}

.mobile-menu {
    position: fixed;
    top: 0;
    right: -280px;
    width: 280px;
    height: 100vh;
    height: 100dvh;
    z-index: 400;
    background: rgba(15, 15, 30, 0.92);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-left: 1px solid var(--glass-border);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
}

.mobile-menu.open {
    right: 0;
}

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--glass-border);
}

.mobile-menu-header span {
    font-size: 14px;
    color: var(--text-secondary);
    letter-spacing: 1px;
}

.mobile-menu-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 18px;
    cursor: pointer;
    padding: 4px 8px;
    transition: color var(--transition);
}

.mobile-menu-close:hover {
    color: var(--accent);
}

.mobile-nav-item {
    display: block;
    padding: 14px 16px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 15px;
    transition: all var(--transition);
}

.mobile-nav-item:hover,
.mobile-nav-item.active {
    background: var(--accent-soft);
    color: var(--accent);
}

.mobile-menu-contacts {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--glass-border);
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.mobile-menu-contacts h4 {
    font-size: 12px;
    color: var(--text-secondary);
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.mobile-menu-contacts a {
    color: var(--accent);
    text-decoration: none;
}

/* ---------- 主内容区 ---------- */
.main-content {
    position: relative;
    z-index: 10;
    margin-left: var(--sidebar-width);
    padding: 40px 48px;
    min-height: 100vh;
}

/* ---------- Section ---------- */
.section {
    margin-bottom: 72px;
    opacity: 0;
    transform: translateY(24px);
    animation: sectionFadeIn 0.6s ease forwards;
}

.section:nth-child(1) { animation-delay: 0.1s; }
.section:nth-child(2) { animation-delay: 0.2s; }
.section:nth-child(3) { animation-delay: 0.3s; }
.section:nth-child(4) { animation-delay: 0.4s; }

@keyframes sectionFadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-header {
    margin-bottom: 32px;
}

.section-title {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: 1px;
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--text-primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 300;
}

/* ---------- 游戏卡片网格 ---------- */
.game-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.game-card {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 24px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    cursor: default;
    display: flex;
    flex-direction: column;
}

.game-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0;
    transition: opacity var(--transition);
}

.game-card:hover {
    transform: translateY(-6px) scale(1.01);
    border-color: rgba(255, 107, 138, 0.3);
    box-shadow:
        0 20px 40px rgba(0, 0, 0, 0.3),
        0 0 0 1px rgba(255, 107, 138, 0.1),
        0 0 40px rgba(255, 107, 138, 0.08);
}

.game-card:hover::before {
    opacity: 1;
}

.game-card-number {
    position: absolute;
    top: 16px;
    right: 20px;
    font-size: 12px;
    color: var(--text-secondary);
    opacity: 0.4;
    font-weight: 300;
}

.game-card-title {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
    line-height: 1.4;
}

.game-card-desc {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 18px;
    flex-grow: 1;
}

.game-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 16px;
}

.game-tag {
    font-size: 11px;
    padding: 3px 10px;
    border-radius: 20px;
    background: var(--accent-soft);
    color: var(--accent);
    border: 1px solid rgba(255, 107, 138, 0.15);
}

.game-card-links {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.game-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition);
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.03);
}

.game-link:hover {
    background: var(--accent-soft);
    border-color: rgba(255, 107, 138, 0.3);
    color: var(--accent);
    transform: translateY(-1px);
}

.game-link.download-link {
    background: linear-gradient(135deg, rgba(255, 107, 138, 0.2), rgba(196, 77, 255, 0.15));
    border-color: rgba(255, 107, 138, 0.25);
    color: var(--accent);
}

.game-link.download-link:hover {
    background: linear-gradient(135deg, rgba(255, 107, 138, 0.35), rgba(196, 77, 255, 0.25));
    box-shadow: 0 4px 16px var(--accent-glow);
}

.game-link svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

/* ---------- 占位卡片 ---------- */
.placeholder-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
}

.placeholder-card {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px dashed rgba(255, 255, 255, 0.15);
    border-radius: var(--radius);
    padding: 40px 24px;
    text-align: center;
    transition: all var(--transition);
}

.placeholder-card:hover {
    border-color: rgba(255, 107, 138, 0.3);
    background: var(--glass-hover);
}

.placeholder-icon {
    font-size: 32px;
    margin-bottom: 12px;
    opacity: 0.5;
}

.placeholder-card h3 {
    font-size: 16px;
    font-weight: 500;
    margin-bottom: 6px;
}

.placeholder-card p {
    font-size: 13px;
    color: var(--text-secondary);
}

/* ---------- 关于页面 ---------- */
.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.dev-card {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 32px 24px;
    text-align: center;
    transition: all var(--transition);
}

.dev-card:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 107, 138, 0.2);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
}

.dev-avatar {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), #c44dff);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 700;
    color: #fff;
    margin: 0 auto 16px;
    box-shadow: 0 8px 24px var(--accent-glow);
}

.dev-name {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 4px;
}

.dev-role {
    font-size: 13px;
    color: var(--accent);
    margin-bottom: 12px;
    font-weight: 500;
}

.dev-bio {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 18px;
}

.dev-links {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

.dev-link {
    display: inline-block;
    padding: 6px 16px;
    border-radius: 8px;
    font-size: 12px;
    text-decoration: none;
    color: var(--text-secondary);
    border: 1px solid var(--glass-border);
    transition: all var(--transition);
    background: rgba(255, 255, 255, 0.03);
}

.dev-link:hover {
    color: var(--accent);
    border-color: rgba(255, 107, 138, 0.3);
    background: var(--accent-soft);
}

.qq-link {
    cursor: default;
}

.about-description {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 28px;
}

.about-description h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--accent);
}

.about-description p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.9;
}

/* ---------- 页脚 ---------- */
.footer {
    text-align: center;
    padding: 32px 0;
    font-size: 12px;
    color: var(--text-secondary);
    opacity: 0.5;
}

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

/* 平板 */
@media (max-width: 1024px) {
    .main-content {
        margin-left: 0;
        padding: 80px 24px 40px;
    }

    .sidebar {
        transform: translateX(-100%);
    }

    .mobile-header {
        display: flex;
    }

    .mobile-menu-overlay {
        display: block;
        pointer-events: none;
    }

    .mobile-menu-overlay.open {
        pointer-events: auto;
    }
}

/* 手机 */
@media (max-width: 768px) {
    :root {
        --radius: 14px;
    }

    .main-content {
        padding: 72px 16px 32px;
    }

    .section {
        margin-bottom: 48px;
    }

    .section-title {
        font-size: 22px;
    }

    .section-subtitle {
        font-size: 13px;
    }

    .game-grid {
        grid-template-columns: 1fr;
        gap: 14px;
    }

    .game-card {
        padding: 20px;
    }

    .game-card:hover {
        transform: translateY(-3px);
    }

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

    .dev-card {
        padding: 24px 20px;
    }

    .about-description {
        padding: 20px;
    }

    /* 手机端禁用某些 hover 效果，避免触屏问题 */
    .game-card:hover {
        transform: none;
        box-shadow: none;
    }

    .game-card:active {
        transform: scale(0.98);
        border-color: rgba(255, 107, 138, 0.3);
    }
}

/* 超小屏 */
@media (max-width: 380px) {
    .game-card-links {
        flex-direction: column;
    }

    .game-link {
        justify-content: center;
    }
}

/* 减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}