/* ============================================================
   Index Page Styles - 首页专属样式
   包含 Hero/About/Features/Steps/Characters/Weapons/Modes/Download 区段
   通用样式见 public.css
 
/* ========== 区段通用 ========== */
.zt-section {
    padding: 100px 0;
    position: relative;
}

.zt-bg-sand {
    background: linear-gradient(180deg, var(--zt-darker) 0%, #3d2410 50%, var(--zt-darker) 100%);
}

.zt-bg-pattern {
    background-color: var(--zt-dark);
    background-image: radial-gradient(circle at 20% 30%, rgba(155, 89, 182, 0.1) 0%, transparent 40%),
                      radial-gradient(circle at 80% 70%, rgba(255, 140, 66, 0.08) 0%, transparent 40%);
}

/* ========== 首页导航(覆盖 public_header 样式) ========== */
.zt-navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(26, 15, 8, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 3px solid var(--zt-tan);
    padding: 12px 0;
    /* 防止 UIKit grid 负边距导致横向溢出 */
    overflow: hidden;
}

/* 覆盖 header_padding(原 30px 顶部内边距,导航中改为 0,并约束内容宽度居中) */
.zt-navbar .header_padding {
  
    max-width: 1400px;
    margin: 0 auto;
    box-sizing: border-box;
}

/* 强制导航 uk-grid 不堆叠(覆盖 UIKit uk-grid 的 flex-wrap: wrap)
   原因:public_header 用 uk-grid,UIKit 默认 flex-wrap: wrap,
   当三列总宽超过容器时会换行堆叠,导致导航栏高度变形。
   这里强制 nowrap,并用 JS 移除 uk-grid 属性阻止 UIKit JS 接管。
   选择器不依赖 uk-grid-stack 类(JS 会移除该类)。 */
.zt-navbar .uk-grid {
    display: flex !important;
    flex-wrap: nowrap !important;
    margin-left: 0 !important;
    margin-right: 0 !important;
}

/* 导航三列强制水平不换行,内容紧凑显示 */
.zt-navbar .uk-grid > * {
    padding-left: 0 !important;
    flex: 0 0 auto !important;
    margin-left: 0 !important;
}

/* 导航链接列表不换行,缩小间距适配窄屏 */
.zt-navbar .x-uk-navbar-nav {
    flex-wrap: nowrap !important;
    gap: 20px;
}
.zt-navbar .x-uk-navbar-nav li {
    flex-shrink: 0;
}

/* 导航 Logo 文字缩小(覆盖 uk-padding 默认 15px) */
.zt-navbar .uk-padding {
    padding: 8px 12px !important;
}
.zt-navbar .sp_font {
    font-size: 1.3rem !important;
}

/* 导航链接字体紧凑 */
.zt-navbar .x-uk-navbar-nav a {
    font-size: 0.85rem !important;
    padding: 6px 0 !important;
}

/* 导航 Login 按钮紧凑 */
.zt-navbar .uk-button-secondary {
    padding: 8px 18px !important;
    font-size: 0.85rem !important;
}

/* 窄屏(≤960px)导航进一步紧凑,确保 Login 按钮可见 */
@media (max-width: 960px) {
    .zt-navbar .header_padding {
        padding: 0 12px !important;
    }
    .zt-navbar .x-uk-navbar-nav {
        gap: 8px;
    }
    .zt-navbar .x-uk-navbar-nav a {
        font-size: 0.7rem !important;
        letter-spacing: 0;
    }
    .zt-navbar .sp_font {
        font-size: 1rem !important;
    }
    .zt-navbar .uk-padding {
        padding: 6px 8px !important;
    }
    .zt-navbar .uk-button-secondary {
        padding: 6px 12px !important;
        font-size: 0.75rem !important;
    }
    /* 中间导航链接区域允许收缩,Logo 和 Login 保持固定宽度 */
    .zt-navbar .uk-grid > *:nth-child(1),
    .zt-navbar .uk-grid > *:nth-child(3) {
        flex: 0 0 auto !important;
    }
    .zt-navbar .uk-grid > *:nth-child(2) {
        flex: 1 1 auto !important;
        min-width: 0 !important;
        overflow: hidden !important;
    }
}

/* 导航 Logo 文字颜色 */
.zt-navbar .sp_font {
    color: var(--zt-gold) !important;
    font-family: var(--font-display) !important;
    text-decoration: none;
    transition: color 0.2s;
}

.zt-navbar .sp_font:hover {
    color: var(--zt-gold-light) !important;
}

/* 导航链接 */
.zt-navbar .x-uk-navbar-nav a {
    color: var(--zt-sand);
    font-weight: 700;
    font-size: 0.95rem;
    transition: color 0.2s;
    padding: 8px 0;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.zt-navbar .x-uk-navbar-nav a:hover {
    color: var(--zt-gold);
    text-decoration: none;
}

.zt-navbar .x-uk-navbar-nav a.active {
    color: var(--zt-gold) !important;
    position: relative;
}

.zt-navbar .x-uk-navbar-nav a.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--zt-gold);
    border-radius: 2px;
}

/* 导航登录按钮覆盖 */
.zt-navbar .uk-button-secondary {
    background: linear-gradient(180deg, var(--zt-gold-light) 0%, var(--zt-gold) 100%) !important;
    color: var(--zt-brown-dark) !important;
    font-family: var(--font-display) !important;
    font-weight: 700;
    padding: 10px 24px !important;
    font-size: 0.95rem !important;
    border-radius: 50px !important;
    box-shadow: 0 4px 0 var(--zt-shadow-lg);
    transition: transform 0.2s, box-shadow 0.2s;
}

.zt-navbar .uk-button-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 0 var(--zt-shadow-lg);
    color: var(--zt-brown-dark) !important;
    text-decoration: none;
}

.zt-navbar .uk-icon-button {
    background: linear-gradient(135deg, var(--zt-gold) 0%, var(--zt-orange) 100%) !important;
    color: var(--zt-brown-dark) !important;
    border: 2px solid var(--zt-tan);
}

/* ========== Hero 区 ========== */
.zt-hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 140px 24px 100px;
    background: url('../img/h_bg.jpg') center/cover no-repeat;
}

.zt-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(26,15,8,0.6) 0%, rgba(26,15,8,0.3) 40%, rgba(26,15,8,0.85) 100%);
}

.zt-hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
}

.zt-hero-logo {
    max-width: 120px !important;
    width: 100%;
}

.zt-hero h1 {
    font-size: clamp(2.4rem, 5vw, 4.2rem);
    color: white;
    text-shadow: 4px 4px 0 var(--zt-brown-dark), 0 0 40px var(--zt-purple-dark);
    margin: 0 0 20px 0;
    line-height: 1.15;
}

.zt-hero p {
    font-size: clamp(1.1rem, 2vw, 1.5rem);
    color: var(--zt-sand);
    margin: 0 0 36px 0;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.6);
    line-height: 1.5;
}

.zt-hero-badges {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.zt-hero-badges .zt-btn {
    min-width: 220px;
    padding: 18px 36px;
    font-size: 1.2rem;
}



/* ========== About 区 ========== */
.zt-about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.zt-about-text h2 {
    text-align: left;
    margin: 0 0 20px 0;
}

.zt-about-text p {
    color: var(--zt-sand);
    font-size: 1.1rem;
    margin: 0 0 18px 0;
    line-height: 1.7;
}

.zt-about-features {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 28px;
}

.zt-about-feature {
    display: flex;
    align-items: center;
    gap: 16px;
    font-weight: 700;
    color: var(--zt-gold-light);
}

.zt-about-feature span {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--zt-green);
    color: var(--zt-brown-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.zt-about-visual {
    position: relative;
    text-align: right;
}

.zt-about-visual img {
    border-radius: 32px;
    border: 4px solid var(--zt-tan);
    box-shadow: 0 16px 48px var(--zt-shadow-lg);
    max-width: 500px;
    height: auto;
}

/* ========== Features 区 ========== */
.zt-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
    gap: 28px;
}

.zt-feature-card {
    text-align: center;
    transition: transform 0.2s;
}

.zt-feature-card:hover {
    transform: translateY(-8px);
}

.zt-feature-card .zt-icon-circle {
    margin: 0 auto 20px;
    width: 80px;
    height: 80px;
    font-size: 2.2rem;
}

.zt-feature-card h3 {
    font-size: 1.4rem;
    margin: 0 0 12px 0;
    color: var(--zt-gold);
}

.zt-feature-card p {
    color: var(--zt-sand);
    font-size: 0.98rem;
    line-height: 1.6;
    margin: 0;
}

/* ========== How to Play(步骤) ========== */
.zt-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.zt-step {
    text-align: center;
    position: relative;
}

.zt-step-number {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--zt-purple) 0%, var(--zt-magic) 100%);
    color: white;
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 16px rgba(224, 86, 253, 0.3);
    border: 4px solid var(--zt-cream);
}

.zt-step h3 {
    font-size: 1.3rem;
    margin: 0 0 10px 0;
    color: var(--zt-gold);
}

.zt-step p {
    color: var(--zt-sand);
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0;
}



/* ========== Weapons 区 ========== */
.zt-weapons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.zt-weapon-card {
    text-align: center;
    padding: 24px 16px;
    border-radius: 20px;
    background: linear-gradient(180deg, rgba(93, 58, 26, 0.8) 0%, rgba(61, 36, 16, 0.9) 100%);
    border: 2px solid var(--zt-tan);
    transition: transform 0.2s;
}

.zt-weapon-card:hover {
    transform: scale(1.05);
}

.zt-weapon-icon {
    font-size: 3rem;
    margin-bottom: 12px;
    filter: drop-shadow(0 4px 6px var(--zt-shadow));
}

.zt-weapon-card h4 {
    font-size: 1.05rem;
    color: var(--zt-gold-light);
    margin: 0 0 6px 0;
}

.zt-weapon-card p {
    font-size: 0.8rem;
    color: var(--zt-sand);
    margin: 0;
}

/* ========== Game Modes 区 ========== */
.zt-modes-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.zt-mode-card {
    padding: 36px 28px;
    text-align: center;
}

.zt-mode-card .zt-mode-icon {
    width: 90px;
    height: 90px;
    margin: 0 auto 22px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.6rem;
    background: linear-gradient(135deg, var(--zt-gold) 0%, var(--zt-orange) 100%);
    box-shadow: 0 8px 24px var(--zt-shadow);
}

.zt-mode-card h3 {
    font-size: 1.5rem;
    margin: 0 0 12px 0;
    color: var(--zt-gold);
}

.zt-mode-card p {
    color: var(--zt-sand);
    margin: 0;
    line-height: 1.6;
}

/* ========== 首页响应式 ========== */
@media (max-width: 1024px) {
    .zt-about-grid,
    .zt-modes-grid {
        grid-template-columns: 1fr;
    }
    .zt-steps {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .zt-navbar .x-uk-navbar-nav {
        display: none;
    }
    .zt-steps {
        grid-template-columns: 1fr;
    }
    .zt-hero-badges {
        flex-direction: column;
        align-items: center;
    }
    .zt-hero-badges .zt-btn {
        width: 100%;
        max-width: 280px;
    }
    .zt-section {
        padding: 60px 0;
    }
}