/*
Theme Name: AI知学社 - Astra子主题
Theme URI: https://zhixueshe.cn
Description: AI知学社高端科技感定制主题 - 基于Astra
Author: AI知学社
Author URI: https://zhixueshe.cn
Template: astra
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Tags: 教育, AI, 科技, 高端
Text Domain: zhixueshe
*/

/* ============================================================
   AI知学社 - 品牌配色系统
   主色: 深蓝 #0a1628
   辅色: 金色 #D4AF37
   中性: 浅灰 #f5f7fa
   ============================================================ */

:root {
    --zx-primary: #0a1628;
    --zx-primary-light: #1a2d47;
    --zx-primary-dark: #050d1a;
    --zx-accent: #D4AF37;
    --zx-accent-light: #e8c96b;
    --zx-accent-dark: #b8941f;
    --zx-text-primary: #1a1a2e;
    --zx-text-secondary: #4a5568;
    --zx-text-light: #718096;
    --zx-bg-light: #f5f7fa;
    --zx-bg-white: #ffffff;
    --zx-border: #e2e8f0;
    --zx-gradient-primary: linear-gradient(135deg, #0a1628 0%, #1a2d47 100%);
    --zx-gradient-accent: linear-gradient(135deg, #D4AF37 0%, #e8c96b 100%);
    --zx-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --zx-shadow-md: 0 4px 12px rgba(10, 22, 40, 0.1);
    --zx-shadow-lg: 0 10px 40px rgba(10, 22, 40, 0.15);
    --zx-shadow-gold: 0 4px 20px rgba(212, 175, 55, 0.3);
    --zx-radius-sm: 6px;
    --zx-radius-md: 12px;
    --zx-radius-lg: 20px;
    --zx-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---- 全局基础 ---- */
body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
    color: var(--zx-text-primary);
    line-height: 1.7;
    background: var(--zx-bg-white);
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    color: var(--zx-primary);
    letter-spacing: -0.02em;
    line-height: 1.3;
}

h1 { font-size: clamp(2rem, 4vw, 3.2rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.8rem); }

/* ---- 按钮系统 ---- */
.ast-button,
.wp-block-button__link,
.btn-primary,
button, input[type="submit"] {
    background: var(--zx-gradient-primary) !important;
    color: #fff !important;
    border: none !important;
    border-radius: var(--zx-radius-md) !important;
    padding: 14px 32px !important;
    font-weight: 600 !important;
    font-size: 15px !important;
    letter-spacing: 0.5px !important;
    transition: var(--zx-transition) !important;
    position: relative !important;
    overflow: hidden !important;
    box-shadow: var(--zx-shadow-md) !important;
}

.ast-button:hover,
.wp-block-button__link:hover,
.btn-primary:hover,
button:hover, input[type="submit"]:hover {
    transform: translateY(-2px) !important;
    box-shadow: var(--zx-shadow-lg) !important;
}

.btn-gold,
.ast-button.gold-btn {
    background: var(--zx-gradient-accent) !important;
    color: var(--zx-primary) !important;
    box-shadow: var(--zx-shadow-gold) !important;
}

.btn-gold:hover,
.ast-button.gold-btn:hover {
    box-shadow: 0 6px 30px rgba(212, 175, 55, 0.5) !important;
}

.btn-outline {
    background: transparent !important;
    border: 2px solid var(--zx-accent) !important;
    color: var(--zx-accent) !important;
}

.btn-outline:hover {
    background: var(--zx-accent) !important;
    color: #fff !important;
}

/* ---- Header / 导航栏 ---- */
.ast-primary-header-bar,
.site-header,
.ast-header-custom-item-inside {
    background: rgba(10, 22, 40, 0.95) !important;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(212, 175, 55, 0.1);
}

.ast-primary-menu .menu-item > .menu-link,
.main-navigation a {
    color: rgba(255, 255, 255, 0.85) !important;
    font-weight: 500 !important;
    font-size: 15px !important;
    transition: var(--zx-transition) !important;
    position: relative;
}

.ast-primary-menu .menu-item > .menu-link:hover,
.main-navigation a:hover {
    color: var(--zx-accent) !important;
}

.ast-primary-menu .menu-item > .menu-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--zx-accent);
    transition: var(--zx-transition);
    transform: translateX(-50%);
}

.ast-primary-menu .menu-item > .menu-link:hover::after,
.ast-primary-menu .current-menu-item > .menu-link::after {
    width: 80%;
}

.ast-primary-menu .current-menu-item > .menu-link {
    color: var(--zx-accent) !important;
}

/* ---- Logo ---- */
.site-logo-img {
    height: 40px;
    width: auto;
}

.ast-site-identity .site-title {
    font-size: 20px;
    font-weight: 700;
    background: var(--zx-gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ---- Hero / 首屏 ---- */
.hero-section {
    background: var(--zx-gradient-primary);
    position: relative;
    overflow: hidden;
    padding: 100px 0;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(212, 175, 55, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(26, 45, 71, 0.8) 0%, transparent 50%);
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(212, 175, 55, 0.15);
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: 50px;
    color: var(--zx-accent);
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 24px;
}

.hero-title {
    color: #fff;
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-title .accent {
    background: var(--zx-gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    color: rgba(255, 255, 255, 0.7);
    font-size: clamp(1rem, 1.5vw, 1.2rem);
    margin-bottom: 36px;
    max-width: 600px;
}

/* ---- 卡片/课程卡 ---- */
.course-card,
.service-card,
.feature-card {
    background: #fff;
    border-radius: var(--zx-radius-lg);
    overflow: hidden;
    transition: var(--zx-transition);
    box-shadow: var(--zx-shadow-sm);
    border: 1px solid var(--zx-border);
}

.course-card:hover,
.service-card:hover,
.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--zx-shadow-lg);
    border-color: var(--zx-accent);
}

.course-card .card-header {
    background: var(--zx-gradient-primary);
    padding: 40px 30px;
    position: relative;
}

.course-card .card-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--zx-gradient-accent);
}

.course-card .level-badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(212, 175, 55, 0.2);
    color: var(--zx-accent);
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1px;
}

.course-card .card-body {
    padding: 30px;
}

.course-card .card-title {
    color: var(--zx-primary);
    font-size: 1.4rem;
    margin-bottom: 12px;
}

.course-card .card-desc {
    color: var(--zx-text-secondary);
    font-size: 14px;
    margin-bottom: 20px;
}

.course-card .card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 20px;
    border-top: 1px solid var(--zx-border);
}

.course-card .price {
    color: var(--zx-accent);
    font-size: 1.5rem;
    font-weight: 700;
}

/* ---- 优势/特性区块 ---- */
.feature-section {
    padding: 80px 0;
    background: var(--zx-bg-light);
}

.feature-item {
    text-align: center;
    padding: 30px 20px;
    transition: var(--zx-transition);
    border-radius: var(--zx-radius-md);
}

.feature-item:hover {
    background: #fff;
    box-shadow: var(--zx-shadow-md);
    transform: translateY(-4px);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    background: var(--zx-gradient-primary);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--zx-accent);
}

.feature-item h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.feature-item p {
    color: var(--zx-text-secondary);
    font-size: 14px;
}

/* ---- CTA 区块 ---- */
.cta-section {
    background: var(--zx-gradient-primary);
    padding: 80px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center, rgba(212, 175, 55, 0.1) 0%, transparent 70%);
}

.cta-section h2 {
    color: #fff;
    margin-bottom: 16px;
    position: relative;
    z-index: 1;
}

.cta-section p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 30px;
    position: relative;
    z-index: 1;
}

/* ---- Footer / 页脚 ---- */
.site-footer,
.ast-footer-copyright {
    background: var(--zx-primary-dark) !important;
    color: rgba(255, 255, 255, 0.7) !important;
    border-top: 1px solid rgba(212, 175, 55, 0.1) !important;
}

.site-footer a {
    color: rgba(255, 255, 255, 0.7) !important;
    transition: var(--zx-transition);
}

.site-footer a:hover {
    color: var(--zx-accent) !important;
}

.site-footer h3,
.site-footer h4 {
    color: #fff !important;
    font-size: 1.1rem !important;
    margin-bottom: 20px !important;
}

.ast-footer-copyright p {
    color: rgba(255, 255, 255, 0.5) !important;
    font-size: 13px !important;
}

/* ---- 登录页品牌化 ---- */
body.login {
    background: var(--zx-gradient-primary) !important;
    position: relative;
}

body.login::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 20%, rgba(212, 175, 55, 0.1) 0%, transparent 50%);
}

#login h1 a, .login h1 a {
    background-image: none !important;
    background: var(--zx-gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 28px;
    font-weight: 800;
    height: auto !important;
    width: auto !important;
    text-indent: 0 !important;
    padding-bottom: 20px !important;
    content: 'AI知学社' !important;
}

#loginform, #registerform, #lostpasswordform {
    background: rgba(255, 255, 255, 0.98) !important;
    border-radius: var(--zx-radius-lg) !important;
    border: none !important;
    box-shadow: var(--zx-shadow-lg) !important;
    padding: 30px !important;
}

#loginform .button-primary,
#registerform .button-primary {
    background: var(--zx-gradient-primary) !important;
    border: none !important;
    border-radius: var(--zx-radius-md) !important;
    padding: 0 24px !important;
    height: 44px !important;
    font-weight: 600 !important;
    box-shadow: var(--zx-shadow-md) !important;
}

.login #backtoblog a, .login #nav a {
    color: rgba(255, 255, 255, 0.7) !important;
}

.login #backtoblog a:hover, .login #nav a:hover {
    color: var(--zx-accent) !important;
}

/* ---- Tutor LMS 定制 ---- */
.tutor-course-card {
    border-radius: var(--zx-radius-lg) !important;
    overflow: hidden !important;
    border: 1px solid var(--zx-border) !important;
    transition: var(--zx-transition) !important;
}

.tutor-course-card:hover {
    box-shadow: var(--zx-shadow-lg) !important;
    transform: translateY(-4px) !important;
}

.tutor-course-card .tutor-course-header img {
    transition: var(--zx-transition) !important;
}

.tutor-course-card:hover .tutor-course-header img {
    transform: scale(1.05) !important;
}

.tutor-btn-primary, .tutor-btn {
    background: var(--zx-gradient-primary) !important;
    border-radius: var(--zx-radius-md) !important;
    border: none !important;
}

.tutor-btn-primary:hover {
    background: var(--zx-primary-light) !important;
}

.tutor-price-preview-text .price {
    color: var(--zx-accent) !important;
    font-weight: 700 !important;
}

/* ---- WooCommerce 定制 ---- */
.woocommerce .button, .woocommerce button.button {
    background: var(--zx-gradient-primary) !important;
    border-radius: var(--zx-radius-md) !important;
    border: none !important;
    padding: 12px 24px !important;
    font-weight: 600 !important;
}

.woocommerce .button:hover {
    background: var(--zx-primary-light) !important;
}

.woocommerce ul.products li.product {
    border: 1px solid var(--zx-border);
    border-radius: var(--zx-radius-lg);
    overflow: hidden;
    transition: var(--zx-transition);
}

.woocommerce ul.products li.product:hover {
    box-shadow: var(--zx-shadow-lg);
    transform: translateY(-4px);
}

.woocommerce span.onsale {
    background: var(--zx-accent) !important;
    color: var(--zx-primary) !important;
    border-radius: 50px !important;
    padding: 4px 12px !important;
    font-size: 12px !important;
    font-weight: 600 !important;
}

.woocommerce ul.products li.product .price {
    color: var(--zx-accent) !important;
    font-weight: 700 !important;
}

/* ---- 联系表单 ---- */
.wpforms-form {
    background: #fff;
    padding: 30px;
    border-radius: var(--zx-radius-lg);
    box-shadow: var(--zx-shadow-md);
    border: 1px solid var(--zx-border);
}

.wpforms-field-label {
    color: var(--zx-primary) !important;
    font-weight: 600 !important;
}

.wpforms-form input[type="text"],
.wpforms-form input[type="email"],
.wpforms-form input[type="tel"],
.wpforms-form textarea,
.wpforms-form select {
    border: 1px solid var(--zx-border) !important;
    border-radius: var(--zx-radius-sm) !important;
    padding: 12px 16px !important;
    font-size: 15px !important;
    transition: var(--zx-transition) !important;
}

.wpforms-form input:focus,
.wpforms-form textarea:focus {
    border-color: var(--zx-accent) !important;
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.1) !important;
    outline: none !important;
}

/* ---- 博客/资讯 ---- */
.entry-title a {
    color: var(--zx-primary) !important;
    transition: var(--zx-transition) !important;
}

.entry-title a:hover {
    color: var(--zx-accent) !important;
}

.read-more a, .more-link {
    color: var(--zx-accent) !important;
    font-weight: 600 !important;
}

/* ---- 响应式优化 ---- */
@media (max-width: 768px) {
    .hero-section {
        padding: 60px 0;
    }
    
    .feature-section {
        padding: 50px 0;
    }
    
    .cta-section {
        padding: 50px 0;
    }
}

/* ---- 动画效果 ---- */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fadeInUp {
    animation: fadeInUp 0.6s ease-out forwards;
}

/* 滚动条美化 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--zx-bg-light);
}

::-webkit-scrollbar-thumb {
    background: var(--zx-primary-light);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--zx-accent);
}