/*
Theme Name: Lumina
Theme URI: https://example.com/lumina
Author: 子恺
Author URI: https://example.com
Description: 简约明亮的单栏博客主题，带有大Banner和现代设计
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: lumina
Tags: blog, custom-background, custom-logo, custom-menu, featured-images, translation-ready
*/

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;600;700&family=Source+Sans+Pro:wght@300;400;600&display=swap');

/* CSS Variables */
:root {
    --primary: #FF6B6B;
    --secondary: #4ECDC4;
    --accent: #FFE66D;
    --bg: #FAFAFA;
    --card-bg: #FFFFFF;
    --text-primary: #2D3436;
    --text-secondary: #636E72;
    --shadow: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-hover: 0 8px 30px rgba(0,0,0,0.12);
}

body {
    font-family: 'Source Sans Pro', sans-serif;
    background-color: var(--bg);
    color: var(--text-primary);
    line-height: 1.8;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    height: auto;
}

/* ========================================
   导航栏
======================================== */
.lumina-navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 18px 20px;
    transition: box-shadow 0.3s ease;
}

.lumina-navbar.scrolled {
    box-shadow: 0 2px 20px rgba(0,0,0,0.06);
}

.lumina-navbar-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    align-items: center;
}

.lumina-logo {
    font-family: 'Playfair Display', serif;
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.5px;
    margin-right: 60px;
}

.lumina-logo span {
    color: var(--primary);
}

.lumina-nav {
    display: flex;
    gap: 36px;
    list-style: none;
    margin: 0 auto;
    padding: 0;
}

.lumina-nav a {
    font-size: 15px;
    font-weight: 400;
    position: relative;
    padding: 4px 0;
    transition: color 0.3s ease;
}

.lumina-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s ease;
}

.lumina-nav a:hover {
    color: var(--text-primary);
}

.lumina-nav a:hover::after {
    width: 100%;
}

.lumina-menu-toggle {
    display: none;
}

/* ========================================
   Banner
======================================== */
.lumina-banner {
    height: 350px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background-color: #1a1a2e;
    margin-top: 64px;
}

.lumina-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(12,12,12,0.4) 0%, rgba(26,26,46,0.3) 50%, rgba(22,33,62,0.4) 100%);
}

.lumina-banner-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
}

.lumina-banner-shapes .shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
}

.lumina-banner-shapes .shape-1 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, #4ECDC4 0%, transparent 70%);
    top: -150px;
    right: 5%;
    animation: lumina-float 10s ease-in-out infinite;
}

.lumina-banner-shapes .shape-2 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, #FF6B6B 0%, transparent 70%);
    bottom: -100px;
    left: 10%;
    animation: lumina-float 8s ease-in-out infinite reverse;
}

.lumina-banner-shapes .shape-3 {
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, #a29bfe 0%, transparent 70%);
    top: 40%;
    left: 60%;
    animation: lumina-float 7s ease-in-out infinite 1s;
}

@keyframes lumina-float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
}

.lumina-banner-content {
    position: relative;
    text-align: center;
    color: white;
    padding: 0 20px;
    animation: lumina-fadeInUp 1s ease-out;
}

@keyframes lumina-fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.lumina-banner-title {
    font-family: 'Playfair Display', serif;
    font-size: 56px;
    font-weight: 700;
    margin-bottom: 16px;
    text-shadow: 0 2px 20px rgba(0,0,0,0.1);
    letter-spacing: -1px;
}

.lumina-banner-subtitle {
    font-size: 20px;
    font-weight: 300;
    opacity: 0.95;
    max-width: 500px;
    margin: 0 auto;
}

.lumina-scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    animation: lumina-bounce 2s ease-in-out infinite;
}

.lumina-scroll-indicator span {
    display: block;
    width: 26px;
    height: 26px;
    border-right: 3px solid white;
    border-bottom: 3px solid white;
    transform: rotate(45deg);
    opacity: 0.8;
}

@keyframes lumina-bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

/* ========================================
   主内容区
======================================== */
.lumina-main {
    max-width: 1100px;
    margin: 0 auto;
    padding: 80px 40px;
}

.lumina-section-title {
    font-family: 'Playfair Display', serif;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.lumina-section-title::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, #ddd, transparent);
}

/* ========================================
   文章卡片
======================================== */
.lumina-post-card {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 40px 48px;
    margin-bottom: 32px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.lumina-post-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
}

.lumina-post-category {
    display: inline-block;
    padding: 6px 14px;
    background: var(--secondary);
    color: white;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 20px;
    margin-bottom: 20px;
}

.lumina-post-category.tech { background: #FF6B6B; }
.lumina-post-category.lifestyle { background: #4ECDC4; }
.lumina-post-category.design { background: #A29BFE; }
.lumina-post-category.travel { background: #FFE66D; color: var(--text-primary); }

.lumina-post-title {
    font-family: 'Playfair Display', serif;
    font-size: 32px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
    transition: color 0.3s ease;
    line-height: 1.4;
    display: block;
}

.lumina-post-card:hover .lumina-post-title {
    color: var(--primary);
}

.lumina-post-excerpt {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.85;
    margin-bottom: 24px;
}

.lumina-post-meta {
    display: flex;
    align-items: center;
    gap: 24px;
    font-size: 14px;
    color: var(--text-secondary);
    flex-wrap: wrap;
}

.lumina-post-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.lumina-post-meta svg {
    width: 16px;
    height: 16px;
    opacity: 0.7;
}

/* 分页 */
.lumina-pagination {
    text-align: center;
    margin-top: 20px;
}

.lumina-pagination a,
.lumina-pagination span {
    display: inline-block;
    padding: 12px 20px;
    margin: 0 4px;
    background: var(--text-primary);
    color: white;
    font-size: 14px;
    font-weight: 600;
    border-radius: 30px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.lumina-pagination a:hover {
    background: var(--primary);
    transform: translateY(-2px);
}

.lumina-pagination .current {
    background: var(--primary);
}

/* ========================================
   文章内容页
======================================== */
.lumina-single {
    max-width: 800px;
    margin: 0 auto;
    padding: 60px 24px;
}

.lumina-single-header {
    text-align: center;
    margin-bottom: 48px;
}

.lumina-single-category {
    display: inline-block;
    padding: 6px 14px;
    background: var(--secondary);
    color: white;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 20px;
    margin-bottom: 20px;
}

.lumina-single-title {
    font-family: 'Playfair Display', serif;
    font-size: 42px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 24px;
    line-height: 1.3;
}

.lumina-single-meta {
    display: flex;
    justify-content: center;
    gap: 24px;
    font-size: 14px;
    color: var(--text-secondary);
}

.lumina-single-content {
    font-size: 18px;
    line-height: 1.9;
    color: var(--text-primary);
}

.lumina-single-content p {
    margin-bottom: 24px;
}

.lumina-single-content h2 {
    font-family: 'Playfair Display', serif;
    font-size: 28px;
    margin: 40px 0 20px;
    color: var(--text-primary);
}

.lumina-single-content h3 {
    font-family: 'Playfair Display', serif;
    font-size: 22px;
    margin: 32px 0 16px;
}

.lumina-single-content img {
    border-radius: 12px;
    margin: 24px 0;
}

.lumina-single-content blockquote {
    border-left: 4px solid var(--primary);
    padding-left: 24px;
    margin: 24px 0;
    color: var(--text-secondary);
    font-style: italic;
}

.lumina-single-content code {
    background: #f5f5f5;
    padding: 2px 8px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 15px;
}

.lumina-single-content pre {
    background: #2d3436;
    color: #fff;
    padding: 24px;
    border-radius: 12px;
    overflow-x: auto;
    margin: 24px 0;
}

.lumina-single-content pre code {
    background: none;
    padding: 0;
    color: inherit;
}

.lumina-single-tags {
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid #eee;
}

.lumina-single-tags a {
    display: inline-block;
    padding: 6px 14px;
    background: var(--bg);
    color: var(--text-secondary);
    font-size: 13px;
    border-radius: 20px;
    margin-right: 8px;
    margin-bottom: 8px;
    transition: all 0.3s ease;
}

.lumina-single-tags a:hover {
    background: var(--primary);
    color: white;
}

/* ========================================
   页脚
======================================== */
.lumina-footer {
    background: var(--card-bg);
    padding: 60px 24px 40px;
    margin-top: 40px;
    border-top: 1px solid #eee;
}

.lumina-footer-inner {
    max-width: 820px;
    margin: 0 auto;
    text-align: center;
}

.lumina-social-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 32px;
}

.lumina-social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--bg);
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.lumina-social-links a:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-3px);
}

.lumina-social-links svg {
    width: 20px;
    height: 20px;
}

.lumina-footer-text {
    font-size: 14px;
    color: var(--text-secondary);
}

.lumina-footer-text a {
    color: var(--primary);
}

/* ========================================
   响应式
======================================== */
@media (max-width: 768px) {
    .lumina-navbar {
        padding: 16px 20px;
    }

    .lumina-navbar-inner {
        justify-content: space-between;
    }

    .lumina-logo {
        margin-right: 0;
    }

    .lumina-menu-toggle {
        display: flex;
        flex-direction: column;
        gap: 5px;
        cursor: pointer;
        padding: 8px;
    }

    .lumina-menu-toggle span {
        width: 24px;
        height: 2px;
        background: var(--text-primary);
        transition: 0.3s;
    }

    .lumina-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 20px;
        gap: 16px;
        box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    }

    .lumina-nav.active {
        display: flex;
    }

    .lumina-banner {
        height: 280px;
        margin-top: 60px;
    }

    .lumina-banner-title {
        font-size: 36px;
    }

    .lumina-banner-subtitle {
        font-size: 16px;
    }

    .lumina-main {
        padding: 50px 20px;
    }

    .lumina-post-card {
        padding: 28px 24px;
    }

    .lumina-post-title {
        font-size: 24px;
    }

    .lumina-post-meta {
        flex-wrap: wrap;
        gap: 12px;
    }

    .lumina-single {
        padding: 40px 20px;
    }

    .lumina-single-title {
        font-size: 28px;
    }
}

@media (max-width: 480px) {
    .lumina-main {
        padding: 40px 16px;
    }

    .lumina-post-card {
        padding: 20px;
        border-radius: 12px;
    }
}

/* WordPress 必需 */
.wp-caption {
    margin-bottom: 24px;
}

.wp-caption-text {
    text-align: center;
    font-size: 14px;
    color: var(--text-secondary);
}

.alignleft {
    float: left;
    margin-right: 24px;
}

.alignright {
    float: right;
    margin-left: 24px;
}

.aligncenter {
    display: block;
    margin: 0 auto;
}