/* 
 * 神秘占卜 - 主样式表
 * 包含全局样式、布局和主要组件样式
 */

/* ===== 基础样式 ===== */
:root {
    /* 颜色变量 - 深色主题 */
    --color-primary: #7b5cff;
    --color-primary-dark: #5e41d0;
    --color-secondary: #ff9d5c;
    --color-accent: #ff5c8d;
    --color-background: #0a0a1a;
    --color-background-light: #141428;
    --color-text: #ffffff;
    --color-text-muted: #a0a0c0;
    --color-border: #2a2a4a;

    /* 字体变量 */
    --font-primary: 'Inter', sans-serif;
    --font-display: 'Cinzel', serif;

    /* 尺寸变量 */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 4rem;

    /* 动画变量 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* 阴影变量 */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.25);

    /* 边框变量 */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 16px;
    --border-radius-full: 9999px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-secondary);
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-display);
    font-weight: 500;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

p {
    margin-bottom: var(--spacing-md);
}

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

button {
    cursor: pointer;
    font-family: var(--font-primary);
}

ul {
    list-style: none;
}

/* ===== 布局 ===== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

section {
    padding: var(--spacing-xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-title {
    font-size: 2.5rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--border-radius-full);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== 导航栏 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(10, 10, 26, 0.8);
    backdrop-filter: blur(10px);
    transition: all var(--transition-normal);
    padding: var(--spacing-md) 0;
}

.navbar.scrolled {
    padding: var(--spacing-sm) 0;
    background-color: rgba(10, 10, 26, 0.95);
    box-shadow: var(--shadow-md);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 var(--spacing-md);
    max-width: 1200px;
    margin: 0 auto;
}

.nav-logo {
    display: flex;
    align-items: center;
    font-family: var(--font-display);
    font-size: 1.5rem;
}

.logo-symbol {
    margin-right: var(--spacing-sm);
    font-size: 1.8rem;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-lg);
    background-color: transparent;
}

.nav-link {
    color: var(--color-text);
    font-weight: 500;
    position: relative;
    padding: var(--spacing-xs) 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    transition: width var(--transition-normal);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
}

.nav-toggle .bar {
    width: 25px;
    height: 3px;
    background-color: var(--color-text);
    border-radius: var(--border-radius-full);
    transition: all var(--transition-fast);
}

/* ===== 英雄区域 ===== */
.hero {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    padding: 0 var(--spacing-md);
    z-index: 1;
}

.hero-title {
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
    line-height: 1.1;
}

.title-line {
    display: block;
}

.title-line.highlight {
    color: var(--color-primary);
    font-size: 4.5rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xl);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.hero-scroll {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 0;
    right: 0;
    margin: auto;
    transform: translateX(-50%);
    text-align: center;
    animation: bounce 2s infinite;
}

.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.scroll-arrow {
    font-size: 1.5rem;
    margin-top: var(--spacing-xs);
}

/* ===== 响应式设计 ===== */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        right: -100%;
        flex-direction: column;
        background-color: var(--color-background-light);
        width: 80%;
        height: calc(100vh - 70px);
        padding: var(--spacing-lg);
        transition: right var(--transition-normal);
        box-shadow: var(--shadow-lg);
        gap: var(--spacing-lg);
    }



    .nav-menu.active {
        right: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active .bar:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
    }

    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active .bar:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg);
    }

    .hero-title {
        font-size: 3rem;
    }

    .title-line.highlight {
        font-size: 3.5rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .section-title {
        font-size: 2rem;
    }
}

/* ===== 亮色主题 ===== */
[data-theme="light"] {
    --color-background: #f8fafc;
    --color-background-light: #ffffff;
    --color-text: #1e293b;
    --color-text-muted: #64748b;
    --color-border: #e2e8f0;
}

/* 亮色主题下的导航栏 */
[data-theme="light"] .navbar {
    background-color: rgba(248, 250, 252, 0.8);
}

[data-theme="light"] .navbar.scrolled {
    background-color: rgba(248, 250, 252, 0.95);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .nav-link {
    color: var(--color-text);
}

[data-theme="light"] .nav-link:hover {
    color: var(--color-primary);
}

[data-theme="light"] .logo-text {
    color: var(--color-text);
}

[data-theme="light"] .nav-toggle .bar {
    background-color: var(--color-text);
}

/* 亮色主题下的移动端菜单 */
@media (max-width: 768px) {
    [data-theme="light"] .nav-menu {
        background-color: var(--color-background-light);
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
        border: 1px solid var(--color-border);
    }
}

[data-theme="light"] .nav-menu .nav-link {
    color: var(--color-text);
}

[data-theme="light"] .nav-menu .nav-link:hover {
    color: var(--color-primary);
}

/* 亮色主题下的其他元素 */
[data-theme="light"] .hero-title {
    color: var(--color-text);
}

[data-theme="light"] .hero-subtitle {
    color: var(--color-text-muted);
}

[data-theme="light"] .scroll-indicator {
    color: var(--color-text-muted);
}

[data-theme="light"] .section-title {
    color: var(--color-primary);
}

[data-theme="light"] .section-subtitle {
    color: var(--color-text-muted);
}

/* 亮色主题下的卡片 */
[data-theme="light"] .feature-card,
[data-theme="light"] .card {
    background: var(--color-background-light);
    border-color: var(--color-border);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
}

[data-theme="light"] .feature-card:hover,
[data-theme="light"] .card:hover {
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .hero-background .stars {
    background-image:
        radial-gradient(2px 2px at 20px 30px, #64748b, transparent),
        radial-gradient(2px 2px at 40px 70px, rgba(100, 116, 139, 0.8), transparent),
        radial-gradient(1px 1px at 90px 40px, #475569, transparent),
        radial-gradient(1px 1px at 130px 80px, rgba(71, 85, 105, 0.6), transparent),
        radial-gradient(2px 2px at 160px 30px, #64748b, transparent);
}

[data-theme="light"] .floating-symbols .symbol {
    color: var(--color-primary);
    opacity: 0.2;
}

/* ===== 性能优化 ===== */
.will-change-transform {
    will-change: transform;
}

.will-change-opacity {
    will-change: opacity;
}

/* ===== 预加载动画 ===== */
.preload-animation {
    animation-play-state: paused;
}

.loaded .preload-animation {
    animation-play-state: running;
}

/* ===== 改进的焦点样式 ===== */
.focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ===== 滚动条样式 ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-background);
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary-dark);
}

/* ===== 选择文本样式 ===== */
::selection {
    background: var(--color-primary);
    color: white;
}

::-moz-selection {
    background: var(--color-primary);
    color: white;
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .title-line.highlight {
        font-size: 3rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .calculator-form {
        padding: 2rem !important;
    }
}