/* ==========================================================================
   全局样式模块 (global-styles.css)
   功能：绿色系游戏风格 + 统一圆角设计
   ========================================================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding-top: 90px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
    transition: background-color 0.3s ease;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: #0a0f0a;
    color: #ffffff;
}

/* ==========================================================================
   统一设计系统
   ========================================================================== */
:root {
    --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
    --ease-in-out-quart: cubic-bezier(0.76, 0, 0.24, 1);
    --duration-fast: 0.2s;
    --duration-normal: 0.35s;
    --duration-slow: 0.5s;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --game-green: #22c55e;
    --game-green-dark: #16a34a;
    --game-green-light: #4ade80;
    --game-green-glow: rgba(34, 197, 94, 0.3);
}

/* ==========================================================================
   导航栏 - 游戏风格绿色渐变
   ========================================================================== */
.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 28px;
    background: linear-gradient(135deg, #14532d 0%, #166534 50%, #15803d 100%);
    border-bottom: 2px solid var(--game-green);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transform: translate3d(0, 0, 0);
    transition: transform var(--duration-normal) var(--ease-out-quart),
                box-shadow var(--duration-fast) ease;
    will-change: transform;
    backface-visibility: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.main-header.header-hidden {
    transform: translate3d(0, -101%, 0);
    transition: transform var(--duration-slow) var(--ease-in-out-quart);
}

.main-header.header-visible {
    transform: translate3d(0, 0, 0);
}

.main-header.header-scrolled {
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6),
                0 0 30px var(--game-green-glow);
}

.header-title {
    font-size: 26px;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: #ffffff;
    text-shadow: 0 0 20px var(--game-green-glow);
}

.top-controls {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* ==========================================================================
   语言选择器 - 绿色游戏风格
   ========================================================================== */
.language-selector {
    position: relative;
    display: inline-block;
}

.lang-btn {
    padding: 10px 14px;
    font-size: 14px;
    cursor: pointer;
    border: 2px solid var(--game-green-dark);
    background: linear-gradient(135deg, #14532d 0%, #166534 100%);
    transition: all var(--duration-fast) var(--ease-out-quart);
    will-change: transform;
    border-radius: var(--radius-md);
    color: #ffffff;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.lang-btn .fi {
    width: 20px;
    height: 15px;
    border-radius: 2px;
}

.lang-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4),
                0 0 20px var(--game-green-glow);
    background: linear-gradient(135deg, #166534 0%, #15803d 100%);
    border-color: var(--game-green);
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: auto;
    width: auto;
    background: linear-gradient(135deg, #14532d 0%, #166534 100%);
    border: 2px solid var(--game-green-dark);
    border-radius: var(--radius-md);
    overflow: hidden;
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    transform: translate3d(0, -8px, 0);
    transition: opacity var(--duration-normal) var(--ease-out-quart),
                transform var(--duration-normal) var(--ease-out-quart),
                visibility var(--duration-normal) ease;
    will-change: opacity, transform;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    white-space: nowrap;
}

.lang-dropdown.dropdown-open {
    opacity: 1;
    visibility: visible;
    transform: translate3d(0, 0, 0);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5),
                0 0 30px var(--game-green-glow);
}

.lang-dropdown.closing {
    opacity: 0;
    transform: translate3d(0, -8px, 0);
}

.lang-option {
    padding: 12px 16px;
    font-size: 14px;
    cursor: pointer;
    border-bottom: 1px solid rgba(34, 197, 94, 0.2);
    transition: all var(--duration-fast) ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.lang-option .fi {
    width: 20px;
    height: 15px;
    border-radius: 2px;
    flex-shrink: 0;
}

.lang-option:last-child {
    border-bottom: none;
}

.lang-option:hover {
    background: var(--game-green-dark);
}

.lang-option.active {
    background: var(--game-green);
}

/* ==========================================================================
   基础按钮样式 - 绿色游戏风格
   ========================================================================== */
.base-btn {
    padding: 10px 18px;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    border: 2px solid var(--game-green-dark);
    background: linear-gradient(135deg, #14532d 0%, #166534 100%);
    transition: all var(--duration-fast) var(--ease-out-quart);
    will-change: transform;
    border-radius: var(--radius-md);
    color: #ffffff;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.base-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4),
                0 0 20px var(--game-green-glow);
    background: linear-gradient(135deg, #166534 0%, #15803d 100%);
    border-color: var(--game-green);
}

.base-btn:active {
    transform: translateY(0);
}

/* ==========================================================================
   内容区域 - 游戏卡片风格
   ========================================================================== */
.content-section {
    display: none;
    max-width: 800px;
    margin: 0 auto 50px;
    padding: 20px;
    flex: 1;
}

.content-section.active {
    display: block !important;
    opacity: 1 !important;
    transform: translateY(0) !important;
    animation: none !important;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.editor-area {
    min-height: 320px;
    padding: 50px;
    border: 2px solid var(--game-green-dark);
    background: linear-gradient(180deg, #0f170f 0%, #0a0f0a 100%);
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5),
                inset 0 0 60px rgba(0, 0, 0, 0.5);
}

.editor-area h1 {
    font-size: 38px;
    margin-bottom: 28px;
    line-height: 1.3;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--game-green-light);
    text-shadow: 0 0 30px var(--game-green-glow);
}

.editor-area p {
    font-size: 18px;
    line-height: 1.9;
    margin-bottom: 14px;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.85);
}

/* ==========================================================================
   页脚区域 - 绿色游戏风格
   ========================================================================== */
.site-footer {
    margin-top: auto;
    border-top: 2px solid var(--game-green-dark);
    padding: 35px 20px;
    text-align: center;
    background: linear-gradient(180deg, #0a0f0a 0%, #070a07 100%);
}

.footer-content {
    max-width: 800px;
    margin: 0 auto;
}

.contact-section h3 {
    font-size: 18px;
    margin-bottom: 18px;
    font-weight: 700;
    color: var(--game-green-light);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.contact-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 22px;
}

.contact-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    width: 48px;
    height: 48px;
    padding: 0;
    border: 2px solid var(--game-green-dark);
    background: linear-gradient(135deg, #14532d 0%, #166534 100%);
    border-radius: var(--radius-md);
    color: #ffffff;
    font-size: 14px;
    font-weight: 600;
    transition: all var(--duration-normal) var(--ease-out-quart);
    cursor: pointer;
    overflow: hidden;
}

.contact-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3),
                0 0 15px var(--game-green-glow);
    background: linear-gradient(135deg, #166534 0%, #15803d 100%);
    border-color: var(--game-green);
}

.contact-link.email-expandable {
    width: 48px;
}

.contact-link.email-expandable.expanded {
    width: 260px;
    gap: 10px;
    padding: 0 14px;
}

.contact-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.leyuan-text {
    font-size: 18px;
    font-weight: 900;
    letter-spacing: 1px;
}

.email-text {
    white-space: nowrap;
    overflow: hidden;
    width: 0;
    opacity: 0;
    transition: all var(--duration-normal) var(--ease-out-quart);
    font-size: 13px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
    user-select: text;
    cursor: text;
}

.email-expandable.expanded .email-text {
    width: auto;
    opacity: 1;
}

.contact-link.bilibili-link {
    display: none;
}

.contact-link.youtube-link {
    display: none;
}

.contact-link.leyuan233-link {
    display: none;
}

body.lang-cn .contact-link.bilibili-link,
body.lang-cn .contact-link.leyuan233-link {
    display: flex;
}

body.lang-tw .contact-link.bilibili-link,
body.lang-tw .contact-link.youtube-link {
    display: flex;
}

body.lang-en .contact-link.youtube-link,
body.lang-ru .contact-link.youtube-link,
body.lang-ja .contact-link.youtube-link,
body.lang-ko .contact-link.youtube-link,
body.lang-fr .contact-link.youtube-link,
body.lang-de .contact-link.youtube-link {
    display: flex;
}

.copyright {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
    padding-top: 22px;
    border-top: 1px solid rgba(34, 197, 94, 0.2);
    font-weight: 400;
}

/* 通用链接样式 */
a {
    text-decoration: none;
    color: inherit;
}