/**
 * 黑客风格主题样式
 * 主题色：白色 (#ffffff, #cccccc) + 黑色 (#000000, #0a0a0a)
 */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600;700&display=swap');

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

:root {
    /* 黑客风格颜色变量 - 黑白配色（黑夜主题：全黑背景+白字） */
    --hacker-green: #ffffff;
    --hacker-green-bright: #ffffff;
    --hacker-green-dim: #cccccc;
    --hacker-green-dark: #888888;
    --hacker-bg: #000000;
    --hacker-bg-dark: #000000;
    --hacker-bg-darker: #000000;
    --hacker-bg-light: #000000;
    --hacker-border: #ffffff;
    --hacker-text: #ffffff;
    --hacker-text-dim: #cccccc;
    --hacker-text-dark: #888888;
    --hacker-shadow: rgba(255, 255, 255, 0.3);
    --hacker-shadow-bright: rgba(255, 255, 255, 0.5);
    
    /* 统一的排版系统 */
    --base-font-size: 16px;
    --font-size-xs: 0.75rem;    /* 12px */
    --font-size-sm: 0.875rem;   /* 14px */
    --font-size-base: 1rem;     /* 16px */
    --font-size-md: 1.125rem;   /* 18px */
    --font-size-lg: 1.25rem;    /* 20px */
    --font-size-xl: 1.5rem;     /* 24px */
    --font-size-2xl: 1.875rem;  /* 30px */
    --font-size-3xl: 2.25rem;   /* 36px */
    
    /* 统一的间距系统 */
    --spacing-xs: 0.25rem;   /* 4px */
    --spacing-sm: 0.5rem;    /* 8px */
    --spacing-md: 1rem;      /* 16px */
    --spacing-lg: 1.5rem;    /* 24px */
    --spacing-xl: 2rem;      /* 32px */
    --spacing-2xl: 3rem;     /* 48px */
    
    /* 统一的组件尺寸 */
    --border-width: 2px;
    --border-radius: 10px;
    --input-height: 2.75rem;     /* 44px */
    --button-height: 2.75rem;    /* 44px */
    --button-padding-x: 1.5rem;  /* 24px */
    --button-padding-y: 0.75rem; /* 12px */
    --card-padding: 1.25rem;     /* 20px */
    --card-gap: 1rem;            /* 16px */
}

/* 白天主题 */
[data-theme="light"] {
    /* 白天主题 - 白黑配色（反过来） */
    --hacker-green: #1a1a1a;
    --hacker-green-bright: #000000;
    --hacker-green-dim: #4a4a4a;
    --hacker-green-dark: #666666;
    --hacker-bg: #ffffff;
    --hacker-bg-dark: #f8f8f8;
    --hacker-bg-darker: #f5f5f5;
    --hacker-bg-light: #eeeeee;
    --hacker-border: rgba(0, 0, 0, 0.15);
    --hacker-text: #1a1a1a;
    --hacker-text-dim: #4a4a4a;
    --hacker-text-dark: #666666;
    --hacker-shadow: rgba(0, 0, 0, 0.1);
    --hacker-shadow-bright: rgba(0, 0, 0, 0.2);
}

body {
    font-family: 'JetBrains Mono', 'Courier New', monospace;
    font-size: var(--base-font-size);
    background: var(--hacker-bg);
    min-height: 100vh;
    color: var(--hacker-text);
    line-height: 1.6;
    position: relative;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color 0.3s, color 0.3s;
}

/* 终端闪烁光标效果 */
@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.container {
    max-width: 100%;
    width: 100%;
    margin: 0 auto;
    padding: var(--spacing-lg);
    position: relative;
    z-index: 1;
}

/* Header */
.header {
    background: transparent;
    border: none;
    padding: var(--spacing-md) var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    gap: var(--spacing-md);
}

/* 简化的顶部栏 */
.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    gap: var(--spacing-md);
    background: transparent;
}

.top-actions {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.notification-btn {
    position: relative;
    background: var(--hacker-bg-dark);
    border: none;
    color: var(--hacker-text);
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    font-size: var(--font-size-lg);
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 2.5rem;
    min-height: 2.5rem;
    box-shadow: 0 2px 8px var(--hacker-shadow);
    border-radius: var(--border-radius);
}

.notification-btn:hover {
    background: var(--hacker-bg-light);
    box-shadow: 0 0 10px var(--hacker-shadow);
}

.header-simple {
    background: transparent;
    border: none;
    padding: var(--spacing-md) var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
}

.header::before {
    content: '>';
    position: absolute;
    left: 10px;
    color: var(--hacker-green);
    animation: blink 1s infinite;
    font-size: 20px;
}

.logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--hacker-green-bright);
    margin: 0;
    text-shadow: 0 0 10px var(--hacker-green), 0 0 20px var(--hacker-green);
    letter-spacing: 0.125rem;
    line-height: 1.2;
}

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

.nav {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
    flex-wrap: wrap;
    font-size: var(--font-size-sm);
}

/* 侧边栏导航链接悬停效果 */
aside {
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
}

aside nav a,
aside nav button {
    color: var(--hacker-text) !important;
    border: none !important;
    transition: all 0.3s !important;
}

aside nav a:hover,
aside nav button:hover {
    background: var(--hacker-bg-light) !important;
    box-shadow: 0 0 10px var(--hacker-shadow) !important;
}

/* Buttons */
.btn {
    padding: var(--button-padding-y) var(--button-padding-x);
    min-height: var(--button-height);
    border: none;
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: var(--hacker-bg-dark);
    color: var(--hacker-text);
    font-family: 'JetBrains Mono', monospace;
    text-transform: uppercase;
    letter-spacing: 0.0625rem;
    position: relative;
    overflow: hidden;
    white-space: nowrap;
    box-shadow: 0 2px 8px var(--hacker-shadow);
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, var(--hacker-shadow), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn:hover {
    background: var(--hacker-bg-light);
    box-shadow: 0 4px 12px var(--hacker-shadow);
    transform: translateY(-2px);
}

.btn-primary {
    background: var(--hacker-bg-light);
    color: var(--hacker-green-bright);
    box-shadow: 0 2px 10px var(--hacker-shadow);
    margin-top: var(--spacing-md);
    width: 100%;
}

/* 导航栏中的按钮大小一致 */
.nav .btn-primary {
    width: auto;
    margin-top: 0;
}

.btn-primary:hover {
    background: var(--hacker-bg-light);
    box-shadow: 0 4px 15px var(--hacker-shadow-bright);
}

.btn-sm {
    padding: var(--spacing-sm) var(--spacing-md);
    min-height: 2.25rem;
    font-size: var(--font-size-xs);
    letter-spacing: 0.05rem;
}

.btn-light {
    background: var(--hacker-bg-light);
    color: var(--hacker-text);
    box-shadow: 0 2px 6px var(--hacker-shadow);
}

/* Auth Box */
.auth-box {
    background: var(--hacker-bg-dark);
    border: none;
    border-radius: var(--border-radius);
    padding: var(--spacing-2xl) var(--spacing-2xl);
    box-shadow: 0 4px 20px var(--hacker-shadow);
    max-width: 600px;
    margin: var(--spacing-2xl) auto;
    width: 100%;
}

.auth-box h1.logo {
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.auth-box h2 {
    margin-bottom: var(--spacing-2xl);
    text-align: center;
    color: var(--hacker-green-bright);
    text-shadow: 0 0 10px var(--hacker-green);
    font-size: var(--font-size-2xl);
    font-weight: 700;
    line-height: 1.2;
}

/* Form */
.form-group {
    margin-bottom: var(--spacing-xl);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    color: var(--hacker-text);
    text-transform: uppercase;
    font-size: var(--font-size-xs);
    letter-spacing: 0.0625rem;
    line-height: 1.4;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    min-height: var(--input-height);
    padding: var(--spacing-md);
    border: none;
    border-radius: var(--border-radius);
    background: var(--hacker-bg-dark);
    color: var(--hacker-text);
    font-family: 'JetBrains Mono', monospace;
    font-size: var(--font-size-base);
    transition: all 0.3s;
    line-height: 1.5;
    box-shadow: 0 2px 8px var(--hacker-shadow);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    background: var(--hacker-bg-light);
    box-shadow: 0 0 15px var(--hacker-shadow-bright), inset 0 0 5px var(--hacker-shadow);
}

.form-group textarea {
    resize: vertical;
}

/* Logo Select Dropdown */
.logo-select {
    position: relative;
    width: 100%;
}

.logo-select-btn {
    width: 100%;
    min-height: var(--input-height);
    padding: var(--spacing-md);
    border: none;
    border-radius: var(--border-radius);
    background: var(--hacker-bg-dark);
    color: var(--hacker-text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
    transition: all 0.3s;
    box-shadow: 0 2px 8px var(--hacker-shadow);
}

.logo-select-btn:hover {
    background: var(--hacker-bg-light);
    box-shadow: 0 0 15px var(--hacker-shadow);
}

.logo-select-btn:focus {
    outline: none;
    background: var(--hacker-bg-light);
    box-shadow: 0 0 15px var(--hacker-shadow), inset 0 0 5px var(--hacker-shadow);
}

.logo-select-btn::after {
    content: '▼';
    font-size: var(--font-size-xs);
    color: var(--hacker-text-dim);
    transition: transform 0.3s;
    flex-shrink: 0;
}

.logo-select-btn:active::after,
.logo-select.active .logo-select-btn::after {
    transform: rotate(180deg);
}

.logo-select-list {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--hacker-bg-dark);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 20px var(--hacker-shadow);
    max-height: 300px;
    overflow-y: auto;
    overflow-x: hidden;
    z-index: 1000;
    display: none;
    margin-top: var(--spacing-xs);
    border: 1px solid var(--hacker-border);
}

.logo-select-list.open {
    display: block;
}

.logo-select-item {
    padding: var(--spacing-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: all 0.2s;
    color: var(--hacker-text);
    border-bottom: 1px solid var(--hacker-border);
}

.logo-select-item:last-child {
    border-bottom: none;
}

.logo-select-item:hover {
    background: var(--hacker-bg-light);
    box-shadow: inset 0 0 10px var(--hacker-shadow);
    color: var(--hacker-green-bright);
}

.logo-select-item:active {
    background: var(--hacker-bg-light);
}

.logo-select-item img {
    width: 24px;
    height: 24px;
    object-fit: contain;
    flex-shrink: 0;
    border-radius: var(--border-radius);
}

.logo-placeholder {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--hacker-bg-light);
    color: var(--hacker-green);
    font-weight: 600;
    font-size: var(--font-size-xs);
    flex-shrink: 0;
    border-radius: var(--border-radius);
    box-shadow: 0 0 5px var(--hacker-shadow);
}

.logo-select-item span:last-child {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.logo-select-btn span {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex: 1;
}

.logo-select-btn img {
    width: 20px;
    height: 20px;
    object-fit: contain;
    flex-shrink: 0;
}

.logo-select-btn .logo-placeholder {
    width: 20px;
    height: 20px;
    font-size: 0.7rem;
}

/* 滚动条样式 */
.logo-select-list::-webkit-scrollbar {
    width: 6px;
}

.logo-select-list::-webkit-scrollbar-track {
    background: var(--hacker-bg-darker);
}

.logo-select-list::-webkit-scrollbar-thumb {
    background: var(--hacker-green-dim);
    border-radius: var(--border-radius);
}

.logo-select-list::-webkit-scrollbar-thumb:hover {
    background: var(--hacker-green);
    box-shadow: 0 0 5px var(--hacker-green);
}

/* Tabs */
.tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--hacker-border);
    flex-wrap: wrap;
}

.tab-btn {
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    background: none;
    cursor: pointer;
    font-size: var(--font-size-base);
    color: var(--hacker-text-dim);
    border-bottom: var(--border-width) solid transparent;
    margin-bottom: calc(var(--border-width) * -1);
    transition: all 0.3s;
    font-family: 'JetBrains Mono', monospace;
    margin-right: var(--spacing-md);
    font-weight: 500;
    white-space: nowrap;
}

.tab-btn:hover {
    color: var(--hacker-green-bright);
}

.tab-btn.active {
    color: var(--hacker-green-bright);
    border-bottom-color: var(--hacker-green-bright);
    font-weight: 600;
    text-shadow: 0 0 5px var(--hacker-green);
    background: var(--hacker-bg-light);
}

.tab-content {
    display: none;
    padding-top: var(--spacing-lg);
}

.tab-content.active {
    display: block;
}

/* Alert */
.alert {
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    margin-bottom: 0;
    margin-top: 0;
    border: none;
    background: var(--hacker-bg-dark);
    font-size: var(--font-size-base);
    line-height: 1.6;
    box-shadow: 0 2px 12px var(--hacker-shadow);
    transition: box-shadow 0.3s ease;
}

.alert-info {
    color: var(--hacker-text);
    box-shadow: 0 2px 12px var(--hacker-shadow);
}

/* Message */
.message {
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    margin: var(--spacing-lg) 0;
    display: none;
    border: none;
    font-family: 'JetBrains Mono', monospace;
    font-size: var(--font-size-sm);
    line-height: 1.5;
}

.message.success {
    background: var(--hacker-bg-dark);
    color: var(--hacker-green-bright);
    display: block;
    box-shadow: 0 2px 12px var(--hacker-shadow);
}

.message.error {
    background: var(--hacker-bg-dark);
    color: #ff4444;
    display: block;
    box-shadow: 0 2px 12px rgba(255, 68, 68, 0.3);
}

.message.info {
    background: var(--hacker-bg-dark);
    color: var(--hacker-text);
    display: block;
    box-shadow: 0 2px 10px var(--hacker-shadow);
}

/* Main Content */
.main-content {
    background: transparent;
    border: none;
    padding: var(--spacing-xl);
}

.welcome-section {
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.welcome-section h2 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-md);
    color: var(--hacker-green-bright);
    text-shadow: 0 0 15px var(--hacker-green);
    line-height: 1.2;
    font-weight: 700;
}

.welcome-section p {
    font-size: var(--font-size-md);
    color: var(--hacker-text-dim);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

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

.content-area {
    padding: var(--spacing-lg);
    min-height: 12.5rem;
    max-width: 100%;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

/* Post Composer */
.post-composer {
    border: none;
    border-radius: var(--border-radius);
    padding: var(--card-padding);
    background: var(--hacker-bg-dark);
    margin-bottom: 0;
    box-shadow: 0 2px 12px var(--hacker-shadow);
    transition: box-shadow 0.3s ease;
}

.post-composer:hover {
    box-shadow: 0 4px 16px var(--hacker-shadow);
}

.post-composer textarea {
    width: 100%;
    min-height: 6rem;
    border: none;
    border-radius: var(--border-radius);
    background: var(--hacker-bg);
    color: var(--hacker-text);
    padding: var(--spacing-md);
    resize: vertical;
    font-size: var(--font-size-base);
    font-family: 'JetBrains Mono', monospace;
    line-height: 1.6;
    box-shadow: 0 2px 8px var(--hacker-shadow);
}

.post-composer textarea:focus {
    background: var(--hacker-bg-light);
    box-shadow: 0 0 15px var(--hacker-shadow);
    outline: none;
}

.post-composer .composer-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
    flex-wrap: wrap;
}

.composer-tools {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
    flex-wrap: wrap;
    flex: 1;
    min-width: 0;
}

.count {
    font-size: var(--font-size-xs);
    color: var(--hacker-text-dim);
    line-height: 1.4;
}

.count.over {
    color: #ff4444;
    text-shadow: 0 0 5px #ff4444;
}

/* Post List */
.post-list {
    display: flex;
    flex-direction: column;
    gap: var(--card-gap);
}

.post-item {
    border: none;
    border-radius: var(--border-radius);
    padding: var(--card-padding);
    background: var(--hacker-bg-dark);
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 2px 10px var(--hacker-shadow);
    position: relative;
}

.post-item::before {
    content: '>';
    position: absolute;
    left: 5px;
    top: 14px;
    color: var(--hacker-green);
    opacity: 0;
    transition: opacity 0.3s;
}

.post-item:hover {
    background: var(--hacker-bg-light);
    box-shadow: 0 4px 15px var(--hacker-shadow-bright);
    transform: translateY(-2px);
}

.post-item:hover::before {
    opacity: 1;
}

.post-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-sm);
    color: var(--hacker-text-dim);
    margin-bottom: var(--spacing-sm);
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.post-author {
    font-weight: 600;
    color: var(--hacker-green-bright);
    text-shadow: 0 0 5px var(--hacker-green);
}

.post-author a {
    color: inherit;
    text-decoration: none;
}

.post-author a:hover {
    text-shadow: 0 0 10px var(--hacker-green);
}

.post-time {
    color: var(--hacker-text-dark);
}

.post-time a {
    color: inherit;
    text-decoration: none;
}

.post-delete-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 16px;
    padding: 4px 8px;
    opacity: 0.6;
    transition: all 0.2s;
    color: #ff4444;
}

.post-delete-btn:hover {
    opacity: 1;
    text-shadow: 0 0 5px #ff4444;
}

.post-body {
    white-space: pre-wrap;
    word-break: break-word;
    font-size: var(--font-size-base);
    color: var(--hacker-text);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.post-media {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.post-media img {
    width: 100%;
    border: none;
    object-fit: cover;
    filter: brightness(0.9) contrast(1.1);
    box-shadow: 0 2px 8px var(--hacker-shadow);
}

.post-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    flex-wrap: wrap;
}

.action-btn {
    border: none;
    border-radius: var(--border-radius);
    background: var(--hacker-bg);
    color: var(--hacker-text);
    padding: var(--spacing-sm) var(--spacing-md);
    min-height: 2rem;
    cursor: pointer;
    font-size: var(--font-size-sm);
    display: inline-flex;
    gap: var(--spacing-xs);
    align-items: center;
    font-family: 'JetBrains Mono', monospace;
    transition: all 0.3s;
    white-space: nowrap;
    box-shadow: 0 2px 6px var(--hacker-shadow);
}

.action-btn:hover {
    box-shadow: 0 2px 10px var(--hacker-shadow);
    background: var(--hacker-bg-light);
}

.action-btn .count {
    font-weight: 600;
}

.action-btn.active {
    background: var(--hacker-bg-light);
    color: var(--hacker-green-bright);
    box-shadow: 0 2px 12px var(--hacker-shadow-bright);
}

/* Links */
.mention-link,
.hashtag-link {
    color: var(--hacker-green-bright);
    text-decoration: none;
    font-weight: 500;
    text-shadow: 0 0 5px var(--hacker-green);
}

.mention-link:hover,
.hashtag-link:hover {
    text-decoration: underline;
    text-shadow: 0 0 10px var(--hacker-green);
}

/* Link Preview */
.link-preview,
.link-card {
    display: flex;
    gap: var(--spacing-md);
    align-items: stretch;
    padding: var(--spacing-md);
    border: none;
    border-radius: var(--border-radius);
    margin-top: var(--spacing-md);
    background: var(--hacker-bg-dark);
    text-decoration: none;
    color: inherit;
    transition: all 0.3s;
    box-shadow: 0 2px 10px var(--hacker-shadow);
}

.link-card:hover {
    box-shadow: 0 4px 15px var(--hacker-shadow-bright);
    transform: translateY(-2px);
}

.link-thumb {
    width: 88px;
    min-width: 88px;
    border: none;
    background-color: var(--hacker-bg);
    background-size: cover;
    background-position: center;
    box-shadow: 0 2px 8px var(--hacker-shadow);
}

.link-meta {
    flex: 1;
    min-width: 0;
}

.link-title {
    font-weight: 600;
    color: var(--hacker-green-bright);
    font-size: var(--font-size-base);
    line-height: 1.4;
}

.link-desc {
    font-size: var(--font-size-sm);
    color: var(--hacker-text-dim);
    margin-top: var(--spacing-xs);
    line-height: 1.5;
}

/* Comments */
.comment-box {
    margin-top: var(--spacing-md);
    border-top: 1px solid var(--hacker-border);
    padding-top: var(--spacing-md);
}

.comment-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.comment-item {
    background: var(--hacker-bg);
    border: none;
    border-radius: var(--border-radius);
    padding: var(--spacing-sm) var(--spacing-md);
    box-shadow: 0 2px 8px var(--hacker-shadow);
}

.comment-meta {
    display: flex;
    justify-content: space-between;
    font-size: var(--font-size-xs);
    color: var(--hacker-text-dark);
    margin-bottom: var(--spacing-xs);
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.comment-body {
    font-size: var(--font-size-sm);
    color: var(--hacker-text);
    word-break: break-word;
    line-height: 1.5;
}

.comment-form {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
    flex-wrap: wrap;
}

.comment-form input {
    flex: 1;
    min-width: 200px;
    border: none;
    background: var(--hacker-bg-dark);
    color: var(--hacker-text);
    border-radius: var(--border-radius);
    padding: var(--spacing-sm) var(--spacing-md);
    min-height: 2.25rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: var(--font-size-sm);
    box-shadow: 0 2px 8px var(--hacker-shadow);
}

.comment-form input:focus {
    background: var(--hacker-bg-light);
    outline: none;
    box-shadow: 0 0 10px var(--hacker-shadow);
}

/* Quote Card */
.quote-card {
    margin-top: var(--spacing-md);
    border: none;
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    background: var(--hacker-bg);
    box-shadow: 0 2px 8px var(--hacker-shadow);
}

.quote-header {
    display: flex;
    justify-content: space-between;
    font-size: var(--font-size-xs);
    color: var(--hacker-text-dark);
    margin-bottom: var(--spacing-xs);
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.quote-body {
    font-size: var(--font-size-sm);
    color: var(--hacker-text);
    line-height: 1.5;
}

/* Poll */
.post-poll {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--hacker-bg);
    border-radius: var(--border-radius);
    border: none;
    box-shadow: 0 2px 10px var(--hacker-shadow);
}

.poll-header {
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--hacker-green-bright);
    font-size: var(--font-size-base);
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.poll-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.poll-option {
    position: relative;
    padding: var(--spacing-sm);
    background: var(--hacker-bg-dark);
    border: none;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 6px var(--hacker-shadow);
}

.poll-option.clickable {
    cursor: pointer;
}

.poll-option.clickable:hover {
    box-shadow: 0 2px 10px var(--hacker-shadow);
    transform: translateY(-1px);
}

.poll-option.selected {
    background: var(--hacker-bg-light);
    box-shadow: 0 2px 12px var(--hacker-shadow-bright);
}

.poll-option-bar {
    height: 0.5rem;
    background: var(--hacker-bg);
    border: none;
    border-radius: var(--border-radius);
    overflow: hidden;
    margin-bottom: var(--spacing-xs);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.3);
}

.poll-option-fill {
    height: 100%;
    background: var(--hacker-green);
    box-shadow: 0 0 5px var(--hacker-green);
    transition: width 0.3s;
}

/* Search */
.search-box {
    margin-bottom: 0;
}

#search-input {
    width: 100%;
    padding: var(--spacing-md);
    min-height: var(--input-height);
    border: 1px solid var(--hacker-border);
    background: var(--hacker-bg-dark);
    color: var(--hacker-text);
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
    font-size: var(--font-size-base);
    font-family: inherit;
    box-shadow: 0 2px 8px var(--hacker-shadow);
}

#search-input:focus {
    outline: none;
    background: var(--hacker-bg-light);
    box-shadow: 0 0 15px var(--hacker-shadow);
}

/* Notification Modal */
.notification-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--hacker-bg-darker);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.notification-modal-content {
    background: var(--hacker-bg-dark);
    border: none;
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 8px 32px var(--hacker-shadow-bright);
}

.notification-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--hacker-border);
    gap: var(--spacing-md);
}

.notification-modal-header h3 {
    margin: 0;
    color: var(--hacker-green-bright);
    text-shadow: 0 0 10px var(--hacker-green);
    font-size: var(--font-size-lg);
    font-weight: 700;
    line-height: 1.2;
}

.notification-list {
    overflow-y: auto;
    padding: var(--spacing-md);
}

.notification-item {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--hacker-border);
    cursor: pointer;
    transition: all 0.2s;
    font-size: var(--font-size-sm);
    line-height: 1.5;
}

.notification-item:hover {
    background: var(--hacker-bg-light);
    box-shadow: 0 0 5px var(--hacker-shadow);
}

.notification-item.unread {
    background: var(--hacker-bg-light);
    border-left: 3px solid var(--hacker-green);
    font-weight: 500;
}

.notification-content {
    color: var(--hacker-text);
}

.notification-actor {
    color: var(--hacker-text) !important;
    text-shadow: none !important;
}

.notification-text {
    color: var(--hacker-text) !important;
}

.notification-time {
    color: var(--hacker-text-dim) !important;
}

.notification-modal-header h3 {
    color: var(--hacker-text) !important;
    text-shadow: none !important;
}

.notification-modal-header .btn-close {
    color: var(--hacker-text) !important;
}

/* 白天模式下确保文字为黑色 */
[data-theme="light"] .notification-modal-content,
[data-theme="light"] .notification-modal-content * {
    color: var(--hacker-text) !important;
}

[data-theme="light"] .notification-modal-header h3 {
    color: #000000 !important;
    text-shadow: none !important;
}

[data-theme="light"] .notification-modal-header .btn-close {
    color: #000000 !important;
}

[data-theme="light"] .notification-actor {
    color: #000000 !important;
    text-shadow: none !important;
}

[data-theme="light"] .notification-text {
    color: #000000 !important;
}

[data-theme="light"] .notification-time {
    color: #666666 !important;
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --base-font-size: 15px;
    }
    
    .container {
        padding: var(--spacing-md);
        max-width: 100%;
    }
    
    /* 登录和注册页面移动端优化 */
    .auth-box {
        padding: var(--spacing-xl) var(--spacing-lg);
        margin: var(--spacing-lg) auto;
        max-width: 100%;
    }
    
    .auth-box h2 {
        margin-bottom: var(--spacing-xl);
        font-size: var(--font-size-xl);
    }
    
    .form-group {
        margin-bottom: var(--spacing-lg);
    }
    
    .tabs {
        margin-bottom: var(--spacing-lg);
    }
    
    .tab-btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
        margin-right: var(--spacing-sm);
    }
    
    .tab-content {
        padding-top: var(--spacing-md);
    }
    
    .alert {
        padding: var(--spacing-md);
        margin-bottom: var(--spacing-lg);
        margin-top: var(--spacing-md);
        font-size: var(--font-size-sm);
    }
    
    .terms {
        margin: var(--spacing-lg) 0;
        padding: var(--spacing-md) 0;
        font-size: var(--font-size-xs);
    }
    
    .text-center {
        margin-top: var(--spacing-lg);
        padding-top: var(--spacing-md);
        font-size: var(--font-size-sm);
    }
    
    .content-area {
        padding: var(--spacing-md);
    }
    
    .header,
    .header-simple {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
        padding: var(--spacing-md);
    }
    
    .top-bar {
        flex-direction: row;
        padding: var(--spacing-md);
    }
    
    .nav {
        justify-content: center;
        flex-wrap: wrap;
        gap: var(--spacing-xs);
    }
    
    .main-content {
        padding: var(--spacing-lg);
        margin-bottom: var(--spacing-2xl);
    }
    
    .post-composer {
        padding: var(--spacing-md);
    }
    
    .post-composer .composer-actions {
        flex-direction: row;
        align-items: center;
        gap: var(--spacing-sm);
        flex-wrap: wrap;
    }
    
    .composer-tools {
        display: flex;
        flex-wrap: wrap;
        gap: var(--spacing-xs);
        flex: 1;
        min-width: 0;
    }
    
    .composer-tools .btn,
    .composer-tools label {
        flex: 0 0 auto;
        justify-content: center;
        padding: var(--spacing-xs) var(--spacing-sm);
        min-height: 2.25rem;
        font-size: var(--font-size-xs);
        white-space: nowrap;
    }
    
    .composer-tools .count {
        flex-basis: 100%;
        text-align: center;
        padding: var(--spacing-xs) 0;
        order: 10;
    }
    
    .post-composer .composer-actions > .btn-primary {
        flex: 0 0 auto;
        margin-top: 0;
        min-height: 2.25rem;
    }
    
    .post-actions {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: space-around;
    }
    
    .action-btn {
        flex: 1 1 auto;
        min-width: 0;
        justify-content: center;
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .cta-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .cta-buttons .btn {
        width: 100%;
    }
    
    .tabs {
        flex-direction: column;
        border-bottom: none;
        border-left: var(--border-width) solid var(--hacker-border);
    }
    
    .tab-btn {
        text-align: left;
        border-bottom: none;
        border-left: var(--border-width) solid transparent;
        margin-bottom: 0;
        margin-left: calc(var(--border-width) * -1);
    }
    
    .tab-btn.active {
        border-left-color: var(--hacker-green-bright);
        border-bottom-color: transparent;
    }
    
    .welcome-section {
        padding: var(--spacing-xl) var(--spacing-md);
    }
    
    .welcome-section h2 {
        font-size: var(--font-size-2xl);
    }
    
    .bottom-nav-label {
        font-size: 0.6rem;
    }
    
    .bottom-nav-icon {
        font-size: var(--font-size-base);
    }
    
    .bottom-nav-item {
        padding: var(--spacing-xs) 0.25rem;
        min-height: 3rem;
    }
}

@media (max-width: 480px) {
    :root {
        --base-font-size: 14px;
    }
    
    .container {
        padding: var(--spacing-xs);
        max-width: 100%;
    }
    
    .content-area {
        padding: var(--spacing-sm);
    }
    
    .logo {
        font-size: var(--font-size-lg);
    }
    
    /* 登录和注册页面小屏优化 */
    .auth-box {
        padding: var(--spacing-lg) var(--spacing-md);
        margin: var(--spacing-md) auto;
    }
    
    .auth-box h2 {
        font-size: var(--font-size-lg);
        margin-bottom: var(--spacing-lg);
    }
    
    .form-group {
        margin-bottom: var(--spacing-md);
    }
    
    .tab-btn {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-xs);
    }
    
    .btn-sm {
        padding: var(--spacing-xs) var(--spacing-sm);
        min-height: 2rem;
        font-size: var(--font-size-xs);
    }
    
    .welcome-section h2 {
        font-size: var(--font-size-xl);
    }
    
    .welcome-section p {
        font-size: var(--font-size-base);
    }
    
    .post-item {
        padding: var(--spacing-md);
    }
    
    .post-header {
        font-size: var(--font-size-xs);
    }
    
    .post-body {
        font-size: var(--font-size-sm);
    }
    
    .composer-tools {
        gap: var(--spacing-xs);
    }
    
    .composer-tools .btn,
    .composer-tools label {
        font-size: 0.7rem;
        padding: var(--spacing-xs) 0.5rem;
        min-height: 2rem;
        white-space: nowrap;
        flex: 0 0 auto;
    }
    
    .composer-tools .count {
        font-size: var(--font-size-xs);
        flex-basis: 100%;
    }
    
    .post-composer .composer-actions {
        gap: var(--spacing-xs);
    }
    
    .post-composer .composer-actions > .btn-primary {
        font-size: var(--font-size-xs);
        padding: var(--spacing-xs) var(--spacing-sm);
        min-height: 2rem;
    }
    
    .action-btn {
        font-size: var(--font-size-xs);
        padding: var(--spacing-xs) 0.25rem;
        min-width: 2.5rem;
    }
    
    .logo-select-list {
        max-height: 250px;
    }
    
    .logo-select-item {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }
    
    .logo-select-item img,
    .logo-select-item .logo-placeholder {
        width: 20px;
        height: 20px;
    }
}

/* 文本工具类 */
.text-center {
    text-align: center;
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
}

.text-center a {
    color: var(--hacker-green-bright);
    text-decoration: none;
}

.text-center a:hover {
    text-decoration: underline;
    text-shadow: 0 0 5px var(--hacker-green);
}

/* Terms */
.terms {
    margin: var(--spacing-xl) 0;
    padding: var(--spacing-lg) 0;
    border-top: 1px solid var(--hacker-border);
    font-size: var(--font-size-sm);
    line-height: 1.6;
    color: var(--hacker-text-dim);
}

.terms label {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    cursor: pointer;
}

.terms input[type="checkbox"] {
    margin-top: 0.2rem;
    flex-shrink: 0;
}

.terms a {
    color: var(--hacker-green-bright);
    text-decoration: none;
}

.terms a:hover {
    text-decoration: underline;
    text-shadow: 0 0 5px var(--hacker-green);
}

/* 其他组件 */
.btn-close {
    background: none;
    border: none;
    font-size: var(--font-size-lg);
    cursor: pointer;
    color: var(--hacker-text-dim);
    padding: 0;
    width: 1.75rem;
    height: 1.75rem;
    min-width: 1.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    line-height: 1;
}

.btn-close:hover {
    color: var(--hacker-green-bright);
    text-shadow: 0 0 5px var(--hacker-green);
}

#visibility-select {
    background: var(--hacker-bg-dark);
    border: none;
    color: var(--hacker-text);
    border-radius: var(--border-radius);
    padding: var(--spacing-xs) var(--spacing-md);
    min-height: 2rem;
    font-size: var(--font-size-sm);
    cursor: pointer;
    font-family: 'JetBrains Mono', monospace;
    box-shadow: 0 2px 8px var(--hacker-shadow);
}

#visibility-select:focus {
    outline: none;
    background: var(--hacker-bg-light);
    box-shadow: 0 0 10px var(--hacker-shadow);
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--hacker-text-dim);
    border: 2px solid var(--hacker-bg);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--hacker-green);
    box-shadow: 0 0 5px var(--hacker-green);
}

/* 通用输入框样式类 */
.form-group input,
.form-group textarea,
.form-group select,
input.form-group,
textarea.form-group,
select.form-group {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: var(--border-radius);
    background: var(--hacker-bg-dark);
    color: var(--hacker-text);
    font-family: 'JetBrains Mono', monospace;
    font-size: 14px;
    transition: all 0.3s;
    box-shadow: 0 2px 8px var(--hacker-shadow);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus,
input.form-group:focus,
textarea.form-group:focus,
select.form-group:focus {
    outline: none;
    background: var(--hacker-bg-light);
    box-shadow: 0 0 15px var(--hacker-shadow), inset 0 0 5px var(--hacker-shadow);
}

/* 模态框背景 */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--hacker-bg-darker);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--hacker-bg-dark);
    border: none;
    border-radius: var(--border-radius);
    box-shadow: 0 8px 32px var(--hacker-shadow);
    padding: var(--spacing-xl);
    max-width: 500px;
    width: 90%;
}

.modal-content h3 {
    color: var(--hacker-green-bright);
    text-shadow: 0 0 10px var(--hacker-green);
    margin-top: 0;
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-xl);
    font-weight: 700;
    line-height: 1.2;
}

/* 底部导航栏 - APP风格 */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--hacker-bg-dark);
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    border-top: 2px solid var(--hacker-border);
    opacity: 1;
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: var(--spacing-xs) 0;
    box-shadow: 0 -4px 20px var(--hacker-shadow), 0 -2px 10px var(--hacker-shadow-bright);
    z-index: 999;
    backdrop-filter: blur(10px);
    transition: background-color 0.3s, border-color 0.3s;
}

.bottom-nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    text-decoration: none;
    color: var(--hacker-text);
    transition: all 0.3s;
    position: relative;
    border: none;
    background: none;
    cursor: pointer;
    font-family: 'JetBrains Mono', monospace;
    min-height: 3.5rem;
    border-radius: 8px;
    margin: 0 2px;
}

.bottom-nav-item:hover {
    color: var(--hacker-green-bright);
    background: var(--hacker-bg-light);
    opacity: 1;
    text-shadow: 0 0 5px var(--hacker-green);
}

.bottom-nav-item.active {
    color: var(--hacker-green-bright);
    text-shadow: 0 0 8px var(--hacker-green);
    background: var(--hacker-bg-light);
}

.bottom-nav-item.active .bottom-nav-icon {
    transform: scale(1.15);
    filter: drop-shadow(0 0 8px var(--hacker-green));
}

.bottom-nav-item.active .bottom-nav-label {
    font-weight: 700;
    text-shadow: 0 0 5px var(--hacker-green);
}

.bottom-nav-icon {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-xs);
    transition: all 0.3s;
    display: block;
    line-height: 1;
    filter: drop-shadow(0 1px 2px var(--hacker-shadow));
}

.bottom-nav-label {
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05rem;
    line-height: 1.2;
    text-shadow: 0 1px 2px var(--hacker-shadow);
}

/* 当导航项较多时，调整字体大小 */
@media (max-width: 480px) {
    .bottom-nav-label {
        font-size: 0.6rem;
    }
    
    .bottom-nav-icon {
        font-size: var(--font-size-base);
    }
}

.notification-badge {
    position: absolute;
    top: 0.25rem;
    right: 0.5rem;
    background: var(--hacker-green-bright);
    color: var(--hacker-bg);
    font-size: var(--font-size-xs);
    font-weight: 700;
    padding: 0.125rem 0.375rem;
    border-radius: 0.625rem;
    min-width: 1.125rem;
    height: 1.125rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 8px var(--hacker-green);
    line-height: 1;
}

.notification-item {
    position: relative;
}

/* 为底部导航栏留出空间 */
body {
    padding-bottom: 4rem;
}

@media (min-width: 769px) {
    .container {
        max-width: 1400px;
        padding: var(--spacing-xl);
    }
    
    .content-area {
        max-width: 100%;
    }
    
    .bottom-nav {
        max-width: 600px;
        left: 50%;
        transform: translateX(-50%);
        border-left: 2px solid var(--hacker-border);
        border-right: 2px solid var(--hacker-border);
        opacity: 1;
        border-radius: 1rem 1rem 0 0;
        box-shadow: 0 -4px 20px var(--hacker-shadow), 0 -2px 10px var(--hacker-shadow-bright);
    }
}

/* 浮动按钮组 */
.floating-buttons {
    position: fixed;
    bottom: 100px;
    right: 20px;
    z-index: 998;
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: flex-end;
}

.floating-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    border: none;
    background: var(--hacker-bg-dark);
    color: var(--hacker-text);
    cursor: pointer;
    font-size: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px var(--hacker-shadow);
    transition: all 0.3s;
    backdrop-filter: blur(10px);
}

.floating-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 25px var(--hacker-shadow-bright);
    background: var(--hacker-bg-light);
}

.floating-btn:active {
    transform: scale(0.95);
}

/* 应用下载按钮组 */
.floating-button-group {
    position: relative;
}

.download-menu {
    position: absolute;
    bottom: 0;
    right: 70px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateX(20px);
    transition: all 0.3s ease;
    pointer-events: none;
}

.floating-button-group.open .download-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
    pointer-events: all;
}

.download-menu-item {
    padding: 12px 20px;
    min-width: 140px;
    background: var(--hacker-bg-dark);
    color: var(--hacker-text);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-family: 'JetBrains Mono', monospace;
    text-align: left;
    box-shadow: 0 4px 15px var(--hacker-shadow);
    transition: all 0.3s;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 8px;
}

.download-menu-item:hover {
    background: var(--hacker-bg-light);
    transform: translateX(-5px);
    box-shadow: 0 6px 20px var(--hacker-shadow-bright);
}

.download-menu-item:active {
    transform: translateX(-3px) scale(0.98);
}

/* 移动端调整 */
@media (max-width: 768px) {
    .floating-buttons {
        bottom: 90px;
        right: 16px;
        gap: 10px;
    }
    
    .floating-btn {
        width: 50px;
        height: 50px;
        font-size: 20px;
    }
    
    .download-menu {
        right: 60px;
        gap: 6px;
    }
    
    .download-menu-item {
        padding: 10px 16px;
        min-width: 120px;
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    .floating-buttons {
        bottom: 80px;
        right: 12px;
        gap: 8px;
    }
    
    .floating-btn {
        width: 44px;
        height: 44px;
        font-size: 18px;
    }
    
    .download-menu {
        right: 54px;
        gap: 5px;
    }
    
    .download-menu-item {
        padding: 8px 14px;
        min-width: 110px;
        font-size: 12px;
    }
}