/* 黑客风格主题 - 默认主题 */
:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --text-primary: #00ff41;
    --text-secondary: #00802b;
    --accent: #00ff41;
    --border: #00802b;
    --hover-bg: #002200;
}

/* 暗绿色主题 */
.theme-green {
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --text-primary: #00ff41;
    --text-secondary: #00802b;
    --accent: #00ff41;
    --border: #00802b;
    --hover-bg: #002200;
}

/* 蓝色主题 */
.theme-blue {
    --bg-primary: #0a0a2a;
    --bg-secondary: #111133;
    --text-primary: #66aaff;
    --text-secondary: #4477cc;
    --accent: #66aaff;
    --border: #4477cc;
    --hover-bg: #001133;
}

/* 紫色主题 */
.theme-purple {
    --bg-primary: #1a0a1a;
    --bg-secondary: #221122;
    --text-primary: #aa66cc;
    --text-secondary: #774499;
    --accent: #aa66cc;
    --border: #774499;
    --hover-bg: #220022;
}

/* 红色主题 */
.theme-red {
    --bg-primary: #2a0a0a;
    --bg-secondary: #331111;
    --text-primary: #ff7777;
    --text-secondary: #cc5555;
    --accent: #ff7777;
    --border: #cc5555;
    --hover-bg: #330000;
}

/* 橙色主题 */
.theme-orange {
    --bg-primary: #2a1f0a;
    --bg-secondary: #332911;
    --text-primary: #ffbb66;
    --text-secondary: #cc8844;
    --accent: #ffbb66;
    --border: #cc8844;
    --hover-bg: #332200;
}

/* 粉色主题 */
.theme-pink {
    --bg-primary: #1a0a1a;
    --bg-secondary: #221122;
    --text-primary: #ff69b4;
    --text-secondary: #cc5a94;
    --accent: #ff69b4;
    --border: #cc5a94;
    --hover-bg: #220022;
}

/* 青色主题 */
.theme-cyan {
    --bg-primary: #0a1a1a;
    --bg-secondary: #112222;
    --text-primary: #00ffff;
    --text-secondary: #00b3b3;
    --accent: #00ffff;
    --border: #00b3b3;
    --hover-bg: #002222;
}

/* 灰色主题 */
.theme-gray {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2a2a2a;
    --text-primary: #d3d3d3;
    --text-secondary: #a9a9a9;
    --accent: #ffffff;
    --border: #808080;
    --hover-bg: #3a3a3a;
}

/* 紫红色主题 */
.theme-purple-red {
    --bg-primary: #1a0a1a;
    --bg-secondary: #2a1a2a;
    --text-primary: #d81b60;
    --text-secondary: #880e4f;
    --accent: #d81b60;
    --border: #880e4f;
    --hover-bg: #3a0a2a;
}

/* 黄色主题 */
.theme-yellow {
    --bg-primary: #1a1a0a;
    --bg-secondary: #2a2a11;
    --text-primary: #ffff00;
    --text-secondary: #cccc00;
    --accent: #ffff00;
    --border: #aaaa00;
    --hover-bg: #3a3a0a;
}

/* 亮绿色主题 */
.theme-bright-green {
    --bg-primary: #0a1a0a;
    --bg-secondary: #112a11;
    --text-primary: #32cd32;
    --text-secondary: #228b22;
    --accent: #32cd32;
    --border: #228b22;
    --hover-bg: #0a3a0a;
}

body {
    font-family: 'Courier New', monospace;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

/* 终端效果动画 */
@keyframes terminal-typing {
    from { width: 0; }
    to { width: 100%; }
}

.terminal-text {
    overflow: hidden;
    white-space: nowrap;
    animation: terminal-typing 3s steps(40, end);
    border-right: 2px solid var(--text-primary);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.header {
    background-color: var(--bg-secondary);
    padding: 15px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8em;
    font-weight: bold;
    color: var(--text-primary);
    text-shadow: 0 0 5px var(--accent);
}

.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-menu li {
    margin-left: 20px;
}

.nav-menu a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 1.1em;
    transition: color 0.3s;
    padding: 8px 12px;
    border-radius: 4px;
}

.nav-menu a:hover {
    color: var(--accent);
    background-color: var(--hover-bg);
}

.login-info {
    color: var(--text-secondary);
    font-size: 0.9em;
}

.btn {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border);
    padding: 10px 20px;
    cursor: pointer;
    font-family: 'Courier New', monospace;
    border-radius: 4px;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
}

.btn:hover {
    background-color: var(--hover-bg);
    color: var(--accent);
    border-color: var(--accent);
    box-shadow: 0 0 8px var(--accent);
}

.btn-primary {
    background-color: var(--text-secondary);
    color: var(--bg-primary);
}

.btn-primary:hover {
    background-color: var(--accent);
    color: var(--bg-primary);
    box-shadow: 0 0 8px var(--accent);
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: var(--text-secondary);
}

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 10px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    color: var(--text-primary);
    font-family: 'Courier New', monospace;
    border-radius: 4px;
    box-sizing: border-box;
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 5px var(--accent);
}

.card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 0 10px rgba(0, 255, 65, 0.1);
}

.message-card {
    background-color: var(--bg-secondary);
    border-left: 4px solid var(--accent);
    padding: 15px;
    margin-bottom: 15px;
    border-radius: 4px;
}

.message-title {
    font-weight: bold;
    color: var(--text-primary);
    margin-bottom: 8px;
    font-size: 1.2em;
}

.message-content {
    color: var(--text-secondary);
    line-height: 1.5;
}

.message-meta {
    font-size: 0.8em;
    color: var(--text-secondary);
    margin-top: 10px;
}

.pagination {
    display: flex;
    justify-content: center;
    margin-top: 20px;
    gap: 10px;
}

.pagination a {
    color: var(--text-primary);
    padding: 8px 15px;
    text-decoration: none;
    border: 1px solid var(--border);
    border-radius: 4px;
    transition: all 0.3s;
}

.pagination a:hover, .pagination a.active {
    background-color: var(--hover-bg);
    color: var(--accent);
    border-color: var(--accent);
    box-shadow: 0 0 5px var(--accent);
}

.table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.table th, .table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    color: var(--text-primary);
}

.table th {
    background-color: var(--hover-bg);
    color: var(--accent);
}

.table tr:hover {
    background-color: var(--bg-secondary);
}

.footer {
    text-align: center;
    padding: 20px;
    margin-top: 40px;
    border-top: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.9em;
}

/* 黑客终端效果 */
.terminal {
    background-color: #000;
    color: #00ff41;
    padding: 20px;
    border-radius: 8px;
    font-family: 'Courier New', monospace;
    margin: 20px 0;
    border: 1px solid #00802b;
    box-shadow: inset 0 0 20px rgba(0, 255, 65, 0.3);
}

.terminal-line {
    margin: 5px 0;
    line-height: 1.4;
}

.cursor {
    display: inline-block;
    width: 8px;
    height: 16px;
    background-color: var(--text-primary);
    animation: blink 1s infinite;
    margin-left: 4px;
    vertical-align: middle;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

/* 终端样式 - 根据主题变化 */
.terminal {
    background-color: #000;
    color: var(--text-primary);
    padding: 20px;
    border-radius: 8px;
    font-family: 'Courier New', monospace;
    margin: 20px 0;
    border: 1px solid var(--border);
    box-shadow: inset 0 0 20px rgba(0, 255, 65, 0.3);
}

.terminal-line {
    margin: 5px 0;
    line-height: 1.4;
    color: var(--text-primary);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        align-items: flex-start;
        padding: 10px;
    }
    
    .nav-menu {
        margin-top: 15px;
        flex-wrap: wrap;
        width: 100%;
        justify-content: center;
    }
    
    .nav-menu li {
        margin: 5px 5px 5px 0;
        flex: 1 0 auto;
    }
    
    .nav-menu a {
        padding: 6px 10px;
        font-size: 0.9em;
        text-align: center;
    }
    
    .container {
        padding: 10px;
    }
    
    .card {
        padding: 15px;
        margin-bottom: 15px;
    }
    
    .logo {
        font-size: 1.5em;
        margin-bottom: 10px;
    }
    
    .login-info {
        font-size: 0.8em;
        margin-top: 10px;
        text-align: center;
        width: 100%;
    }
    
    .btn {
        padding: 8px 15px;
        font-size: 0.9em;
        width: 100%;
        margin-bottom: 10px;
        text-align: center;
    }
    
    .btn-primary {
        width: 100%;
    }
    
    .form-group input, .form-group select, .form-group textarea {
        width: 100%;
        padding: 8px;
    }
    
    .message-card {
        padding: 12px;
    }
    
    .message-title {
        font-size: 1.1em;
    }
    
    .message-content {
        font-size: 0.9em;
    }
    
    .table {
        font-size: 0.8em;
    }
    
    .table th, .table td {
        padding: 8px 5px;
    }
    
    .pagination {
        flex-wrap: wrap;
        gap: 5px;
    }
    
    .pagination a {
        padding: 6px 10px;
        font-size: 0.9em;
    }
    
    .theme-selector {
        flex-direction: column;
        align-items: center;
    }
    
    .theme-toggle-btn {
        width: 100%;
        padding: 8px;
    }
    
    .theme-options-container {
        position: static;
        width: 100%;
        box-shadow: none;
        border: 1px solid var(--border);
        margin-top: 5px;
    }
    
    .theme-btn {
        width: 100%;
        padding: 8px;
        margin-bottom: 5px;
        text-align: center;
    }
    
    .terminal {
        padding: 10px;
        font-size: 0.8em;
    }
    
    h1 {
        font-size: 1.5em;
    }
    
    h2 {
        font-size: 1.3em;
    }
    
    h3 {
        font-size: 1.1em;
    }
    
    /* 购买会员选项的响应式设计 */
    .flex, [style*="display: flex"] {
        flex-direction: column;
    }
    
    [style*="flex: 1; min-width: 300px;"] {
        flex: 1;
        min-width: 100%;
        margin-bottom: 15px;
    }
    
    .messages-container {
        max-height: none;
    }
}

/* 小屏设备优化 */
@media (max-width: 480px) {
    .nav-menu li {
        margin: 3px;
    }
    
    .nav-menu a {
        padding: 5px 8px;
        font-size: 0.8em;
    }
    
    .card {
        padding: 10px;
    }
    
    .message-title {
        font-size: 1em;
    }
    
    .btn {
        padding: 7px 10px;
        font-size: 0.85em;
    }
    
    .form-group input, .form-group select, .form-group textarea {
        padding: 6px;
        font-size: 0.9em;
    }
    
    .table {
        font-size: 0.75em;
        display: block;
        overflow-x: auto;
    }
    
    .pagination a {
        padding: 5px 8px;
        font-size: 0.85em;
    }
    
    .theme-btn {
        padding: 6px;
        font-size: 0.85em;
    }
    
    .terminal {
        font-size: 0.75em;
    }
    
    h1 {
        font-size: 1.3em;
    }
    
    h2 {
        font-size: 1.2em;
    }
    
    h3 {
        font-size: 1.05em;
    }
    
    .logo {
        font-size: 1.3em;
    }
}

/* 风格切换按钮 */
.theme-selector {
    display: flex;
    gap: 10px;
    margin: 15px 0;
    flex-wrap: wrap;
}

.theme-toggle-btn {
    padding: 8px 15px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    color: var(--text-primary);
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.3s;
    font-family: 'Courier New', monospace;
}

.theme-toggle-btn:hover {
    border-color: var(--accent);
    box-shadow: 0 0 5px var(--accent);
}

.theme-options-container {
    position: absolute;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 10px;
    box-shadow: 0 0 10px var(--accent);
    z-index: 1000;
    min-width: 200px;
}

.theme-btn {
    padding: 8px 15px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    color: var(--text-primary);
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.3s;
    font-family: 'Courier New', monospace;
    display: block;
    width: 100%;
    margin-bottom: 5px;
    text-align: left;
}

.theme-btn:hover {
    border-color: var(--accent);
    box-shadow: 0 0 5px var(--accent);
}

.theme-btn.active {
    background-color: var(--text-secondary);
    color: var(--bg-primary);
    border-color: var(--accent);
}

/* 消息闪烁效果 */
.message-flash {
    animation: flash 0.5s;
}

@keyframes flash {
    0% { background-color: var(--bg-secondary); }
    50% { background-color: var(--accent); }
    100% { background-color: var(--bg-secondary); }
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--bg-secondary);
    border-radius: 50%;
    border-top-color: var(--accent);
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
}

.modal-content {
    background-color: var(--bg-secondary);
    margin: 15% auto;
    padding: 20px;
    border: 1px solid var(--border);
    border-radius: 8px;
    width: 80%;
    max-width: 500px;
    box-shadow: 0 0 20px var(--accent);
}

.close {
    color: var(--text-primary);
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

.close:hover {
    color: var(--accent);
}

/* 表单验证错误样式 */
.error {
    color: #ff5555;
    font-size: 0.9em;
    margin-top: 5px;
}

.form-group.error input, .form-group.error select, .form-group.error textarea {
    border-color: #ff5555;
    box-shadow: 0 0 5px rgba(255, 85, 85, 0.5);
}