/* 通用重置与基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

body {
    background: #0a0a10;
    color: #e0e0e0;
    min-height: 100vh;
    background-image: 
        radial-gradient(circle at 20% 20%, rgba(0, 123, 255, 0.1) 0%, transparent 20%),
        radial-gradient(circle at 80% 80%, rgba(0, 255, 255, 0.1) 0%, transparent 20%);
}

/* 通用容器样式 */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 卡片容器（登录/注册/审核面板通用） */
.tech-card {
    background: rgba(18, 18, 28, 0.85);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 150, 255, 0.2);
    border-radius: 12px;
    box-shadow: 
        0 0 20px rgba(0, 123, 255, 0.1),
        inset 0 0 10px rgba(0, 255, 255, 0.05);
}

/* 表单通用样式 */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    color: #a0a8c0;
    font-size: 13px;
    margin-bottom: 8px;
    padding-left: 4px;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    background: rgba(25, 25, 35, 0.8);
    border: 1px solid rgba(0, 150, 255, 0.3);
    border-radius: 8px;
    color: #ffffff;
    font-size: 14px;
    transition: all 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: #00ccff;
    box-shadow: 0 0 10px rgba(0, 200, 255, 0.2);
    background: rgba(30, 30, 40, 0.9);
}

.form-control::placeholder {
    color: #556080;
}

/* 按钮通用样式 */
.tech-btn {
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tech-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 0 20px rgba(0, 200, 255, 0.3);
}

/* 按钮主题变体 */
.btn-primary {
    background: linear-gradient(135deg, #0099ff, #00ccff);
    color: #ffffff;
    box-shadow: 0 0 15px rgba(0, 200, 255, 0.2);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #0088ff, #00bbff);
}

.btn-success {
    background: linear-gradient(135deg, #00cc66, #00ff9d);
    color: #ffffff;
    box-shadow: 0 0 15px rgba(0, 255, 127, 0.2);
}

.btn-success:hover {
    background: linear-gradient(135deg, #00bb55, #00ee88);
}

.btn-danger {
    background: linear-gradient(135deg, #ff3300, #ff6b6b);
    color: #ffffff;
    box-shadow: 0 0 15px rgba(255, 69, 0, 0.2);
}

.btn-danger:hover {
    background: linear-gradient(135deg, #ff2200, #ff5a5a);
}

.btn-warning {
    background: linear-gradient(135deg, #ff6600, #ff8800);
    color: #ffffff;
    box-shadow: 0 0 15px rgba(255, 100, 0, 0.2);
}

.btn-warning:hover {
    background: linear-gradient(135deg, #ff5500, #ff7700);
}

/* 提示消息通用样式 */
.alert {
    padding: 12px;
    border-radius: 8px;
    font-size: 14px;
    text-align: center;
    margin-bottom: 20px;
}

.alert-error {
    background: rgba(255, 69, 0, 0.1);
    border: 1px solid rgba(255, 100, 0, 0.3);
    color: #ff6b6b;
}

.alert-success {
    background: rgba(0, 255, 127, 0.1);
    border: 1px solid rgba(0, 255, 127, 0.3);
    color: #00ff9d;
}

/* 链接通用样式 */
.tech-link {
    color: #00ccff;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s ease;
}

.tech-link:hover {
    color: #00ffff;
    text-shadow: 0 0 10px rgba(0, 255, 255, 0.3);
}

/* 表格通用样式 */
.tech-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.tech-table th {
    padding: 15px;
    text-align: left;
    color: #00ccff;
    font-size: 14px;
    font-weight: 500;
    border-bottom: 1px solid rgba(0, 150, 255, 0.3);
}

.tech-table td {
    padding: 15px;
    color: #a0a8c0;
    font-size: 14px;
    border-bottom: 1px solid rgba(0, 150, 255, 0.1);
    transition: all 0.2s ease;
}

.tech-table tr:hover td {
    background: rgba(0, 150, 255, 0.05);
    color: #ffffff;
}

/* 状态标签通用样式 */
.status-pending { color: #ffff00; font-weight: 500; }
.status-pass { color: #00ff9d; font-weight: 500; }
.status-reject { color: #ff6b6b; font-weight: 500; }

/* 侧边栏通用样式 */
.sidebar {
    width: 260px;
    background: rgba(18, 18, 28, 0.9);
    backdrop-filter: blur(10px);
    border-right: 1px solid rgba(0, 150, 255, 0.2);
    padding: 30px 0;
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    padding: 0 30px 20px;
    border-bottom: 1px solid rgba(0, 150, 255, 0.1);
    margin-bottom: 20px;
}

.sidebar-header h3 {
    color: #00ccff;
    font-size: 18px;
    letter-spacing: 1px;
    text-shadow: 0 0 8px rgba(0, 200, 255, 0.2);
}

.menu-list {
    flex: 1;
    padding: 10px 0;
}

.menu-item {
    display: block;
    padding: 12px 30px;
    color: #a0a8c0;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.menu-item:hover {
    background: rgba(0, 150, 255, 0.1);
    color: #00ccff;
    border-left-color: #00ccff;
}

.menu-item.active {
    background: rgba(0, 150, 255, 0.15);
    color: #00ffff;
    border-left-color: #00ffff;
    box-shadow: inset 0 0 10px rgba(0, 200, 255, 0.1);
}

/* 响应式基础样式 */
@media (max-width: 768px) {
    .sidebar {
        width: 80px;
        padding: 20px 0;
    }
    .sidebar-header h3, .menu-item span {
        display: none;
    }
    .menu-item {
        padding: 15px;
        text-align: center;
    }
}