/* CSS 变量 */
:root {
    --primary: #4a90d9;
    --primary-hover: #357abd;
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-card: #1e2a45;
    --bg-input: #0f1b33;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --border-color: #2a3a5c;
    --success: #4caf50;
    --danger: #f44336;
    --warning: #ff9800;
    --sidebar-width: 260px;
    --toolbar-height: 50px;
    --input-height: 120px;
    --radius: 8px;
    --font-family: system-ui, -apple-system, sans-serif;
}

/* Reset */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* 登录页样式 */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.login-card {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 48px 40px;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.3);
    border: 1px solid var(--border-color);
}

.login-logo {
    text-align: center;
    margin-bottom: 36px;
}

.login-logo .logo-icon {
    width: 48px;
    height: 48px;
    color: var(--primary);
    margin-bottom: 12px;
}

.login-logo h1 {
    font-size: 24px;
    color: var(--primary);
    font-weight: 600;
    letter-spacing: 0.5px;
}

/* 安装向导样式 */
.install-container {
    max-width: 700px;
    margin: 40px auto;
    padding: 0 20px;
}

.install-container h1 svg {
    color: var(--primary);
}

.step-indicator {
    display: flex;
    justify-content: space-between;
    margin-bottom: 30px;
    padding: 0;
    list-style: none;
}

.step-indicator .step {
    flex: 1;
    text-align: center;
    padding: 10px;
    font-size: 14px;
    color: var(--text-secondary);
    border-bottom: 3px solid var(--border-color);
    transition: all 0.3s;
}

.step-indicator .step.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.step-indicator .step.completed {
    color: var(--success);
    border-bottom-color: var(--success);
}

/* 通用表单样式 */
.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 0.3px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 14px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    line-height: 1.4;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(74, 144, 217, 0.3);
}

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

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-danger:hover {
    opacity: 0.9;
}

.btn-sm {
    padding: 6px 14px;
    font-size: 12px;
}

.btn-block {
    display: flex;
    width: 100%;
    text-align: center;
}

.btn-group {
    display: flex;
    gap: 10px;
    margin-top: 24px;
    justify-content: flex-end;
}

/* 消息提示 */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius);
    margin-bottom: 16px;
    font-size: 14px;
    line-height: 1.5;
}

.alert-error {
    background: rgba(244, 67, 54, 0.1);
    border: 1px solid var(--danger);
    color: var(--danger);
}

.alert-success {
    background: rgba(76, 175, 80, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
}

/* 配置页样式 */
.config-container {
    max-width: 900px;
    margin: 40px auto;
    padding: 0 20px;
}

.config-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.config-header h1 {
    display: flex;
    align-items: center;
    font-size: 22px;
    font-weight: 600;
}

.config-header h1 svg {
    color: var(--primary);
}

.config-section {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 28px;
    margin-bottom: 24px;
    border: 1px solid var(--border-color);
}

.config-section h2 {
    margin-bottom: 20px;
    font-size: 17px;
    font-weight: 600;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

/* 响应式 */
@media (max-width: 768px) {
    .login-card {
        padding: 24px;
    }
    .install-container,
    .config-container {
        margin: 20px auto;
    }
}