/* Material 3 + 莫兰迪色系通用样式 */

:root {
    /* 莫兰迪色系 */
    --morandi-sage: #9caf88;
    --morandi-dusty-blue: #8b9cb5;
    --morandi-soft-pink: #c4a29e;
    --morandi-warm-gray: #a8988e;
    --morandi-muted-green: #7a9b84;
    --morandi-lavender: #9e9bb4;
    --morandi-terracotta: #b88a7d;
    --morandi-cream: #d4cec3;

    /* Material 3 基础色 */
    --md-primary: var(--morandi-dusty-blue);
    --md-primary-container: #d0dae8;
    --md-on-primary: #ffffff;
    --md-on-primary-container: #2e3842;

    --md-secondary: var(--morandi-sage);
    --md-secondary-container: #dae8d0;
    --md-on-secondary: #ffffff;
    --md-on-secondary-container: #2e3a28;

    --md-tertiary: var(--morandi-soft-pink);
    --md-tertiary-container: #edddd8;
    --md-on-tertiary: #ffffff;
    --md-on-tertiary-container: #3d3330;

    --md-surface: #f8f9fa;
    --md-surface-variant: #e8e9eb;
    --md-on-surface: #1c1c1e;
    --md-on-surface-variant: #44464e;

    --md-background: #fafbfc;
    --md-on-background: #1c1c1e;

    --md-error: #b3261e;
    --md-on-error: #ffffff;

    /* 阴影 */
    --md-shadow-1: 0 1px 2px rgba(0, 0, 0, 0.06);
    --md-shadow-2: 0 2px 8px rgba(0, 0, 0, 0.08);
    --md-shadow-3: 0 4px 16px rgba(0, 0, 0, 0.1);
    --md-shadow-4: 0 8px 24px rgba(0, 0, 0, 0.12);

    /* 圆角 */
    --md-radius-xs: 4px;
    --md-radius-sm: 8px;
    --md-radius-md: 12px;
    --md-radius-lg: 16px;
    --md-radius-xl: 28px;

    /* 间距 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;

    /* 过渡 */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
    background-color: var(--md-background);
    color: var(--md-on-background);
    line-height: 1.6;
}

/* 导航栏 */
.navbar {
    background-color: var(--md-surface);
    box-shadow: var(--md-shadow-2);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--md-primary);
}

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

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

.user-info span {
    color: var(--md-on-surface-variant);
    font-weight: 500;
}

/* 按钮 */
.btn-primary,
.btn-secondary,
.btn-text {
    padding: 10px 24px;
    border: none;
    border-radius: var(--md-radius-xl);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
    font-family: inherit;
}

.btn-primary {
    background-color: var(--md-primary);
    color: var(--md-on-primary);
    box-shadow: var(--md-shadow-1);
}

.btn-primary:hover {
    background-color: #7a8da8;
    box-shadow: var(--md-shadow-2);
}

.btn-secondary {
    background-color: var(--md-secondary);
    color: var(--md-on-secondary);
}

.btn-secondary:hover {
    background-color: #8a9f7c;
}

.btn-text {
    background-color: transparent;
    color: var(--md-primary);
    padding: 8px 16px;
}

.btn-text:hover {
    background-color: rgba(139, 156, 181, 0.08);
}

.btn-full {
    width: 100%;
}

/* 模态框 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 1;
    transition: opacity var(--transition-normal);
}

.modal.hidden {
    display: none;
    opacity: 0;
}

.modal-content {
    background-color: var(--md-surface);
    border-radius: var(--md-radius-lg);
    box-shadow: var(--md-shadow-4);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-large {
    max-width: 800px;
}

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

.modal-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--md-on-surface);
}

.close-btn {
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--md-on-surface-variant);
    cursor: pointer;
    line-height: 1;
    padding: 0;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    transition: background-color var(--transition-fast);
}

.close-btn:hover {
    background-color: var(--md-surface-variant);
}

.modal-body {
    padding: var(--spacing-lg);
}

/* 表单 */
.input-field {
    margin-bottom: var(--spacing-lg);
}

.input-field label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--md-on-surface);
    font-weight: 500;
    font-size: 0.9rem;
}

.input-field input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--md-surface-variant);
    border-radius: var(--md-radius-sm);
    font-size: 1rem;
    font-family: inherit;
    background-color: var(--md-surface);
    color: var(--md-on-surface);
    transition: border-color var(--transition-fast);
}

.input-field input:focus {
    outline: none;
    border-color: var(--md-primary);
    box-shadow: 0 0 0 2px rgba(139, 156, 181, 0.2);
}

/* 错误消息 */
.error-message {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: rgba(179, 38, 30, 0.1);
    color: var(--md-error);
    border-radius: var(--md-radius-sm);
    margin-bottom: var(--spacing-md);
    font-size: 0.9rem;
}

.error-message.hidden {
    display: none;
}

/* 工具类 */
.hidden {
    display: none !important;
}

.loading {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--md-on-surface-variant);
}

/* 响应式 */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .modal-content {
        width: 95%;
        margin: var(--spacing-md);
    }
}