/**
 * 拾捌伴 - 全局样式
 * 168g.com
 */

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

:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --success-color: #4caf50;
    --warning-color: #ff9800;
    --danger-color: #f44336;
    --text-primary: #333;
    --text-secondary: #666;
    --bg-light: #f5f5f5;
    --white: #ffffff;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    min-height: 100vh;
    color: var(--text-primary);
}

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

/* 卡片样式 */
.card {
    background: var(--white);
    border-radius: 15px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}

.card-title {
    font-size: 1.3em;
    font-weight: bold;
    margin-bottom: 15px;
    color: var(--text-primary);
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border: none;
    border-radius: 25px;
    font-size: 1em;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

.btn-block {
    display: block;
    width: 100%;
}

/* 输入框样式 */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
}

.form-input {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 1em;
    transition: border-color 0.3s ease;
}

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

textarea.form-input {
    min-height: 100px;
    resize: vertical;
}

select.form-input {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 15px center;
}

/* 导航栏 */
.navbar {
    background: var(--white);
    padding: 15px 20px;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-brand {
    font-size: 1.5em;
    font-weight: bold;
    color: var(--primary-color);
}

.navbar-menu {
    display: flex;
    gap: 20px;
    list-style: none;
}

.navbar-menu a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.navbar-menu a:hover {
    color: var(--primary-color);
}

/* 网格布局 */
.grid {
    display: grid;
    gap: 20px;
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

/* 列表样式 */
.list-item {
    padding: 15px;
    border-bottom: 1px solid #eee;
    transition: background 0.3s ease;
}

.list-item:hover {
    background: var(--bg-light);
}

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

/* 徽章 */
.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.85em;
    font-weight: 500;
}

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

.badge-success {
    background: var(--success-color);
    color: var(--white);
}

.badge-warning {
    background: var(--warning-color);
    color: var(--white);
}

/* 加载动画 */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #e0e0e0;
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.empty-state-icon {
    font-size: 4em;
    margin-bottom: 20px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .grid-2, .grid-3 {
        grid-template-columns: 1fr;
    }
    
    .navbar-menu {
        display: none;
    }
    
    .container {
        padding: 15px;
    }
}

/* 底部导航（移动端） */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
    display: none;
    justify-content: space-around;
    padding: 10px 0;
    z-index: 100;
}

.bottom-nav-item {
    text-align: center;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85em;
}

.bottom-nav-item.active {
    color: var(--primary-color);
}

.bottom-nav-icon {
    font-size: 1.5em;
    display: block;
    margin-bottom: 4px;
}

@media (max-width: 768px) {
    .bottom-nav {
        display: flex;
    }
    
    body {
        padding-bottom: 70px;
    }
}