/* 26YC贸易导航平台 - 全局样式 */

/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 根元素样式 */
:root {
    --primary-color: #165DFF;
    --secondary-color: #36BFFA;
    --accent-color: #FF7D00;
    --success-color: #00B42A;
    --warning-color: #FF7D00;
    --error-color: #F53F3F;
    --dark-color: #1D2129;
    --light-color: #F2F3F5;
    --gray-50: #F7F8FA;
    --gray-100: #F2F3F5;
    --gray-200: #E5E6EB;
    --gray-300: #C9CDD4;
    --gray-400: #86909C;
    --gray-500: #4E5969;
    --gray-600: #272E3F;
    --gray-700: #1D2129;
    
    --font-family: 'Inter', 'system-ui', 'sans-serif';
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* 基础字体和布局 */
body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--gray-700);
    background-color: var(--gray-50);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 容器样式 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

@media (min-width: 640px) {
    .container {
        padding: 0 1.5rem;
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 2rem;
    }
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--border-radius);
    border: none;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    text-decoration: none;
    white-space: nowrap;
}

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

.btn-primary:hover {
    background-color: #1347CC;
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
    background-color: #2B9FE8;
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

/* 卡片样式 */
.card {
    background-color: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    transition: all 0.3s ease;
}

.card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
}

.card-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--gray-200);
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--gray-200);
    background-color: var(--gray-50);
    border-radius: 0 0 var(--border-radius-lg) var(--border-radius-lg);
}

/* 表单样式 */
.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    transition: all 0.2s ease;
    background-color: white;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(22, 93, 255, 0.1);
}

.form-input::placeholder {
    color: var(--gray-400);
}

/* 导航样式 */
.nav-link {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    color: var(--gray-600);
    text-decoration: none;
    font-weight: 500;
    border-radius: var(--border-radius);
    transition: all 0.2s ease;
}

.nav-link:hover {
    color: var(--primary-color);
    background-color: rgba(22, 93, 255, 0.1);
}

.nav-link.active {
    color: var(--primary-color);
    background-color: rgba(22, 93, 255, 0.1);
}

/* 徽章样式 */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 9999px;
    white-space: nowrap;
}

.badge-primary {
    background-color: rgba(22, 93, 255, 0.1);
    color: var(--primary-color);
}

.badge-success {
    background-color: rgba(0, 180, 42, 0.1);
    color: var(--success-color);
}

.badge-warning {
    background-color: rgba(255, 125, 0, 0.1);
    color: var(--warning-color);
}

/* 工具提示 */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--dark-color);
    color: white;
    padding: 0.5rem 0.75rem;
    border-radius: var(--border-radius);
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
    z-index: 1000;
}

.tooltip:hover::after {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(-4px);
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--gray-200);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

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

/* 渐变背景 */
.gradient-bg {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 50%, var(--success-color) 100%);
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 响应式工具类 */
.hide-mobile {
    display: block;
}

.show-mobile {
    display: none;
}

@media (max-width: 768px) {
    .hide-mobile {
        display: none;
    }
    
    .show-mobile {
        display: block;
    }
}

/* 滚动条样式 */
.custom-scrollbar::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

.custom-scrollbar::-webkit-scrollbar-track {
    background: var(--gray-100);
    border-radius: 3px;
}

.custom-scrollbar::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: 3px;
}

.custom-scrollbar::-webkit-scrollbar-thumb:hover {
    background: var(--gray-400);
}

/* 动画效果 */
.fade-in {
    animation: fadeIn 0.6s ease-out;
}

.slide-up {
    animation: slideUp 0.6s ease-out;
}

.bounce-gentle {
    animation: bounceGentle 2s infinite;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounceGentle {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* 浮动元素 */
.floating {
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* 脉冲效果 */
.pulse-ring {
    animation: pulse-ring 2s cubic-bezier(0.455, 0.03, 0.515, 0.955) infinite;
}

@keyframes pulse-ring {
    0% {
        transform: scale(0.8);
        opacity: 1;
    }
    80%, 100% {
        transform: scale(1.2);
        opacity: 0;
    }
}

/* 玻璃效果 */
.glass-effect {
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* 返回顶部按钮样式 */
#back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-xl);
    transition: all 0.3s ease;
    opacity: 0;
    visibility: hidden;
    z-index: 1000;
}

#back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

#back-to-top:hover {
    background-color: #1347CC;
    transform: scale(1.1);
}

/* 通知样式 */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 12px 20px;
    border-radius: 8px;
    color: white;
    font-weight: 500;
    z-index: 10000;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    box-shadow: var(--shadow-lg);
}

.notification.show {
    transform: translateX(0);
}

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

.notification-error {
    background-color: var(--error-color);
}

.notification-info {
    background-color: var(--primary-color);
}

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

/* 移动端菜单样式 */
.mobile-menu-open {
    transform: translateY(0) !important;
    opacity: 1 !important;
    visibility: visible !important;
}

/* 搜索结果模态框样式 */
.search-results-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
}

.search-results-modal .modal-content {
    background: white;
    border-radius: 12px;
    padding: 24px;
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
}

.search-results-modal .search-result-item {
    display: block;
    padding: 12px;
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    margin-bottom: 8px;
    text-decoration: none;
    color: var(--gray-700);
    transition: all 0.2s;
}

.search-results-modal .search-result-item:hover {
    background-color: var(--gray-50);
    border-color: var(--primary-color);
}

/* 收藏按钮样式 */
.favorite-btn {
    transition: all 0.2s ease;
}

.favorite-btn.favorited {
    color: var(--error-color);
}

.favorite-btn:hover {
    transform: scale(1.1);
}

/* 加载状态样式 */
.loaded {
    opacity: 1;
}

body:not(.loaded) {
    opacity: 0;
    transition: opacity 0.3s ease;
}

/* 打印样式 */
@media print {
    .no-print {
        display: none !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
    
    .card {
        box-shadow: none !important;
        border: 1px solid #ccc !important;
    }
}