/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary-color: #ec4899;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --bg-dark: #0f172a;
    --bg-light: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --card-bg: rgba(30, 41, 59, 0.8);
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 
                'Microsoft YaHei', sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* 背景动画 */
.background-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    background: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
}

.floating-shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
    animation: float 20s infinite ease-in-out;
}

.floating-shape:nth-child(1) {
    width: 300px;
    height: 300px;
    background: var(--gradient-1);
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.floating-shape:nth-child(2) {
    width: 200px;
    height: 200px;
    background: var(--gradient-2);
    top: 60%;
    right: 10%;
    animation-delay: -5s;
}

.floating-shape:nth-child(3) {
    width: 250px;
    height: 250px;
    background: var(--gradient-3);
    bottom: 20%;
    left: 50%;
    animation-delay: -10s;
}

.floating-shape:nth-child(4) {
    width: 150px;
    height: 150px;
    background: var(--gradient-1);
    top: 40%;
    right: 30%;
    animation-delay: -15s;
}

.floating-shape:nth-child(5) {
    width: 180px;
    height: 180px;
    background: var(--gradient-2);
    bottom: 30%;
    left: 20%;
    animation-delay: -7s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    25% {
        transform: translateY(-50px) rotate(90deg);
    }
    50% {
        transform: translateY(-100px) rotate(180deg);
    }
    75% {
        transform: translateY(-50px) rotate(270deg);
    }
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    padding: 1rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-img {
    height: 50px;
    width: auto;
    transition: transform 0.3s ease;
    filter: brightness(1.2) contrast(1.1);
}

.logo-img:hover {
    transform: scale(1.08);
    filter: brightness(1.3) contrast(1.2);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-1);
    transition: width 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.main-content {
    margin-top: 80px;
}

/* Hero Section */
.hero-section {
    min-height: calc(100vh - 80px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 0;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.title-highlight {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    opacity: 0.9;
}

/* 搜索卡片 */
.search-card {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 2.5rem;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

.search-card:hover {
    box-shadow: 0 30px 80px rgba(99, 102, 241, 0.2);
    transform: translateY(-2px);
}

.search-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.search-header i {
    color: var(--primary-color);
    font-size: 1.3rem;
}

.search-input-wrapper {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.phone-input {
    flex: 1;
    padding: 1.25rem 1.5rem;
    background: rgba(15, 23, 42, 0.6);
    border: 2px solid var(--border-color);
    border-radius: 16px;
    color: var(--text-primary);
    font-size: 1.1rem;
    transition: all 0.3s ease;
    letter-spacing: 2px;
}

.phone-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.phone-input::placeholder {
    color: var(--text-muted);
    letter-spacing: normal;
}

.search-btn {
    padding: 1.25rem 2.5rem;
    background: var(--gradient-1);
    border: none;
    border-radius: 16px;
    color: white;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.search-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.6);
}

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

.input-hint {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* 快速示例 */
.quick-examples {
    margin-top: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.examples-label {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.example-numbers {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.example-btn {
    padding: 0.6rem 1.2rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 12px;
    color: var(--primary-light);
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.example-btn:hover {
    background: rgba(99, 102, 241, 0.2);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

/* 统计数据 */
.stats-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 4rem;
}

.stat-item {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    transition: all 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.2);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 16px;
    background: var(--gradient-1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: white;
}

.stat-content {
    flex: 1;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* 结果区域 */
.result-section {
    min-height: calc(100vh - 80px);
    padding: 4rem 0;
}

.result-card {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 2.5rem;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.back-btn,
.share-btn {
    padding: 0.75rem 1.5rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 12px;
    color: var(--primary-light);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.back-btn:hover,
.share-btn:hover {
    background: rgba(99, 102, 241, 0.2);
    transform: translateY(-2px);
}

.result-title {
    font-size: 1.8rem;
    font-weight: 700;
}

/* 加载动画 */
.loading-wrapper {
    text-align: center;
    padding: 4rem 2rem;
}

.loading-spinner {
    margin-bottom: 1.5rem;
}

.spinner {
    width: 60px;
    height: 60px;
    margin: 0 auto;
    border: 4px solid rgba(99, 102, 241, 0.1);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-text {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* 结果数据 */
.result-data {
    animation: fadeIn 0.5s ease;
}

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

.phone-display {
    text-align: center;
    padding: 2rem;
    background: rgba(99, 102, 241, 0.05);
    border-radius: 20px;
    margin-bottom: 2rem;
}

.phone-number {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: 3px;
    margin-bottom: 0.5rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.phone-carrier {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.price-display {
    text-align: center;
    padding: 3rem 2rem;
    background: var(--gradient-1);
    border-radius: 20px;
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}

.price-display::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.5;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

.price-label {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1rem;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.price-value {
    font-size: 3.5rem;
    font-weight: 800;
    color: white;
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.price-trend {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.detail-info {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.detail-item {
    background: rgba(99, 102, 241, 0.05);
    padding: 1.5rem;
    border-radius: 16px;
    border: 1px solid rgba(99, 102, 241, 0.1);
}

.detail-label {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.detail-value {
    color: var(--text-primary);
    font-size: 1.2rem;
    font-weight: 600;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.feature-tag {
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    padding: 1rem 1.5rem;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s ease;
}

.feature-tag:hover {
    background: rgba(99, 102, 241, 0.2);
    transform: translateY(-2px);
}

.feature-tag i {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    display: block;
}

.feature-tag .tag-label {
    color: var(--text-primary);
    font-weight: 600;
}

.action-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.action-btn {
    flex: 1;
    padding: 1.25rem 2rem;
    border: none;
    border-radius: 16px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.primary-btn {
    background: var(--gradient-1);
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.6);
}

.secondary-btn {
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    color: var(--primary-light);
}

.secondary-btn:hover {
    background: rgba(99, 102, 241, 0.2);
    transform: translateY(-2px);
}

/* 错误消息 */
.error-message {
    text-align: center;
    padding: 3rem 2rem;
}

.error-message i {
    font-size: 4rem;
    color: var(--error-color);
    margin-bottom: 1rem;
}

.error-message p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
}

.retry-btn {
    padding: 1rem 2rem;
    background: var(--gradient-1);
    border: none;
    border-radius: 12px;
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.retry-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

/* 特色功能区 */
.features-section {
    padding: 6rem 0;
    background: rgba(15, 23, 42, 0.5);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
}

.features-grid-layout {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2.5rem;
    text-align: center;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(99, 102, 241, 0.3);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    border-radius: 20px;
    background: var(--gradient-1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
}

.feature-card:nth-child(2) .feature-icon {
    background: var(--gradient-2);
}

.feature-card:nth-child(3) .feature-icon {
    background: var(--gradient-3);
}

.feature-card:nth-child(4) .feature-icon {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}

.feature-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.feature-desc {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 历史记录 */
.history-section {
    padding: 6rem 0;
}

.history-list {
    max-width: 800px;
    margin: 0 auto;
}

.empty-history {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-muted);
}

.empty-history i {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.history-item {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.history-item:hover {
    transform: translateX(10px);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.2);
}

.history-item-info {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.history-item-phone {
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 2px;
}

.history-item-price {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-light);
}

/* 页脚 */
.footer {
    background: rgba(15, 23, 42, 0.5);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    margin-top: 4rem;
}

.footer-bottom {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Toast 提示 */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    transform: translateX(400px);
    transition: transform 0.3s ease;
    z-index: 2000;
}

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

.toast i {
    color: var(--success-color);
    font-size: 1.2rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .search-card {
        padding: 1.5rem;
    }

    .search-input-wrapper {
        flex-direction: column;
    }

    .stats-container {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .nav-links {
        display: none;
    }

    .detail-info {
        grid-template-columns: 1fr;
    }

    .action-buttons {
        flex-direction: column;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .phone-number {
        font-size: 2rem;
    }

    .price-value {
        font-size: 2.5rem;
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* 动画增强 */
.fade-in {
    animation: fadeIn 0.5s ease;
}

.slide-up {
    animation: slideUp 0.5s ease;
}

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