/**
 * AI家教平台样式文件
 */

/* 全局样式 */
:root {
    --primary-color: #07C160;
    --secondary-color: #10D56A;
    --success-color: #3cba92;
    --warning-color: #f6d365;
    --danger-color: #f5576c;
    --info-color: #5ee7df;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    
    --gradient-primary: linear-gradient(135deg, #07C160 0%, #10D56A 100%);
    --gradient-secondary: linear-gradient(135deg, #10D56A 0%, #07C160 100%);
    --gradient-success: linear-gradient(135deg, #0ba360 0%, #3cba92 100%);
    --gradient-warning: linear-gradient(135deg, #f6d365 0%, #fda085 100%);
    --gradient-danger: linear-gradient(135deg, #f5576c 0%, #f093fb 100%);
    --gradient-info: linear-gradient(135deg, #5ee7df 0%, #b490ca 100%);
    
    --border-radius: 1rem;
    --box-shadow: 0 5px 15px rgba(7, 193, 96, 0.08);
    --box-shadow-lg: 0 15px 35px rgba(7, 193, 96, 0.15);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background: linear-gradient(135deg, #f0faf5 0%, #e6f7ef 100%);
}

/* 导航栏样式 */
.navbar {
    box-shadow: var(--box-shadow-lg);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
}

.navbar-brand {
    font-weight: 800;
    font-size: 1.6rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* 主要内容区域 */
.main-content {
    margin-top: 76px; /* 导航栏高度 */
    min-height: calc(100vh - 76px);
}

/* 英雄区域 */
.hero-section {
    background: var(--gradient-primary);
    min-height: 600px;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding: 3rem 0;
}

.bg-gradient-primary {
    background: var(--gradient-primary) !important;
}

/* 特色功能卡片 */
.feature-card {
    background: #e6f7ef;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: all 0.4s ease;
    border: none;
    padding: 2rem;
    position: relative;
    overflow: hidden;
    z-index: 1;
    border-bottom: 3px solid transparent;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.5) 100%);
    z-index: -1;
    opacity: 0;
    transition: all 0.4s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--box-shadow-lg);
    border-bottom-color: #07C160;
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon {
    height: 90px;
    width: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    border-radius: 50%;
    position: relative;
}

.feature-icon::after {
    content: '';
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    background: linear-gradient(135deg, rgba(7, 193, 96, 0.1) 0%, rgba(16, 213, 106, 0.1) 100%);
    border-radius: 50%;
    z-index: -1;
    animation: pulse 2s infinite;
}

/* 智能体卡片 */
.agent-card {
    transition: all 0.4s ease;
    border: none;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    position: relative;
    z-index: 1;
    background: #e6f7ef;
    border-bottom: 3px solid transparent;
}

.agent-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.5) 100%);
    z-index: -1;
    opacity: 0;
    transition: all 0.4s ease;
}

.agent-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--box-shadow-lg);
    border-bottom-color: #07C160;
}

.agent-card:hover::before {
    opacity: 1;
}

.agent-card .card-body {
    padding: 1.75rem;
}

/* 对话界面样式 */
.chat-container {
    height: calc(100vh - 200px);
    display: flex;
    flex-direction: column;
    background: linear-gradient(135deg, #f0faf5 0%, #e6f7ef 100%);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
    background: rgba(240, 250, 245, 0.8);
    backdrop-filter: blur(10px);
}

.message {
    margin-bottom: 1.5rem;
    display: flex;
    align-items: flex-start;
}

.message.user {
    justify-content: flex-end;
}

.message.assistant {
    justify-content: flex-start;
}

.message-content {
    max-width: 70%;
    padding: 1rem 1.25rem;
    border-radius: var(--border-radius);
    position: relative;
    box-shadow: var(--box-shadow);
    animation: fadeIn 0.3s ease-out;
}

.message.user .message-content {
    background: var(--gradient-primary);
    color: white;
    margin-left: 1rem;
}

.message.assistant .message-content {
    background: #e6f7ef;
    color: var(--dark-color);
    margin-right: 1rem;
    border-left: 4px solid var(--primary-color);
}

.message-avatar {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: var(--box-shadow);
    border: 2px solid white;
}

.message-time {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.8);
    margin-top: 0.5rem;
    font-weight: 500;
}

.message.assistant .message-time {
    color: var(--primary-color);
}

/* 输入区域 */
.chat-input {
    background: white;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    padding: 1.25rem;
}

.input-group {
    box-shadow: var(--box-shadow);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.form-control {
    border: 1px solid rgba(7, 193, 96, 0.1);
    padding: 0.75rem 1rem;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(7, 193, 96, 0.25);
}

.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(7, 193, 96, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
    margin-right: 10px;
}

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

.typing-indicator {
    display: flex;
    align-items: center;
    padding: 0.5rem 1rem;
    background: rgba(7, 193, 96, 0.1);
    border-radius: 1rem;
    margin-bottom: 1rem;
    width: fit-content;
}

.typing-dots {
    display: flex;
    align-items: center;
    gap: 4px;
}

.typing-dot {
    width: 8px;
    height: 8px;
    background-color: var(--primary-color);
    border-radius: 50%;
    opacity: 0.6;
    animation: typing 1.4s infinite both;
}

.typing-dot:nth-child(1) { animation-delay: -0.32s; }
.typing-dot:nth-child(2) { animation-delay: -0.16s; }

@keyframes typing {
    0%, 80%, 100% { transform: scale(0.6); }
    40% { transform: scale(1); }
}

.vip-badge {
    background: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
    color: #fff;
    font-weight: 700;
    font-size: 0.7rem;
    padding: 0.25rem 0.5rem;
    border-radius: 0.5rem;
    box-shadow: 0 2px 5px rgba(255, 165, 0, 0.3);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .main-content {
        margin-top: 66px;
        min-height: calc(100vh - 66px);
    }
    
    .hero-section {
        min-height: 450px;
        padding: 2rem 0;
    }
    
    .hero-section .display-4 {
        font-size: 2.5rem;
    }
    
    .message-content {
        max-width: 85%;
    }
    
    .chat-container {
        height: calc(100vh - 150px);
    }
    
    .feature-card {
        padding: 1.5rem;
    }
}

/* 移动端优化 */
@media (max-width: 576px) {
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    .hero-section .btn {
        width: 100%;
        margin-bottom: 0.75rem;
        padding: 0.75rem 1rem;
    }
    
    .agent-card .card-body {
        padding: 1.25rem;
    }
    
    .message-content {
        max-width: 90%;
        padding: 0.75rem 1rem;
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    :root {
        --light-color: #2d3748;
        --dark-color: #f8f9fa;
        --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
        --box-shadow-lg: 0 15px 35px rgba(0, 0, 0, 0.3);
    }
    
    body {
        background: linear-gradient(135deg, #1a2b22 0%, #0f1f14 100%);
        color: var(--dark-color);
    }
    
    .feature-card,
    .agent-card,
    .card {
        background: #1a2b22;
        border-color: #07C160;
    }
    
    .chat-messages {
        background: rgba(26, 43, 34, 0.8);
    }
    
    .message.assistant .message-content {
        background: #1a2b22;
        color: var(--dark-color);
        border-left-color: var(--primary-color);
    }
}

/* 动画效果 */
.fade-in {
    animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

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

/* 滚动条美化 */
.chat-messages::-webkit-scrollbar {
    width: 6px;
}

.chat-messages::-webkit-scrollbar-track {
    background: rgba(7, 193, 96, 0.05);
    border-radius: 10px;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: rgba(7, 193, 96, 0.3);
    border-radius: 10px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: rgba(7, 193, 96, 0.5);
}

/* 工具提示美化 */
.tooltip {
    font-size: 0.85rem;
    opacity: 0.95 !important;
}

/* 波浪效果 */
.wave-bg {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    overflow: hidden;
    line-height: 0;
    z-index: 1;
}

.wave-bg svg {
    position: relative;
    display: block;
    width: calc(100% + 1.3px);
    height: 80px;
}

.wave-bg .shape-fill {
    fill: #FFFFFF;
}

/* 渐变文字 */
.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

/* 增强按钮样式 */
.btn-warning {
    background: linear-gradient(45deg, #ffc107, #ffca2c) !important;
    border: none !important;
    color: #000 !important;
    font-weight: 600 !important;
    transition: all 0.3s ease !important;
    text-shadow: none !important;
}

.btn-warning:hover {
    background: linear-gradient(45deg, #ffca2c, #ffd60a) !important;
    transform: translateY(-1px) !important;
    box-shadow: 0 4px 8px rgba(255, 193, 7, 0.3) !important;
    color: #000 !important;
}

.btn-danger {
    background: linear-gradient(45deg, #dc3545, #e85d75) !important;
    border: none !important;
    font-weight: 600 !important;
    transition: all 0.3s ease !important;
}

.btn-danger:hover {
    background: linear-gradient(45deg, #e85d75, #f1959b) !important;
    transform: translateY(-1px) !important;
    box-shadow: 0 4px 8px rgba(220, 53, 69, 0.3) !important;
}

/* 按钮阴影效果 */
.shadow-sm {
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1) !important;
}

/* 闪烁动画 */
.shine {
    animation: shine 2s infinite;
    position: relative;
    overflow: hidden;
}

.shine::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        to right,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.3) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    transform: rotate(30deg);
    animation: shineEffect 3s infinite;
}

@keyframes shine {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

@keyframes shineEffect {
    from {
        transform: translateX(-100%) rotate(30deg);
    }
    to {
        transform: translateX(100%) rotate(30deg);
    }
}

/* 脉冲动画 */
.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.8;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* 按钮样式 */
.btn {
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: var(--box-shadow);
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--box-shadow-lg);
}

/* 卡片样式 */
.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: all 0.3s ease;
    background: #e6f7ef;
    border-bottom: 3px solid transparent;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow-lg);
    border-bottom-color: #07C160;
}