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

:root {
    /* 主色调 - 现代渐变色系 (Indigo -> Violet -> Teal) */
    --primary-color: #6366f1;
    /* Indigo 500 */
    --primary-dark: #4f46e5;
    /* Indigo 600 */
    --primary-light: #818cf8;
    /* Indigo 400 */

    --accent-color: #14b8a6;
    /* Teal 500 */
    --accent-light: #2dd4bf;
    /* Teal 400 */

    --secondary-color: #8b5cf6;
    /* Violet 500 */

    /* 背景色 */
    --bg-gradient-start: #f0f9ff;
    /* Sky 50 */
    --bg-gradient-end: #e0e7ff;
    /* Indigo 50 */

    /* Glassmorphism 变量 */
    --glass-bg: rgba(255, 255, 255, 0.65);
    --glass-border: rgba(255, 255, 255, 0.6);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
    --glass-blur: 12px;

    /* 文字颜色 */
    --text-main: #1e293b;
    /* Slate 800 */
    --text-secondary: #475569;
    /* Slate 600 */
    --text-light: #ffffff;

    /* 字体 */
    --font-heading: 'Fredoka', sans-serif;
    --font-body: 'Nunito', sans-serif;
}

body {
    font-family: var(--font-body);
    background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
    min-height: 100vh;
    color: var(--text-main);
    line-height: 1.6;
    background-attachment: fixed;
    overflow-x: hidden;
    /* 防止浮动元素溢出 */
}

/* 动态背景容器 */
.background-shapes {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.6;
    animation: float 20s infinite ease-in-out;
}

.shape-1 {
    top: -10%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: var(--primary-light);
    animation-delay: 0s;
}

.shape-2 {
    bottom: -10%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: var(--accent-light);
    animation-delay: -5s;
}

.shape-3 {
    top: 40%;
    left: 40%;
    width: 300px;
    height: 300px;
    background: var(--secondary-color);
    opacity: 0.4;
    animation-delay: -10s;
}

@keyframes float {
    0% {
        transform: translate(0, 0) rotate(0deg);
    }

    33% {
        transform: translate(30px, -50px) rotate(10deg);
    }

    66% {
        transform: translate(-20px, 20px) rotate(-5deg);
    }

    100% {
        transform: translate(0, 0) rotate(0deg);
    }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    position: relative;
    z-index: 1;
}

/* 头部样式 */
.header {
    text-align: center;
    padding: 80px 20px;
    animation: fadeInDown 0.8s ease-out;
    perspective: 1000px;
    /* 为3D效果做准备 */
}

.header-content {
    transition: transform 0.1s ease-out;
    /* 平滑的跟随效果 */
}

.header .title {
    font-family: var(--font-heading);
    font-size: 5rem;
    margin-bottom: 15px;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
    letter-spacing: 2px;
}

.header .subtitle {
    font-size: 1.6rem;
    color: var(--text-secondary);
    font-weight: 600;
}

/* 通用 Glassmorphism 容器 */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    box-shadow: var(--glass-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.glass-panel:hover {
    box-shadow: 0 12px 40px 0 rgba(31, 38, 135, 0.12);
}

.header-small {
    composes: glass-panel;
    padding: 20px;
    margin-bottom: 30px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.header-small h2 {
    font-family: var(--font-heading);
    font-size: 2rem;
    color: var(--primary-dark);
    margin: 0;
}

.back-btn {
    position: absolute;
    left: 20px;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 700;
    padding: 8px 16px;
    border-radius: 12px;
    transition: all 0.3s;
    background: rgba(255, 255, 255, 0.5);
}

.back-btn:hover {
    background: white;
    transform: translateX(-3px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

/* 主内容区 */
.main-content {
    composes: glass-panel;
    padding: 60px 40px;
    animation: fadeInUp 0.8s ease-out;
}

.action-buttons {
    display: flex;
    gap: 30px;
    justify-content: center;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 18px 40px;
    border: none;
    border-radius: 50px;
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0));
    z-index: -1;
    transition: opacity 0.3s;
    opacity: 0;
}

.btn:hover::before {
    opacity: 1;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
    background: white;
    color: var(--primary-color);
    border: 2px solid var(--primary-light);
}

.btn-secondary:hover {
    transform: translateY(-4px) scale(1.02);
    border-color: var(--primary-color);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.05);
}

.btn-small {
    padding: 10px 24px;
    font-size: 1rem;
    border-radius: 30px;
}

.btn-large {
    width: 100%;
    padding: 18px;
    font-size: 1.4rem;
    border-radius: 16px;
}

.btn-icon {
    font-size: 1.8rem;
}

/* 介绍区域 */
.intro {
    background: rgba(255, 255, 255, 0.5);
    border-radius: 20px;
    padding: 40px;
    margin-top: 40px;
    border: 1px solid rgba(255, 255, 255, 0.4);
}

.intro h3 {
    font-family: var(--font-heading);
    color: var(--primary-dark);
    margin-bottom: 20px;
    font-size: 1.8rem;
}

.intro ul {
    list-style: none;
}

.intro li {
    padding: 12px 0;
    font-size: 1.1rem;
    border-bottom: 1px dashed rgba(0, 0, 0, 0.05);
    display: flex;
    align-items: center;
    gap: 10px;
}

.intro li:last-child {
    border-bottom: none;
}

/* 绘图页面 */
.draw-page {
    composes: glass-panel;
    padding: 40px;
}

.draw-area {
    display: flex;
    justify-content: center;
    margin-bottom: 30px;
}

#drawCanvas {
    border: 4px solid white;
    border-radius: 20px;
    cursor: crosshair;
    background: white;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: box-shadow 0.3s;
}

#drawCanvas:hover {
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

/* 工具栏 */
.toolbar {
    background: rgba(255, 255, 255, 0.8);
    border-radius: 20px;
    padding: 25px;
    margin-bottom: 30px;
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.tool-section {
    margin-bottom: 25px;
}

.tool-section label {
    display: block;
    margin-bottom: 12px;
    font-weight: 700;
    color: var(--text-main);
    font-family: var(--font-heading);
}

.color-picker {
    display: flex;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
}

#colorPicker {
    width: 50px;
    height: 50px;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    overflow: hidden;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    padding: 0;
}

#colorPicker::-webkit-color-swatch-wrapper {
    padding: 0;
}

#colorPicker::-webkit-color-swatch {
    border: none;
}

.preset-colors {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.color-btn {
    width: 36px;
    height: 36px;
    border: 3px solid white;
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.color-btn:hover {
    transform: scale(1.2);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
    z-index: 1;
}

#brushSize {
    width: 100%;
    height: 10px;
    border-radius: 5px;
    outline: none;
    -webkit-appearance: none;
    background: #e0e0e0;
}

#brushSize::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    border: 3px solid white;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    transition: transform 0.2s;
}

#brushSize::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.tool-btn {
    padding: 12px 24px;
    margin-right: 10px;
    border: 2px solid var(--primary-color);
    background: white;
    color: var(--primary-color);
    border-radius: 12px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 700;
    transition: all 0.2s ease;
    font-family: var(--font-heading);
}

.tool-btn:hover,
.tool-btn.active {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(99, 102, 241, 0.3);
}

.clear-btn {
    border-color: #ef4444;
    color: #ef4444;
}

.clear-btn:hover {
    background: #ef4444;
    color: white;
    box-shadow: 0 4px 10px rgba(239, 68, 68, 0.3);
}

/* 提交区域 */
.submit-area {
    background: rgba(255, 255, 255, 0.8);
    border-radius: 20px;
    padding: 30px;
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.input-group {
    margin-bottom: 25px;
    position: relative;
}

.input-group label {
    display: block;
    margin-bottom: 12px;
    font-weight: 700;
    color: var(--text-main);
    font-family: var(--font-heading);
    font-size: 1.2rem;
}

.input-group input[type="text"] {
    width: 100%;
    padding: 15px 20px;
    border: 2px solid transparent;
    border-radius: 15px;
    font-size: 1.1rem;
    transition: all 0.3s;
    background: white;
    box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.03);
    font-family: var(--font-body);
}

.input-group input[type="text"]:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.char-count {
    position: absolute;
    right: 15px;
    top: 52px;
    color: #999;
    font-size: 0.9rem;
    font-weight: 600;
}

.tip {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-top: 15px;
    font-style: italic;
}

/* 围栏页面 */
.pen-stats {
    composes: glass-panel;
    padding: 25px;
    margin-bottom: 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.search-bar,
.sort-bar {
    composes: glass-panel;
    padding: 20px;
    margin-bottom: 20px;
}

.search-container,
.sort-container {
    display: flex;
    gap: 15px;
    align-items: center;
}

.search-container input[type="text"],
.sort-select {
    flex: 1;
    padding: 12px 20px;
    border: 2px solid transparent;
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s;
    background: white;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

.search-container input[type="text"]:focus,
.sort-select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.total-count {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-main);
    font-family: var(--font-heading);
}

.total-count span {
    color: var(--primary-dark);
    font-size: 1.8rem;
}

.pen-page {
    composes: glass-panel;
    padding: 30px;
    min-height: 500px;
}

.pig-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 30px;
}

.pig-card {
    background: white;
    border-radius: 20px;
    padding: 15px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
}

.pig-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 30px rgba(99, 102, 241, 0.2);
    border-color: var(--primary-light);
}

.pig-thumbnail {
    width: 100%;
    height: 220px;
    border-radius: 15px;
    object-fit: contain;
    background: #f9f9f9;
    margin-bottom: 15px;
    border: 1px solid #eee;
}

.pig-info {
    text-align: center;
}

.pig-name {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 5px;
    word-break: break-word;
}

.pig-location {
    color: var(--primary-color);
    font-size: 0.9rem;
    margin-bottom: 5px;
    font-weight: 600;
}

.pig-time {
    color: #aaa;
    font-size: 0.8rem;
    margin-bottom: 12px;
}

.like-btn {
    background: #fff;
    border: 2px solid var(--primary-light);
    color: var(--primary-color);
    padding: 8px 20px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 700;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.like-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: scale(1.05);
}

.like-btn.liked {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    animation: pulse 0.5s;
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.2);
    }

    100% {
        transform: scale(1);
    }
}

/* 弹窗样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(5px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: 30px;
    padding: 40px;
    max-width: 500px;
    width: 90%;
    text-align: center;
    position: relative;
    animation: modalPop 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
    max-height: 90vh;
    overflow-y: auto;
}

.modal-large {
    max-width: 900px;
}

@keyframes modalPop {
    from {
        transform: scale(0.8);
        opacity: 0;
    }

    to {
        transform: scale(1);
        opacity: 1;
    }
}

.modal-content h3 {
    font-family: var(--font-heading);
    color: var(--primary-dark);
    font-size: 2.2rem;
    margin-bottom: 20px;
}

.close-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    background: #f0f0f0;
    border: none;
    font-size: 1.5rem;
    color: #666;
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s;
}

.close-btn:hover {
    background: #ef4444;
    color: white;
    transform: rotate(90deg);
}

/* 详情页样式 */
.pig-detail {
    display: flex;
    gap: 40px;
    text-align: left;
}

.pig-detail-image {
    flex: 1;
}

.pig-detail-image img {
    width: 100%;
    border-radius: 20px;
    border: 4px solid white;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.pig-detail-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.pig-detail-info h3 {
    font-size: 2.5rem;
    margin-bottom: 5px;
}

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

/* 评论区 */
.comments {
    background: #f8f9fa;
    border-radius: 20px;
    padding: 20px;
    border: 1px solid #eee;
    margin-top: 20px;
}

.comments h4 {
    font-family: var(--font-heading);
    margin-bottom: 15px;
    color: var(--primary-dark);
    font-size: 1.3rem;
}

.comments-list {
    max-height: 300px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 15px;
    padding-right: 8px;
}

/* 自定义滚动条 */
.comments-list::-webkit-scrollbar {
    width: 6px;
}

.comments-list::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

.comments-list::-webkit-scrollbar-thumb {
    background: #ccc;
    border-radius: 10px;
}

.comments-list::-webkit-scrollbar-thumb:hover {
    background: #bbb;
}

.comment-item {
    background: white;
    border-radius: 12px;
    padding: 12px 15px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.03);
    border: 1px solid transparent;
    transition: border-color 0.2s;
}

.comment-item:hover {
    border-color: var(--primary-light);
}

.comment-content {
    color: var(--text-main);
    font-size: 1rem;
    margin-bottom: 8px;
}

.comment-time {
    color: #aaa;
    font-size: 0.8rem;
    text-align: right;
}

.comment-input textarea {
    width: 100%;
    border: 2px solid #eee;
    border-radius: 12px;
    padding: 12px;
    font-family: var(--font-body);
    font-size: 1rem;
    resize: vertical;
    min-height: 80px;
    outline: none;
    transition: all 0.3s;
}

.comment-input textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

/* 页脚 */
.footer {
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer a {
    color: var(--primary-color);
    font-weight: 600;
}

/* 动画 */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式设计 - 媒体查询 */

/* 平板设备 (max-width: 1024px) */
@media (max-width: 1024px) {
    .container {
        padding: 15px;
    }

    .header .title {
        font-size: 4rem;
    }

    .pig-grid {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
        gap: 20px;
    }
}

/* 移动设备 (max-width: 768px) */
@media (max-width: 768px) {

    /* 头部调整 */
    .header {
        padding: 50px 15px;
    }

    .header .title {
        font-size: 3rem;
    }

    .header .subtitle {
        font-size: 1.2rem;
    }

    .header-small {
        flex-direction: column;
        gap: 15px;
        padding: 15px;
        align-items: flex-start;
    }

    .header-small h2 {
        font-size: 1.6rem;
        text-align: center;
        align-self: center;
    }

    .back-btn {
        position: static;
        transform: none;
        margin-bottom: 10px;
        display: inline-block;
    }

    /* 按钮堆叠 */
    .action-buttons {
        flex-direction: column;
        gap: 15px;
    }

    .btn-large {
        width: 100%;
        font-size: 1.2rem;
    }

    /* 绘图页面调整 */
    .draw-page {
        padding: 20px;
    }

    .toolbar {
        padding: 15px;
    }

    .color-picker {
        justify-content: center;
    }

    .tool-section {
        text-align: center;
    }

    .tool-btn {
        margin: 5px;
        padding: 10px 15px;
        font-size: 0.9rem;
    }

    /* 详情页调整 */
    .pig-detail {
        flex-direction: column;
        gap: 20px;
    }

    .pig-detail-info h3 {
        font-size: 1.8rem;
        text-align: center;
    }

    .detail-location,
    .detail-time {
        text-align: center;
    }

    /* 围栏页面调整 */
    .pen-stats {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    .search-container,
    .sort-container {
        flex-direction: column;
        align-items: stretch;
    }

    .pig-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: 15px;
    }

    .pig-thumbnail {
        height: 160px;
    }

    .pig-name {
        font-size: 1.1rem;
    }

    /* 弹窗调整 */
    .modal-content {
        padding: 25px;
        width: 95%;
    }

    .modal-content h3 {
        font-size: 1.6rem;
    }
}