/* --- 新增：导航栏下划线动画 --- */
.nav-links {
    display: flex;
    align-items: center;
}
.nav-links a {
    position: relative;
    padding-bottom: 5px;
}
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--accent-orange);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateX(-50%);
}
.nav-links a:hover::after {
    width: 100%;
}

/* --- 下拉菜单样式 --- */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-toggle {
    cursor: pointer;
}

.dropdown-toggle::after {
    display: none;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--glass);
    backdrop-filter: blur(20px);
    min-width: 180px;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(45, 106, 79, 0.15);
    padding: 10px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(45, 106, 79, 0.1);
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(10px);
}

.dropdown-menu a {
    display: block;
    padding: 12px 25px;
    color: var(--text-main);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    margin: 0;
}

.dropdown-menu a:hover {
    background: var(--soft-green);
    color: var(--primary-green);
    padding-left: 30px;
}

.dropdown-menu a::after {
    display: none;
}

/* --- 三个点省略号样式 --- */
.menu-dots {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    margin-left: 2rem;
    cursor: pointer;
    padding: 5px;
    transition: transform 0.3s ease;
    position: relative;
}

.menu-dots:hover {
    transform: scale(1.1);
}

.menu-dots span {
    width: 4px;
    height: 4px;
    background: var(--text-main);
    border-radius: 50%;
    margin: 0 3px;
    transition: all 0.3s ease;
}

.menu-dots:hover span {
    background: var(--accent-orange);
}

/* --- 身份切换菜单样式 --- */
.identity-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--glass);
    backdrop-filter: blur(20px);
    min-width: 180px;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(45, 106, 79, 0.15);
    padding: 10px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(45, 106, 79, 0.1);
    z-index: 1000;
}

.menu-dots:hover .identity-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(10px);
}

.identity-menu a {
    display: block;
    padding: 12px 25px;
    color: var(--text-main);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    margin: 0;
}

.identity-menu a:hover {
    background: var(--soft-green);
    color: var(--primary-green);
    padding-left: 30px;
}

.identity-menu a::after {
    display: none;
}

/* --- 身份切换模态窗口样式 --- */
.identity-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    z-index: 2000;
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.3s ease;
}

.identity-modal.active {
    display: flex;
}

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

.modal-content {
    background: var(--glass);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(45, 106, 79, 0.2);
    max-width: 500px;
    width: 90%;
    overflow: hidden;
    animation: slideUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 25px;
    border-bottom: 1px solid rgba(45, 106, 79, 0.1);
    position: relative;
}

.modal-header h3 {
    font-size: 1.5rem;
    color: var(--primary-green);
    margin: 0;
}

.modal-close {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    font-size: 1.5rem;
    color: #888;
    cursor: pointer;
    width: 35px;
    height: 35px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: rgba(255, 159, 28, 0.1);
    color: var(--accent-orange);
    transform: translateY(-50%) rotate(90deg);
}

.modal-body {
    padding: 30px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.identity-btn {
    background: white;
    border: 2px solid rgba(45, 106, 79, 0.1);
    border-radius: 15px;
    padding: 25px 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.identity-btn:hover {
    border-color: var(--accent-orange);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(255, 159, 28, 0.15);
}

.identity-icon {
    width: 60px;
    height: 60px;
    background: var(--soft-green);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.identity-btn:hover .identity-icon {
    background: var(--accent-orange);
}

.identity-icon svg {
    width: 30px;
    height: 30px;
    fill: var(--primary-green);
    transition: all 0.3s ease;
}

.identity-btn:hover .identity-icon svg {
    fill: white;
}

.identity-btn span {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-main);
    transition: all 0.3s ease;
}

.identity-btn:hover span {
    color: var(--accent-orange);
}

/* --- 志愿者申请模态窗口样式 --- */
.apply-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    z-index: 2000;
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.3s ease;
}

.apply-modal.active {
    display: flex;
}

.apply-modal-content {
    background: var(--glass);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(45, 106, 79, 0.2);
    max-width: 600px;
    width: 90%;
    overflow: hidden;
    animation: slideUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.apply-modal-header {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 25px;
    border-bottom: 1px solid rgba(45, 106, 79, 0.1);
    position: relative;
}

.apply-modal-header h3 {
    font-size: 1.5rem;
    color: var(--primary-green);
    margin: 0;
}

.apply-modal-close {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    font-size: 1.5rem;
    color: #888;
    cursor: pointer;
    width: 35px;
    height: 35px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.apply-modal-close:hover {
    background: rgba(255, 159, 28, 0.1);
    color: var(--accent-orange);
}

.apply-modal-body {
    padding: 30px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 8px;
}

.required {
    color: var(--danger-red);
    margin-left: 4px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid rgba(45, 106, 79, 0.1);
    border-radius: 10px;
    font-size: 1rem;
    color: var(--text-main);
    background: white;
    transition: all 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-orange);
    box-shadow: 0 0 0 3px rgba(255, 159, 28, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #999;
}

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

.apply-modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 15px;
    padding: 20px 30px 30px;
}

.btn-cancel,
.btn-submit {
    padding: 12px 30px;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-cancel {
    background: white;
    color: #666;
    border: 2px solid rgba(45, 106, 79, 0.1);
}

.btn-cancel:hover {
    background: #f5f5f5;
    color: var(--text-main);
}

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

.btn-submit:hover {
    background: #1b4332;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(45, 106, 79, 0.3);
}

/* --- 新增：导航栏滚动透明度变化 --- */
nav {
    background: transparent; /* 初始透明 */
    backdrop-filter: none;
    transition: all 0.5s ease;
}
nav.scrolled {
    background: var(--glass);
    backdrop-filter: blur(15px);
    padding: 0.8rem 8%; /* 滚动后稍微收缩，更有动感 */
}

/* --- 新增：Hero 标题逐字/分段浮现 --- */
.hero-content > * {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}
.hero-main-title { animation-delay: 0.3s; }
.hero-subtitle { animation-delay: 0.6s; }
.hero-btn { animation-delay: 0.9s; }

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

/* --- 新增：滚动揭幕初始状态 --- */
.reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: all 1s cubic-bezier(0.165, 0.84, 0.44, 1);
}
.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* --- 鼠标跟随光晕效果 --- */
.cursor-glow {
    position: fixed;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(45, 106, 79, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    transition: opacity 0.3s ease;
    mix-blend-mode: multiply;
}

/* 波浪动画 */
.wave-container {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 150px;
    overflow: hidden;
    z-index: 0;
}
.wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 200%;
    height: 100%;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23d8f3dc" fill-opacity="0.3" d="M0,192L48,197.3C96,203,192,213,288,229.3C384,245,480,267,576,250.7C672,235,768,181,864,181.3C960,181,1056,235,1152,234.7C1248,235,1344,181,1392,154.7L1440,128L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>');
    background-size: 50% 100%;
    animation: wave 15s linear infinite;
}
.wave:nth-child(2) {
    bottom: 10px;
    opacity: 0.5;
    animation: wave 12s linear infinite reverse;
}
.wave:nth-child(3) {
    bottom: 20px;
    opacity: 0.3;
    animation: wave 20s linear infinite;
}
@keyframes wave {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* 数字计数动画 */
.counter {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-green);
    display: inline-block;
}
.counter-wrapper {
    text-align: center;
    padding: 2rem;
}
.counter-label {
    font-size: 1rem;
    color: #666;
    margin-top: 0.5rem;
}

/* 悬浮粒子效果 */
.floating-particle {
    position: absolute;
    width: 6px;
    height: 6px;
    background: var(--accent-orange);
    border-radius: 50%;
    opacity: 0.4;
    animation: float 8s ease-in-out infinite;
}
@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); opacity: 0.4; }
    50% { transform: translateY(-30px) rotate(180deg); opacity: 0.8; }
}

/* 渐变文字效果 */
.gradient-text {
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--accent-orange) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 磁性按钮效果 */
.magnetic-btn {
    position: relative;
    transition: transform 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
}
.magnetic-btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}
.magnetic-btn:hover::after {
    width: 300px;
    height: 300px;
}

/* 按钮光泽扫过效果 */
.hero-btn {
    position: relative;
    overflow: hidden;
}
.hero-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}
.hero-btn:hover::before {
    left: 100%;
}

/* 卡片悬浮增强效果 */
.portal-card:hover { 
    transform: translateY(-15px) scale(1.02); 
}
.job-card:hover { 
    transform: scale(1.02) translateY(-5px);
}
.tool-card:hover { 
    transform: translateY(-10px) scale(1.03);
}

/* 响应式调整 */
@media (max-width: 992px) {
    .cursor-glow { display: none; }
}

/* --- AI助手样式 --- */
.ai-assistant-btn {
    position: fixed;
    bottom: 50px;
    right: 50px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--accent-orange) 100%);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(45, 106, 79, 0.3);
    z-index: 1000;
    transition: all 0.3s ease;
    animation: pulse 2s infinite;
}

.ai-assistant-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(45, 106, 79, 0.4);
}

.ai-assistant-btn svg {
    width: 30px;
    height: 30px;
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 4px 20px rgba(45, 106, 79, 0.3); }
    50% { box-shadow: 0 4px 30px rgba(45, 106, 79, 0.5); }
}

.ai-assistant-window {
    position: fixed;
    top: 0;
    right: -400px;
    width: 400px;
    height: 100vh;
    background: var(--glass);
    backdrop-filter: blur(20px);
    box-shadow: -5px 0 30px rgba(0, 0, 0, 0.1);
    z-index: 1001;
    transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
}

.ai-assistant-window.active {
    right: 0;
}

.ai-assistant-header {
    padding: 20px;
    border-bottom: 1px solid rgba(45, 106, 79, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(135deg, rgba(45, 106, 79, 0.1) 0%, rgba(255, 165, 0, 0.1) 100%);
}

.ai-assistant-header h3 {
    margin: 0;
    color: var(--primary-green);
    font-size: 1.2rem;
    font-weight: 600;
}

.ai-assistant-close {
    width: 30px;
    height: 30px;
    border: none;
    background: rgba(45, 106, 79, 0.1);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--primary-green);
    font-size: 1.2rem;
    transition: all 0.3s ease;
}

.ai-assistant-close:hover {
    background: rgba(45, 106, 79, 0.2);
    transform: rotate(90deg);
}

.ai-assistant-content {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
}

.ai-message {
    background: rgba(45, 106, 79, 0.1);
    padding: 15px;
    border-radius: 12px;
    margin-bottom: 15px;
    color: var(--text-main);
    line-height: 1.6;
    border-left: 3px solid var(--primary-green);
}

.ai-message strong {
    color: var(--primary-green);
}

.ai-assistant-input-area {
    padding: 20px;
    border-top: 1px solid rgba(45, 106, 79, 0.1);
    background: rgba(255, 255, 255, 0.5);
}

.ai-assistant-input {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid rgba(45, 106, 79, 0.2);
    border-radius: 8px;
    font-size: 0.95rem;
    background: white;
    color: var(--text-main);
    transition: all 0.3s ease;
    margin-bottom: 10px;
    font-family: inherit;
}

.ai-assistant-input:focus {
    outline: none;
    border-color: var(--primary-green);
    box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.1);
}

.ai-assistant-input::placeholder {
    color: #999;
}

.ai-assistant-submit {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--accent-orange) 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.ai-assistant-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(45, 106, 79, 0.3);
}

.ai-assistant-submit:active {
    transform: translateY(0);
}

.ai-message.loading {
    opacity: 0.7;
}

.loading-dots::after {
    content: '...';
    animation: dots 1.5s steps(4, end) infinite;
}

@keyframes dots {
    0%, 20% {
        content: '.';
    }
    40% {
        content: '..';
    }
    60%, 100% {
        content: '...';
    }
}

/* ==================== Toast通知样式 ==================== */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 24px;
    background: var(--glass);
    backdrop-filter: blur(20px);
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    z-index: 30000;
    transform: translateX(400px);
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    min-width: 300px;
}

.toast.show {
    transform: translateX(0);
    opacity: 1;
}

.toast-icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 14px;
    flex-shrink: 0;
}

.toast-success .toast-icon {
    background: var(--primary-green);
    color: white;
}

.toast-error .toast-icon {
    background: var(--danger-red);
    color: white;
}

.toast-warning .toast-icon {
    background: var(--accent-orange);
    color: white;
}

.toast-info .toast-icon {
    background: #3b82f6;
    color: white;
}

.toast-message {
    color: var(--text-main);
    font-size: 0.95rem;
    font-weight: 500;
}

/* ==================== 3D模型查看器样式 ==================== */
.model-viewer-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    z-index: 20000;
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.3s ease;
}

.model-viewer-modal.active {
    display: flex;
}

.model-viewer-content {
    background: var(--glass);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    max-width: 1200px;
    width: 95%;
    max-height: 90vh;
    overflow: hidden;
    animation: slideUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
}

.model-viewer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    border-bottom: 2px solid var(--soft-green);
    background: linear-gradient(135deg, var(--soft-green) 0%, #fff 100%);
}

.model-viewer-header h3 {
    color: var(--primary-green);
    margin: 0;
    font-size: 1.5rem;
    font-weight: 700;
}

.model-viewer-close {
    background: transparent;
    border: none;
    font-size: 1.8rem;
    color: var(--text-main);
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.model-viewer-close:hover {
    background: var(--danger-red);
    color: white;
    transform: rotate(90deg);
}

.model-viewer-body {
    display: flex;
    flex: 1;
    overflow: hidden;
    flex-direction: column;
}

model-viewer {
    width: 100%;
    height: 500px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    display: block;
    position: relative;
    border-radius: 0;
    overflow: hidden;
}

model-viewer::part(default-model) {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.model-viewer-info {
    background: var(--sunrise-gold);
    padding: 20px;
    border-top: 2px solid var(--soft-green);
}

.info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid rgba(45, 106, 79, 0.1);
}

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

.info-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-main);
}

.info-value {
    font-size: 0.9rem;
    color: var(--primary-green);
    font-weight: 600;
}

.debug-info {
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px dashed rgba(45, 106, 79, 0.3);
}

.debug-info .info-value {
    color: #f59e0b;
    font-size: 0.85rem;
    word-break: break-all;
}

@media (max-width: 992px) {
    model-viewer {
        height: 400px;
    }
}