/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    line-height: 1.2;
}

h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

h3 {
    font-size: 1.8rem;
    margin-bottom: 0.8rem;
}

p {
    margin-bottom: 1rem;
    color: #666;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
}

.btn-secondary {
    background: transparent;
    color: #667eea;
    border: 2px solid #667eea;
}

.btn-secondary:hover {
    background: #667eea;
    color: white;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: #333;
    border: 2px solid #333;
}

.btn-outline:hover {
    background: #333;
    color: white;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo h2 {
    font-family: 'Playfair Display', serif;
    color: #667eea;
    font-size: 1.8rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #667eea;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #667eea;
    transition: width 0.3s ease;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    padding-top: 80px;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    color: #333;
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: #667eea;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.hero-description {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-visual {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.3);
}

.hero-visual i {
    font-size: 6rem;
    color: white;
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    color: #333;
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.2rem;
    color: #666;
}

/* Focus and Scope Section */
.focus-scope {
    padding: 6rem 0;
    background: white;
}

.focus-content {
    max-width: 900px;
    margin: 0 auto;
}

.focus-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 2rem;
}

.focus-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.highlight-item {
    text-align: center;
    padding: 2rem;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border-radius: 15px;
    transition: transform 0.3s ease;
}

.highlight-item:hover {
    transform: translateY(-5px);
}

.highlight-item i {
    font-size: 2.5rem;
    color: #667eea;
    margin-bottom: 1rem;
}

.highlight-item h4 {
    color: #333;
    margin-bottom: 1rem;
}

.highlight-item p {
    color: #666;
    margin: 0;
}

/* Indexing Section */
.indexing {
    padding: 6rem 0;
    background: #f8f9fa;
}

.indexing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.indexing-category {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    border-left: 4px solid #667eea;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.indexing-category h3 {
    color: #667eea;
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
}

.indexing-category ul {
    list-style: none;
    padding: 0;
}

.indexing-category li {
    padding: 0.5rem 0;
    color: #666;
    border-bottom: 1px solid #e1e5e9;
    position: relative;
    padding-left: 1.5rem;
}

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

.indexing-category li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #667eea;
    font-weight: bold;
}

/* Publication Process Section */
.publication-process {
    padding: 6rem 0;
    background: white;
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.process-card {
    background: #f8f9fa;
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #e1e5e9;
}

.process-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.process-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.process-icon i {
    font-size: 2rem;
    color: white;
}

.process-card h3 {
    color: #333;
    margin-bottom: 1rem;
}

.process-card p {
    color: #666;
    line-height: 1.6;
}

/* Publication Charges Section */
.publication-charges {
    padding: 6rem 0;
    background: #f8f9fa;
}

.charges-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.charge-card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 2px solid #e1e5e9;
    position: relative;
}

.charge-card.featured {
    border-color: #667eea;
    transform: scale(1.05);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.2);
}

.charge-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.charge-card.featured:hover {
    transform: scale(1.05) translateY(-5px);
}

.charge-header {
    margin-bottom: 2rem;
}

.charge-header h3 {
    color: #333;
    margin-bottom: 1rem;
}

.charge-price {
    font-size: 2.5rem;
    font-weight: 700;
    color: #667eea;
    margin-bottom: 0.5rem;
}

.charge-duration {
    color: #666;
    font-size: 1.1rem;
}

.charge-features ul {
    list-style: none;
    padding: 0;
}

.charge-features li {
    padding: 0.5rem 0;
    color: #666;
    border-bottom: 1px solid #e1e5e9;
    position: relative;
    padding-left: 1.5rem;
}

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

.charge-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #667eea;
    font-weight: bold;
}

.waiver-info {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.waiver-info h3 {
    color: #667eea;
    margin-bottom: 1rem;
}

.waiver-info p {
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

/* Open Access Section */
.open-access {
    padding: 6rem 0;
    background: white;
}

.open-access-content {
    max-width: 900px;
    margin: 0 auto;
}

.open-access-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 2rem;
}

.license-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.license-option {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 15px;
    border-left: 4px solid #667eea;
}

.license-option h4 {
    color: #667eea;
    margin-bottom: 1rem;
}

.license-option p {
    color: #666;
    line-height: 1.6;
    margin: 0;
}

/* About Section (for about.html) */
.about {
    padding: 6rem 0;
    background: white;
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-text h3 {
    color: #667eea;
    margin-bottom: 1rem;
}

.about-text p {
    margin-bottom: 2rem;
    font-size: 1.1rem;
    line-height: 1.8;
}

.about-stats {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.stat-item {
    text-align: center;
    padding: 2rem;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: #667eea;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.1rem;
    color: #666;
    font-weight: 500;
}

/* Journal Stats - 专门为期刊页面设计的统计信息样式 */
.journal-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.journal-stats .stat-item {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 15px;
    padding: 2.5rem 1.5rem;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.2);
    position: relative;
    overflow: hidden;
    animation: fadeInUp 0.8s ease forwards;
    opacity: 0;
    transform: translateY(30px);
}

.journal-stats .stat-item:nth-child(1) {
    animation-delay: 0.1s;
}

.journal-stats .stat-item:nth-child(2) {
    animation-delay: 0.2s;
}

.journal-stats .stat-item:nth-child(3) {
    animation-delay: 0.3s;
}

.journal-stats .stat-item:nth-child(4) {
    animation-delay: 0.4s;
}

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

.journal-stats .stat-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
    pointer-events: none;
}

.journal-stats .stat-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.3);
}

.journal-stats .stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 0.8rem;
    position: relative;
    z-index: 1;
}

.journal-stats .stat-label {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    position: relative;
    z-index: 1;
}

.journal-stats .stat-icon {
    font-size: 2rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
    transition: transform 0.3s ease, color 0.3s ease;
}

.journal-stats .stat-item:hover .stat-icon {
    color: rgba(255, 255, 255, 1);
}

/* Publications Section (for publisher.html) */
.publications {
    padding: 6rem 0;
    background: #f8f9fa;
}

.publications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.publication-card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
}

.publication-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.publication-image {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.publication-image i {
    font-size: 2rem;
    color: white;
}

.publication-content h3 {
    color: #333;
    margin-bottom: 1rem;
}

.publication-content p {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.read-more {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.read-more:hover {
    color: #764ba2;
}

/* Submission Section (for submission.html) */
.submission {
    padding: 6rem 0;
    background: white;
}

.submission-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.submission-info h3 {
    color: #667eea;
    margin-bottom: 1.5rem;
}

.submission-info ul {
    list-style: none;
    margin-bottom: 2rem;
}

.submission-info li {
    padding: 0.5rem 0;
    color: #666;
    position: relative;
    padding-left: 1.5rem;
}

.submission-info li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #667eea;
    font-weight: bold;
}

.submission-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e1e5e9;
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* Contact Section (for contact.html) */
.contact {
    padding: 6rem 0;
    background: #f8f9fa;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.contact-item i {
    font-size: 1.5rem;
    color: #667eea;
    width: 40px;
    text-align: center;
}

.contact-item h4 {
    color: #333;
    margin-bottom: 0.5rem;
}

.contact-item p {
    color: #666;
    margin: 0;
}

/* Footer */
.footer {
    background: #2c3e50;
    color: white;
    padding: 3rem 0 1rem;
}

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

.footer-section h3,
.footer-section h4 {
    color: white;
    margin-bottom: 1rem;
}

.footer-section p {
    color: #bdc3c7;
    margin-bottom: 1rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #bdc3c7;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #667eea;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    display: inline-block;
    width: 40px;
    height: 40px;
    background: #667eea;
    color: white;
    text-align: center;
    line-height: 40px;
    border-radius: 50%;
    transition: background 0.3s ease;
}

.social-links a:hover {
    background: #764ba2;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #34495e;
    color: #bdc3c7;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-visual {
        width: 200px;
        height: 200px;
    }

    .hero-visual i {
        font-size: 4rem;
    }

    .focus-highlights {
        grid-template-columns: 1fr;
    }

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

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

    .charge-card.featured {
        transform: none;
    }

    .charge-card.featured:hover {
        transform: translateY(-5px);
    }

    .license-options {
        grid-template-columns: 1fr;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

    .submission-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

    .journal-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .journal-stats .stat-item {
        padding: 2rem 1rem;
    }

    .journal-stats .stat-number {
        font-size: 2rem;
    }

    .journal-stats .stat-icon {
        font-size: 1.5rem;
        margin-bottom: 0.8rem;
    }

    .hero-buttons {
        justify-content: center;
    }

    .submission-buttons {
        justify-content: center;
    }

    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-title {
        font-size: 2rem;
    }

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

    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .publication-card {
        padding: 1.5rem;
    }

    .contact-item {
        flex-direction: column;
        text-align: center;
    }

    .charge-card {
        padding: 1.5rem;
    }

    .process-card {
        padding: 1.5rem;
    }
} 

/* Page Header */
.page-header {
    padding: 120px 0 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

.page-header h1 {
    color: white;
    margin-bottom: 1rem;
}

.page-header p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.2rem;
}

/* Editorial Board Section */
.editorial-board {
    padding: 6rem 0;
    background: #f8f9fa;
}

.board-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.board-member {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.board-member:hover {
    transform: translateY(-5px);
}

.member-avatar {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.member-avatar i {
    font-size: 2rem;
    color: white;
}

.board-member h4 {
    color: #667eea;
    margin-bottom: 0.5rem;
}

.board-member p {
    margin-bottom: 0.5rem;
}

.member-affiliation {
    color: #666;
    font-style: italic;
}

/* Publisher Information */
.publisher-info {
    padding: 6rem 0;
    background: white;
}

.publisher-content {
    max-width: 800px;
    margin: 0 auto;
}

.publisher-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 2rem;
}

.publisher-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.detail-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 10px;
}

.detail-item i {
    font-size: 1.5rem;
    color: #667eea;
    width: 40px;
    text-align: center;
}

.detail-item h4 {
    color: #333;
    margin-bottom: 0.5rem;
}

.detail-item p {
    color: #666;
    margin: 0;
}

/* History Section */
.history {
    padding: 6rem 0;
    background: #f8f9fa;
}

.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #667eea;
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    align-items: center;
    margin-bottom: 3rem;
    position: relative;
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-year {
    background: #667eea;
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 25px;
    font-weight: 600;
    position: relative;
    z-index: 2;
}

.timeline-content {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    margin: 0 2rem;
    flex: 1;
}

.timeline-content h4 {
    color: #667eea;
    margin-bottom: 1rem;
}

.timeline-content p {
    color: #666;
    line-height: 1.6;
    margin: 0;
}

/* Latest Issue Section */
.latest-issue {
    padding: 6rem 0;
    background: white;
}

.issue-content {
    max-width: 800px;
    margin: 0 auto;
}

.issue-cover {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    align-items: center;
    background: #f8f9fa;
    padding: 3rem;
    border-radius: 15px;
}

.cover-image {
    width: 200px;
    height: 250px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
}

.cover-image i {
    font-size: 4rem;
    color: white;
}

.issue-details h3 {
    color: #333;
    margin-bottom: 1rem;
}

.issue-details p {
    margin-bottom: 0.5rem;
    color: #666;
}

/* Featured Articles Section */
.featured-articles {
    padding: 6rem 0;
    background: #f8f9fa;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.article-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.article-card:hover {
    transform: translateY(-5px);
}

.article-header h3 {
    color: #333;
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.article-authors {
    color: #667eea;
    font-style: italic;
    margin-bottom: 1rem;
}

.article-abstract p {
    color: #666;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.article-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: #666;
}

/* Special Issues Section */
.special-issues {
    padding: 6rem 0;
    background: white;
}

.special-issues-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.special-issue-card {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    transition: transform 0.3s ease;
    border: 1px solid #e1e5e9;
}

.special-issue-card:hover {
    transform: translateY(-5px);
}

.issue-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.issue-icon i {
    font-size: 2rem;
    color: white;
}

.special-issue-card h3 {
    color: #333;
    margin-bottom: 1rem;
}

.special-issue-card p {
    color: #666;
    margin-bottom: 0.5rem;
}

/* Archive Section */
.archive {
    padding: 6rem 0;
    background: #f8f9fa;
}

.archive-filters {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    justify-content: center;
    flex-wrap: wrap;
}

.archive-filters select {
    padding: 10px 15px;
    border: 2px solid #e1e5e9;
    border-radius: 5px;
    font-size: 1rem;
    background: white;
}

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

.archive-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    margin-bottom: 1rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.archive-info h4 {
    color: #333;
    margin-bottom: 0.5rem;
}

.archive-info p {
    color: #666;
    margin: 0;
}

/* Submission Guidelines Section */
.submission-guidelines {
    padding: 6rem 0;
    background: white;
}

.guidelines-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.guideline-card {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 15px;
    border-left: 4px solid #667eea;
}

.guideline-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.guideline-icon i {
    font-size: 1.5rem;
    color: white;
}

.guideline-card h3 {
    color: #333;
    margin-bottom: 1rem;
}

.guideline-card ul {
    list-style: none;
    padding: 0;
}

.guideline-card li {
    padding: 0.5rem 0;
    color: #666;
    position: relative;
    padding-left: 1.5rem;
}

.guideline-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #667eea;
    font-weight: bold;
}

/* Review Process Section */
.review-process {
    padding: 6rem 0;
    background: #f8f9fa;
}

.process-steps {
    max-width: 900px;
    margin: 0 auto;
}

.step {
    display: flex;
    align-items: center;
    margin-bottom: 3rem;
    position: relative;
}

.step:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 30px;
    top: 60px;
    bottom: -30px;
    width: 2px;
    background: #667eea;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1.2rem;
    margin-right: 2rem;
    position: relative;
    z-index: 2;
}

.step-content h3 {
    color: #333;
    margin-bottom: 1rem;
}

.step-content p {
    color: #666;
    line-height: 1.6;
    margin: 0;
}

/* Submission Form Section */
.submission-form-section {
    padding: 6rem 0;
    background: white;
}

.submission-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.submission-info h3 {
    color: #667eea;
    margin-bottom: 1.5rem;
}

.submission-info ul {
    list-style: none;
    margin-bottom: 2rem;
}

.submission-info li {
    padding: 0.5rem 0;
    color: #666;
    position: relative;
    padding-left: 1.5rem;
}

.submission-info li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #667eea;
    font-weight: bold;
}

.submission-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.submission-form {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 15px;
}

.submission-form .form-group {
    margin-bottom: 1.5rem;
}

.submission-form label {
    display: block;
    margin-bottom: 0.5rem;
    color: #333;
    font-weight: 500;
}

.submission-form input,
.submission-form select,
.submission-form textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e1e5e9;
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.submission-form input:focus,
.submission-form select:focus,
.submission-form textarea:focus {
    outline: none;
    border-color: #667eea;
}

.submission-form small {
    color: #666;
    font-size: 0.9rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* Contact Info Section */
.contact-info-section {
    padding: 6rem 0;
    background: white;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 2rem;
    background: #f8f9fa;
    border-radius: 15px;
    transition: transform 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-5px);
}

.contact-item i {
    font-size: 1.5rem;
    color: #667eea;
    width: 40px;
    text-align: center;
    margin-top: 0.5rem;
}

.contact-item h4 {
    color: #333;
    margin-bottom: 0.5rem;
}

.contact-item p {
    color: #666;
    margin-bottom: 0.5rem;
}

.contact-item p:last-child {
    margin-bottom: 0;
    font-size: 0.9rem;
    color: #888;
}

/* Editorial Team Section */
.editorial-team {
    padding: 6rem 0;
    background: #f8f9fa;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.team-member {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.team-member:hover {
    transform: translateY(-5px);
}

.member-avatar {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.member-avatar i {
    font-size: 2rem;
    color: white;
}

.team-member h4 {
    color: #667eea;
    margin-bottom: 0.5rem;
}

.member-name {
    font-weight: 600;
    color: #333;
    margin-bottom: 0.5rem;
}

.member-affiliation {
    color: #666;
    font-style: italic;
    margin-bottom: 0.5rem;
}

.member-email {
    color: #667eea;
    margin-bottom: 1rem;
}

.member-role {
    color: #666;
    font-size: 0.9rem;
    line-height: 1.5;
    margin: 0;
}

/* Contact Form Section */
.contact-form-section {
    padding: 6rem 0;
    background: white;
}

.contact-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
}

.contact-form {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 15px;
}

.contact-form .form-group {
    margin-bottom: 1.5rem;
}

.contact-form label {
    display: block;
    margin-bottom: 0.5rem;
    color: #333;
    font-weight: 500;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e1e5e9;
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: #667eea;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.9rem;
    color: #666;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin-top: 0.2rem;
}

.contact-sidebar {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.sidebar-section {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 15px;
}

.sidebar-section h3 {
    color: #667eea;
    margin-bottom: 1rem;
}

.sidebar-section p {
    color: #666;
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.sidebar-section ul {
    list-style: none;
    padding: 0;
}

.sidebar-section li {
    margin-bottom: 0.5rem;
}

.sidebar-section a {
    color: #667eea;
    text-decoration: none;
    transition: color 0.3s ease;
}

.sidebar-section a:hover {
    color: #764ba2;
}

/* FAQ Section */
.faq-section {
    padding: 6rem 0;
    background: #f8f9fa;
}

.faq-content {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    border-radius: 10px;
    margin-bottom: 1rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.faq-question:hover {
    background-color: #f8f9fa;
}

.faq-question h3 {
    color: #333;
    margin: 0;
    font-size: 1.1rem;
}

.faq-question i {
    color: #667eea;
    transition: transform 0.3s ease;
}

.faq-question.active i {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 1.5rem 1.5rem;
    color: #666;
    line-height: 1.6;
    display: none;
}

.faq-answer.active {
    display: block;
}

/* Responsive Design for new sections */
@media (max-width: 768px) {
    .page-header {
        padding: 100px 0 40px;
    }

    .timeline::before {
        left: 30px;
    }

    .timeline-item {
        flex-direction: row !important;
    }

    .timeline-year {
        margin-right: 2rem;
    }

    .issue-cover {
        grid-template-columns: 1fr;
        text-align: center;
    }

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

    .special-issues-grid {
        grid-template-columns: 1fr;
    }

    .archive-item {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }

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

    .step {
        flex-direction: column;
        text-align: center;
    }

    .step:not(:last-child)::after {
        display: none;
    }

    .step-number {
        margin-right: 0;
        margin-bottom: 1rem;
    }

    .submission-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

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

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

    .publisher-details {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 480px) {
    .page-header h1 {
        font-size: 2rem;
    }

    .page-header p {
        font-size: 1rem;
    }

    .issue-cover {
        padding: 2rem;
    }

    .cover-image {
        width: 150px;
        height: 200px;
    }

    .cover-image i {
        font-size: 3rem;
    }

    .archive-filters {
        flex-direction: column;
        align-items: center;
    }

    .archive-filters select {
        width: 100%;
        max-width: 300px;
    }

    .faq-question h3 {
        font-size: 1rem;
    }

    .contact-item {
        flex-direction: column;
        text-align: center;
    }

    .contact-item i {
        margin-top: 0;
        margin-bottom: 1rem;
    }

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

    .journal-stats .stat-item {
        padding: 1.5rem 1rem;
    }

    .journal-stats .stat-number {
        font-size: 1.8rem;
    }

    .journal-stats .stat-label {
        font-size: 0.9rem;
    }

    .journal-stats .stat-icon {
        font-size: 1.2rem;
        margin-bottom: 0.6rem;
    }
}