:root {
    /* Color Palette - Premium Dark Theme with Purple/Blue accents */
    --clr-bg: #0a0a0f;
    --clr-bg-alt: #12121a;
    --clr-accent-1: #6366f1; /* Indigo */
    --clr-accent-2: #a855f7; /* Purple */
    --clr-accent-3: #ec4899; /* Pink */
    
    --clr-text: #f8fafc;
    --clr-text-muted: #94a3b8;
    
    --glass-bg: rgba(30, 30, 46, 0.4);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-highlight: rgba(255, 255, 255, 0.15);
    
    --font-sans: 'Outfit', sans-serif;
    --font-serif: 'Playfair Display', serif;
    
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--clr-bg);
    color: var(--clr-text);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* Background Animations */
.bg-orb {
    position: fixed;
    border-radius: 50%;
    filter: blur(120px);
    z-index: -1;
    opacity: 0.4;
    animation: drift 20s infinite alternate ease-in-out;
}

.orb-1 {
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, var(--clr-accent-1) 0%, transparent 60%);
    top: -20vh;
    left: -10vw;
}

.orb-2 {
    width: 50vw;
    height: 50vw;
    background: radial-gradient(circle, var(--clr-accent-2) 0%, transparent 60%);
    bottom: -10vh;
    right: -10vw;
    animation-delay: -5s;
}

.orb-3 {
    width: 40vw;
    height: 40vw;
    background: radial-gradient(circle, var(--clr-accent-3) 0%, transparent 60%);
    top: 40vh;
    left: 30vw;
    opacity: 0.2;
    animation-duration: 25s;
}

@keyframes drift {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(5%, 5%) scale(1.1); }
}

/* Typography */
h1, h2, h3, h4, h5 {
    line-height: 1.2;
    margin-bottom: 1rem;
    font-weight: 600;
}

.serif-text {
    font-family: var(--font-serif);
    font-style: italic;
    font-weight: 600;
    color: var(--clr-accent-2);
}

.text-muted {
    color: var(--clr-text-muted);
}

/* Glassmorphism Utilities */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* Layout Utilities */
.section {
    padding: 8rem 5%;
    max-width: 1400px;
    margin: 0 auto;
}

.bg-alternate {
    background-color: rgba(0,0,0,0.2);
    border-top: 1px solid var(--glass-border);
    border-bottom: 1px solid var(--glass-border);
    max-width: 100%;
    padding-left: 5vw;
    padding-right: 5vw;
}

.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 3rem; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; }

.p-xl { padding: 3rem; }
.mb-xl { margin-bottom: 2rem; }
.text-center { text-align: center; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.8rem 1.8rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--clr-accent-1), var(--clr-accent-2));
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.6);
}

.btn-secondary {
    color: var(--clr-text);
}

.btn-secondary:hover {
    background: var(--glass-highlight);
    transform: translateY(-2px);
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.w-100 { width: 100%; }

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    border-radius: 0;
    border-left: none;
    border-right: none;
    border-top: none;
    padding: 1rem 5%;
    transition: var(--transition);
}

.navbar.scrolled {
    padding: 0.5rem 5%;
    background: rgba(10, 10, 15, 0.85); /* Slightly darker when scrolled */
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--clr-text);
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--clr-accent-1), var(--clr-accent-2));
    border-radius: 12px;
    font-weight: 700;
    font-size: 1.2rem;
    color: white;
}

.logo-icon.small {
    width: 30px; height: 30px; font-size: 0.9rem; border-radius: 8px;
}

.logo-text {
    font-family: var(--font-serif);
    font-weight: 700;
    font-size: 1.6rem;
    letter-spacing: 0.5px;
}

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

.nav-links a {
    color: var(--clr-text-muted);
    text-decoration: none;
    font-size: 1.15rem;
    font-weight: 600;
    transition: var(--transition);
    position: relative;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--clr-text);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0%;
    height: 2px;
    background: var(--clr-accent-2);
    transition: var(--transition);
}

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

.btn-lang {
    background: none;
    border: 1px solid var(--glass-border);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    color: var(--clr-text);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-lang:hover {
    background: var(--glass-highlight);
}

.btn-lang .mute {
    color: var(--clr-text-muted);
    font-weight: 400;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--clr-text);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 5rem; /* Account for navbar */
    position: relative;
    max-width: 1400px;
    margin: 0 auto;
    padding-left: 5%;
    padding-right: 5%;
}

.hero-content {
    flex: 1;
    max-width: 800px;
    z-index: 10;
}

.badge {
    display: inline-block;
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--clr-accent-2);
    margin-bottom: 1.5rem;
    background: rgba(168, 85, 247, 0.1);
    border: 1px solid rgba(168, 85, 247, 0.3);
}

.hero h1 {
    font-size: clamp(3rem, 6vw, 5.5rem);
    letter-spacing: -1px;
    margin-bottom: 1.5rem;
}

.hero h1 .serif-text {
    font-size: clamp(2.5rem, 4vw, 4rem);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--clr-text-muted);
    max-width: 600px;
    margin-bottom: 3rem;
}

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

.hero-visual {
    position: absolute;
    right: 5%;
    top: 50%;
    transform: translateY(-50%);
    width: 400px;
    height: 500px;
    border-radius: 24px;
    overflow: hidden;
    z-index: 5;
    display: none; /* Hidden on small screens */
}

@media (min-width: 1024px) {
    .hero-visual { display: block; }
}

.hero-visual .abstract-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(20px);
}

.hero-visual .shape-1 {
    width: 200px; height: 200px;
    background: var(--clr-accent-1);
    top: 10%; left: 10%;
    animation: drift 10s infinite alternate;
}

.hero-visual .shape-2 {
    width: 250px; height: 250px;
    background: var(--clr-accent-3);
    bottom: -10%; right: -10%;
    animation: drift 15s infinite alternate-reverse;
}

.hero-visual .glass-overlay {
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(40px);
}

/* Common Section Styles */
.section-header { margin-bottom: 4rem; }
.section-header.center { text-align: center; }
.section-header h2 { font-size: 2.5rem; }

.section-sub {
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

.line-decorator {
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--clr-accent-1), var(--clr-accent-2));
    border-radius: 2px;
    margin-top: 1rem;
}

.center-line { margin: 1rem auto 0; }

.card {
    border-radius: 20px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
    border-color: rgba(255, 255, 255, 0.15);
}

/* Lists */
.feature-list { list-style: none; }
.feature-list li {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.2rem;
    font-size: 1.1rem;
}
.feature-list .icon { font-size: 1.5rem; }

/* Timeline / Guidelines */
.timeline {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.timeline-item {
    position: relative;
    padding: 2rem 2rem 2rem 6rem;
    overflow: hidden;
}

.step-num {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 3rem;
    font-weight: 800;
    color: rgba(255, 255, 255, 0.05);
    font-family: var(--font-sans);
    transition: color 0.3s ease;
}

.timeline-item:hover .step-num {
    color: rgba(168, 85, 247, 0.15);
}

/* Download Section */
.giant-card {
    padding: 5rem 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.highlight-text {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 3rem;
}

.download-box {
    display: inline-flex;
    align-items: center;
    background: rgba(0,0,0,0.3);
    border-radius: 12px;
    padding: 1rem;
    border: 1px solid var(--glass-border);
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.file-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #2b5876, #4e4376);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    color: white;
}

.file-info {
    text-align: left;
    display: flex;
    flex-direction: column;
}

.file-size {
    font-size: 0.85rem;
    color: var(--clr-text-muted);
}

/* Editors Grid */
.profile-card {
    padding: 2.5rem 2rem;
    text-align: center;
}

.profile-avatar {
    width: 100px;
    height: 100px;
    margin: 0 auto 1.5rem;
    border-radius: 50%;
    padding: 4px;
    background: linear-gradient(135deg, var(--clr-accent-1), var(--clr-accent-3));
}

.avatar-placeholder {
    width: 100%;
    height: 100%;
    background-color: var(--clr-bg-alt);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--clr-text-muted);
}

.designation {
    color: var(--clr-accent-2);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.department {
    font-size: 0.85rem;
    color: var(--clr-text-muted);
}

/* Contact Info & Forms */
.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.info-item .icon {
    font-size: 1.8rem;
    background: var(--glass-bg);
    padding: 1rem;
    border-radius: 12px;
    border: 1px solid var(--glass-border);
}

.info-item h5 {
    margin-bottom: 0.2rem;
    font-family: var(--font-sans);
}

.info-item a, .info-item p {
    color: var(--clr-text-muted);
    text-decoration: none;
    transition: var(--transition);
}

.info-item a:hover {
    color: var(--clr-accent-1);
}

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

.form-control {
    width: 100%;
    padding: 1rem;
    background: rgba(0,0,0,0.2);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    color: var(--clr-text);
    font-family: var(--font-sans);
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--clr-accent-1);
    background: rgba(0,0,0,0.4);
}

/* Footer */
.footer {
    border-top: 1px solid var(--glass-border);
    padding: 3rem 5%;
    text-align: center;
}

.footer-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--font-serif);
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.copyright {
    color: var(--clr-text-muted);
    font-size: 0.9rem;
}

/* Animations Classes */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s forwards cubic-bezier(0.25, 0.8, 0.25, 1);
}

.fade-in {
    opacity: 0;
    animation: fadeIn 1.2s forwards ease;
}

.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }
.delay-3 { animation-delay: 0.6s; }

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

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

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--clr-bg-alt);
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        border-bottom: 1px solid var(--glass-border);
        clip-path: polygon(0 0, 100% 0, 100% 0, 0 0); /* Hidden */
        transition: clip-path 0.4s ease;
    }
    
    .nav-links.active {
        clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
    }

    .mobile-menu-btn { display: flex; }
    
    .nav-actions { margin-right: 1.5rem; margin-left: auto; }
    
    .hero-buttons { flex-direction: column; width: 100%; max-width: 300px; }
    .hero-buttons .btn { text-align: center; }
    
    .timeline-item { padding: 1.5rem 1.5rem 1.5rem 4rem; }
    .step-num { left: 10px; font-size: 2rem; }
    
    .download-box { flex-direction: column; text-align: center; }
}

/* Modal Styles */
.modal {
    position: fixed; inset: 0; background: rgba(0,0,0,0.7); z-index: 1000;
    display: flex; align-items: center; justify-content: center; backdrop-filter: blur(5px);
}
.modal-content {
    width: 90%; max-width: 450px; position: relative;
    animation: fadeInUp 0.4s ease;
}
.close-modal {
    position: absolute; right: 20px; top: 20px; font-size: 1.5rem; cursor: pointer; color: var(--clr-text-muted);    
}
.mt-3 { margin-top: 1rem; }
.text-accent { color: var(--clr-accent-2); text-decoration: none; font-weight: 500;}

/* Metrics Banner (SSCI) */
.metrics-banner {
    padding: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    background: rgba(15, 23, 42, 0.6);
}
.metrics-container {
    max-width: var(--max-w);
    margin: 0 auto;
    display: grid;
    gap: 1.5rem;
    text-align: center;
}
.metrics-container.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}
.metric-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}
.metric-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--clr-accent-2);
    font-family: 'Playfair Display', serif;
}
.metric-label {
    font-size: 0.9rem;
    color: var(--clr-text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 5px;
}
.indexing-logos {
    display: flex;
    flex-direction: row;
    gap: 10px;
}
.index-badge {
    background: rgba(168, 85, 247, 0.15);
    border: 1px solid var(--clr-accent-1);
    color: var(--clr-accent-1);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.5px;
}

/* Accordion Guidelines */
.accordion-container {
    width: 100%;
}
.accordion-item {
    margin-bottom: 1rem;
    overflow: hidden;
}
.accordion-header {
    width: 100%;
    text-align: left;
    padding: 1.2rem 1.5rem;
    background: transparent;
    color: var(--clr-text);
    font-size: 1.1rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: color 0.3s;
}
.accordion-header:hover {
    color: var(--clr-accent-1);
}
.accordion-header::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--clr-accent-2);
    transition: transform 0.3s;
}
.accordion-header.active::after {
    content: '-';
}
.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    padding: 0 1.5rem;
}
.accordion-header.active + .accordion-content {
    padding-bottom: 1.5rem;
}