/* Custom Properties for Modern Design System */
:root {
    --bg-base: #0a0a0f;
    --bg-surface: rgba(20, 20, 30, 0.6);
    --bg-glass: rgba(255, 255, 255, 0.03);
    --border-glass: rgba(255, 255, 255, 0.08);

    --text-primary: #f8fafc;
    --text-muted: #94a3b8;

    --color-accent: #38bdf8;
    --color-accent-hover: #0ea5e9;
    --color-gradient-start: #818cf8;
    --color-gradient-end: #c084fc;

    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;

    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base Reset for robust rendering */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    /* Ensuring adequate contrast across the document */
}

/* Background Effects with Micro-animations */
.background-effects {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.4;
    animation: float 20s infinite alternate ease-in-out;
}

.blob-1 {
    top: -10%;
    left: -10%;
    width: 50vw;
    height: 50vw;
    background: radial-gradient(circle, rgba(129, 140, 248, 0.4) 0%, rgba(10, 10, 15, 0) 70%);
}

.blob-2 {
    bottom: -20%;
    right: -10%;
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, rgba(192, 132, 252, 0.3) 0%, rgba(10, 10, 15, 0) 70%);
    animation-delay: -5s;
}

.blob-3 {
    top: 40%;
    left: 50%;
    width: 40vw;
    height: 40vw;
    background: radial-gradient(circle, rgba(56, 189, 248, 0.2) 0%, rgba(10, 10, 15, 0) 70%);
    transform: translate(-50%, -50%);
    animation-delay: -10s;
}

@keyframes float {
    0% {
        transform: translate(0, 0) scale(1);
    }

    100% {
        transform: translate(5%, 10%) scale(1.1);
    }
}

/* Navigation - Accessible UI */
.glass-nav {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1rem 5%;
    background: rgba(10, 10, 15, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-glass);
    z-index: 100;
}

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

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo img {
    height: 55px;
    width: auto;
    object-fit: contain;
    background: radial-gradient(ellipse, rgba(255, 255, 255, 0.95) 40%, rgba(255, 255, 255, 0) 90%);
    padding: 0.2rem 1rem;
    border-radius: 70px;
    filter: drop-shadow(0 0 15px rgba(255, 255, 255, 0.2));
}

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

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    transition: var(--transition-smooth);
    padding: 0.5rem;
}

.nav-links a:hover,
.nav-links a:focus {
    color: var(--color-accent);
    outline: none;
}

.nav-links a:focus-visible {
    outline: 2px solid var(--color-accent);
    border-radius: 4px;
}

/* Typography & General Layout */
h1,
h2,
h3 {
    font-family: var(--font-heading);
    line-height: 1.2;
}

.section {
    padding: 6rem 5% 4rem;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.section-container {
    max-width: 1000px;
    margin: 0 auto;
    width: 100%;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    font-weight: 600;
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 80px;
}

.hero-content {
    max-width: 800px;
}

.tag {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: rgba(56, 189, 248, 0.1);
    border: 1px solid rgba(56, 189, 248, 0.3);
    border-radius: 50px;
    color: var(--color-accent);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 1.5rem;
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #fff 20%, #94a3b8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero h2 {
    font-size: clamp(1.1rem, 2vw, 1.5rem);
    font-weight: 400;
    color: #cbd5e1;
    margin-bottom: 1.5rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-affiliation {
    margin-bottom: 2rem;
}

.affiliation-badge {
    display: inline-flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    padding: 0.6rem 1.2rem;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition-smooth);
    backdrop-filter: blur(10px);
}

.affiliation-badge:hover,
.affiliation-badge:focus {
    background: rgba(56, 189, 248, 0.15);
    border-color: rgba(56, 189, 248, 0.4);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(56, 189, 248, 0.2);
}

.hero-details {
    font-size: 1.15rem;
    color: #e2e8f0;
    margin-bottom: 2.5rem;
    line-height: 1.6;
}

.hero-details strong {
    color: var(--color-accent);
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 0.8rem 1.8rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-smooth);
    display: inline-block;
}

.btn-primary {
    background: var(--color-accent);
    color: #000;
    box-shadow: 0 4px 15px rgba(56, 189, 248, 0.3);
}

.btn-primary:hover,
.btn-primary:focus {
    background: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(56, 189, 248, 0.4);
}

.btn-secondary {
    background: var(--bg-glass);
    color: var(--text-primary);
    border: 1px solid var(--border-glass);
}

.btn-secondary:hover,
.btn-secondary:focus {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.btn:focus-visible {
    outline: 2px solid #fff;
    outline-offset: 4px;
}

/* Glassmorphism Cards */
.glass-card {
    background: var(--bg-surface);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    padding: 2.5rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transition: var(--transition-smooth);
}

.glass-card:hover {
    border-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
}

.content-body p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    color: #e2e8f0;
}

.content-body p:last-child {
    margin-bottom: 0;
}

.content-body strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* Timeline/Program Styles */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 20px;
    width: 2px;
    background: var(--border-glass);
}

.timeline-item {
    position: relative;
    padding-left: 60px;
    margin-bottom: 2rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 14px;
    top: 0;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--bg-base);
    border: 2px solid var(--color-accent);
    z-index: 1;
}

.timeline .time {
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.timeline-content {
    padding: 1.5rem;
}

.timeline-content.highlight {
    border-color: rgba(192, 132, 252, 0.4);
    box-shadow: 0 0 20px rgba(192, 132, 252, 0.1);
}

.timeline-content.accent {
    border-left: 4px solid var(--color-accent);
}

.timeline-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: #f8fafc;
}

.timeline-content p {
    color: #cbd5e1;
}

.organizer-names {
    font-size: 0.95rem;
    margin-top: 0.5rem;
    font-style: italic;
    color: #94a3b8;
}

/* Organizers Grid */
.organizers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.organizer-card {
    text-align: center;
    padding: 2rem;
}

.org-avatar {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.5rem;
    color: #fff;
    box-shadow: 0 4px 15px rgba(129, 140, 248, 0.4);
}

.org-name {
    font-size: 1.3rem;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.org-affiliation {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.org-links {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.org-links a,
.org-links button {
    font-family: inherit;
    cursor: pointer;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    padding: 0.5rem 0.8rem;
    border: 1px solid var(--border-glass);
    border-radius: 6px;
    transition: var(--transition-smooth);
    background: var(--bg-glass);
}

.org-links a:hover,
.org-links a:focus,
.org-links button:hover,
.org-links button:focus {
    background: var(--color-accent);
    color: #000;
    border-color: var(--color-accent);
}

.org-links a:focus-visible,
.org-links button:focus-visible {
    outline: 2px solid #fff;
    outline-offset: 2px;
}

/* Footer */
.glass-footer {
    padding: 2rem 5%;
    text-align: center;
    border-top: 1px solid var(--border-glass);
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.footer-content p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in.appear {
    opacity: 1;
    transform: translateY(0);
}

/* Accessibility Focus States General */
:focus-visible {
    outline: 2px dashed var(--color-accent);
    outline-offset: 4px;
}

/* Responsive */
@media (max-width: 768px) {
    .glass-nav nav {
        flex-direction: column;
        gap: 1rem;
    }

    .section {
        padding: 5rem 5% 3rem;
    }

    .timeline::before {
        left: 10px;
    }

    .timeline-item {
        padding-left: 40px;
    }

    .timeline-item::before {
        left: 4px;
    }
}

/* Custom Lists */
.custom-list {
    list-style-type: none;
    margin-top: 1rem;
    margin-bottom: 2rem;
    padding-left: 0.5rem;
}

.custom-list li {
    position: relative;
    padding-left: 28px;
    margin-bottom: 0.8rem;
    color: #cbd5e1;
    font-size: 1.05rem;
}

.custom-list li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: bold;
}

/* Submissions Specifics */
.submissions-content {
    background: transparent;
    border: none;
    box-shadow: none;
    padding: 0;
}

.submissions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 1rem;
}

.submission-card {
    background: var(--bg-surface);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-glass);
    border-radius: 12px;
    padding: 1.8rem;
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
}

.submission-card:hover {
    border-color: rgba(56, 189, 248, 0.3);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.submission-card h3 {
    margin-top: 0;
    margin-bottom: 1rem;
    font-size: 1.35rem;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-glass);
    padding-bottom: 0.5rem;
    display: inline-block;
}

.info-block {
    background: rgba(56, 189, 248, 0.05);
    border-left: 4px solid var(--color-accent);
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    backdrop-filter: blur(8px);
}

.info-block.important {
    border-left-color: #f43f5e;
    background: rgba(244, 63, 94, 0.05);
}

.submissions-content a {
    color: var(--color-accent);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-smooth);
}

.submissions-content a:hover,
.submissions-content a:focus {
    text-decoration: underline;
    color: var(--color-accent-hover);
}