/* ==========================================================================
   CSS Variables & Reset (Colorful High-Tech / Lab Palette)
   ========================================================================== */
   :root {
    /* Vibrant brand colors */
    --primary-dark: #0f172a;       /* Deep Navy */
    --primary: #3b82f6;            /* Vibrant Blue */
    --secondary: #06b6d4;          /* Cyan/Teal */
    --accent-magenta: #ec4899;     /* Hot Pink/Magenta */
    --accent-purple: #8b5cf6;      /* Vibrant Purple */
    
    /* Gradients */
    --gradient-main: linear-gradient(135deg, #0f172a 0%, #1e3a8a 50%, #06b6d4 100%);
    --gradient-btn: linear-gradient(to right, #3b82f6, #8b5cf6);
    --gradient-text: linear-gradient(to right, #ec4899, #8b5cf6);
    --gradient-flow: linear-gradient(90deg, #06b6d4, #3b82f6, #8b5cf6, #ec4899, #06b6d4);
    
    /* Text and Backgrounds */
    --text-main: #1e293b;
    --text-muted: #64748b;
    --bg-main: #f4f8fb; /* Light clinical grey-blue */
    --bg-white: #ffffff;
    --border-color: #cbd5e1;
    
    /* Styling elements */
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --shadow-soft: 0 15px 35px -5px rgba(15, 23, 42, 0.08);
    --shadow-glow: 0 0 30px rgba(6, 182, 212, 0.4);
    
    /* Typography */
    --font-serif: 'Merriweather', Georgia, serif;
    --font-sans: 'Open Sans', Arial, sans-serif;
}

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

html {
    scroll-behavior: smooth;
    background-color: var(--bg-main);
    scroll-padding-top: 90px; 
}

body {
    font-family: var(--font-sans);
    color: var(--text-main);
    line-height: 1.7;
    font-size: 16px;
    position: relative;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: all 0.3s ease;
}
a:hover { color: var(--secondary); text-shadow: 0 0 8px rgba(6, 182, 212, 0.5); }

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
}

/* ==========================================================================
   High-Tech Data Grid Background
   ========================================================================== */
.tech-grid {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    background-image: 
        linear-gradient(rgba(59, 130, 246, 0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59, 130, 246, 0.06) 1px, transparent 1px);
    background-size: 40px 40px;
    z-index: -1;
    pointer-events: none;
}

.tech-grid::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: radial-gradient(circle at 50% 50%, transparent 20%, var(--bg-main) 100%);
}

/* ==========================================================================
   Utility Classes (Gradients & Centers)
   ========================================================================== */
.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.gradient-text-light {
    background: linear-gradient(to right, #38bdf8, #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.gradient-icon {
    background: linear-gradient(135deg, var(--secondary), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.color-accent-1 { color: var(--accent-magenta); }
.color-accent-2 { color: var(--secondary); }

/* Custom panel centering to ensure mode badge aligns perfectly */
.text-center-panel {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

/* ==========================================================================
   Top Bar & Navigation
   ========================================================================== */
.top-bar {
    background-color: var(--primary-dark);
    color: #cbd5e1;
    font-size: 0.85rem;
    padding: 10px 0;
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--secondary);
}
.top-bar-content { display: flex; justify-content: space-between; }
.top-bar a { color: var(--secondary); font-weight: 700; }
.top-bar a:hover { color: #fff; }

.academic-nav {
    background-color: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-bottom: 1px solid rgba(255,255,255,0.5);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

.nav-container { display: flex; justify-content: space-between; align-items: center; height: 85px; }

/* Small Nav Logo with Animated Border Color */
.nav-logo-img {
    height: 55px; width: 55px; 
    border-radius: 12px; 
    object-fit: contain; 
    background: white;
    border: 2px solid var(--secondary);
    animation: navBorderPulse 4s infinite alternate;
}
@keyframes navBorderPulse {
    0% { border-color: #06b6d4; box-shadow: 0 0 10px rgba(6, 182, 212, 0.4); }
    50% { border-color: #8b5cf6; box-shadow: 0 0 10px rgba(139, 92, 246, 0.4); }
    100% { border-color: #ec4899; box-shadow: 0 0 10px rgba(236, 72, 153, 0.4); }
}

.logo { font-family: var(--font-serif); font-weight: 900; color: var(--primary-dark); font-size: 1.7rem; }
.logo .year { font-weight: 300; background: var(--gradient-text); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }

.nav-links { list-style: none; display: flex; gap: 35px; }
.nav-links a {
    color: var(--text-muted);
    font-weight: 700;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    padding: 31px 0;
    position: relative;
}
.nav-links a::after {
    content: ''; position: absolute; bottom: 0; left: 0;
    width: 0%; height: 4px;
    background: var(--gradient-btn);
    box-shadow: 0 -2px 10px rgba(59, 130, 246, 0.5);
    transition: width 0.3s ease;
}
.nav-links a.active, .nav-links a:hover { color: var(--primary-dark); }
.nav-links a.active::after, .nav-links a:hover::after { width: 100%; }

.mobile-toggle { display: none; background: none; border: none; font-size: 1.8rem; color: var(--primary); cursor: pointer; }

/* ==========================================================================
   Page Header (Vibrant Banner)
   ========================================================================== */
.page-header {
    background: var(--gradient-main);
    color: var(--bg-white);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
    border-bottom: 5px solid var(--secondary);
}

.header-particles {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background-image: radial-gradient(circle at 20% 50%, rgba(255,255,255,0.1) 0%, transparent 40%),
                      radial-gradient(circle at 80% 30%, rgba(6, 182, 212, 0.3) 0%, transparent 50%);
    z-index: 1;
}

/* 
 * CHANGING COLOR GRADIENT BORDER AROUND MAIN LOGO 
 * Replaces transparent grey border and scanner effect 
 */
.holo-logo-container {
    position: relative;
    width: 220px; height: 220px;
    border-radius: var(--radius-lg);
    padding: 6px; /* Width of the animated border */
    background: linear-gradient(90deg, #06b6d4, #3b82f6, #8b5cf6, #ec4899, #06b6d4);
    background-size: 400% 400%;
    animation: gradientBorderCycle 5s linear infinite;
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.4);
    transform: translateY(-5px);
    display: flex;
    align-items: center;
    justify-content: center;
}
@keyframes gradientBorderCycle {
    0% { background-position: 0% 50%; }
    100% { background-position: 100% 50%; }
}

.header-logo {
    width: 100%; height: 100%;
    border-radius: calc(var(--radius-lg) - 4px); /* Rounding offset inside padding */
    object-fit: contain;
    background-color: white;
    display: block;
}

.workshop-number {
    font-family: var(--font-sans); text-transform: uppercase; letter-spacing: 2.5px;
    font-size: 0.9rem; margin-bottom: 15px; color: #38bdf8; font-weight: 700;
}

.gradient-text-header {
    font-family: var(--font-serif);
    font-size: 2.7rem; font-weight: 700; line-height: 1.3; margin-bottom: 15px;
    background: linear-gradient(to right, #ffffff, #a5f3fc);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    text-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

.page-header h3 {
    font-family: var(--font-serif); font-size: 1.35rem; font-weight: 300;
    color: #e2e8f0; line-height: 1.6;
}

/* ==========================================================================
   Main Layout & High-Tech Glass Cards
   ========================================================================== */
.main-layout { display: grid; grid-template-columns: 2.8fr 1.2fr; gap: 40px; padding: 60px 24px; }

.tech-glass {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.6);
    box-shadow: 0 20px 40px rgba(15, 23, 42, 0.06), inset 0 0 0 1px rgba(255,255,255,1);
    border-radius: var(--radius-lg);
    padding: 40px;
    margin-bottom: 40px;
    position: relative;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.tech-glass:hover { 
    transform: translateY(-4px); 
    box-shadow: 0 25px 50px rgba(15, 23, 42, 0.1), inset 0 0 0 1px rgba(255,255,255,1); 
}

/* Animated Flowing Top Border */
.animated-border {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 4px;
    background: var(--gradient-flow);
    background-size: 200% 100%;
    animation: dataFlow 4s linear infinite;
}
.animated-border.magenta { background: linear-gradient(90deg, #ec4899, #f43f5e, #8b5cf6, #ec4899); background-size: 200% 100%; }
.animated-border.purple { background: linear-gradient(90deg, #8b5cf6, #d946ef, #3b82f6, #8b5cf6); background-size: 200% 100%; }

@keyframes dataFlow { 0% { background-position: 100% 0; } 100% { background-position: -100% 0; } }

/* HUD Corner Brackets */
.hud-bracket {
    position: absolute;
    width: 25px; height: 25px;
    border: 3px solid var(--secondary);
    opacity: 0.3;
    transition: all 0.4s ease;
}
.hud-tl { top: 15px; left: 15px; border-right: none; border-bottom: none; }
.hud-br { bottom: 15px; right: 15px; border-left: none; border-top: none; }

.magenta { border-color: var(--accent-magenta); }
.purple { border-color: var(--accent-purple); }

.tech-glass:hover .hud-bracket { width: 40px; height: 40px; opacity: 1; }

.section-title {
    font-family: var(--font-serif); font-size: 1.8rem; color: var(--primary-dark);
    margin-bottom: 30px; display: flex; align-items: center; gap: 12px;
}

.subsection-title {
    font-family: var(--font-sans); font-size: 1.25rem; color: var(--primary-dark);
    margin: 40px 0 15px; font-weight: 700; display: flex; align-items: center; gap: 10px;
}

.text-content p { margin-bottom: 20px; text-align: justify; color: var(--text-main); font-size: 1.05rem;}
.subtitle-muted { font-style: italic; color: var(--accent-purple) !important; font-weight: 600;}

/* ==========================================================================
   Lists & Tech Bullets
   ========================================================================== */
.colorful-bullets { margin: 25px 0 25px 30px; list-style-type: none; }
.colorful-bullets li {
    margin-bottom: 18px; text-align: justify; position: relative; padding-left: 25px;
}
.colorful-bullets li::before {
    content: '✦'; 
    background: var(--gradient-text); -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    position: absolute; left: 0; top: 2px; font-size: 1.2rem;
}

.committee-list { list-style: none; }
.committee-list li { margin-bottom: 20px; padding-bottom: 15px; border-bottom: 1px dashed var(--border-color); }
.committee-list li:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.committee-list .affiliation { display: block; color: var(--text-muted); font-size: 0.95rem; margin-top: 6px; }

.multi-col { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }
.multi-col li { border-bottom: none; padding-bottom: 0; margin-bottom: 10px; }

/* ==========================================================================
   Sidebar & Panels
   ========================================================================== */
.sidebar-panel { padding: 30px; margin-bottom: 35px; }

.panel-title {
    font-family: var(--font-serif); font-size: 1.2rem; color: var(--primary-dark);
    margin-bottom: 20px; padding-bottom: 12px; border-bottom: 2px solid #e2e8f0;
    display: flex; align-items: center; gap: 10px;
    width: 100%;
}

.dates-table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
.dates-table td { padding: 14px 0; border-bottom: 1px dashed var(--border-color); }
.dates-table tr:last-child td { border-bottom: none; }
.dates-table .event { font-weight: 700; color: var(--primary-dark); }
.dates-table .date { text-align: right; color: var(--text-muted); font-weight: 600;}
.deadline-highlight { color: var(--accent-magenta) !important; font-weight: 800;}

/* Data Readout Countdown */
.countdown-widget {
    margin-top: 20px; background: #ffffff; padding: 18px; text-align: center;
    border-radius: var(--radius-md); border: 1px solid #e2e8f0;
    position: relative; overflow: hidden;
}
.countdown-widget::before {
    content: ''; position: absolute; top: 0; left: 0; width: 4px; height: 100%;
    background: var(--secondary);
}
.countdown-label { 
    display: block; font-size: 0.75rem; text-transform: uppercase; 
    font-weight: 800; letter-spacing: 1.5px; color: var(--text-muted); margin-bottom: 8px; 
}
.countdown-timer { font-family: 'Courier New', monospace; font-size: 1.05rem; font-weight: 900; }

.sidebar-list { margin-left: 20px; margin-top: 15px; margin-bottom: 25px; }

/* Centered Mode Badge */
.mode-badge {
    display: block; width: max-content; margin: 10px auto 0; /* Ensures absolute centering */
    background: var(--gradient-text); color: #fff;
    font-family: var(--font-serif); font-size: 1.3rem; font-weight: 700;
    padding: 12px 30px; border-radius: 50px;
    box-shadow: 0 10px 25px rgba(236, 72, 153, 0.4);
}

/* ==========================================================================
   Buttons with Shimmer Tech Effect
   ========================================================================== */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 10px;
    padding: 14px 24px; font-family: var(--font-sans); font-weight: 700; font-size: 0.95rem;
    text-transform: uppercase; letter-spacing: 1px; text-align: center; cursor: pointer;
    border-radius: var(--radius-md); border: none; transition: all 0.3s ease;
}

.btn-shimmer {
    background: var(--gradient-btn); color: #fff;
    position: relative; overflow: hidden;
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}
.btn-text { position: relative; z-index: 2; }

/* The Shimmer Laser Line */
.btn-shimmer::before {
    content: ''; position: absolute; top: 0; left: -100%; width: 50%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transform: skewX(-20deg); transition: 0.5s; z-index: 1;
}
.btn-shimmer:hover::before { left: 150%; transition: 0.7s; }
.btn-shimmer:hover { transform: translateY(-3px); box-shadow: 0 10px 25px rgba(59, 130, 246, 0.6); }

.btn-outline {
    background-color: transparent; border: 2px solid var(--secondary); color: var(--secondary);
}
.btn-outline:hover {
    background-color: var(--secondary); color: #fff;
    transform: translateY(-3px); box-shadow: 0 6px 15px rgba(6, 182, 212, 0.3);
}

.btn-block { display: flex; width: 100%; }
.mt-10 { margin-top: 10px; }
.mt-15 { margin-top: 15px; }

/* ==========================================================================
   Footer
   ========================================================================== */
.academic-footer {
    background-color: var(--primary-dark); color: #94a3b8;
    padding: 70px 0 25px; font-size: 0.95rem; position: relative;
}
.academic-footer::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 5px;
    background: var(--gradient-flow); background-size: 200% 100%;
    animation: dataFlow 4s linear infinite;
}

.footer-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 50px; margin-bottom: 50px; }
.footer-col h4 { font-family: var(--font-serif); margin-bottom: 25px; font-size: 1.3rem; color: #fff;}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col a { color: #cbd5e1; display: inline-flex; align-items: center; gap: 8px; }
.footer-col a i { color: var(--secondary); }
.footer-col a:hover { color: var(--secondary); transform: translateX(5px); }
.footer-bottom { text-align: center; padding-top: 25px; border-top: 1px solid rgba(255,255,255,0.05); font-size: 0.85rem; }

/* ==========================================================================
   Responsive Logic
   ========================================================================== */
@media (max-width: 1024px) {
    .main-layout { grid-template-columns: 1fr; }
    .sidebar-column { display: grid; grid-template-columns: 1fr 1fr; gap: 25px; }
}

@media (max-width: 768px) {
    .top-bar { display: none; }
    
    .nav-links {
        display: none; flex-direction: column; width: 100%; position: absolute; top: 85px; left: 0;
        background: rgba(255, 255, 255, 0.95); backdrop-filter: blur(15px);
        border-bottom: 1px solid var(--border-color); padding: 10px 0; box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    }
    .nav-links.active { display: flex; }
    .nav-links a { padding: 15px 24px; }
    .nav-links a::after { display: none; }
    .nav-links a.active, .nav-links a:hover { background: rgba(59, 130, 246, 0.05); border-left: 4px solid var(--primary); }
    
    .mobile-toggle { display: block; }
    .sidebar-column { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    
    .gradient-text-header { font-size: 2.1rem; }
    .holo-logo-container { width: 160px; height: 160px; }
}