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

        :root {
            --primary-violet: #7c3aed;
            --secondary-violet: #A855F7;
            --light-violet: #C4B5FD;
            --primary-red: #ef4444;
            --secondary-red: #f87171;
            --light-red: #fca5a5;
            --dark-red: #b91c1c;

            --white: #FFFFFF;
            --pearl: #FEFEFE;
            --ghost-white: #FAFAFB;
            --whisper-gray: #F7F8FC;
            --soft-gray: #E2E8F0;
            --slate-gray: #64748B;
            --charcoal: #334155;
            --midnight: #0F172A;

            --font-display: 'Playfair Display', 'Georgia', serif;
            --font-primary: 'Inter', 'Helvetica Neue', sans-serif;
            --font-mono: 'JetBrains Mono', 'Courier New', monospace;

            --space-xs: 0.5rem;
            --space-sm: 1rem;
            --space-md: 1.25rem;
            --space-lg: 2.5rem;
            --space-xl: 4rem;
            --space-2xl: 6rem;

            --radius-soft: 0.75rem;
            --radius-smooth: 1.25rem;
            --radius-elegant: 2rem;

            --shadow-whisper: 0 1px 3px rgba(15, 23, 42, 0.08);
            --shadow-soft: 0 4px 20px rgba(15, 23, 42, 0.12);
            --shadow-elegant: 0 20px 40px rgba(15, 23, 42, 0.15);
            --shadow-dramatic: 0 40px 80px rgba(15, 23, 42, 0.25);
        }

        @import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;500;600;700;800;900&family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

         body {
             font-family: var(--font-primary);
             line-height: 1.7;
             color: var(--charcoal);
             background: linear-gradient(135deg,
                 #f0f9ff 0%,
                 #e0e7ff 25%,
                 #f3e8ff 50%,
                 #ecfdf5 75%,
                 #f0fdf4 100%);
             min-height: 100vh;
             font-weight: 400;
             letter-spacing: -0.01em;
             margin: 0;
         }

        .landing {
            background: url('background_card.webp') no-repeat center/cover;
            min-height: 100vh;
            position: relative;
            display: flex;
            flex-direction: column;
            color: var(--white);
        }

        .landing::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.35);
            z-index: 1;
        }

        .landing * {
            position: relative;
            z-index: 2;
        }

        .header {
            position: fixed;
            top: var(--space-md);
            left: var(--space-md);
            right: var(--space-md);
            z-index: 1000;
            background: rgba(255, 255, 255, 0.332);
            backdrop-filter: blur(25px);
            border: 2px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-elegant);
            box-shadow: var(--shadow-elegant);
            padding: var(--space-sm) var(--space-md);
            overflow: hidden;
        }

        .header-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 50px;
            gap: var(--space-lg);
        }

        .brand {
            display: flex;
            align-items: center;
            gap: var(--space-sm);
        }

        .header-logo-image {
            height: 60px; /* Adjust this value to make it smaller or larger*/
            width: auto; /* Maintains the aspect ratio */
            border-radius: var(--radius-soft);
            margin-right: 10px; /* Adds some space between the logo and the "SF" text */
            vertical-align: middle;
        }

        /* For mobile devices, make it even smaller */
        @media (max-width: 768px) {
            .header-logo-image {
                height: 25px;
            }
        }

        @media (max-width: 480px) {
            .header-logo-image {
                height: 20px;
            }
        }

        .logo {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-soft);
            background: linear-gradient(135deg, var(--white), var(--pearl));
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-display);
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary-violet);
            box-shadow: var(--shadow-soft);
        }

        .brand h1 {
            font-family: var(--font-display);
            font-size: 1.5rem;
            font-weight: 600;
            color: #000000;
            margin: 0;
            letter-spacing: -0.01em;
        }

        .header .brand h1 {
            color: #fff;
        }
        .header.scrolled .brand h1 {
            color: #000;
        }

        .header-nav {
            display: flex;
            gap: var(--space-lg);
            align-items: center;
        }

        .header-nav a {
            color: #ffffff;
            text-decoration: none;
            text-align: center;
            font-weight: 500;
            font-size: 1rem;
            padding: var(--space-sm) var(--space-md);
            border-radius: var(--radius-soft);
            transition: all 0.3s ease;
            position: relative;
            transition: color 0.3s;
            overflow: hidden; /* ensure underline/pseudo elements clip to rounded corners */
        }
        .header.scrolled .header-nav a {
            color: #000000;
        }

        .header-nav a::before {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--primary-violet), var(--primary-red));
            transition: all 0.3s ease;
            transform: translateX(-50%);
        }

        .header-nav a:hover::before {
            width: 100%;
        }

        .header-nav a:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .header-actions {
            display: flex;
            gap: var(--space-sm);
            align-items: center;
            text-align: center;
        }

        /* Hero content */
        .hero-content {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: left;
            padding: calc(100px + var(--space-xl)) var(--space-lg) var(--space-xl);
            max-width: 1200px;
            margin: 0 auto;
            width: 100%;
        }

        .main-title {
            font-family: var(--font-display);
            font-size: clamp(2.7rem, 10vw, 7rem);
            font-weight: 800;
            line-height: 1.1;
            margin-bottom: var(--space-lg);
            background: linear-gradient(135deg, var(--white) 0%, rgba(255,255,255,0.8) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.03em;
        }

        .hero-subtitle {
            font-size: clamp(1.25rem, 3vw, 1.75rem);
            font-weight: 300;
            opacity: 0.95;
            margin-bottom: var(--space-xl);
            letter-spacing: 0.01em;
            line-height: 1.4;
            max-width: 800px;
            margin-right: auto;
        }

        .hero-dates {
            margin: var(--space-lg) 0 var(--space-xl);
        }

        .event-dates {
            font-size: 1.25rem;
            font-weight: 500;
            margin-bottom: var(--space-xs);
            opacity: 0.9;
        }

        .event-location {
            font-size: 1rem;
            opacity: 0.8;
            font-weight: 400;
        }

        /* Buttons */
        .btn {
            font-family: var(--font-primary);
            font-weight: 500;
            border: none;
            border-radius: var(--radius-smooth);
            cursor: pointer;
            transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: var(--space-xs);
            letter-spacing: 0.01em;
            position: relative;
            overflow: hidden;
        }

        .btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
            transition: left 0.6s ease;
        }

        .btn:hover::before {
            left: 100%;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--white) 0%, var(--pearl) 100%);
            color: var(--primary-violet);
            padding: var(--space-md) var(--space-xl);
            font-size: 1.125rem;
            font-weight: 600;
            box-shadow: var(--shadow-elegant);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-dramatic);
        }

        .btn-ghost {
            background: rgba(255, 255, 255, 0.1);
            color: var(--primary-violet);
            border: 1px solid rgba(124, 58, 237, 0.6);
            backdrop-filter: blur(20px);
            padding: var(--space-sm) var(--space-md);
            font-size: 0.875rem;
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.2);
            border-color: rgba(124, 58, 237, 0.6); /* Keep purple border on hover */
            transform: translateY(-1px);
        }

        .header-btn {
            font-size: 0.875rem;
            padding: var(--space-sm) var(--space-md);
        }

        /* Container for content sections */
        .container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 20px;
            min-width: 320px;
        }

        /* About section and beyond */
        .section {
            padding: var(--space-xl) 0;
            background: linear-gradient(135deg,
                 #f0f9ff 0%,
                 #e0e7ff 25%,
                 #f8f6fb 50%,
                 #fee0e0 75%,
                 #ffcaca 100%);
        }

        .section-light {
            background: linear-gradient(135deg, var(--pearl) 0%, var(--whisper-gray) 100%);
        }

        .section-title {
            font-family: var(--font-display);
            font-size: clamp(2.5rem, 6vw, 4rem);
            font-weight: 600;
            text-align: center;
            margin-bottom: var(--space-lg);
            color: var(--midnight);
            letter-spacing: -0.02em;
            line-height: 1.1;
        }

        .section-subtitle {
            font-size: 1.25rem;
            font-weight: 300;
            text-align: center;
            color: var(--slate-gray);
            max-width: 700px;
            margin: 0px auto;
            margin-bottom: var(--space-2xl);
            line-height: 1.6;
        }

        /* YouTube links styling */
        .translation-links {
            text-align: center;
            margin: 0 auto var(--space-2xl);
            max-width: 700px;
            color: var(--slate-gray);
            font-size: 1.1rem;
            line-height: 1.8;
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
        }

        .youtube-link {
            display: inline-flex;
            align-items: center;
            color: var(--primary-violet);
            text-decoration: none;
            transition: all 0.3s ease;
            font-weight: 500;
            margin-top: var(--space-xs);
        }

        .youtube-link:hover {
            color: var(--primary-red);
            transform: translateX(5px);
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: var(--space-xl);
            margin: var(--space-2xl) 0;
        }

        .feature-card {
            background: var(--white);
            padding: var(--space-xl);
            border-radius: var(--radius-elegant);
            box-shadow: var(--shadow-soft);
            border: 1px solid rgba(255, 255, 255, 0.8);
            transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary-violet), var(--primary-red));
            transform: scaleX(0);
            transition: transform 0.4s ease;
        }

        .feature-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-elegant);
        }

        .feature-card:hover::before {
            transform: scaleX(1);
        }

        .feature-icon {
            font-size: 3rem;
            margin-bottom: var(--space-md);
            display: block;
        }

        .feature-title {
            font-family: var(--font-display);
            font-size: 1.5rem;
            font-weight: 600;
            color: var(--midnight);
            margin-bottom: var(--space-sm);
            letter-spacing: -0.01em;
        }

        .feature-description {
            color: var(--slate-gray);
            line-height: 1.7;
            font-weight: 400;
            white-space: pre-line;
        }

        /* Timeline */
        .timeline {
            max-width: 800px;
            margin: 60px auto;
            position: relative;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, var(--primary-violet), var(--primary-red));
            transform: translateX(-50%);
        }

        .timeline-item {
            background: var(--white);
            padding: var(--space-lg);
            margin-bottom: var(--space-lg);
            border-radius: var(--radius-smooth);
            box-shadow: var(--shadow-soft);
            position: relative;
            width: calc(50% - var(--space-md));
            transition: all 0.3s ease;
        }

        .timeline-item:nth-child(odd) {
            margin-left: auto;
            margin-right: calc(50% + var(--space-md));
        }

        .timeline-item:nth-child(even) {
            margin-right: auto;
            margin-left: calc(50% + var(--space-md));
        }

        .timeline-item:hover {
            transform: scale(1.02);
            box-shadow: var(--shadow-elegant);
        }

        .timeline-date {
            text-align: center;
            font-family: var(--font-display);
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--primary-violet);
            margin-bottom: var(--space-xs);
        }

        .timeline-content {
            text-align: center;
            color: var(--charcoal);
            line-height: 1.6;
        }

        .day-link {
            display: block;
            margin: 0 auto;
            color: var(--primary-violet);
            text-decoration: none;
            text-align: center;
            font-weight: 500;
            margin-top: 20px;
            transition: all 0.3s ease;
            border: 1px solid var(--primary-violet);
            border-radius: var(--radius-soft);
            padding: var(--space-xs) var(--space-sm);
            font-size: 0.9rem;
            width: 70%;
        }

        .day-link:hover {
            background-color: var(--primary-violet);
            color: var(--white);
            transform: translateY(-2px);
            box-shadow: var(--shadow-soft);
        }

        .timeline-actions {
            margin-top: var(--space-md);
            display: flex;
            justify-content: center;
        }

        .timeline-btn {
            font-size: 0.875rem;
            padding: var(--space-xs) var(--space-md);
        }

        /* Schedule styles */
        .schedule-container {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.5s ease;
            margin-top: var(--space-md);
            border-top: 1px solid var(--soft-gray);
        }

        .schedule-container.active {
            max-height: 500px; /* Adjust based on content */
            padding-top: var(--space-md);
        }

        .schedule-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .schedule-item {
            display: flex;
            margin-bottom: var(--space-sm);
            font-size: 0.9rem;
        }

        .schedule-time {
            min-width: 100px;
            font-weight: 600;
            color: var(--primary-violet);
        }

        .schedule-description {
            flex: 1;
        }

        /* Footer */
        .footer {
            background: linear-gradient(135deg, var(--charcoal) 0%, var(--charcoal) 100%);
            color: var(--soft-gray);
            padding: var(--space-2xl) 0 var(--space-lg);
            text-align: center;
        }

        .footer-title {
            font-family: var(--font-display);
            font-size: 1.75rem;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: var(--space-md);
        }

        .footer-text {
            font-size: 1rem;
            opacity: 0.8;
            margin-bottom: var(--space-sm);
        }

        /* Partners Footer */
        .partners-footer {
            background: white;
            border-bottom: 1px solid rgba(0, 0, 0, 0.1);
            padding-bottom: var(--space-xl);
            color: var(--charcoal);
        }

        .partners-footer .footer-title {
            color: var(--midnight);
        }

        .partners-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: var(--space-lg);
            margin-top: var(--space-xl);
            justify-items: center;
            align-items: center;
        }

        .partner-logo {
            max-width: 150px;
            max-height: 80px;
            object-fit: contain;
            filter: brightness(1) contrast(1);
            transition: all 0.3s ease;
            margin: var(--space-md);
        }

        .partner-logo:hover {
            filter: brightness(1.1) contrast(1.1);
            transform: scale(1.05);
        }

        /* Main Footer */
        .main-footer {
            padding-top: var(--space-xl);
        }

        /* Mobile responsiveness */
        @media (max-width: 768px) {
            .header {
                top: var(--space-sm);
                left: var(--space-sm);
                right: var(--space-sm);
                padding: var(--space-xs) var(--space-sm);
                border-radius: var(--radius-smooth);
            }

            .partners-grid {
                grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
                gap: var(--space-md);
            }

            .partner-logo {
                max-width: 120px;
                max-height: 60px;
                margin: var(--space-sm);
            }

            .header-content {
                min-height: 40px;
                gap: var(--space-sm);
                flex-wrap: wrap;
            }

            .header-nav {
                gap: var(--space-sm);
                order: 3;
                width: 100%;
                justify-content: center;
                margin-top: var(--space-xs);
            }

            .header-nav a {
                font-size: 0.875rem;
                padding: var(--space-xs) var(--space-sm);
            }

            .logo {
                width: 30px;
                height: 30px;
                font-size: 0.875rem;
            }

            .brand h1 {
                font-size: 1.125rem;
            }

            .header-actions {
                gap: var(--space-xs);
            }

            .header-btn {
                font-size: 0.7rem;
                padding: var(--space-xs) var(--space-sm);
            }

            .hero-content {
                padding: calc(80px + var(--space-lg)) var(--space-md) var(--space-lg);
            }

            .timeline-actions {
                justify-content: center;
            }

            .timeline-btn {
                width: 100%;
                text-align: center;
                justify-content: center;
            }
        }

        @media (max-width: 480px) {
            .header {
                top: var(--space-xs);
                left: var(--space-xs);
                right: var(--space-xs);
                padding: var(--space-xs);
                border-radius: var(--radius-soft);
            }

            .partners-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--space-sm);
            }

            .partner-logo {
                max-width: 100px;
                max-height: 50px;
                margin: var(--space-xs);
            }

            .header-content {
                min-height: 35px;
                gap: var(--space-xs);
            }

            .header-nav {
                gap: var(--space-xs);
            }

            .header-nav a {
                font-size: 0.75rem;
                padding: var(--space-xs);
            }

            .logo {
                width: 25px;
                height: 25px;
                font-size: 0.75rem;
            }

            .brand h1 {
                font-size: 1rem;
            }

            .header-btn {
                font-size: 0.65rem;
                padding: var(--space-xs);
            }

            .timeline::before {
                left: var(--space-md);
            }

            .timeline-item {
                width: calc(100% - var(--space-xl));
                margin-left: var(--space-xl) !important;
                margin-right: 0 !important;
            }

            .features-grid {
                grid-template-columns: 1fr;
                gap: var(--space-lg);
            }
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(40px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .feature-card,
        .timeline-item {
            animation: fadeInUp 0.8s cubic-bezier(0.23, 1, 0.32, 1) forwards;
        }

        .feature-card:nth-child(2) { animation-delay: 0.1s; }
        .feature-card:nth-child(3) { animation-delay: 0.2s; }
        .feature-card:nth-child(4) { animation-delay: 0.3s; }
        .feature-card:nth-child(5) { animation-delay: 0.4s; }
        .feature-card:nth-child(6) { animation-delay: 0.5s; }
        .feature-card:nth-child(7) { animation-delay: 0.6s; }
        .feature-card:nth-child(8) { animation-delay: 0.7s; }
        .feature-card:nth-child(9) { animation-delay: 0.8s; }
        .feature-card:nth-child(10) { animation-delay: 0.9s; }
        .feature-card:nth-child(11) { animation-delay: 1.0s; }
        .feature-card:nth-child(12) { animation-delay: 1.1s; }

        /* Lector cards specific styling */
        #lectors .features-grid {
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: var(--space-lg);
        }

        #lectors .feature-card {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            transition: all 0.3s ease;
        }

        #lectors .feature-icon {
            font-size: 2.5rem;
            margin-bottom: var(--space-xl);
            /* Make the icon container circular */
            width: 250px;
            height: 250px;
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
            background-color: rgba(255, 255, 255, 0.8);
            box-shadow: var(--shadow-soft);
            border: 2px solid var(--light-violet);
            color: var(--primary-violet);
            transition: all 0.3s ease;
        }

        #lectors .feature-icon:hover {
            transform: scale(1.05);
            box-shadow: var(--shadow-elegant);
            border-color: var(--primary-red);
        }

        #lectors .lector-photo {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 50%;
        }

        /* Specific adjustments for Kotelevets's photo */
        #lectors img[alt="Kotelevets Kyrylo"] {
            object-position: center 30%;
        }

        /* Change background color for Kotelevets's photo container */
        #lectors .kotelevets-icon {
            background-color: rgba(220, 210, 255, 0.7); /* lighter violet with opacity */
        }

        #lectors .feature-title {
            margin-bottom: var(--space-sm);
        }

        /* LinkedIn icon styling */
        .linkedin-link {
            margin-top: var(--space-md);
            display: inline-block;
            transition: all 0.3s ease;
        }

        .linkedin-icon {
            width: 24px;
            height: 24px;
            fill: var(--primary-violet);
            transition: all 0.3s ease;
        }

        .linkedin-link:hover .linkedin-icon {
            fill: var(--primary-red);
            transform: scale(1.2);
        }

        .btn-ghost:focus,
        .btn-ghost:active,
        .btn:focus,
        .btn:active {
            outline: none !important;
            box-shadow: none !important;
        }

        html {
            scroll-behavior: smooth;
        }

        .header .brand h1,
        .header-nav a {
            transition: color 0.3s;
        }
        a[href^="mailto:"] {
            color: var(--soft-gray);
            text-decoration: none;
            transition: color 0.3s ease;
        }