:root {
            --primary: #001E61;
            --primary-light: #004BEE;
            --accent-green: #00843E;
            --accent-orange: #F59E0B;
            --accent-blue: #004BEE;
            --accent-gray: #6B7280;
            --text-primary: #222222;
            --text-secondary: #414141;
            --text-muted: #8B8B8B;
            --background: #F2F2F2;
            --white: #FFFFFF;
        }

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

        body {
            font-family: 'Inter', 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            background: var(--background);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            position: relative;
            overflow-x: hidden;
        }

        /* Animated Background */
        .bg-animation {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 0;
            overflow: hidden;
        }

        .bg-circle {
            position: absolute;
            border-radius: 50%;
            opacity: 0.04;
            animation: float 25s ease-in-out infinite;
        }

        .bg-circle:nth-child(1) {
            width: 800px;
            height: 800px;
            background: linear-gradient(135deg, var(--accent-green), var(--accent-blue));
            top: -400px;
            right: -200px;
        }

        .bg-circle:nth-child(2) {
            width: 600px;
            height: 600px;
            background: linear-gradient(135deg, var(--accent-orange), var(--accent-green));
            bottom: -300px;
            left: -200px;
            animation-delay: -10s;
        }

        .bg-circle:nth-child(3) {
            width: 400px;
            height: 400px;
            background: linear-gradient(135deg, var(--primary-light), var(--accent-orange));
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            animation-delay: -5s;
        }

        @keyframes float {
            0%, 100% { transform: translate(0, 0) rotate(0deg) scale(1); }
            25% { transform: translate(50px, -50px) rotate(10deg) scale(1.05); }
            50% { transform: translate(-30px, 30px) rotate(-5deg) scale(0.95); }
            75% { transform: translate(20px, 20px) rotate(5deg) scale(1.02); }
        }

        /* Header */
        header {
            background: #001E61;
            padding: 1.25rem 2rem;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.18);
            position: sticky;
            top: 0;
            z-index: 100;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

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

        .logo-container {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .logo {
            height: 44px;
            width: auto;
            object-fit: contain;
            transition: transform 0.3s ease;
            background: white;
            padding: 4px 10px;
            border-radius: 7px;
        }

        .logo:hover {
            transform: scale(1.05);
        }

        .header-info {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 0.625rem 1.125rem;
            background: rgba(255, 255, 255, 0.12);
            border-radius: 10px;
            border: 1px solid rgba(255, 255, 255, 0.18);
        }

        .header-info-icon {
            width: 32px;
            height: 32px;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .header-info-icon svg {
            width: 16px;
            height: 16px;
            color: white;
        }

        .header-info-text {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.75);
        }

        .header-info-text strong {
            color: rgba(255, 255, 255, 0.95);
        }

        /* Main Content */
        main {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 4rem 2rem;
            position: relative;
            z-index: 1;
        }

        .container {
            max-width: 1300px;
            width: 100%;
        }

        .welcome-section {
            text-align: center;
            margin-bottom: 4rem;
            animation: fadeInDown 0.8s cubic-bezier(0.16, 1, 0.3, 1);
        }

        .welcome-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: linear-gradient(135deg, rgba(0, 72, 238, 0.08), rgba(0, 132, 62, 0.08));
            padding: 0.6rem 1.25rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 1.5rem;
            border: 1px solid rgba(0, 72, 238, 0.15);
        }

        .welcome-badge svg {
            width: 16px;
            height: 16px;
        }

        .welcome-title {
            font-family: 'Outfit', sans-serif;
            font-size: 3.25rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 1rem;
            line-height: 1.15;
            letter-spacing: -1px;
        }

        .welcome-title span {
            background: linear-gradient(135deg, var(--primary-light), var(--accent-green));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .welcome-subtitle {
            font-size: 1.2rem;
            color: var(--text-muted);
            font-weight: 400;
            max-width: 500px;
            margin: 0 auto;
            line-height: 1.6;
        }

        .systems-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.75rem;
            max-width: 1400px;
            margin: 0 auto;
        }

        .system-card {
            background: var(--white);
            border-radius: 16px;
            padding: 2.5rem 2rem;
            box-shadow:
                0 0 0 1px rgba(0, 30, 97, 0.05),
                0 4px 16px rgba(0, 30, 97, 0.07);
            transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
            cursor: pointer;
            text-decoration: none;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .system-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .system-card::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, currentColor 0%, transparent 100%);
            opacity: 0;
            transition: opacity 0.3s ease;
            pointer-events: none;
        }

        .system-card:hover {
            transform: translateY(-12px) scale(1.02);
            box-shadow:
                0 0 0 1px rgba(0, 30, 97, 0.08),
                0 20px 50px rgba(0, 30, 97, 0.12);
        }

        .system-card:hover::before {
            opacity: 1;
        }

        .system-card:hover::after {
            opacity: 0.03;
        }

        .system-card.santa-fe { color: var(--accent-green); }
        .system-card.santa-fe::before { background: linear-gradient(90deg, #006830, var(--accent-green), #00A84F); }

        .system-card.parana { color: var(--accent-orange); }
        .system-card.parana::before { background: linear-gradient(90deg, #D97706, var(--accent-orange), #FBBF24); }

        .system-card.rosario { color: var(--accent-blue); }
        .system-card.rosario::before { background: linear-gradient(90deg, #0035B5, var(--accent-blue), #1E5EFF); }

        .system-card.cordoba { color: var(--accent-gray); }
        .system-card.cordoba::before { background: linear-gradient(90deg, #4B5563, var(--accent-gray), #9CA3AF); }

        .system-icon {
            width: 90px;
            height: 90px;
            border-radius: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.75rem;
            transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
            position: relative;
            z-index: 1;
        }

        .system-icon::before {
            content: '';
            position: absolute;
            inset: -8px;
            border-radius: 30px;
            background: currentColor;
            opacity: 0.08;
            transition: all 0.3s ease;
        }

        .santa-fe .system-icon {
            background: linear-gradient(135deg, #00843E 0%, #00A84F 100%);
            box-shadow: 0 8px 24px rgba(0, 132, 62, 0.3);
        }

        .parana .system-icon {
            background: linear-gradient(135deg, #F59E0B 0%, #FBBF24 100%);
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.3);
        }

        .rosario .system-icon {
            background: linear-gradient(135deg, #0048EE 0%, #1E5EFF 100%);
            box-shadow: 0 8px 24px rgba(0, 72, 238, 0.3);
        }

        .cordoba .system-icon {
            background: linear-gradient(135deg, #6B7280 0%, #9CA3AF 100%);
            box-shadow: 0 8px 24px rgba(107, 114, 128, 0.3);
        }

        .system-card:hover .system-icon {
            transform: scale(1.1) rotate(5deg);
        }

        .system-card:hover .system-icon::before {
            inset: -12px;
            opacity: 0.12;
        }

        .system-icon svg {
            width: 42px;
            height: 42px;
            color: white;
        }

        .system-title {
            font-size: 0.75rem;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--text-muted);
            font-weight: 600;
            margin-bottom: 0.5rem;
        }

        .system-location {
            font-family: 'Outfit', sans-serif;
            font-size: 1.85rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 1rem;
            letter-spacing: -0.5px;
        }

        .system-description {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 1.5rem;
        }

        .system-arrow {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(0, 30, 97, 0.04);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
            margin-top: auto;
        }

        .system-card:hover .system-arrow {
            background: currentColor;
            transform: translateX(5px);
        }

        .system-card:hover .system-arrow svg {
            color: white;
        }

        .system-arrow svg {
            width: 22px;
            height: 22px;
            color: var(--text-primary);
            transition: color 0.3s ease;
        }

        /* Footer */
        footer {
            background: var(--white);
            padding: 2rem;
            text-align: center;
            border-top: 1px solid rgba(0, 30, 97, 0.06);
            position: relative;
            z-index: 1;
        }

        .footer-content {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 2rem;
            flex-wrap: wrap;
        }

        .footer-text {
            color: var(--text-muted);
            font-size: 0.875rem;
        }

        .footer-contact {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9rem;
            text-decoration: none;
            padding: 0.5rem 1rem;
            background: rgba(0, 72, 238, 0.05);
            border-radius: 8px;
            transition: all 0.2s ease;
        }

        .footer-contact:hover {
            background: rgba(0, 72, 238, 0.1);
        }

        .footer-contact svg {
            width: 18px;
            height: 18px;
        }

        /* Animations */
        @keyframes fadeInDown {
            from {
                opacity: 0;
                transform: translateY(-30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .system-card {
            animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) backwards;
        }

        .system-card:nth-child(1) { animation-delay: 0.1s; }
        .system-card:nth-child(2) { animation-delay: 0.2s; }
        .system-card:nth-child(3) { animation-delay: 0.3s; }
        .system-card:nth-child(4) { animation-delay: 0.4s; }

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

        /* Responsive */
        @media (max-width: 1200px) {
            .systems-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .welcome-title {
                font-size: 2.25rem;
            }

            .welcome-subtitle {
                font-size: 1rem;
            }

            .systems-grid {
                grid-template-columns: 1fr;
                gap: 1.25rem;
            }

            .system-card {
                padding: 2rem 1.5rem;
                flex-direction: row;
                text-align: left;
                gap: 1.5rem;
            }

            .system-icon {
                margin-bottom: 0;
                width: 70px;
                height: 70px;
                flex-shrink: 0;
            }

            .system-icon svg {
                width: 32px;
                height: 32px;
            }

            .card-content {
                flex: 1;
            }

            .system-arrow {
                margin-top: 0;
            }

            header {
                padding: 1rem 1.5rem;
            }

            .header-info {
                display: none;
            }

            .logo {
                height: 45px;
            }
        }

        @media (max-width: 480px) {
            main {
                padding: 2rem 1rem;
            }

            .welcome-section {
                margin-bottom: 2.5rem;
            }

            .welcome-title {
                font-size: 1.85rem;
            }

            .welcome-badge {
                font-size: 0.75rem;
                padding: 0.5rem 1rem;
            }

            .system-location {
                font-size: 1.5rem;
            }

            .system-description {
                font-size: 0.875rem;
            }

            .footer-content {
                flex-direction: column;
                gap: 1rem;
            }
        }

        /* Focus styles */
        *:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }

        .system-card:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 4px;
        }

        /* Card with options */
        .system-card.has-options {
            cursor: default;
        }

        .system-card.has-options:hover {
            transform: translateY(-8px);
        }

        .system-card.has-options:hover .system-icon {
            transform: scale(1.05);
        }

        .access-options {
            display: flex;
            gap: 0.75rem;
            margin-top: 1rem;
        }

        .access-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.65rem 1.25rem;
            border-radius: 10px;
            font-size: 0.875rem;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
            flex: 1;
            justify-content: center;
        }

        .access-btn svg {
            width: 18px;
            height: 18px;
        }

        .access-user {
            background: rgba(0, 72, 238, 0.1);
            color: var(--accent-blue);
            border: 1px solid rgba(0, 72, 238, 0.2);
        }

        .access-user:hover {
            background: var(--accent-blue);
            color: white;
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(0, 72, 238, 0.3);
        }

        .access-admin {
            background: rgba(0, 30, 97, 0.07);
            color: #001E61;
            border: 1px solid rgba(0, 30, 97, 0.18);
        }

        .access-admin:hover {
            background: #001E61;
            color: white;
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(0, 30, 97, 0.3);
        }

        @media (max-width: 768px) {
            .access-options {
                flex-direction: column;
                gap: 0.5rem;
            }

            .system-card.has-options {
                flex-direction: column;
                text-align: center;
            }

            .system-card.has-options .system-icon {
                margin-bottom: 1rem;
            }
        }