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

        :root {
            --white: #FFFFFF;
            --light-blue: #5BC0EB;
            --pale-blue: #D8F2FF;
            --medical-green: #A3D9A5;
            --navy: #1E2A38;
            --orange: #FFA726;
            --orange-hover: #FFB74D;
            --error: #e74c3c;
            --success: #27ae60;
            --glass-bg: rgba(255, 255, 255, 0.25);
            --glass-border: rgba(255, 255, 255, 0.18);
        }

        body {
            font-family: 'Open Sans', sans-serif;
            line-height: 1.6;
            color: var(--navy);
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            overflow-x: hidden;
        }

        /* Animated background particles */
        .bg-animation {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
            opacity: 0.6;
        }

        .particle {
            position: absolute;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            animation: float 6s ease-in-out infinite;
        }

        @keyframes float {
            0%, 100% { transform: translateY(0px) rotate(0deg); }
            50% { transform: translateY(-20px) rotate(180deg); }
        }

        /* Header */
        header {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.2);
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
            transition: all 0.3s ease;
        }

        header.scrolled {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(20px);
        }

        header.scrolled .nav-menu a {
            color: var(--navy);
        }

        header.scrolled .logo {
            background: linear-gradient(45deg, var(--light-blue), var(--medical-green));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        nav {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1.5rem 3rem;
        }

        .logo {
            font-family: 'Montserrat', sans-serif;
            font-weight: 700;
            font-size: 1.8rem;
            background: linear-gradient(45deg, var(--light-blue), var(--medical-green));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none;
            transition: all 0.3s ease;
        }

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

        .nav-menu {
            display: flex;
            list-style: none;
            gap: 2.5rem;
        }

        .nav-menu a {
            text-decoration: none;
            color: var(--white);
            font-weight: 600;
            font-size: 1rem;
            transition: all 0.3s ease;
            position: relative;
            padding: 0.5rem 0;
        }

        .nav-menu a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(45deg, var(--light-blue), var(--medical-green));
            transition: width 0.3s ease;
        }

        .nav-menu a:hover::after {
            width: 100%;
        }

        /* Hero Section */
        .hero {
            background: linear-gradient(135deg, rgba(91, 192, 235, 0.9) 0%, rgba(163, 217, 165, 0.9) 100%);
            padding: 140px 3rem 80px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
            animation: rotate 20s linear infinite;
        }

        @keyframes rotate {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        .hero-content {
            max-width: 1200px;
            margin: 0 auto;
            position: relative;
            z-index: 2;
        }

        .hero h1 {
            font-family: 'Montserrat', sans-serif;
            font-weight: 700;
            font-size: 3rem;
            color: var(--white);
            margin-bottom: 1rem;
            text-shadow: 0 4px 20px rgba(0,0,0,0.3);
            animation: slideInUp 1s ease-out;
        }

        @keyframes slideInUp {
            from {
                opacity: 0;
                transform: translateY(50px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .hero p {
            font-size: 1.2rem;
            color: var(--white);
            margin-bottom: 2rem;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
            opacity: 0.95;
            animation: slideInUp 1s ease-out 0.2s both;
        }

        /* Main Content */
        .main-content {
            padding: 80px 3rem;
            background: var(--white);
            position: relative;
        }

        .main-content::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 100px;
            background: linear-gradient(to bottom, rgba(91, 192, 235, 0.1), transparent);
        }

        .content-container {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 5rem;
            align-items: start;
        }

        /* Calculator Section */
        .calculator-section {
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(20px);
            padding: 3rem;
            border-radius: 24px;
            border: 1px solid rgba(255, 255, 255, 0.3);
            box-shadow: 0 20px 60px rgba(0,0,0,0.1);
            position: relative;
            overflow: hidden;
        }

        .calculator-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(45deg, var(--light-blue), var(--medical-green));
        }

        .calculator-section h2 {
            font-family: 'Montserrat', sans-serif;
            font-weight: 700;
            font-size: 2rem;
            background: linear-gradient(45deg, var(--navy), var(--light-blue));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 2rem;
            text-align: center;
        }

        .form-group {
            margin-bottom: 2rem;
        }

        .form-group label {
            display: block;
            font-weight: 600;
            color: var(--navy);
            margin-bottom: 0.5rem;
            font-size: 1rem;
        }

        .form-group input {
            width: 100%;
            padding: 1rem;
            border: 2px solid rgba(91, 192, 235, 0.3);
            border-radius: 12px;
            font-size: 1rem;
            transition: all 0.3s ease;
            background: rgba(255, 255, 255, 0.8);
            color: var(--navy);
        }

        .form-group input:focus {
            outline: none;
            border-color: var(--light-blue);
            box-shadow: 0 0 0 3px rgba(91, 192, 235, 0.1);
            background: var(--white);
        }

        .calculate-btn {
            width: 100%;
            background: linear-gradient(45deg, var(--orange), var(--orange-hover));
            color: var(--white);
            padding: 1rem 2rem;
            border: none;
            border-radius: 12px;
            font-family: 'Montserrat', sans-serif;
            font-weight: 700;
            font-size: 1.1rem;
            cursor: pointer;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .calculate-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 0.5s ease;
        }

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

        .calculate-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(255, 167, 38, 0.4);
        }

        .result {
            margin-top: 2rem;
            padding: 1.5rem;
            background: linear-gradient(45deg, var(--medical-green), var(--light-blue));
            color: var(--white);
            border-radius: 12px;
            text-align: center;
            font-weight: 600;
            font-size: 1.2rem;
            box-shadow: 0 10px 30px rgba(163, 217, 165, 0.3);
            opacity: 0;
            transform: translateY(20px);
            transition: all 0.5s ease;
        }

        .result.show {
            opacity: 1;
            transform: translateY(0);
        }

        .note {
            margin-top: 1rem;
            padding: 1rem;
            background: rgba(91, 192, 235, 0.1);
            border-left: 4px solid var(--light-blue);
            border-radius: 8px;
            font-size: 0.9rem;
            color: var(--navy);
            opacity: 0.8;
        }

        /* Contact Section */
        .contact-section {
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(20px);
            padding: 3rem;
            border-radius: 24px;
            border: 1px solid rgba(255, 255, 255, 0.3);
            box-shadow: 0 20px 60px rgba(0,0,0,0.1);
            position: relative;
            overflow: hidden;
        }

        .contact-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(45deg, var(--medical-green), var(--light-blue));
        }

        .contact-section h2 {
            font-family: 'Montserrat', sans-serif;
            font-weight: 700;
            font-size: 2rem;
            background: linear-gradient(45deg, var(--navy), var(--light-blue));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 2rem;
            text-align: center;
        }

        .contact-info {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }

        .contact-item {
            display: flex;
            align-items: center;
            padding: 1.5rem;
            background: rgba(91, 192, 235, 0.1);
            border-radius: 16px;
            transition: all 0.3s ease;
            border: 1px solid rgba(91, 192, 235, 0.2);
        }

        .contact-item:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(91, 192, 235, 0.2);
            background: rgba(91, 192, 235, 0.15);
        }

        .contact-icon {
            width: 60px;
            height: 60px;
            background: linear-gradient(45deg, var(--light-blue), var(--medical-green));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 1.5rem;
            font-size: 1.5rem;
            color: var(--white);
            box-shadow: 0 8px 25px rgba(91, 192, 235, 0.3);
            transition: all 0.3s ease;
        }

        .contact-item:hover .contact-icon {
            transform: scale(1.1) rotate(360deg);
        }

        .contact-details h3 {
            font-family: 'Montserrat', sans-serif;
            font-weight: 600;
            color: var(--navy);
            margin-bottom: 0.5rem;
            font-size: 1.2rem;
        }

        .contact-details p {
            color: var(--navy);
            opacity: 0.8;
            font-size: 1rem;
            line-height: 1.5;
        }

        .contact-details a {
            color: var(--light-blue);
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
        }

        .contact-details a:hover {
            color: var(--medical-green);
            text-decoration: underline;
        }

        /* Additional Info Section */
        .additional-info {
            margin-top: 3rem;
            padding: 3rem;
            background: linear-gradient(135deg, var(--pale-blue) 0%, rgba(163, 217, 165, 0.3) 100%);
            border-radius: 24px;
            text-align: center;
        }

        .additional-info h2 {
            font-family: 'Montserrat', sans-serif;
            font-weight: 700;
            font-size: 2rem;
            background: linear-gradient(45deg, var(--navy), var(--light-blue));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 2rem;
        }

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

        .info-card {
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(20px);
            padding: 2rem;
            border-radius: 16px;
            border: 1px solid rgba(255, 255, 255, 0.3);
            transition: all 0.3s ease;
        }

        .info-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(0,0,0,0.1);
            background: rgba(255, 255, 255, 0.95);
        }

        .info-card h3 {
            font-family: 'Montserrat', sans-serif;
            font-weight: 600;
            color: var(--navy);
            margin-bottom: 1rem;
            font-size: 1.3rem;
        }

        .info-card p {
            color: var(--navy);
            opacity: 0.8;
            line-height: 1.6;
        }

        /* CTA Button */
        .cta-button {
            display: inline-block;
            background: linear-gradient(45deg, var(--orange), var(--orange-hover));
            color: var(--white);
            padding: 1rem 2rem;
            text-decoration: none;
            border-radius: 12px;
            font-family: 'Montserrat', sans-serif;
            font-weight: 700;
            font-size: 1rem;
            transition: all 0.3s ease;
            margin-top: 2rem;
            position: relative;
            overflow: hidden;
        }

        .cta-button::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 0.5s ease;
        }

        .cta-button:hover::before {
            left: 100%;
        }

        .cta-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(255, 167, 38, 0.4);
        }

        /* Footer */
        footer {
            background: linear-gradient(135deg, #1a1a1a 0%, var(--navy) 100%);
            color: var(--white);
            padding: 3rem;
            text-align: center;
            position: relative;
        }

        .footer-content {
            max-width: 1400px;
            margin: 0 auto;
        }

        .footer-content p {
            opacity: 0.8;
            font-size: 1rem;
            line-height: 1.6;
        }

        /* Mobile Responsiveness */
        @media (max-width: 1024px) {
            .content-container {
                grid-template-columns: 1fr;
                gap: 3rem;
            }
            
            nav {
                padding: 1rem 2rem;
            }
        }

        @media (max-width: 768px) {
            .hero {
                padding: 120px 2rem 60px;
            }

            .hero h1 {
                font-size: 2.5rem;
            }

            .main-content {
                padding: 60px 2rem;
            }

            .calculator-section,
            .contact-section {
                padding: 2rem;
            }

            .calculator-section h2,
            .contact-section h2 {
                font-size: 1.8rem;
            }

            .additional-info {
                padding: 2rem;
                margin-top: 2rem;
            }

            .info-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
        }

        @media (max-width: 650px) {
            .nav-menu {
                display: none;
            }

            nav {
                justify-content: center;
                padding: 1rem;
            }

            .hero {
                padding: 100px 1rem 50px;
            }

            .hero h1 {
                font-size: 2rem;
            }

            .main-content {
                padding: 50px 1rem;
            }

            .calculator-section,
            .contact-section {
                padding: 1.5rem;
            }

            .contact-item {
                flex-direction: column;
                text-align: center;
            }

            .contact-icon {
                margin-right: 0;
                margin-bottom: 1rem;
            }

            .additional-info {
                padding: 1.5rem;
            }
        }
  

        /* Dodaj to do swojego istniejącego CSS */

/* Room Selector Styles */
.form-group {
    margin-bottom: 2rem;
}

.form-group label {
    display: block;
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    color: var(--navy);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.room-selector {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 1rem;
}

.room-control-btn {
    width: 50px;
    height: 50px;
    border: 2px solid var(--light-blue);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--light-blue);
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(91, 192, 235, 0.2);
    position: relative;
    overflow: hidden;
}

.room-control-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, var(--light-blue), var(--medical-green));
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: 50%;
}

.room-control-btn:hover::before {
    opacity: 1;
}

.room-control-btn:hover {
    transform: scale(1.1);
    border-color: var(--medical-green);
    box-shadow: 0 8px 25px rgba(91, 192, 235, 0.4);
    color: var(--white);
}

.room-control-btn:active {
    transform: scale(0.95);
}

.room-control-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none;
}

.room-control-btn:disabled:hover {
    transform: none;
    box-shadow: 0 4px 15px rgba(91, 192, 235, 0.2);
}

.room-display {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border: 2px solid var(--pale-blue);
    border-radius: 15px;
    padding: 1rem 2rem;
    min-width: 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.room-display::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(45deg, var(--light-blue), var(--medical-green));
}

.room-number {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    font-size: 2rem;
    color: var(--navy);
    margin: 0;
    line-height: 1;
}

.room-label {
    font-size: 0.9rem;
    color: var(--navy);
    opacity: 0.7;
    margin: 0.5rem 0 0 0;
    font-weight: 500;
}

/* Animation for number changes */
.room-number.changing {
    animation: numberPulse 0.3s ease;
}

@keyframes numberPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.2); color: var(--light-blue); }
    100% { transform: scale(1); }
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .room-selector {
        gap: 0.8rem;
    }
    
    .room-control-btn {
        width: 45px;
        height: 45px;
        font-size: 1.3rem;
    }
    
    .room-display {
        padding: 0.8rem 1.5rem;
        min-width: 80px;
    }
    
    .room-number {
        font-size: 1.8rem;
    }
}

@media (max-width: 480px) {
    .room-selector {
        gap: 0.6rem;
    }
    
    .room-control-btn {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
    
    .room-display {
        padding: 0.6rem 1rem;
        min-width: 70px;
    }
    
    .room-number {
        font-size: 1.5rem;
    }
    
    .room-label {
        font-size: 0.8rem;
    }
}