:root {
    --primary: #00e5ff;
    --secondary: #7700ff;
    --accent: #ff00cc;
    --dark: #0a0e17;
    --darker: #050811;
    --light: #e0f7fa;
    --card-bg: rgba(16, 20, 31, 0.85);
    --glow: 0 0 15px var(--primary);
    --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

body {
    font-family: 'Exo 2', sans-serif;
    background-color: var(--darker);
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(0, 229, 255, 0.05) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(119, 0, 255, 0.05) 0%, transparent 20%);
    color: var(--light);
    min-height: 100vh;
    overflow-x: hidden;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    padding: 30px 0;
    position: relative;
    margin-bottom: 30px;
}

.title {
    font-family: 'Orbitron', sans-serif;
    font-size: 3.2rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 10px;
    background: linear-gradient(to right, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 0 10px rgba(0, 229, 255, 0.3);
    position: relative;
    display: inline-block;
}

.title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 10%;
    width: 80%;
    height: 3px;
    background: linear-gradient(to right, transparent, var(--primary), transparent);
    border-radius: 2px;
}

.subtitle {
    font-size: 1.2rem;
    color: #a0e7ff;
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.6;
}

.main-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 40px;
}

@media (max-width: 1024px) {
    .main-content {
        grid-template-columns: 1fr;
    }
}

.card {
    background-color: var(--card-bg);
    border-radius: 16px;
    padding: 25px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(0, 229, 255, 0.1);
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.card:hover {
    border-color: rgba(0, 229, 255, 0.3);
    box-shadow: 0 15px 40px rgba(0, 229, 255, 0.1);
    transform: translateY(-5px);
}

.card-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.card-title i {
    color: var(--accent);
}

.product-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 15px;
    max-height: 550px;
    overflow-y: auto;
    padding-right: 10px;
}

.product-list::-webkit-scrollbar {
    width: 8px;
}

.product-list::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 10px;
}

.product-list::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 10px;
}

.product-item {
    background: linear-gradient(145deg, rgba(10, 14, 23, 0.9), rgba(30, 35, 50, 0.9));
    border-radius: 12px;
    padding: 18px 15px;
    display: flex;
    flex-direction: column;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.05);
    position: relative;
    overflow: hidden;
}

.product-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 229, 255, 0.1), transparent);
    transition: left 0.7s;
}

.product-item:hover::before {
    left: 100%;
}

.product-item:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 229, 255, 0.2);
}

.product-item.selected {
    border-color: var(--accent);
    background: linear-gradient(145deg, rgba(119, 0, 255, 0.15), rgba(30, 35, 50, 0.9));
    box-shadow: 0 5px 15px rgba(255, 0, 204, 0.2);
}

.product-name {
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 8px;
    color: #fff;
}

.product-fe {
    font-family: 'Orbitron', sans-serif;
    color: var(--primary);
    font-weight: 700;
    font-size: 1.2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.fe-value {
    background-color: rgba(0, 229, 255, 0.1);
    padding: 3px 10px;
    border-radius: 20px;
    border: 1px solid rgba(0, 229, 255, 0.3);
}

.fe-label {
    font-size: 0.9rem;
    color: #a0e7ff;
}

.calculator-section {
    display: flex;
    flex-direction: column;
}

.selected-products {
    margin-bottom: 25px;
}

.selected-list {
    min-height: 150px;
    max-height: 250px;
    overflow-y: auto;
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: 10px;
    padding: 15px;
    margin-top: 10px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.selected-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 15px;
    background-color: rgba(30, 35, 50, 0.7);
    border-radius: 8px;
    margin-bottom: 10px;
    border-left: 4px solid var(--primary);
}

.selected-item:last-child {
    margin-bottom: 0;
}

.selected-info {
    display: flex;
    flex-direction: column;
}

.selected-name {
    font-weight: 600;
}

.selected-details {
    display: flex;
    gap: 20px;
    color: #a0e7ff;
    font-size: 0.9rem;
}

.selected-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

.quantity-control {
    display: flex;
    align-items: center;
    gap: 10px;
    background-color: rgba(0, 0, 0, 0.3);
    border-radius: 20px;
    padding: 5px 10px;
}

.quantity-btn {
    background-color: transparent;
    border: none;
    color: var(--primary);
    cursor: pointer;
    font-size: 1.2rem;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.quantity-btn:hover {
    background-color: rgba(0, 229, 255, 0.1);
}

.quantity {
    font-family: 'Orbitron', sans-serif;
    font-weight: 600;
    min-width: 30px;
    text-align: center;
}

.remove-btn {
    background-color: rgba(255, 0, 102, 0.1);
    border: none;
    color: #ff0066;
    width: 35px;
    height: 35px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.remove-btn:hover {
    background-color: rgba(255, 0, 102, 0.3);
}

.input-group {
    margin-bottom: 20px;
}

.input-label {
    display: block;
    margin-bottom: 8px;
    color: #a0e7ff;
}

.input-field {
    width: 100%;
    padding: 15px;
    background-color: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(0, 229, 255, 0.2);
    border-radius: 10px;
    color: white;
    font-size: 1.1rem;
    font-family: 'Exo 2', sans-serif;
    transition: var(--transition);
}

.input-field:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: var(--glow);
}

.calculate-btn {
    background: linear-gradient(to right, var(--primary), var(--secondary));
    border: none;
    color: white;
    padding: 18px 30px;
    font-size: 1.2rem;
    font-family: 'Orbitron', sans-serif;
    font-weight: 600;
    border-radius: 12px;
    cursor: pointer;
    transition: var(--transition);
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-top: 10px;
    width: 100%;
}

.calculate-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 229, 255, 0.4);
}

.calculate-btn:active {
    transform: translateY(0);
}

.result-section {
    margin-top: 30px;
    text-align: center;
}

.result-card {
    background: linear-gradient(145deg, rgba(10, 14, 23, 0.95), rgba(30, 35, 50, 0.95));
    border-radius: 16px;
    padding: 30px;
    border: 1px solid rgba(0, 229, 255, 0.2);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    position: relative;
    overflow: hidden;
}

.result-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(to right, var(--primary), var(--accent), var(--secondary));
}

.result-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--primary);
}

.carbon-result {
    font-family: 'Orbitron', sans-serif;
    font-size: 3.5rem;
    font-weight: 900;
    margin: 20px 0;
    background: linear-gradient(to right, #00ffcc, #00e5ff, #0099ff);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 0 20px rgba(0, 229, 255, 0.5);
}

.carbon-equivalent {
    color: #a0e7ff;
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
    margin-bottom: 25px;
}

.result-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.detail-item {
    background-color: rgba(0, 0, 0, 0.2);
    padding: 15px;
    border-radius: 10px;
    border-left: 4px solid var(--secondary);
}

.detail-label {
    font-size: 0.9rem;
    color: #a0e7ff;
    margin-bottom: 5px;
}

.detail-value {
    font-family: 'Orbitron', sans-serif;
    font-weight: 600;
    font-size: 1.3rem;
    color: white;
}

.reset-btn {
    background-color: transparent;
    border: 1px solid var(--accent);
    color: var(--accent);
    padding: 15px 30px;
    font-size: 1.1rem;
    font-family: 'Orbitron', sans-serif;
    border-radius: 10px;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 20px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.reset-btn:hover {
    background-color: rgba(255, 0, 204, 0.1);
    transform: translateY(-3px);
}

footer {
    text-align: center;
    padding: 30px 0;
    margin-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: #a0e7ff;
    font-size: 0.9rem;
}

.footer-text {
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.6;
}

.copyright {
    margin-top: 20px;
    font-family: 'Orbitron', sans-serif;
    color: var(--primary);
    font-weight: 500;
    letter-spacing: 1px;
    padding: 10px;
    border-top: 1px solid rgba(0, 229, 255, 0.2);
    display: inline-block;
}

.copyright i {
    color: var(--accent);
    margin-right: 8px;
}

.notification {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--card-bg);
    border-left: 5px solid var(--primary);
    padding: 15px 20px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    gap: 10px;
    transform: translateX(150%);
    transition: transform 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    z-index: 1000;
    max-width: 350px;
}

.notification.show {
    transform: translateX(0);
}

.notification i {
    color: var(--primary);
    font-size: 1.5rem;
}

@media (max-width: 768px) {
    .title {
        font-size: 2.5rem;
    }
    
    .main-content {
        gap: 20px;
    }
    
    .card {
        padding: 20px;
    }
    
    .product-list {
        grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
    }
    
    .carbon-result {
        font-size: 2.8rem;
    }
}

@media (max-width: 480px) {
    .title {
        font-size: 2rem;
    }
    
    .container {
        padding: 15px;
    }
    
    .product-list {
        grid-template-columns: 1fr;
    }
    
    .selected-details {
        flex-direction: column;
        gap: 5px;
    }
    
    .carbon-result {
        font-size: 2.2rem;
    }
}