:root {
    --primary-color: #ff4d4d;
    --secondary-color: #ff6b6b;
    --accent-color: #ff3333;
    --success-color: #00d26a;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --dark-bg: #0f0f0f;
    --card-bg: #1a1a1a;
    --surface-bg: #242424;
    --text-primary: #ffffff;
    --text-secondary: #8892b0;
    --text-muted: #64748b;
    --border-color: #2d2d2d;
    --border-light: #374151;
    --gradient-1: linear-gradient(45deg, #ff4d4d, #ff6b6b);
    --gradient-2: linear-gradient(45deg, #ff3333, #ff4d4d);
    --gradient-3: linear-gradient(45deg, #ff1a1a, #ff3333);
    --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.2), 0 2px 4px -1px rgba(0, 0, 0, 0.1);
    --shadow-elevated: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --glow: 0 0 20px rgba(255, 77, 77, 0.3);
}

body {
    background: var(--dark-bg);
    color: var(--text-primary);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
}


/* Hero Section */

.hero-section {
    background: linear-gradient(rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0.8)), url('assets/images/hero-bg.jpg');
    background-position-x: 0%, 0%;
    background-position-y: 0%, 0%;
    background-size: auto, auto;
    background-size: cover;
    background-position: center;
    padding: 200px 0;
    position: relative;
    overflow: hidden;
}

.cbtn {
    display: flex !important;
}

.hero-section {
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.1), rgba(0, 68, 153, 0.1));
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 20%, rgba(0, 102, 204, 0.1) 0%, transparent 50%), radial-gradient(circle at 70% 80%, rgba(255, 107, 0, 0.1) 0%, transparent 50%);
    opacity: 0.8;
}

.hero-section::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center, rgba(255, 77, 77, 0.2) 0%, transparent 70%);
    pointer-events: none;
    animation: pulse 4s ease-in-out infinite;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    font-weight: 400;
}

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

.feature-list li {
    display: flex;
    align-items: center;
    margin-bottom: 0.75rem;
    font-size: 1rem;
    color: var(--text-secondary);
}

.feature-list li::before {
    content: '✓';
    margin-right: 12px;
    color: var(--success-color);
    font-weight: bold;
    font-size: 1.1rem;
}


/* Section Styling */

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}


/* Product Grid */

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}


/* Product Cards */

.product-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    position: relative;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-card);
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 16px 16px 0 0;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-elevated);
    border-color: var(--primary-color);
}

.product-card.featured {
    border: 2px solid var(--primary-color);
    background: linear-gradient(135deg, var(--card-bg), rgba(255, 77, 77, 0.05));
    box-shadow: 0 0 30px rgba(255, 77, 77, 0.1);
}

.product-card.featured::before {
    background: var(--gradient-primary);
}

.product-header {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.product-name {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.product-price {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.product-card.featured .product-price {
    color: var(--accent-color);
}

.price-period {
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
}

.offer-badge {
    display: inline-block;
    background: var(--gradient-accent);
    color: white;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
    animation: pulse 2s infinite;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.old-price {
    color: var(--text-muted);
    text-decoration: line-through;
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

@keyframes pulse {
    0%,
    100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.02);
    }
}


/* Product Specifications */

.product-specs {
    margin-bottom: 2rem;
}

.spec-category {
    margin-bottom: 1.5rem;
}

.spec-category:last-child {
    margin-bottom: 0;
}

.spec-category h6 {
    color: var(--primary-color);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.8rem;
    font-weight: 600;
}

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

.spec-list li {
    display: flex;
    align-items: center;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.spec-list li::before {
    content: '•';
    color: var(--primary-color);
    margin-right: 8px;
    font-size: 1.2rem;
}


/* Buttons */

.btn-primary {
    border: none;
    color: white;
    padding: 0.875rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s ease;
    width: 100%;
    text-align: center;
    font-size: 1rem;
    cursor: pointer;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 102, 204, 0.3);
    color: white;
    text-decoration: none;
}

.btn-primary:disabled,
.btn-primary.disabled {
    background: var(--surface-bg);
    color: var(--text-muted);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-secondary {
    background: var(--gradient-accent);
    border: none;
    color: white;
    padding: 0.875rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s ease;
    width: 100%;
    text-align: center;
    font-size: 1rem;
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 107, 0, 0.3);
    color: white;
    text-decoration: none;
}

.availability {
    text-align: center;
    margin-top: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.available-count {
    color: var(--success-color);
    font-weight: 700;
}


/* Configurator Styles */

.configurator-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.config-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    margin-top: 2rem;
}

.config-section {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--shadow-card);
}

.config-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
}

.config-title::before {
    content: '';
    width: 4px;
    height: 24px;
    background: var(--gradient-primary);
    margin-right: 12px;
    border-radius: 2px;
}


/* Form Styles */

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

.form-label {
    display: block;
    margin-bottom: 0.8rem;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 1rem;
}

.form-control {
    width: 100%;
    padding: 0.875rem;
    background: var(--surface-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(255, 77, 77, 0.1);
    background: var(--card-bg);
}

.form-control::placeholder {
    color: var(--text-muted);
}


/* Select specific styles */

select.form-control {
    background: var(--surface-bg);
    color: var(--text-primary);
    cursor: pointer;
}

select.form-control option {
    background: var(--surface-bg);
    color: var(--text-primary);
    padding: 0.5rem;
}

select.form-control:focus option:checked,
select.form-control option:checked {
    background: var(--primary-color);
    color: white;
}


/* Webkit select styling */

select.form-control::-webkit-scrollbar {
    width: 8px;
}

select.form-control::-webkit-scrollbar-track {
    background: var(--border-color);
}

select.form-control::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}


/* OS Selection Grid */

.os-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.os-option {
    position: relative;
}

.os-radio {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.os-card {
    background: var(--surface-bg);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    height: 120px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.os-card:hover {
    border-color: var(--primary-color);
    background: var(--card-bg);
}

.os-radio:checked+.os-card {
    border-color: var(--primary-color);
    background: rgba(0, 102, 204, 0.1);
    box-shadow: 0 0 20px rgba(0, 102, 204, 0.15);
}

.os-icon {
    width: 40px;
    height: auto;
    margin-bottom: 0.5rem;
    filter: brightness(0.9);
}

.os-radio:checked+.os-card .os-icon {
    filter: brightness(1.1);
}

.os-name {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
    line-height: 1.3;
}

.os-radio:checked+.os-card .os-name {
    color: var(--primary-color);
    font-weight: 600;
}


/* Node Selection Grid */

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

.node-option {
    position: relative;
}

.node-radio {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.node-card {
    background: var(--surface-bg);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.node-card:hover {
    border-color: var(--primary-color);
    background: var(--card-bg);
}

.node-radio:checked+.node-card {
    border-color: var(--primary-color);
    background: rgba(0, 102, 204, 0.1);
    box-shadow: 0 0 20px rgba(0, 102, 204, 0.15);
}

.node-flag {
    width: 48px;
    height: auto;
    border-radius: 6px;
    margin-bottom: 0.8rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.node-name {
    font-weight: 600;
    margin-bottom: 0.3rem;
    color: var(--text-primary);
    font-size: 1rem;
}

.node-details {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.3;
}

.node-radio:checked+.node-card .node-name {
    color: var(--primary-color);
}


/* Price Summary */

.price-summary {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 0;
    position: sticky;
    top: 2rem;
    box-shadow: var(--shadow-card);
    overflow: hidden;
}

.price-summary-header {
    background: var(--gradient-primary);
    padding: 1.5rem 2rem;
    color: white;
    text-align: center;
}

.price-summary-header h3 {
    margin: 0;
    font-size: 1.4rem;
    font-weight: 600;
}

.price-summary-content {
    padding: 2rem;
}

.product-summary {
    background: var(--surface-bg);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
}

.product-summary-header {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.product-icon {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1rem;
    color: white;
    font-size: 1.5rem;
}

.product-info h4 {
    color: var(--primary-color);
    margin: 0 0 0.3rem 0;
    font-size: 1.2rem;
    font-weight: 600;
}

.product-info .product-subtitle {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin: 0;
}

.summary-specs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.8rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

.summary-specs li {
    display: flex;
    align-items: center;
    color: var(--text-secondary);
    font-size: 0.85rem;
    padding: 0.5rem;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.summary-specs li .spec-icon {
    width: 16px;
    height: 16px;
    margin-right: 8px;
    color: var(--primary-color);
    font-size: 0.8rem;
}

.price-section {
    margin-bottom: 2rem;
}

.price-section-title {
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
}

.price-section-title::before {
    content: '';
    width: 3px;
    height: 16px;
    background: var(--primary-color);
    margin-right: 8px;
    border-radius: 2px;
}

.price-breakdown {
    background: var(--surface-bg);
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid var(--border-color);
}

.price-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.price-row:last-child {
    border-bottom: none;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 2px solid var(--primary-color);
    background: rgba(255, 77, 77, 0.05);
    margin-left: -1.5rem;
    margin-right: -1.5rem;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
    border-radius: 0 0 12px 12px;
}

.price-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
}

.price-label .price-icon {
    width: 16px;
    height: 16px;
    margin-right: 8px;
    color: var(--primary-color);
    font-size: 0.8rem;
}

.price-value {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.95rem;
}

.price-row:last-child .price-label,
.price-row:last-child .price-value {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--primary-color);
}

.discount-row {
    background: rgba(0, 210, 106, 0.05);
    margin-left: -1.5rem;
    margin-right: -1.5rem;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
    border-radius: 8px;
}

.discount-row .price-label,
.discount-row .price-value {
    color: var(--success-color);
    font-weight: 600;
}

.discount-row .price-label::before {
    content: '💰';
    margin-right: 8px;
}

.action-button {
    margin-top: 2rem;
    position: relative;
}

.btn-primary {
    border: none;
    color: white;
    padding: 1rem 2rem;
    border-radius: 12px;
    font-weight: 600;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    width: 100%;
    text-align: center;
    font-size: 1rem;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(255, 77, 77, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 77, 77, 0.3);
    color: white;
    text-decoration: none;
}

.btn-primary i {
    margin-right: 8px;
    font-size: 1.1rem;
}

.security-notice {
    background: rgba(0, 102, 204, 0.1);
    border: 1px solid var(--accent-color);
    border-radius: 8px;
    padding: 1rem;
    margin-top: 1rem;
    text-align: center;
}

.security-notice .security-icon {
    color: var(--accent-color);
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.security-notice p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin: 0;
    line-height: 1.4;
}


/* Checkbox Styles */

.checkbox-group {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.form-check {
    display: flex;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.form-check-input {
    width: 18px;
    height: 18px;
    margin-right: 10px;
    margin-top: 2px;
    accent-color: var(--primary-color);
    cursor: pointer;
}

.form-check-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
    cursor: pointer;
}

.form-check-label a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.form-check-label a:hover {
    text-decoration: underline;
}


/* Responsive Design */

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    .product-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .config-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .configurator-container {
        padding: 1rem;
    }
    .os-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    }
    .node-grid {
        grid-template-columns: 1fr;
    }
    .price-summary {
        position: static;
    }
}


/* Animation Classes */

@keyframes float {
    0% {
        transform: translateY(0px);
    }
    25% {
        transform: translateY(-5px);
    }
    50% {
        transform: translateY(0px);
    }
    75% {
        transform: translateY(5px);
    }
    100% {
        transform: translateY(0px);
    }
}

.fade-in {
    animation: fadeInUp 0.6s ease forwards, float 4s ease-in-out infinite;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}


/* Feature Cards */

.feature-card {
    background: var(--card-bg);
    border-radius: 15px;
    padding: 30px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    animation: float 4s ease-in-out infinite;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-1);
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 0;
}

.feature-card:hover::before {
    opacity: 0.15;
}

.feature-card:hover {
    transform: translateY(-10px) scale(1.02);
    border-color: var(--primary-color);
    box-shadow: var(--glow);
}


/* Pricing Cards with float animation */

.product-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 30px;
    position: relative;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-card);
    backdrop-filter: blur(10px);
    animation: float 4s ease-in-out infinite;
}

.product-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--glow);
    border-color: var(--primary-color);
}

.product-card.featured {
    border: 2px solid var(--primary-color);
    background: linear-gradient(45deg, var(--card-bg), rgba(255, 77, 77, 0.1));
    box-shadow: 0 15px 40px rgba(255, 77, 77, 0.15);
    position: relative;
    overflow: hidden;
}

.product-card.featured::before {
    content: 'Beliebt';
    position: absolute;
    top: 20px;
    right: -35px;
    background: var(--gradient-1);
    color: white;
    padding: 5px 40px;
    transform: rotate(45deg);
    font-size: 0.8rem;
    font-weight: 600;
    box-shadow: 0 2px 10px rgba(255, 77, 77, 0.3);
    text-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}


/* Loading States */

.loading {
    opacity: 0.6;
    pointer-events: none;
}

.spinner {
    border: 2px solid var(--border-color);
    border-top: 2px solid var(--primary-color);
    border-radius: 50%;
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
    display: inline-block;
    margin-right: 8px;
}

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


/* Staggered animations for cards */

.product-card:nth-child(1) {
    animation-delay: 0.2s;
}

.product-card:nth-child(2) {
    animation-delay: 0.7s;
}

.product-card:nth-child(3) {
    animation-delay: 1.2s;
}

.product-card:nth-child(4) {
    animation-delay: 1.7s;
}

.feature-card:nth-child(1) {
    animation-delay: 0s;
}

.feature-card:nth-child(2) {
    animation-delay: 0.5s;
}

.feature-card:nth-child(3) {
    animation-delay: 1s;
}


/* Glass effect for modern look */

.glass-effect {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.text-gradient {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}


/* Enhanced form controls */

.form-control {
    width: 100%;
    padding: 0.875rem;
    background: var(--surface-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(10px);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(255, 77, 77, 0.1), var(--glow);
    background: var(--card-bg);
    transform: translateY(-2px);
}


/* Select specific enhancements */

select.form-control {
    background: var(--surface-bg);
    color: var(--text-primary);
    cursor: pointer;
    position: relative;
}

select.form-control option {
    background: var(--surface-bg);
    color: var(--text-primary);
    padding: 0.5rem;
    border-radius: 4px;
}

select.form-control:focus option:checked,
select.form-control option:checked {
    background: var(--gradient-1);
    color: white;
}


/* Utility Classes */

.text-center {
    text-align: center;
}

.text-primary {
    color: var(--primary-color);
}

.text-success {
    color: var(--success-color);
}

.text-warning {
    color: var(--warning-color);
}

.text-danger {
    color: var(--danger-color);
}

.text-muted {
    color: var(--text-muted);
}

.fw-bold {
    font-weight: 700;
}

.fw-semibold {
    font-weight: 600;
}

.mb-0 {
    margin-bottom: 0;
}

.mt-2 {
    margin-top: 0.5rem;
}

.mb-2 {
    margin-bottom: 0.5rem;
}

.mb-3 {
    margin-bottom: 1rem;
}

.mb-4 {
    margin-bottom: 1.5rem;
}

.mb-5 {
    margin-bottom: 3rem;
}

.d-none {
    display: none;
}

.opacity-50 {
    opacity: 0.5;
}


/* Additional animations and effects */

.pulse {
    animation: pulse 2s ease-in-out infinite;
}

.floating {
    animation: float 3s ease-in-out infinite;
}


/* Enhanced price summary with floating animation */

.price-summary {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 0;
    position: sticky;
    top: 2rem;
    box-shadow: var(--shadow-card);
    overflow: hidden;
    backdrop-filter: blur(10px);
    animation: none !important;
    animation-delay: 0.5s;
}

.price-summary:hover {
    transform: translateY(-5px);
    box-shadow: var(--glow);
    border-color: var(--primary-color);
}


/* Enhanced configurator sections */

.config-section {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--shadow-card);
    backdrop-filter: blur(10px);
    animation: none !important;
    animation-delay: 0.3s;
}

.config-section:hover {
    transform: translateY(-2px);
    box-shadow: var(--glow);
    border-color: rgba(255, 77, 77, 0.3);
}


/* Custom Range Slider for Bandwidth */

.bandwidth-slider-container {
    background: var(--surface-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    margin-top: 0.5rem;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.bandwidth-slider-container:hover {
    border-color: var(--primary-color);
    box-shadow: 0 0 20px rgba(255, 77, 77, 0.1);
}

.bandwidth-range {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--border-color);
    outline: none;
    margin: 1rem 0;
    position: relative;
    cursor: pointer;
    -webkit-appearance: none;
    appearance: none;
}

.bandwidth-range::-webkit-slider-track {
    width: 100%;
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
}

.bandwidth-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--gradient-1);
    cursor: pointer;
    box-shadow: 0 0 15px rgba(255, 77, 77, 0.3);
    transition: all 0.3s ease;
    border: 3px solid white;
}

.bandwidth-range::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 0 25px rgba(255, 77, 77, 0.5);
}

.bandwidth-range::-moz-range-track {
    width: 100%;
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    border: none;
}

.bandwidth-range::-moz-range-thumb {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--gradient-1);
    cursor: pointer;
    box-shadow: 0 0 15px rgba(255, 77, 77, 0.3);
    border: 3px solid white;
    transition: all 0.3s ease;
}

.bandwidth-range::-moz-range-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 0 25px rgba(255, 77, 77, 0.5);
}

.bandwidth-display {
    background: rgba(255, 77, 77, 0.05);
    border: 1px solid rgba(255, 77, 77, 0.2);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1rem;
    text-align: center;
    transition: all 0.3s ease;
}

.bandwidth-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.bandwidth-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1.1rem;
}

.bandwidth-price {
    background: var(--gradient-1);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.9rem;
    box-shadow: 0 2px 8px rgba(255, 77, 77, 0.2);
}

.bandwidth-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.4;
}

.bandwidth-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 0.5rem;
    margin-top: 1rem;
}

.bandwidth-option {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.75rem;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.bandwidth-option::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-1);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.bandwidth-option:hover::before {
    opacity: 0.1;
}

.bandwidth-option.active {
    border-color: var(--primary-color);
    background: rgba(255, 77, 77, 0.1);
    box-shadow: 0 0 15px rgba(255, 77, 77, 0.2);
}

.bandwidth-option.active::before {
    opacity: 0.15;
}

.bandwidth-label {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    font-size: 0.9rem;
    position: relative;
    z-index: 1;
}

.bandwidth-cost {
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 600;
    position: relative;
    z-index: 1;
}

.bandwidth-option.active .bandwidth-label {
    color: var(--primary-color);
}

.bandwidth-option.active .bandwidth-cost {
    color: var(--primary-color);
}


/* Range progress fill */

.bandwidth-range {
    background: linear-gradient(to right, var(--gradient-1) 0%, var(--gradient-1) 0%, var(--border-color) 0%, var(--border-color) 100%);
}


/* Responsive design for bandwidth slider */

@media (max-width: 768px) {
    .bandwidth-options {
        grid-template-columns: 1fr 1fr;
        gap: 0.5rem;
    }
    .bandwidth-info {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
    .bandwidth-range::-webkit-slider-thumb {
        width: 20px;
        height: 20px;
    }
    .bandwidth-range::-moz-range-thumb {
        width: 20px;
        height: 20px;
    }
}