.demo-hero-section {
    background: linear-gradient(180deg, #f0f7ff 0%, #ffffff 100%);
    padding: 80px 0 100px;
    position: relative;
    overflow: hidden;
}

.demo-header {
    text-align: center;
    margin-bottom: 60px;
}

.demo-header h1 {
    font-size: 56px;
    font-weight: 800;
    margin-bottom: 16px;
    line-height: 1.2;
}

.demo-header p {
    font-size: 20px;
    color: #5f6c7b;
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.6;
}

.user-info-section {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    border-radius: 24px;
    padding: 48px;
    margin-bottom: 40px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(0, 150, 255, 0.08);
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.package-section {
    padding: 60px 0 0 0;
    margin-bottom: 40px;
}

.package-section h2 {
    font-size: 36px;
    font-weight: 800;
    color: #0a0a0a;
    margin-bottom: 8px;
    text-align: center;
}

.package-section > p {
    font-size: 18px;
    color: #64748b;
    margin-bottom: 48px;
    text-align: center;
}

.packages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    margin-bottom: 32px;
}

.package-card {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.4s ease;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
    background: #ffffff;
}

.package-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.15);
}

.package-card.selected .package-overlay {
    opacity: 1;
}

.package-card.pkg-plus.selected {
    box-shadow: 0 16px 48px rgba(0, 150, 255, 0.3);
    border: 2px solid #0096ff;
}

.package-card.pkg-pro.selected {
    box-shadow: 0 16px 48px rgba(255, 200, 0, 0.3);
    border: 2px solid #ffc800;
}

.package-card.pkg-virtual.selected {
    box-shadow: 0 16px 48px rgba(255, 72, 93, 0.3);
    border: 2px solid #FF485D;
}

.package-card.pkg-all.selected {
    box-shadow: 0 16px 48px rgba(0, 185, 118, 0.3);
    border: 2px solid #00B976;
}

.package-image {
    position: relative;
    width: 100%;
    height: 220px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 30px;
}

.package-image img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: transform 0.4s ease;
}

.package-card:hover .package-image img {
    transform: scale(1.05);
}

.package-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.1);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.package-radio {
    position: absolute;
    top: 16px;
    right: 16px;
    z-index: 2;
    background: #ffffff;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.package-radio input[type="radio"] {
    width: 22px;
    height: 22px;
    cursor: pointer;
    margin: 0;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    border-radius: 50%;
    border: 2px solid #e2e8f0;
    background: #ffffff;
    position: relative;
    transition: all 0.3s ease;
}

.package-radio input[type="radio"]:checked::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #0096ff;
}

.package-card.pkg-plus .package-image { background: rgba(0, 150, 255, 0.1); }
.package-card.pkg-pro .package-image { background: rgba(255, 200, 0, 0.1); }
.package-card.pkg-virtual .package-image { background: rgba(255, 72, 93, 0.1); }
.package-card.pkg-all .package-image { background: rgba(0, 185, 118, 0.1); }

.package-content {
    padding: 24px;
}

.package-name {
    font-size: 22px;
    font-weight: 700;
    color: #0a0a0a;
    margin-bottom: 8px;
}

.package-addons-count-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
    padding: 10px 14px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.package-addons-count {
    font-size: 14px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.view-addons-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    color: #94a3b8;
    font-size: 14px;
    transition: all 0.3s ease;
    opacity: 0.6;
}

.package-addons-count-wrapper:hover .view-addons-icon {
    opacity: 1;
    transform: translateX(3px);
}

.package-description {
    font-size: 15px;
    color: #64748b;
    line-height: 1.6;
}

.popular-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    z-index: 2;
    background: #ffffff;
    color: #0a0a0a;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.user-info-section h2 {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-info-section > p {
    font-size: 16px;
    color: #64748b;
    margin-bottom: 32px;
    line-height: 1.6;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 12px;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px 14px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 14px;
    transition: all 0.3s ease;
    background: #ffffff;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: #0096ff;
    box-shadow: 0 0 0 3px rgba(0, 150, 255, 0.15);
}

.addons-section {
    background: #ffffff;
    border-radius: 24px;
    padding: 40px;
    margin-bottom: 40px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}

.addons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 16px;
}

.addon-item {
    position: relative;
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: #ffffff;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.addon-item:hover {
    border-color: #0096ff;
    background: linear-gradient(135deg, rgba(0, 150, 255, 0.03) 0%, rgba(0, 150, 255, 0.01) 100%);
    box-shadow: 0 4px 12px rgba(0, 150, 255, 0.12);
}

.addon-item.selected {
    border-color: #0096ff;
    background: linear-gradient(135deg, rgba(0, 150, 255, 0.08) 0%, rgba(0, 150, 255, 0.03) 100%);
    box-shadow: 0 4px 12px rgba(0, 150, 255, 0.2);
}

.addon-item.disabled {
    opacity: 0.6;
    cursor: not-allowed;
    background: #f8fafc;
}

.addon-icon {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    background: linear-gradient(135deg, #f0f7ff 0%, #e6f4ff 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
    transition: all 0.3s ease;
}

.addon-item:hover .addon-icon {
    background: linear-gradient(135deg, #e6f4ff 0%, #dbeafe 100%);
    transform: scale(1.05);
}

.addon-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.addon-checkbox {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: #0096ff;
}

.addon-info {
    flex: 1;
    text-align: left;
}

.addon-name {
    font-size: 15px;
    font-weight: 600;
    color: #0a0a0a;
    line-height: 1.3;
    padding-right: 30px;
}

.included-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: #22c55e;
    font-size: 13px;
    font-weight: 600;
}

.addons-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.addons-tabs {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    flex: 1;
}

.addon-tab {
    padding: 12px 24px;
    background: #f1f5f9;
    border: 2px solid transparent;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    color: #64748b;
    cursor: pointer;
    transition: all 0.3s ease;
}

.addon-tab.active {
    background: #0096ff;
    color: #ffffff;
    border-color: #0096ff;
}

.addon-search-wrapper {
    position: relative;
    min-width: 280px;
    max-width: 350px;
}

.addon-search-wrapper i {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: #94a3b8;
    font-size: 16px;
    pointer-events: none;
}

.addon-search-input {
    width: 100%;
    padding: 12px 16px 12px 46px;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    font-size: 15px;
    color: #0a0a0a;
    transition: all 0.3s ease;
    background: #ffffff;
}

.addon-search-input:focus {
    outline: none;
    border-color: #0096ff;
    background: linear-gradient(135deg, #f0f7ff 0%, #ffffff 100%);
    box-shadow: 0 2px 8px rgba(0, 150, 255, 0.1);
}

.custom-addons-card {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 24px 28px;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border: 2px solid #e2e8f0;
    border-radius: 16px;
    margin-top: 28px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.custom-addons-card:hover {
    border-color: #0096ff;
    background: linear-gradient(135deg, #f0f7ff 0%, #e6f4ff 100%);
    box-shadow: 0 4px 16px rgba(0, 150, 255, 0.1);
}

.custom-addons-card.active {
    border-color: #0096ff;
    background: linear-gradient(135deg, rgba(0, 150, 255, 0.08) 0%, rgba(0, 150, 255, 0.03) 100%);
    box-shadow: 0 4px 16px rgba(0, 150, 255, 0.15);
}

.custom-addons-radio input[type="radio"] {
    width: 22px;
    height: 22px;
    cursor: pointer;
    margin: 0;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    border-radius: 50%;
    border: 2px solid #e2e8f0;
    background: #ffffff;
    position: relative;
    transition: all 0.3s ease;
}

.custom-addons-radio input[type="radio"]:checked {
    border-color: #0096ff;
}

.custom-addons-radio input[type="radio"]:checked::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #0096ff;
}

.duration-section {
    background: #ffffff;
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.06);
}

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

.submit-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 32px;
    background: linear-gradient(135deg, #0096ff 0%, #0077cc 100%);
    color: #ffffff;
    font-size: 15px;
    font-weight: 700;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    box-shadow: 0 6px 18px rgba(0, 150, 255, 0.3);
}

.submit-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 24px rgba(0, 150, 255, 0.4);
}

@media (max-width: 767px) {
    .form-row {
        grid-template-columns: 1fr;
    }

    .demo-hero-section {
        padding: 60px 0;
    }

    .demo-header h1 {
        font-size: 36px;
    }

    .demo-header p {
        font-size: 16px;
    }

    .user-info-section,
    .package-section,
    .addons-section {
        padding: 24px;
    }

    .addons-header {
        flex-direction: column;
        align-items: stretch;
    }

    .addons-tabs {
        overflow-x: auto;
        flex-wrap: nowrap;
        flex: none;
        width: 100%;
    }

    .addon-search-wrapper {
        width: 100%;
        max-width: 100%;
        min-width: auto;
    }
}