body {
    margin: 0;
    padding: 0;
    font-family: 'Inter', Arial, sans-serif;
    line-height: 1.6;
    background-color: #000;
}

.features-section {
    background-color: #ffffff;
    padding: 80px 50px;
    color: #000000;
}

.features-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    gap: 30px;
}

.feature-card {
    background: #ffffff;
    border: 1px solid #f0f0f0;
    padding: 40px;
    flex: 1;
    position: relative;
    min-height: 200px;
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-number {
    position: absolute;
    top: 10px;
    right: 20px;
    font-size: 80px;
    font-weight: 800;
    color: #f2f2f2;
    z-index: 1;
    user-select: none;
}

.feature-card h3, .feature-card p {
    position: relative;
    z-index: 2;
}

.main-container {
    background-color: #000000;
    color: #ffffff;
    padding: 80px 50px;
}

.content-wrapper {
    display: flex;
    justify-content: space-between;
    gap: 80px;
    max-width: 1200px;
    margin: 0 auto;
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 40px;
    font-weight: 700;
}

.specs-column { flex: 1; }

.specs-table {
    width: 100%;
    border-collapse: collapse;
}

.specs-table td {
    padding: 15px 0;
    border-bottom: 1px solid #333;
}

.specs-table td:first-child { color: #888; }
.specs-table td:last-child { text-align: right; font-weight: bold; }

.usage-column { flex: 1.5; }

.usage-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.usage-card {
    background-color: #1a1a1a;
    padding: 30px;
    border-radius: 0;
}

.header {
    background-color: #ffff;
}

.order-section-sq {
    background-color: #000;
    padding: 100px 20px;
    display: flex;
    justify-content: center;
    font-family: 'Inter', Arial, sans-serif;
    letter-spacing: 0.05em;
}

.order-container-sq {
    width: 100%;
    max-width: 550px;
    position: relative;
}

.form-title-sq {
    font-size: 2rem;
    font-weight: 800;
    color: #fff;
    text-align: center;
    margin-bottom: 50px;
    text-transform: uppercase;
}

.contact-form-sq {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.form-group-sq input,
.select-trigger {
    width: 100%;
    padding: 18px 20px;
    background: transparent;
    border: 1px solid #333;
    border-radius: 0;
    color: #fff;
    box-sizing: border-box;
    font-size: 14px;
    text-transform: uppercase;
    transition: border-color 0.3s ease;
}

.form-group-sq input::placeholder {
    color: #555;
}

.form-group-sq input:focus {
    outline: none;
    border-color: #fff;
}

.select-trigger {
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #888;
}

.select-trigger:hover {
    border-color: #888;
}

.arrow-icon {
    font-weight: bold;
    color: #fff;
    transition: transform 0.3s ease;
}

.contact-methods-sq {
    margin-top: 10px;
    margin-bottom: 10px;
}

.methods-label {
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 10px;
    text-align: center;
}

.method-tabs {
    display: flex;
    flex-wrap: wrap;
    border: 1px solid #333;
    background: #000;
}

.tab-btn {
    flex: 1 1 auto;
    min-width: 90px;
    cursor: pointer;
    position: relative;
}

.tab-btn input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
    margin: 0;
    appearance: none;
    -webkit-appearance: none;
}

.tab-btn span {
    display: block;
    padding: 15px 5px;
    color: #666;
    font-size: 11px;
    font-weight: 700;
    text-align: center;
    transition: all 0.2s ease;
    border-right: 1px solid #333;
    border-bottom: 1px solid #333;
    text-transform: uppercase;
}

.tab-btn:nth-child(even) span {
    border-right: 1px solid #333;
}

.tab-btn input[type="radio"]:checked + span {
    background-color: #fff;
    color: #000;
}

.tab-btn:last-child span {
    border-right: none;
}

.dynamic-field {
    transition: all 0.4s ease;
    max-height: 100px;
    opacity: 1;
}

.dynamic-field.hidden {
    max-height: 0;
    opacity: 0;
    margin: 0;
    overflow: hidden;
}

.submit-btn-sq {
    width: 100%;
    padding: 20px;
    background: #fff;
    color: #000;
    border: 1px solid #fff;
    border-radius: 0;
    font-size: 16px;
    font-weight: 800;
    text-transform: uppercase;
    cursor: pointer;
    transition: background 0.3s ease, color 0.3s ease;
    margin-top: 10px;
}

.submit-btn-sq:hover {
    background: #000;
    color: #fff;
}

.multiselect-wrapper-sq {
    position: relative;
    border: none !important;
    padding: 0 !important;
    width: 100%;
}

.select-trigger-sq {
    padding: 18px 20px;
    border: 1px solid #333;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    background: #000;
    transition: border-color 0.3s;
    box-sizing: border-box;
}

.select-trigger-sq:hover {
    border-color: #555;
}

.arrow-icon {
    font-size: 10px;
    color: #fff;
    transition: transform 0.3s;
}

.methods-label-sq {
    color: #ffffff;
    font-size: 16px;
    font-weight: 600;
    text-align: center;
    margin: 30px 0 20px 0;
    letter-spacing: 2px;
    text-transform: uppercase;
    display: block;
    width: 100%;
}

.dropdown-side-sq {
    overflow-x: hidden;
    display: none;
    position: absolute;
    top: 100%; 
    left: 0;
    width: 100%; 
    background-color: #000;
    border: 1px solid #fff;
    border-top: none;
    z-index: 1000;
    max-height: 250px;
    overflow-y: auto;
    box-sizing: border-box;
    box-shadow: 0 10px 30px rgba(0,0,0,0.8);
    margin-top: -1px;
}

.dropdown-side-sq.show {
    display: block !important;
}

.check-item-sq {
    display: flex;
    align-items: center;
    padding: 15px 20px;
    cursor: pointer;
    border-bottom: 1px solid #111;
}

.check-item-sq:hover {
    background: #111;
}

.check-item-sq input {
    position: absolute;
    opacity: 0;
}

.check-box-sq {
    height: 16px;
    width: 16px;
    border: 1px solid #555;
    margin-right: 15px;
    position: relative;
    flex-shrink: 0;
}

.check-item-sq input:checked ~ .check-box-sq {
    background: #fff;
    border-color: #fff;
}

.check-item-sq input:checked ~ .check-box-sq:after {
    content: "✓";
    position: absolute;
    color: #000;
    font-size: 12px;
    left: 2px;
    top: -2px;
}

.check-text-sq {
    font-size: 13px;
    color: #ccc;
    text-transform: uppercase;
}

.check-item-sq input:checked ~ .check-text-sq {
    color: #fff;
    font-weight: 600;
}

.input-error-sq {
    border-color: #ff4d4d !important;
    box-shadow: 0 0 8px rgba(255, 77, 77, 0.4);
}

.error-tip-sq {
    color: #ff4d4d;
    font-size: 10px;
    margin-top: 4px;
    text-transform: uppercase;
    font-weight: 500;
    letter-spacing: 0.5px;
    display: block;
    animation: fadeInError 0.3s ease-out;
}

@keyframes fadeInError {
    from { opacity: 0; transform: translateY(-3px); }
    to { opacity: 1; transform: translateY(0); }
}

#selectedLabelSq {
    display: block;
    color: #888;
    font-size: 13px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 85%;
    pointer-events: none;
}

.select-trigger-sq {
    display: flex;
    justify-content: space-between;
    align-items: center;
    overflow: hidden;
}

.captcha-container-sq {
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    padding: 15px;
    border-radius: 0;
    border: 1px solid #444;
    margin-bottom: 20px;
}

#captchaInputSq {
    background: #222;
    border: 1px solid #555;
    color: #fff;
    padding: 5px;
    border-radius: 0;
}

@media (max-width: 600px) {

    .form-core {
        margin-top: 100px;
    }

    .order-section-sq {
        padding: 40px 15px !important;
    }

    .form-title-sq {
        font-size: 1.6rem !important;
        margin-bottom: 30px !important;
    }

    .method-tabs {
        display: grid !important;
        grid-template-columns: 1fr 1fr;
    }

    .tab-btn {
        min-width: 0 !important;
        border: none !important;
    }

    .tab-btn span {
        padding: 15px 5px !important;
        font-size: 10px !important;
        border-right: 1px solid #333 !important;
        border-bottom: 1px solid #333 !important;
    }

    .tab-btn:last-child {
        grid-column: span 2;
    }

    .tab-btn:last-child span {
        border-right: none !important;
    }

    .dropdown-side-sq {
        max-height: 300px !important;
    }

    .check-item-sq {
        padding: 18px 20px !important;
    }

    .check-text-sq {
        font-size: 12px !important;
    }

    .form-group-sq input {
        padding: 16px 15px !important;
        font-size: 13px !important;
    }

    .captcha-container-sq {
        padding: 12px !important;
    }

    .methods-label-sq {
        font-size: 14px !important;
        margin: 20px 0 15px 0 !important;
    }

    .submit-btn-sq {
        padding: 18px !important;
        font-size: 14px !important;
    }
}
@media (max-width: 380px) {
    .method-tabs {
        display: flex !important;
        flex-direction: column !important;
    }

    .tab-btn {
        width: 100% !important;
        display: block !important;
    }

    .tab-btn span {
        width: 100% !important;
        box-sizing: border-box !important;
        border-right: none !important;
        border-bottom: 1px solid #333 !important;
        padding: 15px 10px !important;
        text-align: center !important;
    }

    .tab-btn:last-child span {
        border-bottom: none !important;
    }

    .captcha-container-sq {
        flex-direction: column !important;
        gap: 10px !important;
    }
}