.calculator-card {
    max-width: 550px;
    margin: 0 auto;
    background: linear-gradient(135deg, #00e1ff, #00bfa6);
    color: white;
    border-radius: 20px;
    padding: 3rem 2rem;
    box-shadow: 0 15px 40px rgba(0, 191, 166, 0.4), 0 0 50px rgba(0, 255, 208, 0.3) inset;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
}

.calculator-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 25px 50px rgba(0, 191, 166, 0.6), 0 0 60px rgba(0, 255, 208, 0.4) inset;
}

.calculator-card h2 {
    color: #fff;
    text-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
    font-size: 1.5rem
}

.calculator-card .form-control, .calculator-card .form-select {
    border-radius: 12px;
    border: none;
    box-shadow: 0 2px 10px rgba(0, 255, 208, 0.2);
}

.calculator-card .form-control:focus, .calculator-card .form-select:focus {
    box-shadow: 0 0 10px rgba(0, 255, 208, 0.6);
}

.calculator-card .btn-glow {
    background: #fff;
    color: #000;
    font-weight: 700;
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.6);
    transition: all 0.3s ease;
}

.calculator-card .btn-glow:hover {
    background: #e0f7f4;
    box-shadow: 0 0 30px rgba(255, 255, 255, 0.8);
}

#preactivateAccount {
    width: 1.2em;
    height: 1.2em;
    accent-color: #ffb300;
    box-shadow: 0 0 4px rgba(255, 193, 7, 0.6);
    cursor: pointer;
}

.form-check-label {
    font-size: 1rem;
    font-weight: 500;
    color: #f9f9f9;
    letter-spacing: 0.3px;
    word-wrap: break-word;
    margin-left: 0.6rem;
}

.rent-button-container {
    text-align: center;
    margin-top: 20px;
}

.rent-button {
    display: inline-block;
    background: linear-gradient(135deg, #00c46a, #00a855);
    color: white;
    font-weight: 600;
    font-size: 1.1rem;
    padding: 14px 28px;
    border-radius: 8px;
    text-decoration: none;
    transition: all 0.25s ease;
    box-shadow: 0 4px 12px rgba(0, 200, 100, 0.3);
}

.rent-button:hover {
    background: linear-gradient(135deg, #00d676, #00b85f);
    box-shadow: 0 6px 16px rgba(0, 200, 100, 0.45);
}

.rent-button:active {
    transform: translateY(0);
    box-shadow: 0 3px 8px rgba(0, 200, 100, 0.3);
}

.calculator-result-error {
    font-weight: bold;
    font-size: 1.3rem;
    margin-top: 1rem;
    margin-bottom: 1rem;
    color: #f35b5b !important;
    text-shadow: none !important;
}

.calculator-result-success {
    font-weight: 600;
    font-size: 1.2rem;
    color: #082203 !important;
    text-shadow: none !important;
    background: repeating-linear-gradient(45deg, rgba(0, 0, 0, 0.08), rgba(0, 0, 0, 0.08) 2px, transparent 2px, transparent 6px), repeating-linear-gradient(-45deg, rgba(0, 0, 0, 0.08), rgba(0, 0, 0, 0.08) 2px, transparent 2px, transparent 6px), linear-gradient(135deg, #fffde7, #ffe0b2);
    border: 2px solid #00bfa6;
    border-radius: 12px;
    padding: 0.8rem 1rem;
    box-shadow: 0 3px 8px rgba(0, 191, 166, 0.2);
}


.btn-energy-group {
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
}
.btn-energy {
    background: linear-gradient(135deg, #ffc107, #ff9800);
    color: #000;
    font-weight: 600;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    padding: 0.35rem 0.7rem;
    font-size: 0.85rem;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.2);
    transition: transform 0.2s ease, box-shadow 0.3s ease;
    white-space: nowrap;
}
.btn-energy:hover {
    color: #ffffff;
    box-shadow: 0 0 25px rgba(255, 193, 7, 0.9);
    transform: translateY(-2px);
}
.btn-energy .bi {
    color: inherit;
    font-size: 1em;
    vertical-align: middle;
}

.btn-amount-group .btn-amount {
    flex: 1;
    text-align: center;
}
.btn-amount {
    background: linear-gradient(135deg, #ffc107, #ff9800);
    color: #000;
    font-weight: 600;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    padding: 0.65rem 0.9rem;
    font-size: 0.85rem;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.2);
    transition: transform 0.2s ease, box-shadow 0.3s ease;
    white-space: normal;
    word-break: break-word;
}
.btn-amount:hover {
    color: #000 !important;
    font-weight: 700;
    background: linear-gradient(135deg, #ffd54f, #ffb300);
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 0 0 3px #fff, 0 3px 8px rgba(0, 0, 0, 0.2);
}
.btn-amount:active {
    border-color: rgba(255, 255, 255, 0.3) !important;
    box-shadow: 0 0 0 3px #fff, 0 3px 8px rgba(0, 0, 0, 0.2) !important;
    background: linear-gradient(135deg, #ffd54f, #ffb300);
    color: #000;
}

.btn-amount .bi {
    color: inherit;
    font-size: 1em;
    vertical-align: middle;
}

#durationGroup {
    display: flex;
    width: 100%;
    flex-wrap: wrap;
    gap: 0.4rem;
}

#durationGroup .btn-duration {
    flex: 1;
    font-weight: 600;
    text-align: center;
    background: linear-gradient(135deg, #ffc107, #ff9800);
    color: #000;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    padding: 0.65rem 0.9rem;
    font-size: 0.85rem;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.2);
    transition: transform 0.2s ease, box-shadow 0.3s ease;
    white-space: nowrap;
}

@media (max-width: 576px) {
    #durationGroup .btn-duration {
        flex: 0 0 calc(50% - 0.2rem);
        margin-bottom: 0.4rem;
    }
}

#durationGroup .btn-duration:hover {
    color: #000;
    font-weight: 700;
    background: linear-gradient(135deg, #ffd54f, #ffb300);
}

#durationGroup .btn-duration.active {
    color: #000;
    font-weight: 700;
    background: linear-gradient(135deg, #ffd54f, #ffb300);
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 0 0 3px #fff, 0 3px 8px rgba(0, 0, 0, 0.2);
}

#calcBtn{
    padding: 0.65rem 0.9rem;
}


.btn-api {
    background: linear-gradient(135deg, #ffc107, #ff9800);
    color: #000;
    border: none;
    box-shadow: 0 0 15px rgba(255, 193, 7, 0.6);
    transition: transform 0.2s ease, box-shadow 0.3s ease;
}
.btn-api:hover {
    transform: translateY(-2px);
    color: #000 !important;
    box-shadow: 0 0 25px rgba(255, 193, 7, 0.9);
}

.btn-api2:hover {
    transform: translateY(-2px);
}

.btn-calc {
    background-color: #00e1ff;
    color: black;
    font-weight: bold;
    box-shadow: 0 0 20px rgba(0, 225, 255, 0.7);
    transition: all 0.3s ease;
}

.btn-calc:hover {
    background-color: #00c2e3;
    color: #000 !important;
    box-shadow: 0 0 30px rgba(0, 225, 255, 1);
    transform: translateY(-2px);
}

.contact-card {
    background: #30333c;
    color: #ffffff;
    border: 1px solid rgba(0,0,0,0.05);
    box-shadow: 0 10px 25px rgba(0,0,0,0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.contact-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.12);
}

.contact-list li a {
    display: flex;
    align-items: center;
    font-weight: 500;
    color: #ffffff;
    text-decoration: none;
    transition: color 0.2s ease, transform 0.2s ease;
}
.contact-list li a i {
    font-size: 1.2rem;
    color: #007bff;
}
.contact-list li a:hover {
    color: #007bff;
    transform: translateX(4px);
}

.stat-card {
    background: #fff;
    border: 1px solid rgba(0,0,0,0.05);
    box-shadow: 0 10px 25px rgba(0,0,0,0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.stat-card i {
    font-size: 3rem;
    color: #0d6efd;
}
.stat-card h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}
.stat-card p {
    font-size: 1rem;
}
.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.12);
}

.card-platform {
    padding: 1.5rem 0.75rem;
    min-height: 4rem;
    border: none;
    border-radius: 0.5rem;
    text-align: center;
    color: #ffffff;
    font-size: 0.875rem;
    font-weight: 600;
    word-break: break-word;
    box-shadow: 0 2px 6px rgba(0,0,0,0.12);
    transition: transform 0.3s, box-shadow 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.card-platform:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(0,0,0,0.2);
}

.gradient-1 { background: linear-gradient(135deg, #00e1ff, #007bff); }
.gradient-2 { background: linear-gradient(135deg, #00e1ff, #007bff); }
.gradient-3 { background: linear-gradient(135deg, #00e1ff, #007bff); }

.steps-wrap {
    position: relative;
}
.step-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    background: #ffffff;
    border: 1px solid rgba(0,0,0,0.05);
    border-radius: 1rem;
    padding: 1.5rem;
    box-shadow: 0 10px 25px rgba(0,0,0,0.08);
    transition: transform .3s ease, box-shadow .3s ease;
    height: 100%;
}
.step-card:hover {
    box-shadow: 0 15px 35px rgba(0,0,0,0.12);
}
.step-number {
    width: 48px;
    height: 48px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    background: linear-gradient(135deg, #00e1ff, #007bff);
    color: #fff;
    box-shadow: 0 8px 18px rgba(0, 123, 255, .25);
}
.step-icon {
    font-size: 1.75rem;
    color: #0d6efd;
}
.step-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin: .75rem 0 .25rem;
}
.step-text {
    color: #6c757d;
}
@media (min-width: 992px) {
    .steps-connector {
        position: absolute;
        top: 40px;
        left: 12.5%;
        right: 12.5%;
        height: 2px;
        background: linear-gradient(90deg, rgba(0,225,255,.6), rgba(0,123,255,.6));
        z-index: 0;
    }
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}
.faq-item {
    background: #ffffff;
    border-radius: 12px;
    margin-bottom: 1rem;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}
.faq-item:hover {
    box-shadow: 0 8px 20px rgba(0,0,0,0.12);
}
.faq-question {
    padding: 1.2rem 2rem 1.2rem 1.5rem;
    font-weight: 700;
    font-size: 1.1rem;
    cursor: pointer;
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.faq-icon {
    font-size: 1.5rem;
    font-weight: bold;
    transition: transform 0.3s ease;
}
.faq-item.active .faq-icon {
    transform: rotate(45deg);
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    padding: 0 1.5rem;
    color: #333;
    background: #f9f9f9;
    font-size: 1rem;
    line-height: 1.5;
    transition: max-height 0.4s ease, padding 0.4s ease;
}
.faq-item.active .faq-answer {
    padding: 1rem 1.5rem;
    max-height: 600px;
}