:root {
    --aqtc-blue: #179ede;
    --aqtc-blue-dark: #0f86be;
    --aqtc-blue-rgb: 23, 158, 222;
    --aqtc-ink: #0f172a;
    --aqtc-muted: #64748b;
    --aqtc-border: rgba(var(--aqtc-blue-rgb), 0.18);
}

.aqtc-calculator-shell {
    width: 100%;
    box-sizing: border-box;
    font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.aqtc-calculator-shell *,
.aqtc-calculator-shell *::before,
.aqtc-calculator-shell *::after {
    box-sizing: border-box;
}

.aqtc-calculator-card {
    position: relative;
    overflow: hidden;
    width: 100%;
    max-width: 980px;
    margin: 0 auto;
    padding: clamp(14px, 2vw, 20px);
    border-radius: 16px;
    border: 1px solid var(--aqtc-border);
    background:
        radial-gradient(circle at top right, rgba(var(--aqtc-blue-rgb), 0.10), transparent 28%),
        linear-gradient(135deg, rgba(255,255,255,0.98), rgba(250,253,255,0.98));
    box-shadow: 0 16px 45px rgba(15, 23, 42, 0.075);
    backdrop-filter: blur(10px);
}

.aqtc-route-card {
    padding: clamp(14px, 1.8vw, 22px) clamp(16px, 2.4vw, 24px);
}

.aqtc-heading-wrap {
    margin-bottom: 12px;
    max-width: 720px;
}

.aqtc-heading-wrap h3 {
    margin: 0 0 5px;
    color: var(--aqtc-ink);
    font-size: clamp(18px, 2vw, 24px);
    line-height: 1.12;
    font-weight: 900;
}

.aqtc-heading-wrap p {
    margin: 0;
    color: var(--aqtc-muted);
    font-size: 13px;
    line-height: 1.45;
}

.aqtc-route-form {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 24px;
    align-items: end;
}

.aqtc-field {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.aqtc-field span:not(.screen-reader-text) {
    color: #0f172a;
    font-size: 12px;
    line-height: 1;
    font-weight: 700;
}

.aqtc-field input,
.aqtc-field select {
    width: 100%;
    height: 50px;
    min-height: 50px;
    padding: 0 14px;
    border: 1px solid rgba(15, 23, 42, 0.24) !important;
    border-radius: 8px !important;
    color: #0f172a;
    background-color: #fff;
    font-size: 14px;
    font-weight: 550;
    outline: none;
    box-shadow: none;
    transition: border-color .18s ease, box-shadow .18s ease;
}

.aqtc-field select {
    appearance: auto;
    cursor: pointer;
}

.aqtc-field input:focus,
.aqtc-field select:focus {
    border-color: var(--aqtc-blue) !important;
    box-shadow: 0 0 0 3px rgba(var(--aqtc-blue-rgb), 0.14) !important;
}

.aqtc-field input::placeholder,
.aqtc-field select:invalid {
    color: #9aa4b2;
    font-weight: 500;
}

.aqtc-date-field input {
    padding-top: 15px;
}

.aqtc-date-field span {
    position: absolute;
    top: 8px;
    left: 13px;
    z-index: 1;
    background: transparent;
}

.aqtc-submit-btn {
    grid-column: 2 / 3;
    justify-self: end;
    width: min(150px, 100%);
    height: 50px;
    min-height: 50px;
    padding: 0 22px;
    border: 0;
    border-radius: 4px !important;
    color: #fff;
    background: linear-gradient(135deg, var(--aqtc-blue), var(--aqtc-blue-dark));
    box-shadow: 0 13px 28px rgba(var(--aqtc-blue-rgb), 0.24);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 800;
    cursor: pointer;
    white-space: nowrap;
    transition: transform .18s ease, box-shadow .18s ease;
    margin-top: 28px;
}

.aqtc-submit-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 17px 34px rgba(var(--aqtc-blue-rgb), 0.30);
}

.aqtc-result {
    margin-top: 12px;
    padding: 10px 14px;
    min-height: 54px;
    border: 1px solid rgba(var(--aqtc-blue-rgb), 0.16);
    border-radius: 12px !important;
    background: rgba(255, 255, 255, 0.76);
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 3px 14px;
    align-items: center;
}

.aqtc-result-label {
    color: var(--aqtc-muted);
    font-size: 11px;
    font-weight: 850;
    text-transform: uppercase;
    letter-spacing: .05em;
}

.aqtc-result-price {
    color: var(--aqtc-blue-dark);
    font-size: clamp(20px, 2.4vw, 28px);
    line-height: 1;
    font-weight: 950;
    text-align: right;
}

.aqtc-result-note {
    grid-column: 1 / -1;
    margin: 0;
    color: var(--aqtc-muted);
    font-size: 12px;
}

.aqtc-result.aqtc-success {
    border-color: rgba(34, 197, 94, 0.28);
}

.aqtc-result.aqtc-error {
    border-color: rgba(239, 68, 68, 0.28);
}

.aqtc-empty-state {
    background: #fff;
    color: var(--aqtc-muted);
    border: 1px dashed rgba(var(--aqtc-blue-rgb), 0.28);
    border-radius: 12px !important;
    padding: 16px;
}

@media (min-width: 980px) {
    .aqtc-route-form {
        gap: 12px 24px;
    }
}

@media (max-width: 767px) {
    .aqtc-calculator-card {
        border-radius: 14px;
    }
    .aqtc-route-form,
    .aqtc-result {
        grid-template-columns: 1fr;
    }
    .aqtc-submit-btn {
        grid-column: 1 / -1;
        justify-self: stretch;
        width: 100%;
        margin-top: 2px;
    }
    .aqtc-result-price {
        text-align: left;
    }
}