*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: system-ui, -apple-system, sans-serif;
    background: linear-gradient(180deg, #f8fafc 0%, #eef2f7 100%);
    color: #1f2937;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem 1rem;
}

.container {
    width: 100%;
    max-width: 900px;
}

header {
    text-align: center;
    margin-bottom: 2rem;
}

header h1 {
    font-size: 1.6rem;
    font-weight: 700;
    color: #0f172a;
}

header p {
    color: #475569;
    margin-top: 0.4rem;
    font-size: 0.9rem;
}

.card {
    background: #ffffff;
    border: 1px solid #dbe3ee;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
}

.tabs {
    display: flex;
    gap: 0.6rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.tab-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 0.8rem;
    border-radius: 999px;
    border: 1px solid #cbd5e1;
    text-decoration: none;
    color: #334155;
    font-size: 0.85rem;
    font-weight: 600;
    transition: all 0.15s;
    background: #f8fafc;
}

.tab-link:hover {
    border-color: #38bdf8;
    color: #0c4a6e;
}

.tab-link.is-active {
    background: #e0f2fe;
    border-color: #38bdf8;
    color: #0c4a6e;
}

label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: #475569;
    margin-bottom: 0.4rem;
}

input[type="text"],
input[type="number"],
input[type="file"],
select,
textarea {
    width: 100%;
    background: #ffffff;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    color: #0f172a;
    font-size: 0.95rem;
    padding: 0.65rem 0.85rem;
    outline: none;
    transition: border-color 0.15s;
}

input[type="text"]:focus,
input[type="number"]:focus,
input[type="file"]:focus,
select:focus,
textarea:focus {
    border-color: #0ea5e9;
}

textarea {
    resize: vertical;
    min-height: 100px;
}

input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

input[type="number"] {
    appearance: textfield;
    -moz-appearance: textfield;
}

select {
    cursor: pointer;
    appearance: none;
    background-image: none;
    background-repeat: no-repeat;
    background-position: right 0.85rem center;
    padding-right: 2.2rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.radio-inline-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.4rem;
}

.radio-inline-option {
    display: inline-flex;
    align-items: center;
    position: relative;
    font-size: 0.92rem;
    margin-bottom: 0;
    text-transform: none;
    letter-spacing: normal;
    cursor: pointer;
}

.radio-inline-option input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.radio-inline-option span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2rem;
    padding: 0.35rem 0.7rem;
    border: 1px solid #d4d7dd;
    border-radius: 999px;
    background: #f8fafc;
    color: #334155;
    font-weight: 500;
    transition: all 0.15s ease;
}

.radio-inline-option:hover span {
    border-color: #7dd3fc;
    background: #f0f9ff;
}

.radio-inline-option input:focus-visible + span {
    outline: 2px solid #38bdf8;
    outline-offset: 2px;
}

.radio-inline-option input:checked + span {
    background: #0ea5e9;
    border-color: #0284c7;
    color: #ffffff;
}

.ask-pricing-form {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.ask-pricing-form .form-group {
    margin-bottom: 0;
    min-width: 0;
}

.ask-pricing-form .additional-info-group,
.ask-pricing-form > button[type="submit"] {
    grid-column: 1 / -1;
}

@media (min-width: 992px) {
    .ask-pricing-form {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        column-gap: 2rem;
        row-gap: 1rem;
        align-items: start;
    }
}

.is-hidden {
    display: none;
}

.error {
    color: #dc2626;
    font-size: 0.82rem;
    margin-top: 0.3rem;
}

.alert-error {
    background: #fff1f2;
    border: 1px solid #fecdd3;
    border-radius: 8px;
    color: #be123c;
    padding: 0.85rem 1rem;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

.error-pre {
    margin: 0;
    white-space: pre-wrap;
    word-break: break-word;
    font-size: 0.82rem;
    font-family: ui-monospace, monospace;
}

button[type="submit"],
.btn {
    width: 100%;
    background: #0ea5e9;
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 0.75rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s;
}

button[type="submit"]:hover,
.btn:hover {
    background: #0284c7;
}

button[type="submit"]:disabled,
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.back-link {
    display: inline-block;
    margin-top: 1.5rem;
    color: #0369a1;
    text-decoration: none;
    font-size: 0.9rem;
}

.back-link:hover {
    text-decoration: underline;
}

.result-block {
    background: #f8fafc;
    border: 1px solid #dbe3ee;
    border-radius: 8px;
    padding: 1.25rem;
    white-space: pre-wrap;
    line-height: 1.7;
    font-size: 0.95rem;
}

.label-row {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: #475569;
    margin-bottom: 0.5rem;
}

.section {
    margin-bottom: 1.5rem;
}

.hint-text {
    margin-top: 0.4rem;
    color: #64748b;
    font-size: 0.82rem;
}

.small-meta {
    font-size: 0.82rem;
    color: #64748b;
    margin-bottom: 0.5rem;
}

.monospace {
    font-family: ui-monospace, monospace;
}

.api-loader {
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    background: rgba(15, 23, 42, 0.32);
    backdrop-filter: blur(2px);
    z-index: 9999;
}

.api-loader.is-visible {
    display: flex;
}

.api-loader__panel {
    min-width: 280px;
    max-width: 90vw;
    background: #ffffff;
    border: 1px solid #dbe3ee;
    border-radius: 12px;
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.18);
    padding: 1rem 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.api-loader__spinner {
    width: 22px;
    height: 22px;
    border: 3px solid #bae6fd;
    border-top-color: #0284c7;
    border-radius: 50%;
    animation: api-spin 0.8s linear infinite;
}

.api-loader__text {
    margin: 0;
    color: #0f172a;
    font-size: 0.9rem;
    font-weight: 600;
}

@keyframes api-spin {
    to {
        transform: rotate(360deg);
    }
}