body {
    background: #fff;
    min-height: 100svh;
    margin: 0;
    padding: 32px 16px 64px;
    padding-top: max(32px, calc(50vh - 400px));
    padding-bottom: max(64px, env(safe-area-inset-bottom, 0px) + 24px);
    overflow-x: hidden;
    overflow-y: auto;
    display: block;
}

.form-container {
    width: 100%;
    max-width: 640px;
    margin: 0 auto;
    opacity: 0;
    transform: translateY(10px);
    animation: fadeInUp 0.6s ease-out 0.1s forwards;
}

.logo {
    margin-bottom: 28px;
    text-align: center;
}

.logo .logo-img {
    height: 128px;
    max-height: 18vh;
}

.ikdc-card {
    border: 0;
    border-radius: 0;
    background: transparent;
    padding: 0;
}

.ikdc-title {
    font-size: clamp(1rem, 1.35vw, 1.18rem);
    line-height: 1.45;
    margin-bottom: 12px;
    font-weight: 600;
}

.ikdc-subtitle {
    color: var(--sr-muted);
    font-size: 0.92rem;
    line-height: 1.6;
    margin-bottom: 18px;
}

.form-floating {
    margin-bottom: 18px;
}

.form-control {
    border: none !important;
    border-bottom: 1.5px solid var(--sr-line) !important;
    border-radius: 0 !important;
    background: transparent !important;
    box-shadow: none !important;
    outline: none !important;
    padding-left: 0.5rem;
    padding-right: 0.5rem;
    color: var(--sr-text);
    transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.form-floating > .form-control {
    height: calc(3.25rem + 2px);
    line-height: 1.25;
}

.form-control:focus {
    border: none !important;
    border-bottom: 1.5px solid var(--sr-line-focus) !important;
    background-color: transparent !important;
    transform: translateY(-1px);
}

.form-control:not(:placeholder-shown):not(:focus) {
    background-color: var(--sr-fill) !important;
    border: none !important;
    border-bottom: 1.5px solid transparent !important;
    border-radius: var(--sr-radius) !important;
    padding-left: 1rem;
    padding-right: 1rem;
}

.form-floating > label {
    pointer-events: none;
    transform-origin: left top;
    transform: translateY(0.6rem) scale(1);
    color: var(--sr-muted);
    padding-left: 0.5rem;
    font-weight: 400;
    transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.form-floating > .form-control:focus ~ label,
.form-floating > .form-control:not(:placeholder-shown) ~ label {
    transform: translateY(-0.6rem) scale(0.85);
    color: var(--sr-muted);
}

.form-floating > .form-control::placeholder {
    color: transparent;
}

/* На мобильных некоторые браузеры центрируют значение date input по умолчанию. */
input.form-control[type="date"] {
    text-align: left;
}

input.form-control[type="date"]::-webkit-date-and-time-value {
    text-align: left;
}

.form-control.is-valid {
    border-bottom: 1.5px solid #198754 !important;
}

.form-control.is-invalid {
    border-bottom: 1.5px solid #dc3545 !important;
}

.form-floating > .form-control.is-valid ~ label {
    color: #198754;
}

.form-floating > .form-control.is-invalid ~ label {
    color: #dc3545;
}

.form-select {
    border: none !important;
    border-bottom: 1.5px solid var(--sr-line) !important;
    border-radius: 0 !important;
    background-color: transparent !important;
    box-shadow: none !important;
    outline: none !important;
    padding-left: 0.5rem;
    padding-right: 2rem;
    color: var(--sr-text);
    transition: border-color 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                background-color 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                padding 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
}

.form-floating > .form-select {
    height: calc(3.25rem + 2px);
    min-height: calc(3.25rem + 2px);
    line-height: 1.25;
    padding-top: 1.625rem;
    padding-bottom: 0.625rem;
}

.form-select:focus {
    border: none !important;
    border-bottom: 1.5px solid var(--sr-line-focus) !important;
    background-color: transparent !important;
}

.form-select:not(:focus):valid {
    background-color: var(--sr-fill) !important;
    border: none !important;
    border-bottom: 1.5px solid transparent !important;
    border-radius: var(--sr-radius) !important;
    padding-left: 1rem;
    padding-right: 2rem;
}

/* У select label всегда «всплыт» — как в Bootstrap form-floating. */
.form-floating > .form-select ~ label {
    transform: translateY(-0.6rem) scale(0.85);
    color: var(--sr-muted);
}

.form-floating > .form-select:focus ~ label {
    color: var(--sr-muted);
}

.form-select.is-valid {
    border-bottom: 1.5px solid #198754 !important;
}

.form-select.is-invalid {
    border-bottom: 1.5px solid #dc3545 !important;
}

.form-floating > .form-select.is-valid ~ label {
    color: #198754;
}

.form-floating > .form-select.is-invalid ~ label {
    color: #dc3545;
}

.question-wrap {
    overflow: hidden;
    position: relative;
    min-height: 320px;
}

.question-slide {
    width: 100%;
    display: none;
    animation-duration: .25s;
    animation-fill-mode: both;
}

.question-slide.active {
    display: block;
}

.slide-in-right { animation-name: slideInRight; }
.slide-in-left { animation-name: slideInLeft; }
.slide-out-left { animation-name: slideOutLeft; }
.slide-out-right { animation-name: slideOutRight; }

@keyframes slideInRight { from { opacity: 0; transform: translateX(24px);} to { opacity: 1; transform: translateX(0);} }
@keyframes slideInLeft { from { opacity: 0; transform: translateX(-24px);} to { opacity: 1; transform: translateX(0);} }
@keyframes slideOutLeft { from { opacity: 1; transform: translateX(0);} to { opacity: 0; transform: translateX(-24px);} }
@keyframes slideOutRight { from { opacity: 1; transform: translateX(0);} to { opacity: 0; transform: translateX(24px);} }

.question-title {
    font-weight: 600;
    margin-bottom: 12px;
    font-size: clamp(1rem, 1.3vw, 1.14rem);
    line-height: 1.5;
}

.question-help {
    color: var(--sr-muted);
    font-size: 0.92rem;
    line-height: 1.6;
    margin-bottom: 14px;
}

.option-item {
    margin-bottom: 10px;
}

.option-radio {
    display: flex;
    gap: 10px;
    border: 1px solid var(--sr-line);
    border-radius: var(--sr-radius);
    padding: 11px 14px;
    cursor: pointer;
    transition: border-color .2s ease, background-color .2s ease;
    align-items: flex-start;
    margin-bottom: 0;
    position: relative;
}

.option-radio:hover {
    border-color: var(--sr-line-focus);
    background: #fafbfc;
}

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

.option-radio .form-check-label {
    line-height: 1.45;
    color: var(--sr-text);
    width: 100%;
    padding-right: 28px;
    transition: opacity .2s ease, font-weight .2s ease, color .2s ease;
}

.option-radio.invalid {
    border-color: var(--sr-error);
    background: rgba(220, 53, 69, 0.04);
}

/* Современный режим выбора: жирный текст + зелёная галочка + приглушение остальных */
.question-slide.has-selection .option-radio {
    opacity: 0.52;
    border-color: #e5e7eb;
}

.question-slide.has-selection .option-radio .form-check-label {
    color: #6b7280;
}

.question-slide.has-selection .option-radio.is-selected {
    opacity: 1;
    border-color: #d4d9df;
    background: #f8fafb;
}

.question-slide.has-selection .option-radio.is-selected .form-check-label {
    color: var(--sr-text);
    font-weight: 600;
}

.question-slide.has-selection .option-radio.is-selected::after {
    content: "✓";
    position: absolute;
    right: 11px;
    top: 50%;
    transform: translateY(-50%);
    color: #198754;
    font-weight: 700;
    font-size: 1rem;
}

.range-input-wrap {
    margin-top: 28px;
    position: relative;
}

.range-input-wrap input[type="range"] {
    width: 100%;
}

.range-input-wrap .form-range {
    height: 1.8rem;
}

.range-input-wrap .form-range:focus {
    box-shadow: none;
}

.range-input-wrap .form-range::-webkit-slider-runnable-track {
    height: 0.5rem;
    background: linear-gradient(90deg, #e9ecef 0%, #ced4da 100%);
    border-radius: 999px;
}

.range-input-wrap .form-range::-webkit-slider-thumb {
    width: 1.15rem;
    height: 1.15rem;
    margin-top: -0.33rem;
    background: #212529;
    border: 0;
    box-shadow: none;
}

.range-input-wrap .form-range::-moz-range-track {
    height: 0.5rem;
    background: linear-gradient(90deg, #e9ecef 0%, #ced4da 100%);
    border-radius: 999px;
    border: 0;
}

.range-input-wrap .form-range::-moz-range-thumb {
    width: 1.15rem;
    height: 1.15rem;
    background: #212529;
    border: 0;
    box-shadow: none;
}

.range-value {
    margin-top: 8px;
    color: var(--sr-muted);
    text-align: center;
}

.range-value-bubble {
    position: absolute;
    top: -1.6rem;
    left: 0;
    transform: translateX(-50%);
    z-index: 2;
    font-weight: 800;
    font-size: 1.12rem;
    line-height: 1;
    color: #000;
    background: #fff;
    padding: 5px 12px;
    border-radius: 999px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.15s ease;
}

.range-value-bubble.show {
    opacity: 1;
}

.nav-actions {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    margin-top: 32px;
}

.start-action {
    margin-top: 32px;
}

.start-action .btn {
    min-width: 180px;
}

.confirm-card {
    border: 1px solid var(--sr-line);
    border-radius: var(--sr-radius);
    background: #fafbfc;
    padding: 14px 16px;
}

.confirm-card p {
    margin: 0 0 8px;
    color: var(--sr-text);
    font-size: 0.95rem;
}

.btn {
    box-shadow: none !important;
    font-weight: 400;
    letter-spacing: 0.3px;
    transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn:active {
    transform: translateY(0);
}

.btn-dark {
    border: 0;
    background: linear-gradient(135deg, #212529 0%, #343a40 100%);
    color: #fff !important;
}

.btn-outline-dark {
    border-radius: 9999px;
}

.submit-btn {
    position: relative;
    min-width: 150px;
}

.submit-btn-spinner {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.35);
    border-top-color: #fff;
    border-radius: 50%;
    animation: submitBtnSpin .7s linear infinite;
    vertical-align: middle;
}

.submit-btn.loading .submit-btn-text {
    display: none;
}

.submit-btn.loading .submit-btn-spinner {
    display: inline-block;
}

.submit-btn.loading {
    cursor: wait;
    pointer-events: none;
}

@keyframes submitBtnSpin {
    to { transform: rotate(360deg); }
}

.consent {
    margin-top: 32px;
    color: var(--sr-muted);
    font-size: .9rem;
    line-height: 1.65;
    text-align: center;
}

.error-banner {
    display: none;
    margin-top: 12px;
    color: #fff;
    background: var(--sr-error);
    border-radius: var(--sr-radius);
    padding: 10px 12px;
    font-size: .9rem;
}

.error-banner.show {
    display: block;
}

.success-state {
    display: none;
    text-align: left;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
}

.success-state.show {
    display: block;
}

.success-state .h4 {
    font-size: clamp(1rem, 1.3vw, 1.14rem);
    line-height: 1.5;
    margin-bottom: 10px;
}

.success-state p {
    color: var(--sr-muted);
    font-size: 0.95rem;
    line-height: 1.65;
    margin-bottom: 0;
}

.success-actions {
    margin-top: 32px;
    display: flex;
    justify-content: center;
}

.footer-site {
    margin-top: 32px;
}

@media (max-width: 576px) {
    body {
        padding: 24px 24px calc(80px + env(safe-area-inset-bottom, 0px));
        padding-top: 24px;
    }

    .nav-actions .btn,
    .start-action .btn,
    .success-actions .btn {
        min-height: 50px;
        height: 50px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        padding-inline: clamp(12px, 3vw, 24px);
        font-size: clamp(.95rem, 3.2vw, 1rem);
        box-sizing: border-box;
    }
}