:root {
    /* Surface & Background */
    --nordic-bg: #FAFAFA;
    --nordic-surface: #FFFFFF;
    --nordic-surface-subtle: #F4F4F5;
    --nordic-border: #D4D4D8;
    --nordic-border-strong: #18181B;

    /* Typography */
    --text-primary: #18181B;
    --text-secondary: #3F3F46;
    --text-muted: #71717A;

    /* Accent & Active Inversion */
    --accent-color: #18181B;
    --accent-surface: #18181B;
    --accent-text: #FAFAFA;

    /* Sharp Edge Radii (Strict 2px Rules) */
    --card-radius: 2px;
    --cell-radius: 2px;
    --pill-radius: 2px;

    /* Status Dots */
    --status-available: #10B981;
    --status-negotiate: #F59E0B;
    --status-unavailable: #EF4444;

    --font-sans: 'Inter', 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --transition: all 0.12s ease;

    /* Legacy mapped variables for HTML compatibility */
    --color-text-main: var(--text-primary);
    --color-text-muted: var(--text-muted);
    --color-canvas: var(--nordic-bg);
    --color-snow: var(--nordic-surface);
    --color-border: var(--nordic-border);
}

/* Dark Mode Overrides */
@media (prefers-color-scheme: dark) {
    :root {
        --nordic-bg: #09090B;
        --nordic-surface: #121215;
        --nordic-surface-subtle: #18181B;
        --nordic-border: #27272A;
        --nordic-border-strong: #E4E4E7;

        --text-primary: #E4E4E7;
        --text-secondary: #A1A1AA;
        --text-muted: #71717A;

        --accent-color: #E4E4E7;
        --accent-surface: #E4E4E7;
        --accent-text: #18181B;
    }
}

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

html {
    overflow-y: scroll;
    scrollbar-gutter: stable;
}

body {
    font-family: var(--font-sans);
    background-color: var(--nordic-bg);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding: 40px 20px 24px 20px;
    position: relative;
    letter-spacing: -0.015em;
}

.container {
    width: 100%;
    max-width: 1040px;
    background: var(--nordic-surface);
    border: 1px solid var(--nordic-border);
    border-radius: var(--card-radius);
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.04);
    position: relative;
}

.header {
    padding: 40px 40px 24px 40px;
    text-align: left;
    border-bottom: 1px solid var(--nordic-border);
    margin-bottom: 32px;
    position: relative;
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 10px;
}

.header h1 {
    font-family: var(--font-sans);
    font-size: 28px;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.03em;
    text-transform: uppercase;
    line-height: 1;
}

.header p {
    color: var(--text-muted);
    font-size: 13.5px;
    letter-spacing: -0.015em;
}

.form-body {
    padding: 0 40px 40px 40px;
}

.form-group {
    margin-bottom: 32px;
    position: relative;
}

.form-group label.field-title {
    display: block;
    font-family: var(--font-sans);
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
    letter-spacing: -0.015em;
}

.required::after {
    content: ' *';
    color: var(--text-primary);
    font-weight: 600;
}

.description {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 400;
    margin-top: 4px;
    margin-bottom: 12px;
    line-height: 1.5;
    letter-spacing: -0.015em;
}

.options-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 12px;
    margin-top: 8px;
}

.option-card {
    position: relative;
    background: var(--nordic-surface);
    border: 1px solid var(--nordic-border);
    border-radius: var(--cell-radius);
    padding: 16px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    min-height: 84px;
    line-height: 1.4;
    word-break: keep-all;
}

.option-card:hover {
    background: var(--nordic-surface-subtle);
    border-color: var(--nordic-border-strong);
}

.option-card:focus-within,
.checkbox-container:focus-within {
    border-color: var(--nordic-border-strong);
    box-shadow: 0 0 0 2px var(--nordic-border-strong);
}

.btn-custom:focus-visible,
.lang-btn:focus-visible,
input:focus-visible,
textarea:focus-visible,
.option-card input[type="radio"]:focus-visible + .option-label {
    outline: 2px solid var(--nordic-border-strong);
    outline-offset: 1px;
}

.option-card input[type="radio"],
.option-card input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.option-card .option-label {
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 4px;
    color: var(--text-primary);
    letter-spacing: -0.015em;
}

.option-card .option-price {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 500;
}

.option-card.selected {
    background-color: var(--accent-surface) !important;
    color: var(--accent-text) !important;
    border-color: var(--accent-surface) !important;
}

.option-card.selected .option-label,
.option-card.selected .option-price {
    color: var(--accent-text) !important;
}

input[type="text"],
textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--nordic-border);
    border-radius: var(--cell-radius);
    font-family: inherit;
    font-size: 16px; /* iOS auto-zoom 방지: 16px 미만이면 Safari가 자동 확대 */
    color: var(--text-primary);
    background-color: var(--nordic-surface);
    transition: var(--transition);
    outline: none;
    letter-spacing: -0.015em;
}

input[type="text"]:focus,
textarea:focus {
    border-color: var(--nordic-border-strong);
    box-shadow: 0 0 0 1px var(--nordic-border-strong);
    background-color: var(--nordic-surface);
}

input[type="text"]::placeholder,
textarea::placeholder {
    color: var(--text-muted);
}

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

.option-card.disabled {
    opacity: 0.35;
    pointer-events: none;
    cursor: not-allowed;
    filter: grayscale(1);
    background: var(--nordic-surface-subtle);
    border-color: var(--nordic-border);
}

.checkbox-container {
    background: var(--nordic-surface);
    border: 1px solid var(--nordic-border);
    border-radius: var(--cell-radius);
    padding: 0;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: var(--transition);
    min-height: 84px;
    line-height: 1.4;
    word-break: keep-all;
}

.checkbox-container:hover {
    background: var(--nordic-surface-subtle);
    border-color: var(--nordic-border-strong);
}

.checkbox-container.checked {
    background-color: var(--accent-surface) !important;
    color: var(--accent-text) !important;
    border-color: var(--accent-surface) !important;
}

.checkbox-container.checked .checkbox-title,
.checkbox-container.checked .checkbox-subtext,
.checkbox-container.checked .quantity-control span,
.checkbox-container.checked .checkbox-text-group span {
    color: var(--accent-text) !important;
}

.checkbox-info {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    user-select: none;
    flex: 1;
    align-self: stretch;
    padding: 16px;
}

.checkbox-info input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    cursor: pointer;
    border-radius: var(--cell-radius);
    border: 1px solid var(--nordic-border);
    background-color: var(--nordic-surface);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    flex-shrink: 0;
    position: relative;
}

.checkbox-info input[type="checkbox"]:checked {
    background-color: var(--accent-surface);
    border-color: var(--accent-surface);
}

.checkbox-info input[type="checkbox"]:checked::after {
    content: '';
    width: 6px;
    height: 6px;
    background-color: var(--accent-text);
}

.checkbox-container.checked .checkbox-info input[type="checkbox"] {
    background-color: var(--accent-text);
    border-color: var(--accent-text);
}

.checkbox-container.checked .checkbox-info input[type="checkbox"]::after {
    background-color: var(--accent-surface);
}

.checkbox-text-group {
    display: flex;
    flex-direction: column;
}

.checkbox-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.015em;
}

.checkbox-subtext {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 500;
}

.quantity-control {
    display: flex;
    align-items: center;
    gap: 8px;
    opacity: 1;
    pointer-events: auto;
    padding-right: 16px;
}

.checkbox-container.checked .quantity-control {
    opacity: 1;
    pointer-events: auto;
}

.quantity-control span {
    font-size: 13px;
    color: var(--text-primary);
    font-weight: 600;
}

.checkbox-container.checked .quantity-control span {
    color: var(--accent-text) !important;
}

.extra-people-stepper-wrapper {
    background: #ffffff !important;
    border: 1px solid var(--nordic-border) !important;
    padding: 4px 10px;
    height: 36px;
    display: flex;
    align-items: center;
}

.extra-people-stepper-wrapper .time-input {
    width: 36px;
    color: #111827 !important;
}

.qty-unit,
.quantity-control .qty-unit,
.checkbox-container.checked .quantity-control .qty-unit,
.extra-people-stepper-wrapper .qty-unit {
    color: #111827 !important;
    font-size: 13.5px;
    font-weight: 600;
    margin-left: 6px;
}

.checkbox-container.checked .qty-btn:hover {
    background: #000000;
    color: #ffffff;
}

.qty-stepper input[type=number] {
    width: 36px;
    height: 34px;
    border: none;
    border-left: 1px solid var(--nordic-border);
    border-right: 1px solid var(--nordic-border);
    background: transparent;
    text-align: center;
    font-family: inherit;
    font-size: 14px;
    font-weight: 700;
    color: var(--text-primary);
    outline: none;
    padding: 0;
    -moz-appearance: textfield;
}

.checkbox-container.checked .qty-stepper input[type=number] {
    border-color: var(--nordic-border);
    color: #000000;
}

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

.qty-unit {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    margin-left: 6px;
}


.time-input-group {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 8px;
}

.time-input-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--nordic-surface);
    border: 1px solid var(--nordic-border);
    border-radius: var(--cell-radius);
    padding: 10px 16px;
    transition: var(--transition);
}

.time-input-wrapper:hover {
    background: var(--nordic-surface-subtle);
    border-color: var(--nordic-border-strong);
}

.time-input-wrapper:focus-within {
    border-color: var(--nordic-border-strong);
    box-shadow: 0 0 0 1px var(--nordic-border-strong);
    background: var(--nordic-surface);
}

.time-input {
    width: 45px;
    border: none;
    background: transparent;
    text-align: center;
    font-family: inherit;
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    outline: none;
    padding: 0;
    /* iOS auto-zoom 방지 */
    -webkit-text-size-adjust: 100%;
}

.stepper-input-container {
    position: relative;
    display: flex;
    align-items: center;
}

.stepper-input-container .time-input {
    width: 56px;
    padding-right: 18px;
    text-align: center;
}

.stepper-btn-group {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    width: 16px;
    height: 28px;
    border-left: 1px solid var(--nordic-border);
}

.stepper-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 8px;
    line-height: 1;
    cursor: pointer;
    transition: background 0.15s ease, color 0.15s ease;
    user-select: none;
    padding: 0;
}

.stepper-btn:hover {
    background: var(--nordic-surface-subtle);
    color: var(--text-primary);
}

.stepper-btn:active {
    background: var(--nordic-border);
}

.stepper-btn.stepper-up {
    border-bottom: 1px solid var(--nordic-border);
}

.time-input::-webkit-outer-spin-button,
.time-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

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

.time-label {
    font-size: 13.5px;
    font-weight: 600;
    color: var(--text-muted);
}

.form-main-wrapper {
    display: flex;
    gap: 40px;
    align-items: flex-start;
    width: 100%;
}

.form-left-side {
    flex: 1;
    min-width: 0;
    border-right: 1px solid var(--nordic-border);
    padding-right: 40px;
    min-height: 540px;
}

.result-section {
    background: var(--nordic-surface);
    border: 1px solid var(--nordic-border);
    border-radius: var(--card-radius);
    padding: 24px;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.04);
    position: sticky;
    top: 40px;
    width: 300px;
    flex-shrink: 0;
}

.result-section h3 {
    font-family: var(--font-sans);
    font-size: 11px;
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.18em;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.result-section h3::before {
    content: '';
    display: inline-block;
    width: 4px;
    height: 4px;
    background-color: var(--accent-surface);
}

/* 공통 버튼 스타일 */
.btn-custom {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 14px 18px;
    font-family: var(--font-sans);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: var(--transition);
    border-radius: var(--pill-radius);
    margin-top: 8px;
}

/* 1. 복사하기 버튼 (Outline sharp 스타일) */
.btn-copy {
    background: var(--nordic-surface);
    color: var(--text-primary);
    border: 1px solid var(--nordic-border);
}
.btn-copy:hover {
    background: var(--nordic-surface-subtle);
    border-color: var(--nordic-border-strong);
}

/* 2. 견적서 전송 버튼 (Solid sharp 스타일) */
.btn-email {
    background: var(--accent-surface);
    color: var(--accent-text);
    border: 1px solid var(--accent-surface);
}
.btn-email:hover {
    opacity: 0.9;
    border-color: var(--accent-surface);
}

.lang-selector {
    display: flex;
    gap: 4px;
}

.lang-btn {
    background: var(--nordic-surface);
    border: 1px solid var(--nordic-border);
    color: var(--text-muted);
    padding: 5px 12px;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    cursor: pointer;
    transition: var(--transition);
    border-radius: var(--pill-radius);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.lang-btn::before {
    content: '';
    display: inline-block;
    width: 4px;
    height: 4px;
    background-color: var(--text-muted);
    transition: var(--transition);
}

.lang-btn:hover {
    border-color: var(--nordic-border-strong);
    color: var(--text-primary);
    background: var(--nordic-surface-subtle);
}

.lang-btn:hover::before {
    background-color: var(--text-primary);
}

.lang-btn.active {
    background: var(--accent-surface);
    color: var(--accent-text);
    border-color: var(--accent-surface);
}

.lang-btn.active::before {
    background-color: var(--accent-text);
}

.price-breakdown {
    margin-bottom: 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-height: 40px;
}

.breakdown-item {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
    font-size: 13.5px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--nordic-border);
    padding-bottom: 6px;
    letter-spacing: -0.015em;
}

.breakdown-item > span:first-child {
    flex: 1;
    min-width: 0;
    word-break: break-word;
}

.breakdown-item:last-child {
    border-bottom: none;
}

.breakdown-item .item-price {
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    flex-shrink: 0;
    text-align: right;
}

.total-price-display {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    font-family: var(--font-sans);
    text-align: right;
    margin-bottom: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--nordic-border-strong);
    letter-spacing: -0.015em;
    white-space: nowrap;
    word-break: keep-all;
}

#convertedPriceText {
    font-family: var(--font-sans);
    color: var(--text-muted);
}

/* Custom Modal Styles */
.custom-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.12s ease;
}

.custom-modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.custom-modal {
    background: var(--nordic-surface);
    padding: 32px 24px;
    border: 1px solid var(--nordic-border-strong);
    border-radius: var(--card-radius);
    box-shadow: 0 4px 12px 0 rgba(0, 0, 0, 0.08);
    width: 90%;
    max-width: 360px;
    text-align: center;
    transform: translateY(10px);
    transition: transform 0.12s ease;
}

.custom-modal-overlay.active .custom-modal {
    transform: translateY(0);
}

.custom-modal-message {
    color: var(--text-primary);
    font-size: 14px;
    margin-bottom: 24px;
    line-height: 1.6;
    font-weight: 500;
    white-space: pre-wrap;
    word-break: keep-all;
    letter-spacing: -0.015em;
}

.custom-modal-buttons {
    display: flex;
    gap: 8px;
    justify-content: center;
}

.custom-modal-btn {
    padding: 10px 20px;
    font-family: var(--font-sans);
    font-size: 13px;
    font-weight: 600;
    border: 1px solid var(--accent-surface);
    background: var(--accent-surface);
    color: var(--accent-text);
    cursor: pointer;
    transition: var(--transition);
    border-radius: var(--pill-radius);
    flex: 1;
}

.custom-modal-btn:hover {
    opacity: 0.9;
}

.custom-modal-btn.cancel-btn {
    border-color: var(--nordic-border);
    background: var(--nordic-surface);
    color: var(--text-primary);
}

.custom-modal-btn.cancel-btn:hover {
    background: var(--nordic-surface-subtle);
    border-color: var(--nordic-border-strong);
}

/* Site Footer Improvement */
.site-footer {
    width: 100%;
    max-width: 1040px;
    margin-top: auto;
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 400;
    z-index: 10;
    flex-wrap: wrap;
    gap: 8px;
    padding-left: 4px;
    padding-right: 4px;
}

@media (max-width: 900px) {
    body {
        padding: 16px;
    }

    .header {
        padding: 30px 20px 20px 20px;
    }

    .form-body {
        padding: 0 20px 30px 20px;
    }

    .options-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        width: 100%;
        box-sizing: border-box;
        gap: 10px;
    }

    .option-card {
        width: 100%;
        box-sizing: border-box;
        padding: 16px 14px;
    }

    .form-main-wrapper {
        width: 100%;
        flex-direction: column;
        gap: 0;
    }

    .form-left-side {
        width: 100%;
        box-sizing: border-box;
        border-right: none;
        padding-right: 0;
        border-bottom: 1px solid var(--nordic-border);
        padding-bottom: 32px;
        margin-bottom: 32px;
    }

    .result-section {
        position: static;
        width: 100%;
        margin-top: 0;
        box-sizing: border-box;
    }

    /* 툴팁: 모바일에서 화면 너비에 맞게 조정 */
    .tooltip-box {
        width: calc(100vw - 48px);
        max-width: calc(100vw - 48px);
        left: 0;
        right: 0;
    }
}

/* ==========================================
   소형 모바일 전용 (480px 이하)
   ========================================== */
@media (max-width: 480px) {
    body {
        padding: 0 0 80px 0;
    }

    .container {
        border-left: none;
        border-right: none;
        border-radius: 0;
        border-top: none;
    }

    .header {
        padding: 24px 16px 16px 16px;
    }

    .header h1 {
        font-size: 22px;
    }

    .form-body {
        padding: 0 16px 24px 16px;
    }

    .options-grid {
        grid-template-columns: 1fr !important;
        width: 100% !important;
        gap: 10px;
    }

    .option-card {
        width: 100% !important;
        box-sizing: border-box;
        padding: 16px 16px !important;
    }

    /* 체크박스 컨테이너: 수량 조절기가 좁은 화면에서 아래로 내려가도록 */
    .checkbox-container {
        flex-wrap: wrap;
        min-height: auto;
        padding-bottom: 12px;
    }

    .checkbox-info {
        padding: 14px 14px 8px 14px;
        flex: 1 1 100%;
    }

    .quantity-control {
        padding-left: 14px;
        padding-right: 14px;
        padding-bottom: 4px;
        flex: 1 1 100%;
        justify-content: flex-end;
        opacity: 0.5;
    }

    .checkbox-container.checked .quantity-control {
        opacity: 1;
    }

    /* 시간 입력: 줄바꿈 허용 */
    .time-input-group {
        flex-wrap: wrap;
    }

    .time-input-wrapper {
        flex: 1;
        min-width: 100px;
    }

    /* 스텝 네비게이션 바: 엄지손가락으로 누르기 쉬운 풀위치 버튼 */
    .step-nav-bar {
        flex-direction: column-reverse;
        gap: 10px;
        width: 100%;
    }

    .btn-step {
        width: 100% !important;
        min-height: 48px !important;
        font-size: 15px !important;
        justify-content: center !important;
        box-sizing: border-box;
    }

    .btn-step-next {
        margin-left: 0 !important;
    }

    /* 온보딩 플로우 폰트 크기 조정 */
    .step-text {
        font-size: 11.5px;
    }

    /* 필드 상태 뱃지 줄임 */
    .field-header {
        flex-wrap: wrap;
        gap: 4px;
    }

    /* 섹션 타이틀 조정 */
    .section-title {
        font-size: 15px;
    }

    /* 견적서 영역 패딩 조정 */
    .result-section {
        padding: 18px;
    }

    /* 총액 폰트 크기 조정 */
    .total-price-display {
        font-size: 17px;
    }

    /* 모달 내 연락처 입력란 */
    #modalContactInput {
        font-size: 16px !important;
    }

    /* 사이트 푸터 */
    .site-footer {
        padding: 0 16px;
        margin-top: 16px;
    }
}

/* ==========================================
   Nordic Sharp Edge - Onboarding & Micro UX
   ========================================== */

/* 1. Onboarding Step Flow */
.onboarding-flow {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 20px;
    padding: 12px 20px;
    width: 100%;
    box-sizing: border-box;
    background: var(--nordic-surface-subtle);
    border: 1px solid var(--nordic-border);
    border-radius: var(--card-radius);
    overflow-x: auto;
    white-space: nowrap;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
}

.onboarding-flow::-webkit-scrollbar {
    display: none;
}

.flow-step {
    display: flex;
    align-items: center;
    gap: 8px;
    opacity: 0.55;
    transition: var(--transition);
    flex-shrink: 0;
}

.flow-step.active {
    opacity: 1;
    font-weight: 600;
}

.step-num {
    background: var(--nordic-border-strong);
    color: var(--nordic-bg);
    font-size: 10px;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: var(--pill-radius);
    letter-spacing: 0.05em;
}

.step-text {
    font-size: 12.5px;
    color: var(--text-primary);
    letter-spacing: -0.015em;
}

.flow-arrow {
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 700;
    flex-shrink: 0;
}

/* 2. Form Section Blocks & Headers */
.form-section-block {
    margin-bottom: 36px;
    padding-bottom: 24px;
    border-bottom: 1px dashed var(--nordic-border);
}

.form-section-block:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.section-header {
    margin-bottom: 24px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.section-tag {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--text-muted);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.section-tag::before {
    content: '';
    display: inline-block;
    width: 4px;
    height: 4px;
    background-color: var(--nordic-border-strong);
}

.section-title {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

/* 4. Field Headers, Tooltips & Status Badges */
.field-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 6px;
    position: relative;
}

.field-title-group {
    display: flex;
    align-items: center;
    gap: 6px;
}

.field-header .field-title {
    margin-bottom: 0;
}

.field-status {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 3px 8px;
    border-radius: var(--pill-radius);
    background: var(--nordic-surface-subtle);
    color: var(--text-muted);
    border: 1px solid var(--nordic-border);
    transition: var(--transition);
}

.field-status.completed {
    background: var(--accent-surface);
    color: var(--accent-text);
    border-color: var(--accent-surface);
}

.tooltip-trigger {
    background: var(--nordic-surface);
    border: 1px solid var(--nordic-border);
    color: var(--text-muted);
    width: 18px;
    height: 18px;
    font-size: 11px;
    font-weight: 700;
    border-radius: var(--pill-radius);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-left: 0;
    transition: var(--transition);
    vertical-align: middle;
    flex-shrink: 0;
}

.tooltip-trigger:hover {
    border-color: var(--nordic-border-strong);
    color: var(--text-primary);
    background: var(--nordic-surface-subtle);
}

.tooltip-box {
    display: none;
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    z-index: 100;
    width: max-content;
    max-width: calc(100% - 20px);
    padding: 10px 14px;
    font-size: 12px;
    line-height: 1.5;
    background: var(--nordic-surface);
    border: 1px solid var(--nordic-border-strong);
    border-radius: var(--cell-radius);
    color: var(--text-primary);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.14);
    letter-spacing: -0.015em;
    box-sizing: border-box;
    pointer-events: auto;
}

.tooltip-box.active {
    display: block;
    animation: tooltipPopoverIn 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes tooltipPopoverIn {
    from {
        opacity: 0;
        transform: translateY(-6px) scale(0.97);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* 5. Progress Tracker Card in Result Section */
.progress-card {
    background: var(--nordic-surface-subtle);
    border: 1px solid var(--nordic-border);
    border-radius: var(--card-radius);
    padding: 12px 14px;
    margin-bottom: 20px;
}

.progress-text-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    margin-bottom: 8px;
}

.progress-label {
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: -0.015em;
}

.progress-val {
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 0.02em;
}

.progress-bar-bg {
    width: 100%;
    height: 5px;
    background: var(--nordic-border);
    border-radius: var(--pill-radius);
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: var(--accent-surface);
    width: 0%;
    transition: width 0.25s ease;
}

/* 6. Step Wizard Visibility & Direction-Aware Slide Animations */
.form-left-side {
    transition: height 0.32s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: height;
}

.form-section-block {
    transition: opacity 0.24s cubic-bezier(0.4, 0, 0.2, 1), transform 0.24s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: opacity, transform;
}

.form-section-block.step-hidden {
    display: none !important;
    opacity: 0;
    transform: translateX(0);
}

.form-section-block.step-leaving-left {
    display: block !important;
    opacity: 0;
    transform: translateX(-16px);
}

.form-section-block.step-leaving-right {
    display: block !important;
    opacity: 0;
    transform: translateX(16px);
}

.form-section-block.step-entering-left {
    display: block !important;
    opacity: 0;
    transform: translateX(-16px);
}

.form-section-block.step-entering-right {
    display: block !important;
    opacity: 0;
    transform: translateX(16px);
}

.form-section-block.step-active {
    display: block !important;
    opacity: 1;
    transform: translateX(0);
}

.onboarding-flow .flow-step {
    cursor: pointer;
    padding: 2px 4px;
    border-radius: var(--pill-radius);
}

.onboarding-flow .flow-step:hover {
    opacity: 0.9;
}

.step-nav-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-top: 32px;
    padding-top: 20px;
    border-top: 1px dashed var(--nordic-border);
}

.btn-step {
    font-family: var(--font-sans);
    font-size: 13px;
    font-weight: 600;
    padding: 12px 20px;
    border-radius: var(--pill-radius);
    cursor: pointer;
    transition: var(--transition);
    letter-spacing: -0.015em;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-step-next {
    background: var(--accent-surface);
    color: var(--accent-text);
    border: 1px solid var(--accent-surface);
    margin-left: auto;
}

.btn-step-next:hover {
    opacity: 0.9;
}

.btn-step-prev {
    background: var(--nordic-surface);
    color: var(--text-primary);
    border: 1px solid var(--nordic-border);
}

.btn-step-prev:hover {
    background: var(--nordic-surface-subtle);
    border-color: var(--nordic-border-strong);
}

/* 7. Collapsible Live 2D Sub-Options Container (Smooth CSS Grid Transition) */
.live2d-suboptions-container {
    display: grid;
    grid-template-rows: 0fr;
    opacity: 0;
    margin-top: 0;
    transition: grid-template-rows 0.35s cubic-bezier(0.16, 1, 0.3, 1),
                opacity 0.28s cubic-bezier(0.16, 1, 0.3, 1),
                margin-top 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

.live2d-suboptions-container > .live2d-suboptions-inner {
    overflow: hidden;
}

.live2d-suboptions-container.expanded {
    grid-template-rows: 1fr;
    opacity: 1;
    margin-top: 14px;
}

/* --------------------------------------------------------------------------
   Language Transition Spec: 2-Phase Cross-Fade & Shift
   -------------------------------------------------------------------------- */

/* Phase 1: 기존 텍스트가 위로 올라가며 사라짐 */
@keyframes sharpFadeOut {
  0% {
    opacity: 1;
    transform: translateY(0);
  }
  100% {
    opacity: 0;
    transform: translateY(-12px);
  }
}

/* Phase 2: 새 텍스트가 아래에서 올라오며 나타남 */
@keyframes sharpFadeIn {
  0% {
    opacity: 0;
    transform: translateY(12px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 애니메이션 적용 유틸리티 클래스 */
.lang-fading-out {
  animation: sharpFadeOut 0.18s cubic-bezier(0.4, 0, 1, 1) forwards;
  will-change: opacity, transform;
}

.lang-fading-in {
  animation: sharpFadeIn 0.22s cubic-bezier(0, 0, 0.2, 1) forwards;
  will-change: opacity, transform;
}

span.lang-fading-out:not(.section-tag):not(.lang-btn):not(.btn-step),
span.lang-fading-in:not(.section-tag):not(.lang-btn):not(.btn-step) {
  display: inline-block;
}

.section-tag.lang-fading-out,
.section-tag.lang-fading-in {
  display: inline-flex !important;
}

/* Toast Notification Component */
.toast-notification {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(16px);
  background: rgba(17, 24, 39, 0.94);
  backdrop-filter: blur(12px);
  color: #ffffff;
  padding: 12px 22px;
  border-radius: 9999px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: -0.01em;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.25), 0 8px 10px -6px rgba(0, 0, 0, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.15);
  z-index: 10000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s cubic-bezier(0.16, 1, 0.3, 1), transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  align-items: center;
  gap: 8px;
  max-width: 90vw;
  text-align: center;
}

.toast-notification.active {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

/* Mobile Floating Sticky Quote Summary Bar (< 768px) */
.mobile-sticky-bar {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(17, 24, 39, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    color: #ffffff;
    padding: 12px 20px;
    z-index: 999;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.2);
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

@media (max-width: 768px) {
    .mobile-sticky-bar {
        display: flex;
    }

    .toast-notification {
        bottom: 76px;
    }
}

.mobile-sticky-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.mobile-sticky-label {
    font-size: 11px;
    font-weight: 500;
    color: #94a3b8;
    letter-spacing: -0.01em;
}

.mobile-sticky-val {
    font-size: 17px;
    font-weight: 700;
    color: #ffffff;
    letter-spacing: -0.02em;
}

.mobile-sticky-btn {
    background: #ffffff;
    color: #111827;
    border: none;
    border-radius: 9999px;
    padding: 9px 18px;
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.15s ease, opacity 0.15s ease;
    flex-shrink: 0;
}

.mobile-sticky-btn:active {
    transform: scale(0.96);
    opacity: 0.9;
}

/* --------------------------------------------------------------------------
   Narrow Mobile Responsive Enhancements (< 640px)
   -------------------------------------------------------------------------- */
@media (max-width: 640px) {
    /* Enable horizontal scroll on step indicator bar without overflowing */
    .onboarding-flow {
        overflow-x: auto;
        white-space: nowrap;
        -webkit-overflow-scrolling: touch;
        padding-bottom: 6px;
        scrollbar-width: none;
    }
    .onboarding-flow::-webkit-scrollbar {
        display: none;
    }
    .flow-step {
        flex-shrink: 0;
    }

    /* Thumb-friendly 48px high action navigation buttons */
    .step-nav-bar {
        flex-direction: column-reverse;
        gap: 10px;
    }

    .btn-step {
        width: 100%;
        min-height: 48px;
        font-size: 15px;
        justify-content: center;
    }

    .btn-step-next {
        margin-left: 0;
    }

    /* Prevent iOS Safari auto-zoom on input focus */
    input[type="text"],
    input[type="number"],
    select,
    textarea {
        font-size: 16px !important;
    }

    /* Card active tactile touch state */
    .option-card:active,
    .use-type-card:active {
        transform: scale(0.98);
    }
}

/* ==========================================================================
   Nordic Glass-Cut Micro UI/UX Enhancements (Strictly Preserving Original Design)
   ========================================================================== */

/* 1. Price Display Tabular Nums & Pulse Effect */
.total-price-display {
    font-variant-numeric: tabular-nums;
    transition: transform 0.15s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.total-price-display.price-updated {
    transform: scale(1.03);
}

/* 2. Option Cards Tactile Micro Hover & Click Snap */
.option-card {
    transition: transform 0.12s ease, border-color 0.12s ease, background-color 0.12s ease, box-shadow 0.12s ease;
}

@media (hover: hover) {
    .option-card:hover {
        transform: translateY(-1px);
    }
}

/* 3. Active Step Pulsing Dot Indicator */
.flow-step.active .step-num {
    position: relative;
}

.flow-step.active .step-num::after {
    content: '';
    display: inline-block;
    width: 4px;
    height: 4px;
    background-color: var(--accent-surface);
    border-radius: 50%;
    margin-left: 4px;
    vertical-align: middle;
    animation: nordic-step-pulse 1.8s infinite ease-in-out;
}

@keyframes nordic-step-pulse {
    0%, 100% { transform: scale(0.8); opacity: 0.5; }
    50% { transform: scale(1.5); opacity: 1; }
}

/* 4. Dark Mode Top Rim Light (Glass-Cut Precision Edge) */
@media (prefers-color-scheme: dark) {
    .container, .option-card, .form-section-block {
        border-top-color: rgba(255, 255, 255, 0.14) !important;
    }
}

/* 5. Mobile Glassmorphic Floating Summary Drawer Bar */
@media (max-width: 767px) {
    .mobile-estimate-bar {
        background: rgba(250, 250, 250, 0.92) !important;
        backdrop-filter: blur(16px) saturate(180%);
        -webkit-backdrop-filter: blur(16px) saturate(180%);
        border-top: 1px solid var(--nordic-border-strong);
        box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.08);
    }

    @media (prefers-color-scheme: dark) {
        .mobile-estimate-bar {
            background: rgba(18, 18, 21, 0.92) !important;
            border-top-color: rgba(255, 255, 255, 0.15);
        }
    }
}

/* 6. Ultrawide QHD/4K (>= 1440px) Fluid Width Optimization */
@media (min-width: 1440px) {
    .container {
        max-width: 1140px;
    }
}