@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap');
@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard/dist/web/static/pretendard.css');

/* ----------------------------------------------------
   0) Reset & Theme
---------------------------------------------------- */
:root {
    --ub-purple-700: #6d28d2;
    --ub-purple-dark: #581c87;
    --ub-accent:     #a435f0;
    --ub-pink:       #d52a7c;
    --ub-orange:     #f09435;

    --glass-bg:      rgba(255, 255, 255, 0.75);
    --glass-border:  rgba(255, 255, 255, 0.3);
    --shadow:        0 25px 60px rgba(0,0,0,0.2);

    --text-900: #111;
    --text-700: #333;
    --text-600: #555;
    --text-500: #666;
    --text-400: #999;
    --text-red:   #d93025;
    --text-green: #28a745;
    --white:    #fff;
    
    --form-bg:  #fdfdfd; 
    --form-bg-light: #f7f3ff; 

    --radius-xl: 24px;
    --radius-md: 8px;

    --focus-ring: 0 0 0 3px rgba(109, 40, 210, 0.2);
}

html, body {
    height: 100%;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
*, *::before, *::after { box-sizing: inherit; }

body {
    font-family: 'Pretendard', 'Inter', sans-serif;
    color: var(--text-900);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 2rem; 
    box-sizing: border-box; 
    overflow-x: hidden; 
    perspective: 1500px; 
    padding-left:  env(safe-area-inset-left, 0);
    padding-right: env(safe-area-inset-right, 0);
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

/* ----------------------------------------------------
   1) Animated Background
---------------------------------------------------- */
.animated-bg {
    position: fixed;
    inset: 0;
    z-index: -1;
    background: linear-gradient(135deg, var(--ub-purple-700), var(--ub-accent), var(--ub-orange), var(--ub-pink));
    background-size: 400% 400%;
    animation: gradient-flow 15s ease infinite;
}

@keyframes gradient-flow {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* ----------------------------------------------------
   2) Main Card (Glassmorphism)
---------------------------------------------------- */
.form-container {
    width: 100%;
    max-width: 950px;
    display: flex;
    border-radius: var(--radius-xl);
    overflow: hidden; 
    box-shadow: var(--shadow);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    position: relative;
    transform-style: preserve-3d;
    transition: transform 0.1s ease-out;
}

.glare {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0) 70%); 
    opacity: 0;
    pointer-events: none; 
    transition: opacity 0.2s ease-out;
    z-index: 5;
    will-change: background;
}

/* ----------------------------------------------------
   3) Left Info Pane
---------------------------------------------------- */
.info-pane {
    width: 40%;
    background: var(--ub-purple-700);
    color: var(--white);
    padding: 3rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative; 
    overflow: hidden; 
}
.info-content { width: 100%; }

.info-logo {
    width: 200px; 
    height: auto; 
    margin-bottom: 1.5rem; 
}

.info-pane p {
    font-size: clamp(1.05rem, 1.2vw, 1.2rem); 
    line-height: 1.6;
    opacity: 1; 
}
.info-pane p strong {
    font-weight: 700;
}

.info-pane .trusted-by-line {
    font-size: clamp(0.9rem, 1vw, 0.95rem);
    font-weight: 500;
    opacity: 0.8;
    line-height: 1.5;
    margin-top: 1rem;
}

.testimonial-slider {
    margin-top: 2.5rem;
    height: 120px;
    position: relative;
    border-top: 1px solid rgba(255, 255, 255, 0.3);
    padding-top: 2.5rem;
}

.testimonial-item {
    position: absolute;
    width: 100%;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.testimonial-item.active {
    opacity: 1;
    transform: translateY(0);
}
.testimonial-item h4 {
    font-size: clamp(1rem, 1.1vw, 1.1rem);
    font-weight: 700;
    color: var(--white);
    margin-bottom: 0.5rem;
}
.testimonial-item p {
    font-size: clamp(0.9rem, 1vw, 0.95rem);
    font-style: italic;
    opacity: 0.85;
    line-height: 1.5;
}

.info-pane .service-intro-link {
    margin-top: auto; 
    text-align: left;
    padding-top: 4rem; 
}
.info-pane .service-intro-link a {
    color: var(--white);
    font-weight: 700;
    font-size: clamp(1rem, 1.1vw, 1.1rem);
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-flex; 
    align-items: center;
}
.info-pane .service-intro-link .link-arrow {
    display: inline-block;
    margin-left: 0.5rem;
    transition: transform 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
}
.info-pane .service-intro-link a:hover .link-arrow {
    transform: translateX(5px);
}
.info-pane .service-intro-link a:hover {
    opacity: 0.8;
}

/* ----------------------------------------------------
   4) Right Form Pane
---------------------------------------------------- */
.form-pane {
    width: 60%;
    padding: 3rem;
    background: rgba(255, 255, 255, 0.85);
    position: relative; 
    overflow: hidden; 
}

.mobile-logo {
    display: none;
    width: 180px;
    height: auto;
    margin: 0 auto 1.5rem auto; 
}

.mobile-info-pane {
    display: none;
}

.form-intro {
    font-size: clamp(0.9rem, 1.05vw, 0.95rem);
    color: var(--text-700);
    text-align: center;
    margin-bottom: 2rem;
    line-height: 1.5; 
    background-color: var(--form-bg-light); 
    padding: 1rem;
    border-radius: var(--radius-md);
    border: none; 
}
.form-intro strong {
    color: var(--ub-purple-700);
    font-weight: 700;
}


/* ========== "스텝 서클" 프로그레스 바 ========== */
.progress-bar { 
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    position: relative; 
    margin-bottom: 2.5rem;
    align-items: start; 
}
.progress-bar::before { 
    content: ''; 
    position: absolute; 
    top: 15px; 
    left: 16.66%; 
    width: 66.66%;
    height: 3px; 
    background-color: #e0e0e0; 
    z-index: 1;
}
.progress-bar-fill { 
    position: absolute; 
    top: 15px;
    left: 16.66%; 
    width: 66.66%; 
    height: 3px; 
    background-color: var(--ub-purple-700); 
    z-index: 2; 
    transform: scaleX(0); 
    transform-origin: left;
    transition: transform 0.4s ease; 
}
.progress-step { 
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem; 
    z-index: 3;
    cursor: default;
}
.step-circle {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
    background: #e0e0e0; 
    color: var(--text-400);
    transition: all 0.4s ease;
    border: 2px solid #e0e0e0;
    position: relative; /* [추가] "스르륵" 효과를 위해 */
}
.step-label {
    font-size: 0.85rem; 
    font-weight: 600; 
    color: #aaa;
    transition: color 0.4s ease;
}

/* ========== [추가] "스르륵" V자 변환 스타일 ========== */
.step-number, .step-checkmark {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    transition: opacity 0.3s ease-out, transform 0.3s ease-out;
}
.step-number {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}
.step-checkmark {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0);
    font-size: 1.1rem;
    font-weight: 900;
}
/* ============================================== */


/* 활성 스텝 */
.progress-step.active .step-circle {
    background: var(--white);
    color: var(--ub-purple-700);
    border-color: var(--ub-purple-700);
    transform: scale(1.1);
}
.progress-step.active .step-label {
    color: var(--ub-purple-700);
}

/* 완료된 스텝 */
.progress-step.check .step-circle {
    background: var(--white);
    color: var(--ub-purple-700);
    border-color: var(--ub-purple-700);
    transform: scale(1);
}
.progress-step.check .step-label {
    color: var(--text-600);
}
/* ========== [추가] V자 보이기 / 숫자 숨기기 ========== */
.progress-step.check .step-number {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0);
}
.progress-step.check .step-checkmark {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}
/* ============================================= */


.required-note {
    font-size: 0.8rem;
    color: var(--text-red);
    text-align: right;
    margin-top: 1.5rem; 
    margin-bottom: 1rem;
}

.form-step {
    display: none;
    animation: slideInRight 0.5s cubic-bezier(0.165, 0.84, 0.44, 1); /* easeOutQuart */
}
.form-step.active { display: block; }
@keyframes slideInRight {
    from { opacity: 0; transform: translateX(30px); }
    to { opacity: 1; transform: translateX(0); }
}

.step-title {
    font-size: clamp(1.4rem, 1.8vw, 1.6rem);
    color: var(--text-900);
    margin-bottom: 2rem;
    font-weight: 700;
}
.step-title strong { color: var(--ub-purple-700); }

/* ----------------------------------------------------
   5) Form Inputs (에러/성공 스타일)
---------------------------------------------------- */
.form-group {
    margin-bottom: 1.5rem;
    position: relative;
}
.form-group .icon {
    position: absolute;
    top: 0.9rem;
    left: 1rem;
    font-size: 1.1rem;
    color: var(--text-400);
    transition: color 0.3s ease;
}
.form-group.required > label::after {
    content: ' *';
    color: var(--text-red);
}

.form-group label {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-600);
    margin-bottom: 0.5rem; 
}

.error-message {
    color: var(--text-red);
    font-size: 0.8rem;
    font-weight: 500;
    margin-top: 0.35rem; 
    min-height: 1em; 
}
.checkbox-error {
    margin-left: 1.75rem; 
}

/* 에러 상태 */
.form-group.error input,
.form-group.error select,
.form-group.error textarea {
    border-color: var(--text-red);
}
.form-group.error .icon {
    color: var(--text-red);
}
.form-group.error.floating label {
    color: var(--text-red);
}

.form-group .icon-feedback {
    position: absolute;
    right: 1rem;
    top: 0.9rem;
    font-size: 1.1rem;
    opacity: 0;
    transform: scale(0.5);
    transition: all 0.3s ease;
}
.form-group .icon-feedback.success { color: var(--text-green); }
.form-group .icon-feedback.error { color: var(--text-red); }

.form-group.valid .icon-feedback.success,
.form-group.error .icon-feedback.error {
    opacity: 1;
    transform: scale(1);
}

/* 성공 시 입력창 스타일 */
.form-group.valid input {
    border-color: var(--text-green);
}
.form-group.valid .icon {
    color: var(--text-green);
}
.form-group.valid.floating label {
    color: var(--text-green);
}


@keyframes shake {
  10%, 90% { transform: translateX(-1px); }
  20%, 80% { transform: translateX(2px); }
  30%, 50%, 70% { transform: translateX(-3px); }
  40%, 60% { transform: translateX(3px); }
}
.shake {
    animation: shake 0.5s cubic-bezier(.36,.07,.19,.97) both;
}


input[type="text"],
input[type="email"],
input[type="tel"],
select,
textarea {
    width: 100%;
    padding: 1rem;
    padding-left: 3rem; 
    border: 1px solid #ccc;
    border-radius: var(--radius-md);
    box-sizing: border-box;
    font-size: 1rem;
    background: var(--form-bg); 
    transition: border-color 0.3s, box-shadow 0.3s;
    font-family: 'Pretendard', 'Inter', sans-serif;
}
input[type="email"] {
    padding-right: 2.5rem; 
}


select { padding-left: 1rem; }
textarea { padding-left: 1rem; resize: vertical; min-height: 100px; }

/* Focus */
input:focus, select:focus, textarea:focus {
    border-color: var(--ub-purple-700);
    box-shadow: var(--focus-ring);
    outline: none;
    background: var(--white);
}
input:focus-visible, select:focus-visible, textarea:focus-visible {
    outline: none;
}

.form-group input:focus + label { color: var(--ub-purple-700); }
.form-group input:focus ~ .icon { color: var(--ub-purple-700); }

/* Floating Labels */
.form-group.floating { margin-bottom: 0.5rem; } 
.form-group.floating label {
    position: absolute;
    top: 1rem;
    left: 3rem; 
    color: var(--text-400);
    background: var(--form-bg); 
    padding: 0 0.25rem;
    transition: all 0.3s ease;
    pointer-events: none;
    margin-bottom: 0; 
}
.form-group.floating input:focus + label,
.form-group.floating input:not(:placeholder-shown) + label {
    top: -0.7rem;
    left: 2.75rem;
    font-size: 0.8rem;
    font-weight: 600;
    background: var(--white);
    color: var(--ub-purple-700);
}
.form-group.floating.valid input:focus + label,
.form-group.floating.valid input:not(:placeholder-shown) + label {
    color: var(--text-green);
}
.form-group.floating.error input:focus + label,
.form-group.floating.error input:not(:placeholder-shown) + label {
    color: var(--text-red);
}

.form-group.floating input:not(:placeholder-shown) { background: var(--white); }

/* ----------------------------------------------------
   6) Privacy (아코디언)
---------------------------------------------------- */
.privacy-group {
    margin-bottom: 1rem;
}
.privacy-group-header {
    display: flex;
    align-items: center;
    margin-bottom: 0.5rem;
}
.privacy-group-header input[type="checkbox"] {
    margin-right: 0.5rem;
    width: auto;
}
.privacy-group-header label {
    font-weight: 700; 
    font-size: 0.9rem;
    color: var(--text-700);
    margin-bottom: 0;
    flex-grow: 1;
}
.privacy-toggle-link {
    font-size: 0.8rem;
    color: var(--ub-purple-700);
    text-decoration: underline;
    cursor: pointer;
    margin-left: 10px;
    white-space: nowrap;
}
.privacy-toggle-link .arrow {
    display: inline-block;
    transition: transform 0.3s ease;
}
.privacy-group.is-open .privacy-toggle-link .arrow {
    transform: rotate(180deg);
}

.privacy-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out;
}
.privacy-group.is-open .privacy-content {
    max-height: 200px; 
    overflow-y: auto; 
}

.privacy-box {
    background-color: var(--white);
    border: 1px solid #ccc;
    border-radius: var(--radius-md);
    padding: 10px;
    font-size: 0.8rem;
    color: var(--text-600);
    line-height: 1.5;
    margin-top: 0.25rem;
}
.privacy-box p {
    font-size: 0.8rem;
    color: var(--text-600);
    line-height: 1.5;
    margin-top: 0;
    margin-bottom: 0.5rem;
}
.privacy-box strong {
    font-weight: 600;
    color: var(--text-700);
}


/* ----------------------------------------------------
   7) Buttons (로딩 스피너)
---------------------------------------------------- */
.form-navigation { display: flex; justify-content: space-between; margin-top: 0; }
.btn {
    padding: 0.85rem 1.75rem;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex; 
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}
.btn-prev { background-color: #e0e0e0; color: var(--text-700); }
.btn-prev:hover { background-color: #ccc; }

.btn-next,
.btn-submit,
#success-message .btn {
    background-color: var(--ub-purple-700); 
    color: var(--white); 
}
.btn-next:hover,
.btn-submit:hover,
#success-message .btn:hover { 
    background-color: var(--ub-purple-dark); 
    transform: translateY(-2px); 
    box-shadow: 0 4px 10px rgba(109, 40, 210, 0.3); 
}

.btn-submit {
    overflow: hidden;
    position: relative;
}
.btn-prev, .btn-submit { display: none; } 

.btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}
.spinner {
    display: inline-block;
    width: 1em;
    height: 1em;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--white);
    animation: spin 1s ease-in-out infinite;
    margin-left: 0.75em;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}

.btn-next::before,
.btn-submit::before,
#success-message .btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transform: skewX(-30deg);
    transition: left 0.7s ease;
}
.btn-next:hover::before,
.btn-submit:hover::before,
#success-message .btn:hover::before {
    left: 150%;
}


/* ----------------------------------------------------
   8) Success Message
---------------------------------------------------- */
#success-message {
    text-align: center;
    padding: 4rem 2rem;
    animation: fadeIn 0.5s ease-in-out;
}
#success-message h3 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--ub-purple-700);
    margin-bottom: 1rem;
}
#success-message p {
    font-size: 1rem;
    color: var(--text-600);
    line-height: 1.6;
    margin-bottom: 2rem;
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}


/* ----------------------------------------------------
   9) Responsive (모바일 화면 수정)
---------------------------------------------------- */
@media (max-width: 768px) {
    body {
        padding: 0; 
        display: block; 
        min-height: 100dvh; 
        align-items: stretch; 
    }
    .form-container {
        flex-direction: column; 
        width: 100%; 
        max-width: 100%; 
        margin: 0; 
        border-radius: 0; 
        box-shadow: none; 
    }
    .info-pane { display: none; }
    .form-pane { width: 100%; padding: 2rem 1.5rem; }
    .mobile-logo { display: block; }
    
    .mobile-info-pane {
        display: block;
        background-color: var(--form-bg-light);
        padding: 1rem;
        border-radius: var(--radius-md);
        margin-bottom: 1.5rem;
        text-align: center;
        font-size: 0.95rem;
        line-height: 1.5;
        border: none; 
    }
    .mobile-info-pane p {
        color: var(--text-700);
        margin: 0;
    }
    .mobile-info-pane p strong {
        color: var(--ub-purple-700);
        font-weight: 700;
    }
    .mobile-info-pane .mobile-trusted-by {
        font-size: 0.85rem;
        color: var(--text-600);
        margin-top: 0.5rem;
    }
    
    .form-intro {
        line-height: 1.5;
        border: none; 
    }

    /* [수정] 모바일 프로그레스 바 */
    .progress-bar {
        grid-template-columns: 1fr; /* 세로로 쌓음 */
        gap: 0;
        margin-bottom: 1.5rem;
    }
    .progress-bar::before, .progress-bar-fill {
        display: none; /* 선 제거 */
    }
    .progress-step {
        flex-direction: row; /* 가로 정렬 */
        justify-content: center;
        padding: 0.5rem;
    }
    .progress-step.active {
        background: var(--form-bg-light); /* 활성 스텝 배경색 */
        border-radius: var(--radius-md);
    }
    .progress-step:not(.active) {
        display: none; /* 활성 스텝만 보임 */
    }
    .step-circle {
        width: 24px; /* 모바일에서 원 크기 살짝 줄임 */
        height: 24px;
        font-size: 0.8rem;
        margin-right: 0.5rem; /* 숫자와 라벨 사이 간격 */
    }
    .progress-step.check .step-circle {
        font-size: 0.9rem;
    }
    .step-checkmark {
        font-size: 1rem; /* 모바일 V자 크기 */
    }


    .step-title { font-size: 1.4rem; }
    .form-group .icon { top: 0.8rem; }
    .form-group.floating label { top: 0.8rem; }
    
    .form-group .icon-feedback { display: none; }
    input[type="email"] { padding-right: 3rem; }
}

/* ----------------------------------------------------
   10) Polishes (선택 효과 & 마우스 파티클)
---------------------------------------------------- */
::selection { background: rgba(164, 53, 240, 0.25); }
img { max-width: 100%; height: auto; display: block; }

.particle {
    position: absolute;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--ub-purple-700);
    opacity: 1; 
    pointer-events: none;
    animation: fadeOut 1s forwards;
    z-index: 10;
}
@keyframes fadeOut {
    to {
        opacity: 0;
        transform: scale(0.5);
    }
}