:root {
    --color-pitch-black: #000000;
    --color-charcoal-canvas: #222326;
    --color-graphite-base: #0d0d0e;
    --color-deep-slate: #272c33;
    --color-pure-white: #ffffff;
    --color-silver-mist: #9ea0a9;
    --color-action-raspberry: #e32652;
    --color-interactive-lime: #dcff00;
    --color-highlight-gold: #eed37f;
}

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

body {
    background-color: var(--color-charcoal-canvas);
    color: var(--color-pure-white);
    font-family: 'Inter', sans-serif;
    display: flex;
    justify-content: center;
}

.mobile-container {
    width: 100%;
    max-width: 480px;
    background-color: var(--color-pitch-black);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding-bottom: 60px;
}

.sticky-nav {
    position: sticky;
    top: 0;
    background-color: var(--color-graphite-base);
    padding: 16px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #1c1c1e;
    z-index: 100;
}

.nav-logo {
    font-weight: 600;
    font-size: 14px;
}

.nav-logo span {
    color: var(--color-interactive-lime);
    margin-right: 6px;
}

/* 버튼 공통 스타일 */
.btn {
    display: flex;
    justify-content: center;
    align-items: center;
    text-decoration: none;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
}

/* 1. Primary 버튼 (최종 신청/강력한 강조) */
.btn-primary {
    background-color: var(--color-action-raspberry);
    color: var(--color-pure-white);
    padding: 16px;
    font-size: 16px;
    width: 100%;
    box-shadow: 0 4px 12px rgba(227, 38, 82, 0.4);
}
.btn-primary:active { transform: translateY(2px); }

/* 2. Secondary 버튼 (전화 문의 등) */
.btn-secondary {
    background-color: var(--color-interactive-lime);
    color: var(--color-pitch-black);
    padding: 10px 16px;
    font-size: 14px;
}
.btn-secondary:active { transform: translateY(2px); }

/* 3. Outline 버튼 (상세 정보 보기) */
.btn-outline {
    background-color: transparent;
    border: 1px solid var(--color-interactive-lime);
    color: var(--color-interactive-lime);
    padding: 14px;
    font-size: 14px;
    width: 100%;
}
.btn-outline:active { background-color: rgba(220, 255, 0, 0.1); }

/* 4. Ghost 버튼 (닫기, 뒤로가기) */
.btn-ghost {
    background-color: var(--color-deep-slate);
    color: var(--color-silver-mist);
    padding: 14px;
    font-size: 14px;
    width: 100%;
}
.btn-ghost:active { background-color: var(--color-graphite-base); }

.hero-section {
    padding: 42px 24px 24px 24px;
}

.hero-title {
    font-family: 'Oswald', sans-serif;
    font-size: 36px;
    font-weight: 500;
    line-height: 1.1;
    letter-spacing: -0.03em;
}

.hero-subtitle {
    font-size: 13px;
    color: var(--color-silver-mist);
    margin-top: 12px;
    line-height: 1.4;
}

.campaign-container {
    padding: 0 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* 메인 카드 스타일 */
.campaign-card {
    background-color: var(--color-deep-slate);
    border-radius: 8px;
    padding: 20px;
    text-decoration: none;
    color: var(--color-pure-white);
    display: flex;
    flex-direction: column;
    gap: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.campaign-card.active {
    border-color: var(--color-highlight-gold);
}

.badge-status {
    align-self: flex-start;
    background-color: var(--color-interactive-lime);
    color: var(--color-pitch-black);
    font-size: 10px;
    font-weight: 600;
    padding: 3px 8px;
    border-radius: 20px;
}

.card-title {
    font-size: 19px;
    font-weight: 600;
    margin-top: 4px;
}

.card-price {
    font-size: 14px;
    color: var(--color-interactive-lime);
    font-weight: 600;
}

.card-period {
    font-size: 12px;
    color: var(--color-silver-mist);
}

/* 클릭 유도 아이콘 애니메이션 */
.click-arrow {
    align-self: flex-end;
    font-size: 16px;
    color: var(--color-highlight-gold);
    animation: bounce 1s infinite alternate;
}

@keyframes bounce {
    from { transform: translateY(0); }
    to { transform: translateY(6px); }
}

/* 분기 전개 영역 스타일 */
.expanded-content {
    display: none;
    background-color: #16181b;
    border-radius: 0 0 8px 8px;
    padding: 20px;
    border-top: 1px solid #2c2c2e;
    margin-top: -8px;
    margin-bottom: 12px;
}

/* 전단지 발췌 시네마틱 블록 */
.flyer-extract {
    background-color: var(--color-graphite-base);
    border-radius: 6px;
    padding: 16px;
    margin-bottom: 20px;
    border-left: 3px solid var(--color-action-raspberry);
}

.flyer-tag {
    font-size: 12px;
    color: var(--color-action-raspberry);
    font-weight: 600;
    margin-bottom: 4px;
}

.flyer-text {
    font-size: 15px;
    font-weight: 600;
    line-height: 1.5;
    color: var(--color-pure-white);
}

.flyer-text span {
    color: var(--color-interactive-lime);
}

/* 양식 스타일 */
.form-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 12px;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 16px;
}

.input-group input {
    background-color: transparent;
    border: 1px solid var(--color-pure-white);
    color: var(--color-pure-white);
    padding: 12px;
    font-size: 14px;
    border-radius: 0px;
    outline: none;
}

.input-group input::placeholder {
    color: #596170;
}

/* --- 모바일 폼 행동 유도성(Affordance) 극대화 UX 디자인 시스템 --- */
.form-field-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 16px;
    background-color: #1a1c20;
    padding: 14px 16px;
    border-radius: 10px;
    border: 1px solid #33363d;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.25);
    transition: all 0.25s ease;
}

.form-field-item:focus-within {
    border-color: var(--color-interactive-lime);
    background-color: #202329;
    box-shadow: 0 0 0 3px rgba(220, 255, 0, 0.15), inset 0 2px 4px rgba(0, 0, 0, 0.2);
}

.form-field-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.form-field-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-pure-white);
    display: flex;
    align-items: center;
    gap: 6px;
}

.form-field-badge {
    font-size: 11px;
    font-weight: 600;
    color: var(--color-pitch-black);
    background-color: var(--color-interactive-lime);
    padding: 3px 8px;
    border-radius: 12px;
    letter-spacing: -0.02em;
    box-shadow: 0 2px 6px rgba(220, 255, 0, 0.3);
    animation: pulse-soft 2s infinite;
}

@keyframes pulse-soft {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.85; transform: scale(0.97); }
}

.form-field-input-box {
    position: relative;
    display: flex;
    align-items: center;
}

.form-field-input-box input {
    width: 100%;
    background: transparent !important;
    border: none !important;
    color: #a0a6b2 !important; /* 기본 상태에서는 부드럽고 은은한 색상으로 디폴트 값 표시 */
    font-size: 16px !important;
    font-weight: 600 !important;
    padding: 4px 0 !important;
    outline: none !important;
    caret-color: var(--color-interactive-lime);
}

.form-field-input-box input:focus {
    color: var(--color-pure-white) !important; /* 클릭하여 입력할 때는 밝고 선명한 색상으로 전환 */
}

.form-field-input-box input::placeholder {
    color: #636b78 !important;
    font-weight: 400 !important;
    font-size: 14px !important;
}

.form-field-hint {
    font-size: 12px;
    color: #8a93a5;
    line-height: 1.4;
    display: flex;
    align-items: center;
    gap: 4px;
}
.form-field-hint span {
    color: var(--color-interactive-lime);
    font-weight: 600;
}

/* 버튼 디자인 시스템 교체 완료 */

.footer-area {
    padding: 40px 24px 24px 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.quick-links {
    display: flex;
    gap: 16px;
    font-size: 13px;
}

.quick-links a {
    color: var(--color-silver-mist);
}

.brand-footer {
    font-size: 11px;
    color: #596170;
}