/* ============================================================
   피씨마켓 디자인 시스템 — style.css
   Primary  : #2563EB (brand-600)
   Accent   : #F59E0B (amber-500)
   BG Base  : #FFFFFF
   BG Subtle: #F8FAFC
   ============================================================ */

/* ── CSS 커스텀 프로퍼티 ── */
:root {
    --color-primary:       #2563EB;
    --color-primary-dark:  #1D4ED8;
    --color-primary-light: #EFF6FF;
    --color-accent:        #F59E0B;
    --color-accent-dark:   #D97706;
    --color-accent-light:  #FFFBEB;
    --color-bg:            #FFFFFF;
    --color-bg-subtle:     #F8FAFC;
    --color-border:        #E2E8F0;
    --color-text:          #1E293B;
    --color-text-muted:    #64748B;
    --radius-md:           8px;
    --radius-lg:           12px;
    --radius-xl:           16px;
    --shadow-sm:           0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
    --shadow-md:           0 4px 12px rgba(0,0,0,.08), 0 2px 4px rgba(0,0,0,.04);
    --shadow-lg:           0 10px 30px rgba(0,0,0,.10), 0 4px 8px rgba(0,0,0,.04);
    --shadow-brand:        0 4px 14px rgba(37,99,235,.30);
    --shadow-accent:       0 4px 14px rgba(245,158,11,.35);
    --transition:          150ms cubic-bezier(.4,0,.2,1);
}

/* ── 기본 리셋 / 전역 ── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Pretendard', 'Noto Sans KR', -apple-system, BlinkMacSystemFont,
                 'Segoe UI', sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ── 섹션 배경 교차 ── */
.section-white  { background-color: var(--color-bg); }
.section-subtle { background-color: var(--color-bg-subtle); }

/* ── 버튼 기본 ── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .375rem;
    padding: .625rem 1.25rem;
    border-radius: var(--radius-md);
    font-size: .875rem;
    font-weight: 700;
    line-height: 1;
    border: 2px solid transparent;
    cursor: pointer;
    transition: background-color var(--transition),
                color           var(--transition),
                border-color    var(--transition),
                box-shadow      var(--transition),
                transform       var(--transition);
    text-decoration: none;
    white-space: nowrap;
}
.btn:active { transform: translateY(1px); }

/* Primary */
.btn-primary {
    background-color: var(--color-primary);
    color: #fff;
    box-shadow: var(--shadow-brand);
}
.btn-primary:hover {
    background-color: var(--color-primary-dark);
    box-shadow: 0 6px 18px rgba(37,99,235,.40);
}

/* Accent (오렌지) — CTA용 */
.btn-accent {
    background-color: var(--color-accent);
    color: #fff;
    box-shadow: var(--shadow-accent);
}
.btn-accent:hover {
    background-color: var(--color-accent-dark);
    box-shadow: 0 6px 18px rgba(245,158,11,.45);
}

/* Outline */
.btn-outline {
    background-color: transparent;
    border-color: var(--color-primary);
    color: var(--color-primary);
}
.btn-outline:hover {
    background-color: var(--color-primary);
    color: #fff;
}

/* Ghost */
.btn-ghost {
    background-color: transparent;
    color: var(--color-text-muted);
    border-color: var(--color-border);
}
.btn-ghost:hover {
    background-color: var(--color-bg-subtle);
    color: var(--color-text);
}

/* Sizes */
.btn-sm  { padding: .375rem .875rem; font-size: .8125rem; }
.btn-lg  { padding: .875rem 1.75rem; font-size: 1rem; }

/* ── 카드 ── */
.card {
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition), border-color var(--transition), transform var(--transition);
    overflow: hidden;
}
.card:hover {
    box-shadow: var(--shadow-md);
    border-color: #BFDBFE;
}
.card-lift:hover { transform: translateY(-3px); }

/* ── 배지 ── */
.badge {
    display: inline-flex;
    align-items: center;
    padding: .2rem .55rem;
    border-radius: 4px;
    font-size: .7rem;
    font-weight: 700;
    line-height: 1;
    border: 1px solid transparent;
}
.badge-s   { background:#d1fae5; color:#065f46; border-color:#6ee7b7; }
.badge-a   { background:#dbeafe; color:#1d4ed8; border-color:#93c5fd; }
.badge-b   { background:#fef3c7; color:#92400e; border-color:#fcd34d; }
.badge-c   { background:#f1f5f9; color:#475569; border-color:#cbd5e1; }
.badge-accent { background:var(--color-accent-light); color:var(--color-accent-dark); border-color:#fcd34d; }
.badge-new    { background:var(--color-primary-light); color:var(--color-primary); border-color:#93c5fd; }

/* ── 부품 카드 전용 ── */
.part-card {
    display: flex;
    flex-direction: column;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: box-shadow var(--transition), border-color var(--transition), transform var(--transition);
}
.part-card:hover {
    box-shadow: 0 16px 40px rgba(37,99,235,.13), 0 4px 12px rgba(0,0,0,.07);
    border-color: #93c5fd;
    transform: translateY(-6px);
}

/* 가격 강조 */
.part-card .part-price {
    font-size: 1.2rem;
    font-weight: 800;
    color: #1d4ed8;
    letter-spacing: -.03em;
}
.part-card .part-img-wrap {
    position: relative;
    aspect-ratio: 16/9;
    background-color: var(--color-bg-subtle);
    overflow: hidden;
}
.part-card .part-img-wrap img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform .35s ease;
}
.part-card:hover .part-img-wrap img { transform: scale(1.06); }
.part-card .part-body {
    display: flex;
    flex-direction: column;
    flex: 1;
    padding: 1rem;
    gap: .5rem;
}
.part-card .part-name {
    font-size: .9rem;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.part-card .part-desc {
    font-size: .78rem;
    color: var(--color-text-muted);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.part-card .part-price {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--color-primary);
}
.part-card .part-price span { font-size: .8rem; font-weight: 500; }
.part-card .part-cta {
    display: block;
    width: 100%;
    text-align: center;
    padding: .65rem 1rem;
    background-color: var(--color-primary);
    color: #fff;
    font-size: .84rem;
    font-weight: 700;
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: background-color var(--transition), box-shadow var(--transition);
    box-shadow: var(--shadow-brand);
    margin-top: auto;
}
.part-card .part-cta:hover {
    background-color: var(--color-primary-dark);
    box-shadow: 0 6px 18px rgba(37,99,235,.40);
}

/* 특가 강조 배지 */
.part-card .badge-special {
    position: absolute;
    top: .5rem;
    right: .5rem;
    background: var(--color-accent);
    color: #fff;
    font-size: .68rem;
    font-weight: 800;
    padding: .2rem .55rem;
    border-radius: 4px;
    box-shadow: var(--shadow-accent);
}

/* ── 인풋 / 셀렉트 공통 ── */
.form-control {
    width: 100%;
    padding: .625rem .875rem;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: .875rem;
    color: var(--color-text);
    background-color: var(--color-bg);
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
}
.form-control:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,.15);
}

/* ── 페이지 타이틀 헤더 (다크) ── */
.page-hero {
    background: linear-gradient(135deg, #0d1117 0%, #141824 60%, #1a2540 100%);
    border-bottom: 1px solid rgba(255,255,255,.07);
}

/* ── 정보 아이콘 행 ── */
.info-row {
    display: flex;
    align-items: flex-start;
    gap: .75rem;
    padding: .75rem 0;
    border-bottom: 1px solid var(--color-border);
}
.info-row:last-child { border-bottom: none; }
.info-icon {
    width: 2.25rem;
    height: 2.25rem;
    border-radius: var(--radius-md);
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 1rem;
}
.info-label { font-size: .7rem; color: var(--color-text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: .05em; }
.info-value { font-size: .875rem; color: var(--color-text); font-weight: 600; margin-top: .1rem; line-height: 1.45; }

/* ── 단계 번호 ── */
.step-number {
    width: 2rem; height: 2rem;
    border-radius: 50%;
    background-color: var(--color-primary);
    color: #fff;
    font-size: .78rem;
    font-weight: 800;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}

/* ── 필터 버튼 ── */
.filter-btn {
    padding: .35rem .85rem;
    border-radius: 9999px;
    font-size: .78rem;
    font-weight: 700;
    border: 1.5px solid var(--color-border);
    background-color: var(--color-bg);
    color: var(--color-text-muted);
    cursor: pointer;
    transition: background-color var(--transition), color var(--transition), border-color var(--transition);
}
.filter-btn:hover   { border-color: var(--color-primary); color: var(--color-primary); }
.filter-btn.active  { background-color: var(--color-primary); border-color: var(--color-primary); color: #fff; }

/* ── 아이콘 전용 박스 ── */
.icon-box {
    width: 2.75rem; height: 2.75rem;
    border-radius: var(--radius-md);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}
.icon-box-primary { background-color: var(--color-primary-light); color: var(--color-primary); }
.icon-box-accent  { background-color: var(--color-accent-light);  color: var(--color-accent-dark); }

/* ── 반응형 헬퍼 ── */
@media (max-width: 639px) {
    .btn-lg { padding: .75rem 1.25rem; font-size: .9rem; }
}