/* ================================================
   누구업소야 - Main Page CSS
   AI 기반 Local Business Operating Platform
   ================================================ */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@300;400;500;600;700;800;900&display=swap');

:root {
    --nb-primary: #4361EE;
    --nb-primary-dark: #3A0CA3;
    --nb-primary-light: #7B8FF7;
    --nb-accent: #F72585;
    --nb-accent-light: #FF85B3;
    --nb-success: #06D6A0;
    --nb-warning: #FFD166;
    --nb-dark: #1A1A2E;
    --nb-gray-900: #16213E;
    --nb-gray-700: #334155;
    --nb-gray-500: #64748B;
    --nb-gray-300: #CBD5E1;
    --nb-gray-100: #F1F5F9;
    --nb-white: #FFFFFF;
    --nb-radius: 16px;
    --nb-radius-sm: 10px;
    --nb-shadow: 0 4px 24px rgba(0,0,0,0.08);
    --nb-shadow-lg: 0 12px 40px rgba(67,97,238,0.15);
    --nb-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Reset ── */
.nb_main * { box-sizing: border-box; margin: 0; padding: 0; }
.nb_main { font-family: 'Noto Sans KR', -apple-system, sans-serif; color: var(--nb-gray-700); line-height: 1.6; }
.nb_main a { text-decoration: none; color: inherit; }
.nb_main img { max-width: 100%; }

/* ── Top Navigation Bar ── */
.nb_topbar {
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(12px);
    padding: 12px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}
.nb_topbar_logo {
    font-size: 20px;
    font-weight: 900;
    color: #fff;
}
.nb_topbar_logo span { color: var(--nb-primary); }
.nb_topbar_right {
    display: flex;
    align-items: center;
    gap: 8px;
}
.nb_topbar_btn {
    display: inline-block;
    padding: 7px 16px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    color: rgba(255,255,255,0.7);
    transition: var(--nb-transition);
}
.nb_topbar_btn:hover { color: #fff; background: rgba(255,255,255,0.1); }
.nb_topbar_btn.login {
    background: var(--nb-primary);
    color: #fff;
    border-radius: 20px;
}
.nb_topbar_btn.login:hover { background: var(--nb-primary-dark); }
.nb_topbar_btn.admin {
    background: linear-gradient(135deg, #F72585, #B5179E);
    color: #fff;
    border-radius: 20px;
}
.nb_topbar_btn.admin:hover { opacity: 0.9; }
.nb_topbar_btn.logout { color: rgba(255,255,255,0.4); font-weight: 400; }
.nb_topbar_btn.logout:hover { color: #EF4444; }

@media (max-width: 768px) {
    .nb_topbar_btn { padding: 6px 10px; font-size: 12px; }
    .nb_topbar_logo { font-size: 18px; }
}

/* ── Section Common ── */
.nb_section { padding: 60px 0; }
.nb_container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.nb_section_title { font-size: 28px; font-weight: 800; color: var(--nb-dark); text-align: center; margin-bottom: 12px; }
.nb_section_sub { font-size: 16px; color: var(--nb-gray-500); text-align: center; margin-bottom: 40px; }
.nb_section_title em { color: var(--nb-primary); font-style: normal; }

/* ══════════════════════════
   1. HERO
   ══════════════════════════ */
.nb_hero {
    background: linear-gradient(135deg, #4361EE 0%, #3A0CA3 50%, #7209B7 100%);
    padding: 80px 0 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.nb_hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
    border-radius: 50%;
}
.nb_hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(247,37,133,0.15) 0%, transparent 70%);
    border-radius: 50%;
}
.nb_hero_content { position: relative; z-index: 1; }
.nb_hero_badge {
    display: inline-block;
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(10px);
    color: #fff;
    padding: 6px 20px;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 20px;
    border: 1px solid rgba(255,255,255,0.2);
}
.nb_hero h1 {
    font-size: 48px;
    font-weight: 900;
    color: #fff;
    line-height: 1.3;
    margin-bottom: 16px;
    letter-spacing: -1px;
}
.nb_hero h1 span { color: var(--nb-warning); }
.nb_hero_desc {
    font-size: 18px;
    color: rgba(255,255,255,0.8);
    margin-bottom: 40px;
    font-weight: 300;
}

/* ── Search Box ── */
.nb_search_box {
    max-width: 680px;
    margin: 0 auto;
    position: relative;
}
.nb_search_box input {
    width: 100%;
    padding: 20px 70px 20px 28px;
    border: none;
    border-radius: 60px;
    font-size: 18px;
    font-family: 'Noto Sans KR', sans-serif;
    background: var(--nb-white);
    box-shadow: 0 8px 32px rgba(0,0,0,0.2);
    outline: none;
    transition: var(--nb-transition);
}
.nb_search_box input:focus { box-shadow: 0 8px 40px rgba(0,0,0,0.3); }
.nb_search_box input::placeholder { color: var(--nb-gray-300); }
.nb_search_btn {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    width: 52px;
    height: 52px;
    border: none;
    border-radius: 50%;
    background: var(--nb-primary);
    color: #fff;
    font-size: 22px;
    cursor: pointer;
    transition: var(--nb-transition);
    display: flex;
    align-items: center;
    justify-content: center;
}
.nb_search_btn:hover { background: var(--nb-primary-dark); transform: translateY(-50%) scale(1.05); }

/* ── Quick Tags ── */
.nb_quick_tags {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 24px;
    flex-wrap: wrap;
}
.nb_quick_tag {
    display: inline-block;
    padding: 8px 18px;
    background: rgba(255,255,255,0.12);
    backdrop-filter: blur(4px);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 50px;
    color: #fff;
    font-size: 14px;
    cursor: pointer;
    transition: var(--nb-transition);
}
.nb_quick_tag:hover { background: rgba(255,255,255,0.25); transform: translateY(-2px); }

/* ══════════════════════════
   2. CATEGORY
   ══════════════════════════ */
.nb_cat_section { background: var(--nb-white); }
.nb_cat_grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
}
.nb_cat_card {
    background: var(--nb-white);
    border: 1px solid var(--nb-gray-100);
    border-radius: var(--nb-radius);
    padding: 28px 16px;
    text-align: center;
    cursor: pointer;
    transition: var(--nb-transition);
    position: relative;
    overflow: hidden;
}
.nb_cat_card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--nb-primary), var(--nb-accent));
    transform: scaleX(0);
    transition: var(--nb-transition);
}
.nb_cat_card:hover {
    transform: translateY(-6px);
    box-shadow: var(--nb-shadow-lg);
    border-color: var(--nb-primary-light);
}
.nb_cat_card:hover::before { transform: scaleX(1); }
.nb_cat_icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 14px;
    background: linear-gradient(135deg, var(--nb-gray-100), #E8EDFF);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    transition: var(--nb-transition);
}
.nb_cat_card:hover .nb_cat_icon {
    background: linear-gradient(135deg, var(--nb-primary), var(--nb-primary-dark));
    transform: scale(1.1) rotate(-5deg);
}
.nb_cat_card:hover .nb_cat_icon { filter: grayscale(0); }
.nb_cat_name { font-size: 15px; font-weight: 600; color: var(--nb-dark); margin-bottom: 4px; }
.nb_cat_count { font-size: 12px; color: var(--nb-gray-500); }

/* ══════════════════════════
   3. REGION (지역검색)
   ══════════════════════════ */
.nb_region_section { background: var(--nb-gray-100); }
.nb_region_grid {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}
.nb_region_btn {
    padding: 12px 24px;
    background: var(--nb-white);
    border: 1px solid var(--nb-gray-300);
    border-radius: 50px;
    font-size: 15px;
    font-weight: 500;
    color: var(--nb-gray-700);
    cursor: pointer;
    transition: var(--nb-transition);
    font-family: 'Noto Sans KR', sans-serif;
}
.nb_region_btn:hover {
    background: var(--nb-primary);
    color: #fff;
    border-color: var(--nb-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(67,97,238,0.3);
}

/* ══════════════════════════
   4. BUSINESS CARDS (업체)
   ══════════════════════════ */
.nb_biz_section { background: var(--nb-white); }
.nb_biz_grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.nb_biz_card {
    background: var(--nb-white);
    border: 1px solid var(--nb-gray-100);
    border-radius: var(--nb-radius);
    overflow: hidden;
    transition: var(--nb-transition);
    cursor: pointer;
}
.nb_biz_card:hover {
    transform: translateY(-8px);
    box-shadow: var(--nb-shadow-lg);
}
.nb_biz_thumb {
    width: 100%;
    height: 180px;
    background: linear-gradient(135deg, #E8EDFF, #F0E6FF);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    position: relative;
}
.nb_biz_badge {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    color: #fff;
}
.nb_biz_badge.new { background: var(--nb-accent); }
.nb_biz_badge.hot { background: var(--nb-primary); }
.nb_biz_badge.ai  { background: linear-gradient(135deg, #7209B7, #F72585); }
.nb_biz_info { padding: 18px; }
.nb_biz_cat { font-size: 12px; color: var(--nb-primary); font-weight: 600; margin-bottom: 6px; }
.nb_biz_name { font-size: 17px; font-weight: 700; color: var(--nb-dark); margin-bottom: 6px; }
.nb_biz_desc { font-size: 13px; color: var(--nb-gray-500); margin-bottom: 10px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.nb_biz_meta { display: flex; align-items: center; gap: 12px; font-size: 13px; }
.nb_biz_rating { color: var(--nb-warning); font-weight: 700; }
.nb_biz_rating span { color: var(--nb-gray-500); font-weight: 400; }
.nb_biz_loc { color: var(--nb-gray-500); }

/* ══════════════════════════
   5. CTA (역경매 + AI)
   ══════════════════════════ */
.nb_cta_section { background: var(--nb-gray-100); }
.nb_cta_grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.nb_cta_card {
    border-radius: var(--nb-radius);
    padding: 48px 40px;
    color: #fff;
    position: relative;
    overflow: hidden;
    transition: var(--nb-transition);
}
.nb_cta_card:hover { transform: translateY(-4px); }
.nb_cta_auction {
    background: linear-gradient(135deg, #4361EE, #3A0CA3);
}
.nb_cta_ai {
    background: linear-gradient(135deg, #7209B7, #F72585);
}
.nb_cta_card::after {
    content: '';
    position: absolute;
    right: -40px;
    bottom: -40px;
    width: 200px;
    height: 200px;
    background: rgba(255,255,255,0.08);
    border-radius: 50%;
}
.nb_cta_card h3 { font-size: 26px; font-weight: 800; margin-bottom: 12px; position: relative; z-index: 1; }
.nb_cta_card p { font-size: 15px; opacity: 0.85; margin-bottom: 24px; position: relative; z-index: 1; line-height: 1.6; }
.nb_cta_btn {
    display: inline-block;
    padding: 14px 32px;
    background: rgba(255,255,255,0.2);
    backdrop-filter: blur(4px);
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 50px;
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--nb-transition);
    position: relative;
    z-index: 1;
}
.nb_cta_btn:hover { background: rgba(255,255,255,0.35); transform: translateX(4px); }

/* ══════════════════════════
   6. NOTICE (공지)
   ══════════════════════════ */
.nb_notice_section { background: var(--nb-white); padding: 48px 0; }
.nb_notice_list { max-width: 800px; margin: 0 auto; }
.nb_notice_item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
    border-bottom: 1px solid var(--nb-gray-100);
    transition: var(--nb-transition);
}
.nb_notice_item:hover { padding-left: 8px; }
.nb_notice_item a { font-size: 15px; color: var(--nb-gray-700); font-weight: 500; }
.nb_notice_item a:hover { color: var(--nb-primary); }
.nb_notice_date { font-size: 13px; color: var(--nb-gray-500); }

/* ══════════════════════════
   7. STATS BAR
   ══════════════════════════ */
.nb_stats_bar {
    background: var(--nb-dark);
    padding: 32px 0;
}
.nb_stats_grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    text-align: center;
}
.nb_stat_num { font-size: 32px; font-weight: 800; color: var(--nb-warning); margin-bottom: 4px; }
.nb_stat_label { font-size: 14px; color: rgba(255,255,255,0.6); }

/* ══════════════════════════
   8. FOOTER
   ══════════════════════════ */
.nb_footer {
    background: var(--nb-gray-900);
    padding: 48px 0 32px;
    color: rgba(255,255,255,0.5);
    font-size: 13px;
}
.nb_footer_top { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 32px; }
.nb_footer_logo { font-size: 22px; font-weight: 800; color: #fff; margin-bottom: 8px; }
.nb_footer_desc { font-size: 13px; line-height: 1.8; }
.nb_footer_links a { color: rgba(255,255,255,0.6); margin-right: 20px; transition: var(--nb-transition); }
.nb_footer_links a:hover { color: #fff; }
.nb_footer_bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 20px; text-align: center; font-size: 12px; }

/* ══════════════════════════
   RESPONSIVE
   ══════════════════════════ */
@media (max-width: 1024px) {
    .nb_cat_grid { grid-template-columns: repeat(4, 1fr); }
    .nb_biz_grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .nb_hero { padding: 50px 0 70px; }
    .nb_hero h1 { font-size: 28px; }
    .nb_hero_desc { font-size: 15px; }
    .nb_search_box input { padding: 16px 60px 16px 20px; font-size: 15px; }
    .nb_search_btn { width: 44px; height: 44px; font-size: 18px; }
    .nb_section { padding: 40px 0; }
    .nb_section_title { font-size: 22px; }
    .nb_cat_grid { grid-template-columns: repeat(3, 1fr); gap: 10px; }
    .nb_cat_card { padding: 20px 10px; }
    .nb_cat_icon { width: 44px; height: 44px; font-size: 22px; }
    .nb_biz_grid { grid-template-columns: 1fr; }
    .nb_cta_grid { grid-template-columns: 1fr; }
    .nb_cta_card { padding: 32px 24px; }
    .nb_stats_grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .nb_stat_num { font-size: 24px; }
    .nb_footer_top { flex-direction: column; gap: 20px; }
    .nb_quick_tags { gap: 6px; }
    .nb_quick_tag { padding: 6px 14px; font-size: 13px; }
}
@media (max-width: 480px) {
    .nb_cat_grid { grid-template-columns: repeat(2, 1fr); }
    .nb_hero h1 { font-size: 24px; }
    .nb_region_btn { padding: 10px 16px; font-size: 13px; }
    .nb_hero_badge { font-size: 11px; padding: 5px 14px; }
    .nb_section_sub { font-size: 14px; margin-bottom: 24px; }
    .nb_biz_thumb { height: 140px; font-size: 36px; }
    .nb_cta_card h3 { font-size: 20px; }
    .nb_cta_btn { padding: 12px 24px; font-size: 14px; }
}

/* ══════════════════════════
   MOBILE BOTTOM NAV
   ══════════════════════════ */
.nb_mobile_nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background: #fff;
    box-shadow: 0 -2px 16px rgba(0,0,0,0.08);
    z-index: 9999;
    padding: 6px 0 env(safe-area-inset-bottom, 6px);
}
.nb_mobile_nav_inner {
    display: flex;
    justify-content: space-around;
    align-items: center;
}
.nb_mobile_nav_item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 8px 12px;
    font-size: 10px;
    font-weight: 500;
    color: #94A3B8;
    text-decoration: none;
    transition: color 0.2s;
}
.nb_mobile_nav_item.active,
.nb_mobile_nav_item:hover { color: #4361EE; }
.nb_mobile_nav_icon { font-size: 20px; }

@media (max-width: 768px) {
    .nb_mobile_nav { display: block; }
    .nb_main { padding-bottom: 70px; }
    .nb_footer { padding-bottom: 80px; }
}

/* ══════════════════════════
   TOUCH / ACCESSIBILITY
   ══════════════════════════ */
@media (hover: none) {
    .nb_cat_card:hover { transform: none; box-shadow: none; }
    .nb_biz_card:hover { transform: none; box-shadow: none; }
    .nb_cat_card:active { transform: scale(0.97); }
    .nb_biz_card:active { transform: scale(0.98); }
    .nb_region_btn:active { background: var(--nb-primary); color: #fff; }
    .nb_quick_tag:active { background: rgba(255,255,255,0.3); }
}

/* ── Smooth scroll ── */
html { scroll-behavior: smooth; }
.nb_main { -webkit-overflow-scrolling: touch; }

/* ── 노치/다이나믹 아일랜드 대응 ── */
@supports (padding-top: env(safe-area-inset-top)) {
    .nb_hero { padding-top: calc(80px + env(safe-area-inset-top)); }
}