/*
  실시세 (TradePrice) V2.1 Design System
  Theme: "White & Crimson Rose" — 타이포 고급화 + 디테일 강화
  Font: Pretendard (본문) + Inter (숫자)
  Icons: Phosphor Icons
*/

/* ===== CSS VARIABLES ===== */
:root {
	--crimson:       #E8364E;
	--crimson-dark:  #C42D42;
	--crimson-light: #FEE2E6;
	--crimson-soft:  #FFF1F3;
	--crimson-glow:  rgba(232,54,78,0.12);

	--bg:            #FEFCFB;
	--white:         #FFFFFF;
	--dark:          #1A1A2E;
	--gray-dark:     #4B5563;
	--gray:          #6B7280;
	--gray-light:    #F3F4F6;
	--border:        #E5E7EB;

	--shadow-sm:  0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.03);
	--shadow-md:  0 4px 16px rgba(0,0,0,0.06);
	--shadow-lg:  0 10px 24px rgba(0,0,0,0.05), 0 20px 48px rgba(0,0,0,0.05), 0 1px 4px rgba(0,0,0,0.03);

	--ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ===== BASE RESET ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
	font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
	color: var(--dark);
	background: var(--bg);
	overflow-x: hidden;
	line-height: 1.7;
	letter-spacing: -0.01em;
	word-break: keep-all;
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
}

h1, h2, h3 {
	font-weight: 800;
	line-height: 1.2;
	letter-spacing: -0.05em;
	color: var(--dark);
}

p { color: var(--gray-dark); line-height: 1.8; }
a { text-decoration: none; color: inherit; transition: color 0.2s; }
button { font-family: inherit; cursor: pointer; border: none; }

.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.section { padding: clamp(80px, 12vh, 130px) 0; }
.text-center { text-align: center; }
.desktop-only { display: inline; }
@media (max-width: 768px) { .desktop-only { display: none !important; } }

/* Numbers → Inter */
.stat-num, .counter, .region-price { font-family: 'Inter', 'Pretendard', sans-serif; }

/* ===== SECTION HEADER ===== */
.section-header { margin-bottom: 56px; }
.section-header.text-center p { margin: 0 auto; }

.sub-heading {
	display: inline-flex;
	align-items: center;
	gap: 6px;
	padding: 6px 14px;
	background: var(--crimson-soft);
	color: var(--crimson);
	border: 1px solid var(--crimson-light);
	border-radius: 50px;
	font-size: 12px;
	font-weight: 700;
	letter-spacing: 0.06em;
	text-transform: uppercase;
	margin-bottom: 16px;
}

.section-header h2 {
	font-size: clamp(1.8rem, 4vw, 2.6rem);
	margin-bottom: 14px;
	line-height: 1.4;
}

.section-header p {
	font-size: 16px;
	color: var(--gray);
	max-width: 560px;
	line-height: 1.7;
}

/* ===== NAVBAR ===== */
.navbar {
	position: fixed; top: 0; width: 100%; height: 72px;
	background: rgba(255,255,255,0.88);
	backdrop-filter: blur(20px);
	-webkit-backdrop-filter: blur(20px);
	border-bottom: 1px solid transparent;
	z-index: 1000;
	transition: border-color 0.3s, box-shadow 0.3s;
}
.navbar.scrolled {
	border-bottom-color: var(--border);
	box-shadow: 0 1px 8px rgba(0,0,0,0.04);
}
.nav-inner { display: flex; justify-content: space-between; align-items: center; height: 100%; }
.brand { display: flex; align-items: center; gap: 8px; font-size: 20px; font-weight: 800; color: var(--dark); letter-spacing: -0.03em; }
.brand i { color: var(--crimson); font-size: 24px; }
.nav-links { display: flex; gap: 28px; }
.nav-links a { font-weight: 500; font-size: 14px; color: var(--gray); transition: color 0.2s; }
.nav-links a:hover { color: var(--crimson); }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.mobile-menu-btn { display: none; cursor: pointer; font-size: 1.6rem; color: var(--dark); }

/* ===== BUTTONS ===== */
.btn-primary {
	display: inline-flex; align-items: center; gap: 6px;
	padding: 10px 22px; background: var(--crimson); color: #fff;
	border-radius: 10px; font-size: 14px; font-weight: 600;
	transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
}
.btn-primary:hover { background: var(--crimson-dark); transform: translateY(-1px); box-shadow: 0 4px 12px var(--crimson-glow); }

.btn-cta {
	display: inline-flex; align-items: center; gap: 8px;
	padding: 15px 36px; background: var(--crimson); color: #fff;
	border-radius: 12px; font-size: 16px; font-weight: 700;
	transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
}
.btn-cta:hover { background: var(--crimson-dark); transform: translateY(-2px); box-shadow: 0 6px 24px rgba(232,54,78,0.3); }

/* ===== MOBILE OVERLAY ===== */
.mobile-overlay {
	position: fixed; top: 0; left: 0; width: 100%; height: 100vh;
	background: var(--white); z-index: 2000;
	display: flex; flex-direction: column;
	opacity: 0; pointer-events: none; transition: 0.3s var(--ease);
}
.mobile-overlay.active { opacity: 1; pointer-events: all; }
.mobile-overlay-header { display: flex; justify-content: space-between; align-items: center; padding: 20px 24px; height: 72px; }
.mobile-close { font-size: 1.6rem; color: var(--dark); cursor: pointer; }
.overlay-links { display: flex; flex-direction: column; padding: 40px 24px; }
.overlay-links a { font-size: 22px; font-weight: 700; color: var(--dark); padding: 18px 0; border-bottom: 1px solid var(--gray-light); }
.overlay-links a:hover { color: var(--crimson); }

/* ===== HERO ===== */
.hero {
	display: flex; align-items: center;
	min-height: 80vh; padding: 100px 0 48px;
	background: var(--bg);
	background-image: radial-gradient(circle, rgba(232,54,78,0.04) 1px, transparent 1px);
	background-size: 28px 28px;
	position: relative;
}
.hero::after {
	content: '';
	position: absolute; bottom: 0; left: 0; right: 0; height: 200px;
	background: linear-gradient(to top, var(--bg), transparent);
	pointer-events: none;
}
.hero-content { text-align: center; max-width: 760px; margin: 0 auto; position: relative; z-index: 1; }

.hero-badge {
	display: inline-flex; align-items: center; gap: 6px;
	padding: 7px 18px;
	background: var(--white); color: var(--crimson);
	border: 1px solid var(--crimson-light);
	border-radius: 50px; font-size: 13px; font-weight: 600;
	box-shadow: 0 2px 8px var(--crimson-glow);
	margin-bottom: 28px;
}

.hero h1 {
	font-size: clamp(3rem, 7vw, 4.8rem);
	line-height: 1.05;
	letter-spacing: -0.05em;
	margin-bottom: 18px;
}
.hero h1 .accent { color: var(--crimson); display: block; }
.hero h1 .h1-sub {
	display: block;
	font-size: 0.48em;
	font-weight: 700;
	color: var(--gray-dark);
	letter-spacing: -0.03em;
	margin-top: 14px;
}

.hero-desc {
	font-size: clamp(1rem, 2vw, 1.2rem);
	color: var(--gray); font-weight: 400;
	line-height: 1.8; margin-bottom: 36px;
}

/* Type Tabs */
.type-tabs { display: flex; flex-wrap: wrap; justify-content: center; gap: 5px; margin-bottom: 24px; }
.type-tab {
	display: inline-flex; align-items: center; gap: 4px;
	padding: 7px 13px; background: var(--white);
	border: 1px solid var(--border); border-radius: 10px;
	color: var(--gray); font-size: 13px; font-weight: 500;
	cursor: pointer; transition: 0.2s;
}
.type-tab:hover { border-color: var(--crimson-light); color: var(--crimson); background: var(--crimson-soft); }
.type-tab.active { background: var(--crimson); border-color: var(--crimson); color: #fff; }
.type-tab i { font-size: 15px; }

/* Hero Search */
.hero-search { max-width: 580px; margin: 0 auto; }
.search-box {
	display: flex; align-items: center;
	background: var(--white); border: 1.5px solid var(--border);
	border-radius: 16px; padding: 6px 6px 6px 22px;
	box-shadow: var(--shadow-lg);
	transition: border-color 0.25s, box-shadow 0.25s;
}
.search-box:focus-within { border-color: var(--crimson); box-shadow: 0 0 0 4px var(--crimson-glow), var(--shadow-lg); }
.search-box i { color: var(--crimson); font-size: 20px; margin-right: 12px; flex-shrink: 0; }
.search-box input { flex: 1; background: none; border: none; color: var(--dark); font-size: 15px; font-family: inherit; outline: none; padding: 12px 0; }
.search-box input::placeholder { color: var(--gray); }
.search-btn { padding: 12px 28px; background: var(--crimson); color: #fff; border-radius: 12px; font-size: 15px; font-weight: 700; transition: 0.2s; flex-shrink: 0; }
.search-btn:hover { background: var(--crimson-dark); }

/* ===== STATS ===== */
.stats-section { padding: 0; background: var(--white); border-top: 1px solid var(--gray-light); border-bottom: 1px solid var(--gray-light); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat-card { text-align: center; padding: 40px 16px; position: relative; }
.stat-card:not(:last-child)::after {
	content: ''; position: absolute; right: 0; top: 25%; height: 50%;
	width: 1px; background: var(--gray-light);
}
.stat-icon { font-size: 26px; color: var(--crimson); margin-bottom: 12px; }
.stat-num { font-size: 40px; font-weight: 900; color: var(--dark); display: inline; letter-spacing: -0.03em; }
.stat-suffix { font-size: 18px; font-weight: 700; color: var(--crimson); }
.stat-label { display: block; font-size: 13px; color: var(--gray); margin-top: 4px; font-weight: 500; }

/* ===== PROPERTY TYPE CARDS ===== */
.type-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
.type-card {
	padding: 28px 24px; background: var(--white);
	border-radius: 16px; border: 1px solid var(--gray-light);
	transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), border-color 0.25s;
	cursor: pointer;
}
.type-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--crimson-light); }

.type-icon {
	width: 48px; height: 48px;
	display: flex; align-items: center; justify-content: center;
	background: var(--crimson-soft); border-radius: 14px;
	font-size: 24px; color: var(--crimson);
	margin-bottom: 16px; transition: background 0.25s, color 0.25s;
}
.type-card:hover .type-icon { background: var(--crimson); color: #fff; }

.type-card h3 { font-size: 17px; margin-bottom: 8px; letter-spacing: -0.03em; }
.type-card p { font-size: 14px; color: var(--gray-dark); margin: 0; line-height: 1.6; }
.type-badge {
	display: inline-flex; align-items: center; gap: 4px;
	margin-top: 14px; padding: 4px 10px;
	background: var(--crimson-soft); color: var(--crimson);
	border-radius: 6px; font-size: 12px; font-weight: 600;
}

/* ===== REGION SCROLL ===== */
.region-scroll {
	display: flex; gap: 14px; overflow-x: auto;
	scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch;
	padding-bottom: 8px; scrollbar-width: none;
}
.region-scroll::-webkit-scrollbar { display: none; }
.region-card {
	flex: 0 0 210px; scroll-snap-align: start;
	padding: 24px 20px; background: var(--white);
	border-radius: 16px; border: 1px solid var(--gray-light);
	text-align: center; transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.region-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.region-rank {
	display: inline-flex; align-items: center; justify-content: center;
	width: 28px; height: 28px; background: var(--crimson);
	color: #fff; border-radius: 8px; font-family: 'Inter', sans-serif;
	font-size: 12px; font-weight: 800; margin-bottom: 10px;
}
.region-card strong { display: block; font-size: 16px; color: var(--dark); margin-bottom: 6px; font-weight: 700; }
.region-price { display: block; font-size: 14px; color: var(--gray); margin-bottom: 8px; font-weight: 600; }
.region-change { display: inline-flex; align-items: center; gap: 3px; padding: 3px 8px; border-radius: 6px; font-size: 12px; font-weight: 700; }
.region-change.up { background: var(--crimson-soft); color: var(--crimson); }
.region-change.down { background: #EEF2FF; color: #6366F1; }
.region-change.flat { background: var(--gray-light); color: var(--gray); }

/* ===== STEPS ===== */
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; position: relative; }

/* Arrow connector between steps (desktop) */
.step-card { position: relative; }
.step-card:not(:last-child)::after {
	content: '\2192'; /* → */
	position: absolute; right: -16px; top: 50%; transform: translateY(-50%);
	font-size: 20px; color: var(--crimson-light); font-weight: 700; z-index: 1;
}

.step-card {
	padding: 40px 24px; background: var(--white);
	border: 1px solid var(--gray-light); border-radius: 20px;
	text-align: center; transition: transform 0.25s var(--ease), box-shadow 0.25s;
}
.step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.step-num { font-family: 'Inter', sans-serif; font-size: 11px; font-weight: 800; color: var(--crimson); letter-spacing: 0.12em; margin-bottom: 16px; }
.step-icon { font-size: 44px; color: var(--crimson); margin-bottom: 16px; }
.step-card h3 { font-size: 18px; margin-bottom: 10px; }
.step-card p { font-size: 14px; color: var(--gray-dark); margin: 0; line-height: 1.7; }

/* ===== ABOUT (실시세란?) ===== */
.about-section { background: var(--white); border-top: 1px solid var(--gray-light); border-bottom: 1px solid var(--gray-light); }
.about-content { max-width: 720px; margin: 0 auto; }
.about-content p { font-size: 16px; line-height: 2; color: var(--gray-dark); margin-bottom: 20px; }
.about-content p:last-child { margin-bottom: 0; }
.about-content strong { color: var(--dark); }

/* ===== TRUST BADGES ===== */
.trust-section { background: var(--crimson-soft); border-top: 1px solid var(--crimson-light); border-bottom: 1px solid var(--crimson-light); }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.trust-badge {
	display: flex; align-items: center; gap: 12px;
	padding: 22px 16px; background: var(--white);
	border-radius: 14px; border: 1px solid var(--crimson-light);
	transition: transform 0.2s, box-shadow 0.2s;
}
.trust-badge:hover { transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.trust-badge i { font-size: 28px; color: var(--crimson); flex-shrink: 0; }
.trust-badge span { font-size: 14px; font-weight: 700; color: var(--dark); letter-spacing: -0.02em; }

/* ===== FAQ ===== */
.faq-list { max-width: 700px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--gray-light); }
.faq-question {
	list-style: none; padding: 22px 0;
	font-size: 16px; font-weight: 700; color: var(--dark);
	cursor: pointer; display: flex; justify-content: space-between; align-items: center;
	letter-spacing: -0.02em;
}
.faq-question:hover { color: var(--crimson); }
.faq-question i { font-size: 16px; color: var(--crimson); transition: transform 0.3s; }
.faq-item[open] .faq-question i { transform: rotate(180deg); }
.faq-answer { padding: 0 0 22px; font-size: 15px; color: var(--gray-dark); line-height: 1.9; }

/* ===== CTA ===== */
.cta-section {
	background: var(--crimson-soft);
	background-image: radial-gradient(circle, rgba(232,54,78,0.06) 1px, transparent 1px);
	background-size: 24px 24px;
	border-top: 1px solid var(--crimson-light);
}
.cta-section h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); color: var(--dark); margin-bottom: 12px; }
.cta-section p { color: var(--gray-dark); font-size: 16px; margin-bottom: 32px; }
.subscribe-form { display: flex; gap: 10px; max-width: 500px; margin: 0 auto 12px; }
.input-group {
	flex: 1; display: flex; align-items: center;
	padding: 4px 16px; background: var(--white);
	border: 1.5px solid var(--border); border-radius: 12px; transition: border-color 0.2s;
}
.input-group:focus-within { border-color: var(--crimson); }
.input-group i { color: var(--crimson); font-size: 18px; margin-right: 8px; }
.input-group input { flex: 1; background: none; border: none; color: var(--dark); font-size: 15px; font-family: inherit; outline: none; padding: 12px 0; }
.input-group input::placeholder { color: var(--gray); }
.msg-box { min-height: 20px; font-size: 14px; font-weight: 600; margin-top: 6px; }
.msg-box.success { color: #059669; }
.msg-box.duplicate { color: #D97706; }
.msg-box.error { color: var(--crimson); }
.cta-sub { font-size: 13px; color: var(--gray) !important; margin-top: 8px !important; }

/* ===== FOOTER ===== */
.footer { background: var(--dark); color: rgba(255,255,255,0.6); padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.2fr 2.8fr; gap: 40px; padding-bottom: 40px; }
.footer .brand { color: #fff; margin-bottom: 12px; }
.footer .brand i { color: var(--crimson); }
.footer-info p { font-size: 14px; color: rgba(255,255,255,0.35); line-height: 1.6; }
.footer-links { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 24px; }
.link-column strong { display: block; color: #fff; font-size: 13px; font-weight: 700; margin-bottom: 14px; letter-spacing: -0.02em; }
.link-column a { display: block; font-size: 13px; color: rgba(255,255,255,0.35); margin-bottom: 8px; }
.link-column a:hover { color: var(--crimson); }
.copyright { border-top: 1px solid rgba(255,255,255,0.06); padding: 20px 0; }
.copyright p { font-size: 13px; color: rgba(255,255,255,0.25); margin: 0; }
.copyright-sub { margin-top: 4px !important; font-size: 12px !important; }

/* ===== SCROLL TOP ===== */
.scroll-top {
	position: fixed; bottom: 28px; right: 28px;
	width: 44px; height: 44px; background: var(--crimson);
	color: #fff; border-radius: 12px;
	display: flex; align-items: center; justify-content: center;
	font-size: 18px; box-shadow: 0 4px 12px rgba(232,54,78,0.3);
	opacity: 0; pointer-events: none; transition: 0.3s; z-index: 999;
}
.scroll-top.visible { opacity: 1; pointer-events: all; }
.scroll-top:hover { background: var(--crimson-dark); transform: translateY(-2px); }

/* ===== SCROLL REVEAL ===== */
.fade-up {
	opacity: 0; transform: translateY(20px);
	transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
	will-change: transform, opacity;
}
.fade-up.is-visible { opacity: 1; transform: translateY(0); }
.delay-1 { transition-delay: 0.08s; }
.delay-2 { transition-delay: 0.16s; }
.delay-3 { transition-delay: 0.24s; }

/* ===== RESPONSIVE ===== */
@media (max-width: 960px) {
	.nav-links { display: none; }
	.mobile-menu-btn { display: block; }
	.stats-grid { grid-template-columns: repeat(2, 1fr); }
	.stat-card:nth-child(2)::after { display: none; }
	.type-grid { grid-template-columns: 1fr 1fr; }
	.steps-grid { grid-template-columns: 1fr; gap: 16px; }
	.step-card:not(:last-child)::after { display: none; }
	.trust-grid { grid-template-columns: 1fr 1fr; }
	.footer-grid { grid-template-columns: 1fr; }
	.footer-links { grid-template-columns: 1fr 1fr 1fr; }
}

@media (max-width: 600px) {
	.hero { min-height: auto; padding: 100px 0 48px; }
	.hero h1 { font-size: 2.2rem; }
	.hero-desc { font-size: 0.95rem; margin-bottom: 28px; }
	.type-tabs { gap: 4px; }
	.type-tab { padding: 6px 10px; font-size: 12px; }
	.section { padding: 56px 0; }
	.stats-grid { grid-template-columns: 1fr 1fr; gap: 0; }
	.stat-card { padding: 28px 8px; }
	.stat-card::after { display: none; }
	.stat-num { font-size: 30px; }
	.type-grid { grid-template-columns: 1fr; }
	.section-header h2 { font-size: 1.5rem; }
	.subscribe-form { flex-direction: column; }
	.trust-grid { grid-template-columns: 1fr; }
	.region-card { flex: 0 0 180px; padding: 18px 14px; }
	.footer-links { grid-template-columns: 1fr 1fr; }
}