/* ==========================================================================
   Ariawell Theme — Base & Front Page
   Design ref: IEL (iel.ariawell.co.kr) — clean, professional, Pretendard
   ========================================================================== */

:root {
	--color-text: #1a1a1a;
	--color-text-secondary: #333333;
	--color-text-muted: #666666;
	--color-border: #333333;
	--color-border-light: #999999;
	--color-bg: #ffffff;
	--color-bg-subtle: #f9f9f9;
	--color-bg-hero: #0f1a2e;
	--color-accent: #1e3a5f;
	--color-white: #ffffff;
	--font-sans: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
	--container-max: 1400px;
	--header-height: 112px;
	--radius-lg: 24px;
	--radius-sm: 6px;
	--transition: 0.25s ease;
}

*,
*::before,
*::after {
	box-sizing: border-box;
}

html {
	scroll-behavior: smooth;
}

body {
	margin: 0;
	font-family: var(--font-sans);
	font-size: 16px;
	line-height: 1.6;
	color: var(--color-text);
	background: var(--color-bg);
	-webkit-font-smoothing: antialiased;
}

img {
	max-width: 100%;
	height: auto;
	display: block;
}

a {
	color: inherit;
	text-decoration: none;
}

p {
	margin: 0 0 1em;
}

p:last-child {
	margin-bottom: 0;
}

.screen-reader-text {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	border: 0;
}

.container {
	width: 100%;
	max-width: var(--container-max);
	margin: 0 auto;
	padding: 0 20px;
}

/* Buttons
   -------------------------------------------------------------------------- */

.btn {
	display: inline-flex;
	align-items: center;
	justify-content: space-between;
	gap: 12px;
	border-radius: var(--radius-sm);
	font-weight: 500;
	line-height: 1.4;
	letter-spacing: -0.01em;
	transition: background var(--transition), color var(--transition), border-color var(--transition);
	white-space: nowrap;
}

.btn--lg {
	padding: 16px 20px;
	font-size: 20px;
	border: 1px solid var(--color-border);
	color: var(--color-text-secondary);
	background: transparent;
}

.btn--lg:hover {
	background: var(--color-text);
	color: var(--color-white);
	border-color: var(--color-text);
}

.btn--sm {
	padding: 12px 16px;
	font-size: 16px;
	border: 1px solid var(--color-border);
	color: var(--color-text-secondary);
	background: transparent;
}

.btn--sm:hover {
	background: var(--color-text);
	color: var(--color-white);
	border-color: var(--color-text);
}

.btn--primary {
	border-color: rgba(255, 255, 255, 0.6);
	color: var(--color-white);
}

.btn--primary:hover {
	background: var(--color-white);
	color: var(--color-bg-hero);
	border-color: var(--color-white);
}

.btn__icon {
	flex-shrink: 0;
}

/* Media placeholder
   -------------------------------------------------------------------------- */

.media-placeholder {
	background: linear-gradient(135deg, #e8ecf1 0%, #d4dbe6 50%, #c5ced9 100%);
	border-radius: var(--radius-lg);
	position: relative;
	overflow: hidden;
}

.media-placeholder::after {
	content: '';
	position: absolute;
	inset: 0;
	background: radial-gradient(circle at 30% 40%, rgba(255, 255, 255, 0.35) 0%, transparent 60%);
}

.media-placeholder--tall {
	aspect-ratio: 637 / 635;
}

.media-placeholder--full {
	border-radius: 0;
	height: 100%;
	min-height: 500px;
}

/* Header
   -------------------------------------------------------------------------- */

.site-header {
	position: fixed;
	top: 0;
	left: 0;
	right: 0;
	z-index: 100;
	height: var(--header-height);
	background: transparent;
	border-bottom: 1px solid transparent;
	transition: background var(--transition), border-color var(--transition);
}

.site-header.is-scrolled,
body:not(.home) .site-header {
	background-color: #fff;
	border-bottom-color: rgba(0, 0, 0, 0.06);
}

.site-header__inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	max-width: var(--container-max);
	height: 100%;
	margin: 0 auto;
	padding: 0 20px;
}

.site-header__logo-text,
.site-footer__logo-text {
	font-size: clamp(24px, 3vw, 40px);
	font-weight: 700;
	letter-spacing: -0.01em;
	color: var(--color-text);
	transition: color var(--transition);
}

.site-header.is-scrolled .site-header__logo-text,
body:not(.home) .site-header .site-header__logo-text {
	color: #1a1a1a;
}

body.home .site-header:not(.is-scrolled) .site-header__logo-text {
	color: #fff;
}

.site-header__logo img,
.site-footer__logo img {
	max-height: 48px;
	width: auto;
	transition: filter var(--transition);
}

body.home .site-header:not(.is-scrolled) .site-header__logo img {
	filter: brightness(0) invert(1);
}

.site-header__menu {
	display: flex;
	align-items: center;
	gap: 32px;
	margin: 0;
	padding: 0;
	list-style: none;
}

.site-header__menu a {
	font-size: 20px;
	font-weight: 600;
	letter-spacing: -0.01em;
	color: #1a1a1a;
	padding: 10px;
	transition: color var(--transition);
}

.site-header.is-scrolled .site-header__menu a,
body:not(.home) .site-header .site-header__menu a {
	color: #1a1a1a;
}

body.home .site-header:not(.is-scrolled) .site-header__menu a {
	color: #fff;
}

.site-header__menu a:hover {
	color: var(--color-accent);
}

body.home .site-header:not(.is-scrolled) .site-header__menu a:hover {
	color: rgba(255, 255, 255, 0.75);
}

.site-header__toggle {
	display: none;
	flex-direction: column;
	justify-content: center;
	gap: 5px;
	width: 40px;
	height: 40px;
	padding: 0;
	border: none;
	background: transparent;
	cursor: pointer;
}

.site-header__toggle-bar {
	display: block;
	width: 24px;
	height: 2px;
	background: #1a1a1a;
	transition: transform var(--transition), opacity var(--transition), background var(--transition);
}

.site-header.is-scrolled .site-header__toggle-bar,
body:not(.home) .site-header .site-header__toggle-bar {
	background: #1a1a1a;
}

body.home .site-header:not(.is-scrolled) .site-header__toggle-bar {
	background: #fff;
}

/* Hero
   -------------------------------------------------------------------------- */

.hero {
	position: relative;
	overflow: hidden;
	color: var(--color-white);
	padding: clamp(120px, 18vw, 260px) 0;
}

.hero__video {
	position: absolute;
	inset: 0;
	z-index: 0;
}

.hero__video-el {
	display: block;
	width: 100%;
	height: 100%;
	object-fit: cover;
	object-position: center bottom;
}

.hero__overlay {
	position: absolute;
	inset: 0;
	background: linear-gradient(135deg, rgb(0 0 0 / 72%) 0%, rgb(45 52 62 / 60%) 55%, rgb(49 66 119 / 65%) 100%)
}

.hero__inner {
	position: relative;
	z-index: 1;
	max-width: var(--container-max);
}

.hero__content {
	display: flex;
	flex-direction: column;
	gap: 16px;
	align-items: flex-start;
}

.hero__title {
	display: flex;
	flex-direction: column;
	margin: 0;
	font-size: clamp(32px, 4vw, 48px);
	font-weight: 700;
	line-height: 1.4;
	letter-spacing: -0.01em;
}

.hero__desc {
	margin: 0 0 42px;
	font-size: clamp(16px, 2vw, 20px);
	line-height: 1.6;
	letter-spacing: -0.01em;
	color: rgba(255, 255, 255, 0.85);
	max-width: 640px;
}

/* Services
   -------------------------------------------------------------------------- */

.services {
	padding: clamp(64px, 10vw, 114px) 0;
}

.services__grid {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: 64px;
}

.service-card {
	display: flex;
	flex-direction: column;
	gap: 24px;
}

.service-card__media {
	aspect-ratio: 668 / 400;
	border-radius: var(--radius-lg);
	overflow: hidden;
}

.service-card__media img {
	width: 100%;
	height: 100%;
	object-fit: cover;
}

.service-card__title {
	margin: 0 0 8px;
	font-size: clamp(24px, 3vw, 32px);
	font-weight: 700;
	line-height: 1.4;
	letter-spacing: -0.01em;
}

.service-card__desc {
	margin: 0 0 16px;
	font-size: 18px;
	font-weight: 500;
	line-height: 1.5em;
	letter-spacing: -0.01em;
	color: var(--color-text-secondary);
}

/* Features
   -------------------------------------------------------------------------- */

.features {
	background: var(--color-bg-subtle);
	padding: clamp(64px, 10vw, 114px) 0;
}

.features__inner {
	display: flex;
	flex-direction: column;
	gap: 64px;
}

.feature-row {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 64px;
	align-items: center;
}

.feature-row--reverse .feature-row__media {
	order: 2;
}

.feature-row--reverse .feature-row__content {
	order: 1;
}

.feature-row__media {
	border-radius: var(--radius-lg);
	overflow: hidden;
}

.feature-row__media img {
	display: block;
	width: 100%;
	height: auto;
	object-fit: cover;
}

.feature-row__title {
	margin: 0 0 20px;
	font-size: clamp(28px, 3vw, 36px);
	font-weight: 700;
	line-height: 1.4;
	letter-spacing: -0.01em;
}

.feature-row__desc {
	font-size: 20px;
	font-weight: 500;
	line-height: 1.6;
	letter-spacing: -0.01em;
	color: var(--color-text-secondary);
}

.feature-row__desc p {
	margin-bottom: 0.5em;
}

/* CEO Message
   -------------------------------------------------------------------------- */

.ceo-message {
	overflow: hidden;
}

.ceo-message__inner {
	display: grid;
	grid-template-columns: minmax(320px, 47%) 1fr;
	min-height: 771px;
}

.ceo-message__media {
	min-height: 500px;
	overflow: hidden;
}

.ceo-message__media img {
	display: block;
	width: 100%;
	height: 100%;
	object-fit: cover;
}

.ceo-message__content {
	display: flex;
	flex-direction: column;
	justify-content: center;
	gap: 8px;
	padding: clamp(48px, 8vw, 80px) clamp(32px, 6vw, 80px);
}

.ceo-message__title {
	margin: 0 0 24px;
	font-size: clamp(32px, 4vw, 48px);
	font-weight: 700;
	line-height: 1.4;
	letter-spacing: -0.01em;
}

.ceo-message__text {
	max-width: 698px;
	font-size: 20px;
	font-weight: 500;
	line-height: 1.6;
	letter-spacing: -0.01em;
	color: var(--color-text-secondary);
}

.ceo-message__text p + p {
	margin-top: 1.2em;
}

/* Location
   -------------------------------------------------------------------------- */

.location {
	padding: clamp(64px, 10vw, 114px) 0;
}

.location__card {
	display: flex;
	flex-direction: column;
	gap: 24px;
	width: 100%;
}

.location__map {
	width: 100%;
	height: 450px;
	border-radius: var(--radius-lg);
	overflow: hidden;
}

.location__map iframe {
	display: block;
	width: 100%;
	height: 100%;
	border: 0;
}

.location__title {
	margin: 0 0 12px;
	font-size: clamp(24px, 3vw, 32px);
	font-weight: 700;
	line-height: 1.4;
	letter-spacing: -0.01em;
}

.location__address {
	margin-bottom: 8px;
	font-size: 20px;
	font-weight: 500;
	line-height: 1.4;
	letter-spacing: -0.01em;
	color: var(--color-text-secondary);
}

/* Footer
   -------------------------------------------------------------------------- */

.site-footer {
	border-top: 0.5px solid var(--color-border-light);
	padding: 50px 20px;
}

.site-footer__inner {
	display: flex;
	align-items: flex-end;
	justify-content: space-between;
	gap: 48px;
	max-width: var(--container-max);
	margin: 0 auto;
}

.site-footer__brand {
	display: flex;
	flex-direction: column;
	justify-content: space-between;
	gap: 30px;
	min-height: 260px;
	max-width: 518px;
}

.site-footer__info {
	font-size: 16px;
	font-weight: 500;
	line-height: 2;
	color: var(--color-text-secondary);
}

.site-footer__copyright {
	margin-top: 30px;
	font-size: 15px;
	line-height: 1.4;
	letter-spacing: -0.01em;
	color: var(--color-text-muted);
}

.site-footer__legal {
	display: flex;
	gap: 30px;
	font-size: 15px;
	font-weight: 500;
	line-height: 1.4;
	letter-spacing: -0.01em;
}

.site-footer__legal a {
	transition: color var(--transition);
}

.site-footer__legal a:hover {
	color: var(--color-accent);
}

/* Responsive
   -------------------------------------------------------------------------- */

@media (max-width: 1024px) {
	.services__grid,
	.feature-row {
		grid-template-columns: 1fr;
		gap: 40px;
	}

	.feature-row--reverse .feature-row__media,
	.feature-row--reverse .feature-row__content {
		order: unset;
	}

	.ceo-message__inner {
		grid-template-columns: 1fr;
		min-height: auto;
	}

	.ceo-message__media {
		min-height: 360px;
	}

	.site-footer__inner {
		flex-direction: column;
		align-items: flex-start;
	}
}

@media (max-width: 768px) {
	.site-header__toggle {
		display: flex;
	}

	.site-header__nav {
		position: fixed;
		top: var(--header-height);
		left: 0;
		right: 0;
		background: var(--color-white);
		border-bottom: 1px solid rgba(0, 0, 0, 0.08);
		padding: 16px 20px;
		transform: translateY(-120%);
		opacity: 0;
		pointer-events: none;
		transition: transform var(--transition), opacity var(--transition);
	}

	.site-header.is-open .site-header__nav {
		transform: translateY(0);
		opacity: 1;
		pointer-events: auto;
	}

	.site-header.is-open .site-header__toggle-bar:nth-child(1) {
		transform: translateY(7px) rotate(45deg);
	}

	.site-header.is-open .site-header__toggle-bar:nth-child(2) {
		opacity: 0;
	}

	.site-header.is-open .site-header__toggle-bar:nth-child(3) {
		transform: translateY(-7px) rotate(-45deg);
	}

	.site-header__menu {
		flex-direction: column;
		align-items: flex-start;
		gap: 8px;
	}

	.site-header__menu a {
		font-size: 18px;
	}

	.site-header.is-open .site-header__menu a {
		color: #1a1a1a;
	}

	.hero__content {
		gap: 40px;
	}
}