/* ==========================================================================
   Base — variables, reset, utilities
   ========================================================================== */

: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 0.5em;
}

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;
	cursor: pointer;
	transition: background var(--transition), color var(--transition), border-color var(--transition);
	white-space: nowrap;
}

::placeholder {
	color: #666;
	opacity: 1;
}

.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;
}