/**
 * Ivory design system — based on ivorydentalhome.ru reference.
 */

:root {
	--ivory-dark: #2e2e2e;
	--ivory-dark-deep: #1a1a1a;
	--ivory-light: #efefef;
	--ivory-white: #ffffff;
	--ivory-accent: #fa876b;
	--ivory-accent-hover: #ff8562;
	--ivory-text: #111111;
	--ivory-text-muted: #666666;
	--ivory-text-inverse: #ffffff;
	--ivory-radius: 16px;
	--ivory-radius-btn: 50px;
	--ivory-container: 1200px;
	--ivory-section-y: clamp(3.5rem, 8vw, 6.5rem);
	--ivory-font: 'Onest', system-ui, -apple-system, 'Segoe UI', sans-serif;
}

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

html {
	scroll-behavior: smooth;
}

body {
	margin: 0;
	font-family: var(--ivory-font);
	font-size: 1.125rem;
	line-height: 1.6;
	color: var(--ivory-text-inverse);
	background: var(--ivory-dark);
	-webkit-font-smoothing: antialiased;
}

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

a {
	color: var(--ivory-accent);
	text-decoration: none;
	transition: color 0.2s ease;
}

a:hover {
	color: var(--ivory-accent-hover);
}

.ivory-container {
	width: min(100% - 2rem, var(--ivory-container));
	margin-inline: auto;
}

/* Header */
.ivory-header {
	position: sticky;
	top: 0;
	z-index: 100;
	background: rgba(46, 46, 46, 0.92);
	backdrop-filter: blur(12px);
	border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.ivory-header__inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 1.5rem;
	padding: 1rem 0;
}

.ivory-logo {
	font-size: 1.25rem;
	font-weight: 600;
	color: var(--ivory-text-inverse);
	letter-spacing: 0.02em;
}

.ivory-nav {
	display: flex;
	flex-wrap: wrap;
	gap: 1.25rem;
	list-style: none;
	margin: 0;
	padding: 0;
}

.ivory-nav a {
	color: var(--ivory-text-inverse);
	font-size: 0.95rem;
}

.ivory-nav a:hover {
	color: var(--ivory-accent);
}

.ivory-header__cta {
	flex-shrink: 0;
}

/* Buttons */
.ivory-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	padding: 0.85rem 1.75rem;
	border-radius: var(--ivory-radius-btn);
	background: var(--ivory-accent);
	color: var(--ivory-white) !important;
	font-weight: 500;
	font-size: 1rem;
	border: none;
	cursor: pointer;
	transition: background 0.2s ease, transform 0.15s ease;
}

.ivory-btn:hover {
	background: var(--ivory-accent-hover);
	color: var(--ivory-white) !important;
	transform: translateY(-1px);
}

.ivory-btn--outline {
	background: transparent;
	border: 1px solid rgba(255, 255, 255, 0.35);
	color: var(--ivory-text-inverse) !important;
}

.ivory-btn--outline:hover {
	border-color: var(--ivory-accent);
	color: var(--ivory-accent) !important;
	background: transparent;
}

/* Sections */
.ivory-section {
	padding-block: var(--ivory-section-y);
}

.ivory-section--dark {
	background: var(--ivory-dark);
	color: var(--ivory-text-inverse);
}

.ivory-section--light {
	background: var(--ivory-light);
	color: var(--ivory-text);
}

.ivory-section--deep {
	background: var(--ivory-dark-deep);
	color: var(--ivory-text-inverse);
}

.ivory-section__title {
	margin: 0 0 1rem;
	font-size: clamp(1.75rem, 4vw, 2.75rem);
	font-weight: 500;
	line-height: 1.15;
}

.ivory-section__subtitle {
	margin: 0 0 2rem;
	font-size: 1.125rem;
	color: inherit;
	opacity: 0.85;
	max-width: 52ch;
}

.ivory-section--light .ivory-section__subtitle {
	color: var(--ivory-text-muted);
	opacity: 1;
}

/* Hero */
.ivory-hero {
	position: relative;
	min-height: clamp(420px, 70vh, 720px);
	display: flex;
	align-items: flex-end;
	padding-block: var(--ivory-section-y);
	overflow: hidden;
}

.ivory-hero__bg {
	position: absolute;
	inset: 0;
	background: var(--ivory-dark-deep) center / cover no-repeat;
}

.ivory-hero__overlay {
	position: absolute;
	inset: 0;
	background: linear-gradient(180deg, rgba(26, 26, 26, 0.35) 0%, rgba(26, 26, 26, 0.85) 100%);
}

.ivory-hero__content {
	position: relative;
	z-index: 1;
	max-width: 720px;
}

.ivory-hero__title {
	margin: 0 0 1rem;
	font-size: clamp(2rem, 5vw, 3.25rem);
	font-weight: 500;
	line-height: 1.1;
}

.ivory-hero__text {
	margin: 0 0 2rem;
	font-size: 1.25rem;
	opacity: 0.9;
}

/* Cards grid */
.ivory-grid {
	display: grid;
	gap: 1.5rem;
}

.ivory-grid--2 {
	grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.ivory-grid--3 {
	grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.ivory-grid--4 {
	grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.ivory-card {
	background: rgba(255, 255, 255, 0.04);
	border: 1px solid rgba(255, 255, 255, 0.08);
	border-radius: var(--ivory-radius);
	padding: 1.5rem;
	transition: border-color 0.2s ease, transform 0.2s ease;
}

.ivory-section--light .ivory-card {
	background: var(--ivory-white);
	border-color: rgba(0, 0, 0, 0.06);
	box-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
}

.ivory-card:hover {
	border-color: rgba(250, 135, 107, 0.4);
	transform: translateY(-2px);
}

.ivory-card__image {
	border-radius: calc(var(--ivory-radius) - 4px);
	margin-bottom: 1rem;
	aspect-ratio: 4 / 3;
	object-fit: cover;
	width: 100%;
}

.ivory-card__title {
	margin: 0 0 0.5rem;
	font-size: 1.25rem;
	font-weight: 500;
}

.ivory-card__text {
	margin: 0 0 1.25rem;
	font-size: 1rem;
	opacity: 0.85;
}

.ivory-card__actions {
	display: flex;
	flex-wrap: wrap;
	gap: 0.75rem;
}

/* USP split */
.ivory-split {
	display: grid;
	gap: 2rem;
	align-items: center;
}

@media (min-width: 768px) {
	.ivory-split {
		grid-template-columns: 1fr 1fr;
	}

	.ivory-split--reverse .ivory-split__media {
		order: 2;
	}
}

.ivory-split__media img {
	border-radius: var(--ivory-radius);
	width: 100%;
}

/* Form block */
.ivory-form {
	display: grid;
	gap: 1rem;
	max-width: 480px;
}

.ivory-form__field {
	display: flex;
	flex-direction: column;
	gap: 0.35rem;
}

.ivory-form__label {
	font-size: 0.9rem;
	opacity: 0.8;
}

.ivory-form__input {
	padding: 0.9rem 1rem;
	border-radius: 12px;
	border: 1px solid rgba(255, 255, 255, 0.15);
	background: rgba(255, 255, 255, 0.06);
	color: inherit;
	font: inherit;
}

.ivory-section--light .ivory-form__input {
	background: var(--ivory-white);
	border-color: rgba(0, 0, 0, 0.12);
	color: var(--ivory-text);
}

.ivory-form__checkbox {
	display: flex;
	gap: 0.5rem;
	align-items: flex-start;
	font-size: 0.85rem;
	opacity: 0.85;
}

/* Doctors */
.ivory-doctor {
	text-align: center;
}

.ivory-doctor__photo {
	border-radius: var(--ivory-radius);
	margin-bottom: 1rem;
	aspect-ratio: 4 / 5;
	object-fit: cover;
	width: 100%;
}

.ivory-doctor--featured {
	text-align: left;
}

@media (min-width: 768px) {
	.ivory-doctor--featured {
		display: grid;
		grid-template-columns: 280px 1fr;
		gap: 2rem;
		align-items: start;
	}
}

/* Reviews */
.ivory-reviews {
	display: flex;
	flex-wrap: wrap;
	gap: 1rem;
}

.ivory-review-badge {
	display: flex;
	flex-direction: column;
	gap: 0.25rem;
	padding: 1.25rem 1.5rem;
	border-radius: var(--ivory-radius);
	background: rgba(255, 255, 255, 0.06);
	border: 1px solid rgba(255, 255, 255, 0.1);
	min-width: 140px;
}

.ivory-section--light .ivory-review-badge {
	background: var(--ivory-white);
	border-color: rgba(0, 0, 0, 0.08);
}

.ivory-review-badge__score {
	font-size: 2rem;
	font-weight: 600;
	color: var(--ivory-accent);
}

/* Footer */
.ivory-footer {
	background: var(--ivory-dark-deep);
	padding-block: 3rem 2rem;
	font-size: 0.95rem;
}

.ivory-footer__grid {
	display: grid;
	gap: 2rem;
}

@media (min-width: 768px) {
	.ivory-footer__grid {
		grid-template-columns: 2fr 1fr 1fr;
	}
}

.ivory-footer__bottom {
	margin-top: 2rem;
	padding-top: 1.5rem;
	border-top: 1px solid rgba(255, 255, 255, 0.1);
	font-size: 0.85rem;
	opacity: 0.7;
}

/* Mobile nav toggle */
.ivory-menu-toggle {
	display: none;
	background: none;
	border: none;
	color: var(--ivory-text-inverse);
	font-size: 1.5rem;
	cursor: pointer;
}

@media (max-width: 767px) {
	.ivory-menu-toggle {
		display: block;
	}

	.ivory-nav {
		display: none;
		position: absolute;
		top: 100%;
		left: 0;
		right: 0;
		flex-direction: column;
		background: var(--ivory-dark);
		padding: 1rem;
		border-bottom: 1px solid rgba(255, 255, 255, 0.08);
	}

	.ivory-nav.is-open {
		display: flex;
	}

	.ivory-header__inner {
		position: relative;
		flex-wrap: wrap;
	}
}

/* Demo badge */
.ivory-demo-badge {
	position: fixed;
	bottom: 1rem;
	right: 1rem;
	z-index: 200;
	padding: 0.5rem 0.85rem;
	border-radius: 8px;
	background: var(--ivory-accent);
	color: var(--ivory-white);
	font-size: 0.75rem;
	font-weight: 500;
}