/* ==========================================================================
   Kairós Livraria — base.css
   Design system: tokens, tipografia, reset leve e utilitários .kairos-*
   Mantenha enxuto. Componentes ficam em components.css.
   ========================================================================== */

/* --- Fonte (self-host, sem chamada externa) ------------------------------ */
@font-face {
	font-family: "Inter";
	font-style: normal;
	font-weight: 100 900;
	font-display: swap;
	src: url("../fonts/Inter-Variable.woff2") format("woff2-variations");
}

/* ==========================================================================
   1. TOKENS
   ========================================================================== */
:root {
	/* Cores */
	--k-white: #ffffff;
	--k-white-soft: #fafaf7;
	--k-ink: #111111;
	--k-ink-soft: #5f5f5f;
	--k-line: rgba(17, 17, 17, 0.08);
	--k-line-strong: rgba(17, 17, 17, 0.14);

	--k-orange: #f97316;
	--k-orange-dark: #c2410c;
	--k-orange-soft: rgba(249, 115, 22, 0.12);
	--k-orange-tint: #fef1e7;

	/* Glassmorphism */
	--k-glass: rgba(255, 255, 255, 0.72);
	--k-glass-strong: rgba(255, 255, 255, 0.85);
	--k-glass-blur: 18px;
	--k-glass-border: rgba(255, 255, 255, 0.6);

	/* Sombras */
	--k-shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.04);
	--k-shadow-md: 0 10px 30px rgba(0, 0, 0, 0.06);
	--k-shadow-premium: 0 18px 60px rgba(0, 0, 0, 0.08);

	/* Tipografia */
	--k-font: "Inter", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
	--k-fs-display: clamp(2.5rem, 1.5rem + 4vw, 4rem);
	--k-fs-h1: clamp(2rem, 1.3rem + 3vw, 3.25rem);
	--k-fs-h2: clamp(1.6rem, 1.2rem + 2vw, 2.4rem);
	--k-fs-h3: clamp(1.25rem, 1rem + 1.2vw, 1.6rem);
	--k-fs-body: 1rem;
	--k-fs-sm: 0.875rem;
	--k-fs-xs: 0.75rem;
	--k-leading: 1.65;
	--k-leading-tight: 1.15;
	--k-tracking-tight: -0.02em;

	/* Espaçamentos (escala) */
	--k-sp-1: 0.5rem;
	--k-sp-2: 1rem;
	--k-sp-3: 1.5rem;
	--k-sp-4: 2.5rem;
	--k-sp-5: 4rem;
	--k-sp-6: 6rem;

	/* Raios */
	--k-radius-sm: 10px;
	--k-radius: 16px;
	--k-radius-lg: 24px;
	--k-radius-pill: 999px;

	/* Transições */
	--k-ease: cubic-bezier(0.22, 1, 0.36, 1);
	--k-dur: 0.32s;
	--k-dur-fast: 0.18s;

	/* Layout */
	--k-container: 1200px;
	--k-container-narrow: 760px;
	--k-gutter: clamp(1rem, 4vw, 2.5rem);
}

/* Breakpoints de referência (uso em media queries):
   sm 480px · md 768px · lg 1024px · xl 1200px  */

/* ==========================================================================
   2. RESET LEVE / BASE
   ========================================================================== */
.kairos-theme {
	background-color: var(--k-white);
	color: var(--k-ink);
	font-family: var(--k-font);
	font-size: var(--k-fs-body);
	line-height: var(--k-leading);
	-webkit-font-smoothing: antialiased;
	text-rendering: optimizeLegibility;
}

.kairos-theme h1,
.kairos-theme h2,
.kairos-theme h3,
.kairos-theme h4 {
	font-weight: 700;
	line-height: var(--k-leading-tight);
	letter-spacing: var(--k-tracking-tight);
	color: var(--k-ink);
}

.kairos-theme a {
	color: var(--k-orange-dark);
	text-decoration-thickness: 1px;
	text-underline-offset: 2px;
	transition: color var(--k-dur-fast) var(--k-ease);
}
.kairos-theme a:hover { color: var(--k-orange); }

.kairos-theme img { max-width: 100%; height: auto; }

/* Foco visível e acessível em toda interação por teclado */
.kairos-theme :focus-visible {
	outline: 2px solid var(--k-orange);
	outline-offset: 2px;
	border-radius: 4px;
}

/* ==========================================================================
   3. UTILITÁRIOS .kairos-*
   ========================================================================== */

.kairos-container {
	width: 100%;
	max-width: var(--k-container);
	margin-inline: auto;
	padding-inline: var(--k-gutter);
}

.kairos-section {
	padding-block: clamp(var(--k-sp-4), 6vw, var(--k-sp-6));
}
.kairos-section--tight { padding-block: var(--k-sp-4); }
.kairos-section--soft { background: var(--k-white-soft); }

/* Glassmorphism reutilizável */
.kairos-glass {
	background: var(--k-glass);
	-webkit-backdrop-filter: blur(var(--k-glass-blur));
	backdrop-filter: blur(var(--k-glass-blur));
	border: 1px solid var(--k-glass-border);
	box-shadow: var(--k-shadow-premium);
	border-radius: var(--k-radius-lg);
}
/* Fallback p/ navegadores sem backdrop-filter: fundo sólido */
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
	.kairos-glass { background: var(--k-glass-strong); }
}

/* Botões */
.kairos-button-primary,
.kairos-button-secondary {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 0.5rem;
	min-height: 48px;
	padding: 0.75rem 1.5rem;
	border-radius: var(--k-radius-pill);
	font-weight: 600;
	font-size: var(--k-fs-body);
	line-height: 1;
	text-decoration: none;
	cursor: pointer;
	transition: transform var(--k-dur-fast) var(--k-ease),
		background-color var(--k-dur-fast) var(--k-ease),
		box-shadow var(--k-dur-fast) var(--k-ease);
}
.kairos-button-primary {
	background: var(--k-orange);
	color: #fff;
	border: 1px solid var(--k-orange);
	box-shadow: 0 8px 22px rgba(249, 115, 22, 0.28);
}
.kairos-button-primary:hover {
	background: var(--k-orange-dark);
	border-color: var(--k-orange-dark);
	color: #fff;
	transform: translateY(-1px);
}
.kairos-button-secondary {
	background: transparent;
	color: var(--k-ink);
	border: 1px solid var(--k-line-strong);
}
.kairos-button-secondary:hover {
	border-color: var(--k-ink);
	background: var(--k-white-soft);
	transform: translateY(-1px);
}

/* Cards */
.kairos-card {
	background: var(--k-white);
	border: 1px solid var(--k-line);
	border-radius: var(--k-radius);
	box-shadow: var(--k-shadow-sm);
	transition: transform var(--k-dur) var(--k-ease), box-shadow var(--k-dur) var(--k-ease);
}
.kairos-card:hover {
	transform: translateY(-4px);
	box-shadow: var(--k-shadow-md);
}

/* Card de produto (variante de glass leve) */
.kairos-product-card {
	background: var(--k-glass-strong);
	-webkit-backdrop-filter: blur(10px);
	backdrop-filter: blur(10px);
	border: 1px solid var(--k-line);
	border-radius: var(--k-radius);
	box-shadow: var(--k-shadow-sm);
	overflow: hidden;
	transition: transform var(--k-dur) var(--k-ease), box-shadow var(--k-dur) var(--k-ease);
}
.kairos-product-card:hover {
	transform: translateY(-4px);
	box-shadow: var(--k-shadow-premium);
}

/* Barra de confiança */
.kairos-trust-bar {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: var(--k-sp-2);
	padding: var(--k-sp-3);
}
@media (min-width: 768px) {
	.kairos-trust-bar { grid-template-columns: repeat(4, 1fr); }
}

/* Hero */
.kairos-hero {
	position: relative;
	display: grid;
	gap: var(--k-sp-4);
	align-items: center;
	padding-block: clamp(var(--k-sp-4), 7vw, var(--k-sp-6));
}
@media (min-width: 1024px) {
	.kairos-hero { grid-template-columns: 1.05fr 0.95fr; }
}

/* Badge */
.kairos-badge {
	display: inline-flex;
	align-items: center;
	gap: 0.35rem;
	padding: 0.3rem 0.7rem;
	font-size: var(--k-fs-xs);
	font-weight: 600;
	letter-spacing: 0.02em;
	text-transform: uppercase;
	color: var(--k-orange-dark);
	background: var(--k-orange-soft);
	border-radius: var(--k-radius-pill);
}

/* Texto auxiliar e ênfases */
.kairos-muted { color: var(--k-ink-soft); }
.kairos-orange-text { color: var(--k-orange); }
.kairos-eyebrow {
	font-size: var(--k-fs-sm);
	font-weight: 600;
	letter-spacing: 0.08em;
	text-transform: uppercase;
	color: var(--k-orange-dark);
}

/* Acessibilidade: esconder visualmente mantendo p/ leitores de tela */
.kairos-visually-hidden {
	position: absolute !important;
	width: 1px; height: 1px;
	padding: 0; margin: -1px;
	overflow: hidden; clip: rect(0, 0, 0, 0);
	white-space: nowrap; border: 0;
}