/* ==========================================================================
   LionStepCare — Core design system
   Tokens, reset, typography, layout primitives, utilities
   ========================================================================== */

/* ---------- Design tokens ---------- */
:root {
  /* Brand colour system — warm orange primary, warm sand, muted gold */
  --color-primary: #E2660B;
  --color-primary-dark: #BE510A;
  --color-primary-darker: #97400A;
  --color-primary-light: #FCEAD8;
  --color-primary-mid: #F7D8B8;

  --color-secondary: #efe7d6;
  --color-secondary-dark: #e3d7bd;

  --color-accent: #c8912f;
  --color-accent-dark: #a5761f;
  --color-accent-light: #f7ecd6;

  --color-bg: #fbf9f4;
  --color-surface: #ffffff;
  --color-surface-alt: #f4f1e9;

  --color-text: #23272a;
  --color-text-muted: #566064;
  --color-text-soft: #7a8286;
  --color-heading: #17201f;

  --color-border: #e6e1d6;
  --color-border-strong: #d3ccbc;

  --color-success: #2f7a4f;
  --color-error: #a53e2e;

  /* Radii */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-pill: 999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(23, 32, 31, 0.06), 0 1px 3px rgba(23, 32, 31, 0.05);
  --shadow-md: 0 6px 18px rgba(23, 32, 31, 0.08);
  --shadow-lg: 0 18px 45px rgba(23, 32, 31, 0.12);

  /* Layout */
  --container-width: 1180px;
  --container-pad: 22px;
  --header-height: 85px;

  /* Spacing scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;

  /* Type scale */
  --font-sans: "Inter", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --fs-caption: 0.8125rem;
  --fs-sm: 0.9375rem;
  --fs-base: 1.0625rem;
  --fs-md: 1.1875rem;
  --fs-lg: 1.45rem;
  --fs-xl: 1.85rem;
  --fs-2xl: 2.4rem;
  --fs-3xl: 3.1rem;
  --fs-hero: clamp(2.35rem, 5.2vw, 3.9rem);

  /* Motion */
  --transition: 220ms cubic-bezier(0.4, 0, 0.2, 1);
  --focus-ring: 3px solid rgba(200, 145, 47, 0.55);
}

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

* {
  margin: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 16px);
}

body {
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: 1.65;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover {
  color: var(--color-primary-dark);
}

ul,
ol {
  padding: 0;
  list-style: none;
}

h1,
h2,
h3,
h4 {
  color: var(--color-heading);
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.01em;
}

/* ---------- Typography helpers ---------- */
.h-hero {
  font-size: var(--fs-hero);
  line-height: 1.06;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.h1 {
  font-size: var(--fs-3xl);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.h2 {
  font-size: var(--fs-2xl);
  font-weight: 800;
}

.h3 {
  font-size: var(--fs-xl);
  font-weight: 700;
}

.h4 {
  font-size: var(--fs-lg);
  font-weight: 700;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--fs-caption);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent-dark);
}

.lead {
  font-size: var(--fs-md);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.text-muted {
  color: var(--color-text-muted);
}

/* ---------- Layout primitives ---------- */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.container--narrow {
  max-width: 820px;
}

.section {
  padding-block: clamp(56px, 8vw, 96px);
}

.section--tight {
  padding-block: clamp(40px, 5vw, 64px);
}

.section--alt {
  background-color: var(--color-surface-alt);
}

.section--sand {
  background-color: var(--color-secondary);
}

.section--brand {
  background-color: var(--color-primary);
  color: #eef4f2;
}

.section--brand h2,
.section--brand h3 {
  color: #ffffff;
}

.section-head {
  max-width: 640px;
  margin-bottom: var(--space-7);
}

.section-head--center {
  margin-inline: auto;
  text-align: center;
}

.section-head .h2 {
  margin-top: 10px;
  margin-bottom: 14px;
}

.main {
  flex: 1 1 auto;
}

/* ---------- Grid ---------- */
.grid {
  display: grid;
  gap: var(--space-5);
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.stack > * + * {
  margin-top: var(--space-4);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 26px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: var(--fs-sm);
  line-height: 1;
  white-space: nowrap;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform var(--transition), background-color var(--transition),
    color var(--transition), border-color var(--transition), box-shadow var(--transition);
  text-align: center;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background-color: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  color: #fff;
  box-shadow: var(--shadow-md);
}

.btn-accent {
  background-color: var(--color-accent);
  color: #291d02;
}

.btn-accent:hover {
  background-color: var(--color-accent-dark);
  color: #fff;
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-secondary:hover {
  background-color: var(--color-primary);
  color: #fff;
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-text);
  border-color: var(--color-border-strong);
}

.btn-ghost:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-light {
  background-color: #fff;
  color: var(--color-primary);
}

.btn-light:hover {
  background-color: var(--color-primary-light);
  color: var(--color-primary-dark);
}

.btn-lg {
  padding: 17px 34px;
  font-size: var(--fs-base);
}

.btn-block {
  width: 100%;
}

/* Text link with arrow */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  color: var(--color-primary);
}

.link-arrow svg {
  transition: transform var(--transition);
}

.link-arrow:hover svg {
  transform: translateX(4px);
}

/* ---------- Utility ---------- */
.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;
}

.center {
  text-align: center;
}

.divider {
  height: 1px;
  background: var(--color-border);
  border: 0;
  margin-block: var(--space-6);
}

/* Skip link (accessibility) */
.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 200;
  background: var(--color-primary);
  color: #fff;
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  transition: top var(--transition);
}

.skip-link:focus {
  top: 12px;
  color: #fff;
}

/* Reveal on scroll — only hides when JS is present, so content is never
   stuck invisible if scripting is disabled or a script fails. */
.reveal {
  opacity: 1;
}

html.js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 600ms ease, transform 600ms ease;
}

html.js .reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .reveal,
  html.js .reveal {
    opacity: 1;
    transform: none;
  }
}

/* Focus visibility */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
  outline: var(--focus-ring);
  outline-offset: 2px;
  border-radius: 4px;
}