/* ============================================================
   Stoneward — landing page styles
   ============================================================ */

:root {
  --color-bg: #F5F3EF;
  --color-surface: #FFFFFF;
  --color-primary: #334155;
  --color-text: #1F2933;
  --color-accent: #D97706;
  --color-muted: #6B7280;
  --color-border: #D7D3CA;

  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --maxw: 64rem;
  --gutter: clamp(1.25rem, 4vw, 2.5rem);
  --radius: 6px;

  --space-section: clamp(4rem, 9vw, 7.5rem);

  color-scheme: light;
}

/* Dark theme — follows the system preference by default; can be
   overridden explicitly via the toggle (adds data-theme on <html>). */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-bg: #14161A;
    --color-surface: #1C2027;
    --color-primary: #E6E8EC;
    --color-text: #D4D8DE;
    --color-accent: #F0A33C;
    --color-muted: #98A0AC;
    --color-border: #2C313A;

    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --color-bg: #14161A;
  --color-surface: #1C2027;
  --color-primary: #E6E8EC;
  --color-text: #D4D8DE;
  --color-accent: #F0A33C;
  --color-muted: #98A0AC;
  --color-border: #2C313A;

  color-scheme: dark;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, p {
  margin: 0;
}

a {
  color: inherit;
}

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

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

/* ----- Accessibility ----- */
.skip-link {
  position: absolute;
  left: 0.75rem;
  top: -3rem;
  z-index: 100;
  background: var(--color-surface);
  color: var(--color-primary);
  padding: 0.6rem 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  text-decoration: none;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 0.75rem;
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 3px;
}

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

/* ----- Header ----- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: color-mix(in srgb, var(--color-bg) 88%, transparent);
  backdrop-filter: saturate(1.1) blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 4rem;
}

.wordmark {
  font-weight: 600;
  letter-spacing: -0.01em;
  font-size: 1.15rem;
  color: var(--color-primary);
  text-decoration: none;
}

.site-nav {
  display: flex;
  gap: clamp(1rem, 3vw, 2rem);
}

.site-nav a {
  color: var(--color-muted);
  text-decoration: none;
  font-size: 0.95rem;
  padding: 0.25rem 0;
  border-bottom: 1px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.site-nav a:hover {
  color: var(--color-primary);
  border-bottom-color: var(--color-border);
}

/* ----- Hero ----- */
.hero {
  padding-block: clamp(4.5rem, 11vw, 9rem) var(--space-section);
}

.hero__inner {
  max-width: 46rem;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-muted);
  margin-bottom: 1.25rem;
}

.hero__title {
  font-size: clamp(2.25rem, 6vw, 3.75rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-weight: 650;
  color: var(--color-primary);
  text-wrap: balance;
}

.hero__lede {
  margin-top: 1.5rem;
  font-size: clamp(1.125rem, 2.2vw, 1.35rem);
  line-height: 1.55;
  color: var(--color-muted);
  max-width: 38rem;
  text-wrap: pretty;
}

.hero__actions {
  margin-top: 2.5rem;
}

/* ----- Buttons ----- */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font: inherit;
  font-weight: 550;
  font-size: 1rem;
  line-height: 1;
  padding: 0.85rem 1.6rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.15s ease, transform 0.05s ease, box-shadow 0.15s ease;
}

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

.button--primary:hover {
  background-color: #2a3a4d;
}

.button--primary:active {
  transform: translateY(1px);
}

/* In dark mode the primary token becomes light, so flip the button to a
   light surface with dark text for proper contrast. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .button--primary {
    color: #14161A;
  }

  :root:not([data-theme="light"]) .button--primary:hover {
    background-color: #FFFFFF;
  }
}

:root[data-theme="dark"] .button--primary {
  color: #14161A;
}

:root[data-theme="dark"] .button--primary:hover {
  background-color: #FFFFFF;
}

/* ----- Theme toggle ----- */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background-color: transparent;
  color: var(--color-muted);
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease, background-color 0.15s ease;
}

.theme-toggle:hover {
  color: var(--color-primary);
  border-color: color-mix(in srgb, var(--color-primary) 30%, var(--color-border));
}

.theme-toggle__icon {
  display: none;
}

.theme-toggle__icon--moon {
  display: block;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle__icon--moon {
    display: none;
  }

  :root:not([data-theme="light"]) .theme-toggle__icon--sun {
    display: block;
  }
}

:root[data-theme="dark"] .theme-toggle__icon--moon {
  display: none;
}

:root[data-theme="dark"] .theme-toggle__icon--sun {
  display: block;
}

/* ----- Services ----- */
.services {
  padding-block: var(--space-section);
  border-top: 1px solid var(--color-border);
}

.section-head {
  max-width: 40rem;
  margin-bottom: clamp(2.5rem, 5vw, 3.5rem);
}

.section-title {
  font-size: clamp(1.6rem, 3.5vw, 2.25rem);
  line-height: 1.15;
  letter-spacing: -0.015em;
  font-weight: 640;
  color: var(--color-primary);
}

.section-intro {
  margin-top: 0.85rem;
  color: var(--color-muted);
  font-size: 1.075rem;
  text-wrap: pretty;
}

.service-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1.25rem;
}

.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  transition: border-color 0.15s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.card:hover {
  border-color: color-mix(in srgb, var(--color-primary) 30%, var(--color-border));
  box-shadow: 0 6px 24px -16px rgba(31, 41, 51, 0.4);
  transform: translateY(-2px);
}

.card__heading {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-wrap: wrap;
}

.card__title {
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-primary);
}

.card__body {
  color: var(--color-muted);
  font-size: 1rem;
  text-wrap: pretty;
}

.badge {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  background-color: color-mix(in srgb, var(--color-accent) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--color-accent) 35%, transparent);
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  white-space: nowrap;
}

/* ----- Contact ----- */
.contact {
  padding-block: var(--space-section);
  border-top: 1px solid var(--color-border);
}

.contact__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 5vw, 3.5rem);
}

@media (min-width: 52rem) {
  .contact__inner {
    grid-template-columns: 0.85fr 1.15fr;
    align-items: start;
  }
}

.contact__intro {
  max-width: 28rem;
}

.contact-form {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: clamp(1.5rem, 4vw, 2.25rem);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.field label {
  font-size: 0.9rem;
  font-weight: 550;
  color: var(--color-primary);
}

.field input,
.field textarea {
  font: inherit;
  font-size: 1rem;
  color: var(--color-text);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.7rem 0.85rem;
  width: 100%;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
}

.field textarea {
  resize: vertical;
  min-height: 7rem;
}

.field input:focus,
.field textarea:focus {
  outline: none;
  background-color: var(--color-surface);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 18%, transparent);
}

.contact-form .button {
  align-self: start;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ----- Footer ----- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding-block: 2.5rem;
}

.site-footer p {
  color: var(--color-muted);
  font-size: 0.9rem;
}

/* ----- Motion preferences ----- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}
