/* ============ Jay Build Co. — brand tokens ============ */
:root,
[data-theme='light'] {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);

  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem; --space-4: 1rem;
  --space-5: 1.25rem; --space-6: 1.5rem; --space-8: 2rem; --space-10: 2.5rem;
  --space-12: 3rem; --space-16: 4rem; --space-20: 5rem; --space-24: 6rem; --space-32: 8rem;

  /* Brand: blue #0561F5, lime #8FD41C, silver #A8B0B8, black, light gray #D0D0D8 */
  --color-bg: #f4f5f7;
  --color-surface: #ffffff;
  --color-surface-offset: #e9ebee;
  --color-border: #cfd3d9;
  --color-divider: #dde0e5;
  --color-text: #14161a;
  --color-text-muted: #5a616b;
  --color-text-faint: #9aa1ab;
  --color-text-inverse: #f7f8fa;
  --color-primary: #0550cf;          /* brand blue, darkened for AA on light bg */
  --color-primary-hover: #043fa4;
  --color-primary-active: #033181;
  --color-lime: #8fd41c;
  --color-lime-ink: #4d7a06;         /* AA-safe lime for text on light bg */
  --color-steel: #a8b0b8;

  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-sm: 0 1px 2px oklch(0.2 0.02 260 / 0.07);
  --shadow-md: 0 4px 14px oklch(0.2 0.02 260 / 0.1);
  --shadow-lg: 0 12px 32px oklch(0.2 0.02 260 / 0.14);
  --content-wide: 1160px;

  --font-display: 'Archivo', 'Arial Black', sans-serif;
  --font-body: 'Satoshi', 'Segoe UI', sans-serif;
}

[data-theme='dark'] {
  --color-bg: #101216;
  --color-surface: #171a1f;
  --color-surface-offset: #1e2229;
  --color-border: #333a44;
  --color-divider: #262b33;
  --color-text: #d7dade;
  --color-text-muted: #8d939c;
  --color-text-faint: #5c626b;
  --color-text-inverse: #14161a;
  --color-primary: #4a8bff;
  --color-primary-hover: #6ba0ff;
  --color-primary-active: #8db4ff;
  --color-lime: #8fd41c;
  --color-lime-ink: #a5e93a;
  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.3);
  --shadow-md: 0 4px 14px oklch(0 0 0 / 0.4);
  --shadow-lg: 0 12px 32px oklch(0 0 0 / 0.5);
}

/* ============ base ============ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-20);
}
body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body, sans-serif);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
}
img, svg { display: block; max-width: 100%; height: auto; }
input, button, textarea, select { font: inherit; color: inherit; }
h1, h2, h3 { text-wrap: balance; line-height: 1.12; }
p, li { text-wrap: pretty; max-width: 72ch; }
ul[role='list'] { list-style: none; }
button { cursor: pointer; background: none; border: none; }
::selection { background: oklch(from var(--color-primary) l c h / 0.25); }
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; border-radius: var(--radius-sm); }
a, button, input, textarea, select {
  transition: color var(--transition-interactive), background var(--transition-interactive),
    border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}

.container { max-width: var(--content-wide); margin-inline: auto; padding-inline: clamp(var(--space-4), 4vw, var(--space-8)); }

/* ============ buttons ============ */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-body); font-weight: 700; font-size: var(--text-sm);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  text-decoration: none;
  border: 2px solid transparent;
  white-space: nowrap;
}
.btn--primary { background: var(--color-primary); color: #fff; }
[data-theme='dark'] .btn--primary { color: #0b0d10; }
.btn--primary:hover { background: var(--color-primary-hover); }
.btn--outline { border-color: var(--color-primary); color: var(--color-primary); }
.btn--outline:hover { background: oklch(from var(--color-primary) l c h / 0.1); }
.btn--ghost { color: var(--color-text); font-weight: 700; }
.btn--ghost:hover { color: var(--color-primary); }
.btn--lg { padding: var(--space-4) var(--space-6); font-size: var(--text-base); }

/* ============ header ============ */
.header {
  position: sticky; top: 0; z-index: 50;
  background: oklch(from var(--color-bg) l c h / 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-divider);
}
.header__inner { display: flex; align-items: center; gap: var(--space-6); padding-block: var(--space-3); }
.header__brand img { width: 132px; height: auto; }
.header__nav { display: flex; gap: var(--space-5); margin-inline-start: auto; }
.header__nav a { color: var(--color-text-muted); text-decoration: none; font-size: var(--text-sm); font-weight: 500; }
.header__nav a:hover { color: var(--color-primary); }
.header__actions { display: flex; align-items: center; gap: var(--space-2); }
.theme-toggle { color: var(--color-text-muted); padding: var(--space-2); border-radius: var(--radius-md); display: grid; place-items: center; }
.theme-toggle:hover { color: var(--color-text); background: var(--color-surface-offset); }

/* ============ hero ============ */
.hero {
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
  background:
    linear-gradient(oklch(from var(--color-bg) l c h / 0.94), oklch(from var(--color-bg) l c h / 0.99)),
    repeating-linear-gradient(-45deg, transparent 0 34px, oklch(from var(--color-steel) l c h / 0.5) 34px 36px);
  border-bottom: 1px solid var(--color-divider);
}
.hero__inner { max-width: 820px; }
.hero__kicker {
  font-family: var(--font-display); font-style: italic; font-weight: 700;
  font-size: var(--text-sm); letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--color-lime-ink); margin-bottom: var(--space-4);
}
.hero__title {
  font-family: var(--font-display); font-style: italic; font-weight: 850;
  font-size: var(--text-3xl); text-transform: uppercase; letter-spacing: -0.01em;
  margin-bottom: var(--space-6);
}
.hero__sub { color: var(--color-text-muted); font-size: var(--text-lg); font-weight: 400; margin-bottom: var(--space-8); }
.hero__cta { display: flex; flex-wrap: wrap; gap: var(--space-4); margin-bottom: var(--space-10); }
.hero__points { display: flex; flex-wrap: wrap; gap: var(--space-3) var(--space-6); }
.hero__points li {
  display: flex; align-items: center; gap: var(--space-2);
  font-size: var(--text-sm); font-weight: 700; color: var(--color-text-muted);
}
.hero__points li::before {
  content: ''; width: 10px; height: 10px; flex: none;
  background: var(--color-lime); clip-path: polygon(0 0, 100% 0, 100% 100%);
}

/* ============ sections ============ */
.section__title {
  font-family: var(--font-display); font-style: italic; font-weight: 800;
  font-size: var(--text-xl); text-transform: uppercase;
  display: flex; align-items: center; gap: var(--space-3);
  margin-bottom: var(--space-8);
}
.accent-bar { width: 34px; height: 12px; flex: none; background: var(--color-primary); transform: skewX(-18deg); box-shadow: 5px 5px 0 0 var(--color-lime); }

.services { padding-block: clamp(var(--space-16), 8vw, var(--space-24)); }
.services__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: var(--space-5); }
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  border-top: 3px solid var(--color-primary);
}
.card__icon {
  width: 44px; height: 44px; color: var(--color-primary);
  background: oklch(from var(--color-primary) l c h / 0.09);
  border-radius: var(--radius-md);
  display: grid; place-items: center;
  margin-bottom: var(--space-4);
}
.card__icon svg { width: 26px; height: 26px; }
.card h3 { font-size: var(--text-lg); font-weight: 700; margin-bottom: var(--space-2); }
.card p { color: var(--color-text-muted); font-size: var(--text-sm); }

/* ============ about ============ */
.about { padding-block: clamp(var(--space-16), 8vw, var(--space-24)); background: var(--color-surface-offset); border-block: 1px solid var(--color-divider); }
.about__inner { display: grid; grid-template-columns: 1.4fr 1fr; gap: var(--space-12); align-items: center; }
.about__text p { color: var(--color-text-muted); margin-bottom: var(--space-5); }
.about__mark { display: grid; place-items: center; }
.about__mark img { width: min(360px, 100%); }

/* ============ contact ============ */
.contact { padding-block: clamp(var(--space-16), 8vw, var(--space-24)); }
.contact__inner { display: grid; grid-template-columns: 1fr 1.2fr; gap: var(--space-12); align-items: start; }
.contact__info > p { color: var(--color-text-muted); margin-bottom: var(--space-8); }
.contact__list { display: grid; gap: var(--space-5); }
.contact__list li { display: grid; gap: var(--space-1); }
.contact__label { font-size: var(--text-xs); font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-text-faint); }
.contact__list a { color: var(--color-primary); font-weight: 700; text-decoration: none; }
.contact__list a:hover { text-decoration: underline; }

.contact__form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  border-top: 3px solid var(--color-lime);
  box-shadow: var(--shadow-md);
  padding: clamp(var(--space-6), 4vw, var(--space-8));
  display: grid; gap: var(--space-5);
}
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-5); }
.contact__form label { display: grid; gap: var(--space-2); font-size: var(--text-sm); font-weight: 700; }
.contact__form input, .contact__form select, .contact__form textarea {
  width: 100%;
  padding: var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  font-weight: 400; font-size: var(--text-base);
}
.contact__form input:focus, .contact__form select:focus, .contact__form textarea:focus {
  outline: 2px solid var(--color-primary); outline-offset: 0; border-color: var(--color-primary);
}
.form__note { font-size: var(--text-xs); color: var(--color-text-faint); }
.contact__form label.form__check { display: flex; flex-direction: row; align-items: center; gap: 0.55rem; font-size: var(--text-sm); color: var(--color-text-muted); cursor: pointer; }
.contact__form .form__check input { width: 1.1rem; height: 1.1rem; accent-color: var(--color-primary); flex: none; margin: 0; }

/* ============ footer ============ */
.footer { background: #14161a; color: #b9bec6; padding-block: var(--space-16); }
[data-theme='dark'] .footer { background: #0b0d10; border-top: 1px solid var(--color-divider); }
.footer__inner { display: grid; gap: var(--space-4); justify-items: center; text-align: center; }
.footer__inner img { width: min(300px, 70vw); }
.footer p { font-size: var(--text-sm); max-width: none; }
.footer__meta { font-size: var(--text-xs); color: #858c96; }
.footer a { color: #cfd4db; text-decoration: none; }
.footer a:hover { color: #fff; }

/* ============ responsive ============ */
@media (max-width: 860px) {
  .header__nav { display: none; }
  .header__actions .btn--ghost { display: none; }
  .about__inner, .contact__inner { grid-template-columns: 1fr; }
  .about__mark { order: -1; }
  .about__mark img { width: min(260px, 70%); }
}
@media (max-width: 560px) {
  .form__row { grid-template-columns: 1fr; }
  .hero__cta .btn { width: 100%; }
}