/* =====================================================================
   Blue Sky Studio — styles.css
   Modular, token-driven CSS. Mobile-first. Built for clean WordPress
   FSE portability (semantic sections, BEM-ish naming, CSS variables).
   ===================================================================== */

/* ---------- Design Tokens ---------- */
:root {
  /* Palette */
  --color-bg:            #0d0d0f;   /* near-black charcoal */
  --color-bg-elevated:   #15151a;   /* raised panels / cards */
  --color-bg-deep:       #08080a;   /* footer / deepest */
  --color-surface-line:  #26262e;   /* hairline borders */
  --color-text:          #ede9e3;   /* warm off-white body */
  --color-text-muted:    #a39d94;   /* secondary text */
  --color-accent:        #b07b3e;   /* warm bronze */
  --color-accent-bright: #cf9a55;   /* bronze hover/highlight */
  --color-patina:        #5e7d6f;   /* subtle patina green */

  /* Typography */
  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --font-body:    "Inter", system-ui, -apple-system, Helvetica, Arial, sans-serif;

  --fs-eyebrow:  0.8125rem;   /* 13px */
  --fs-body:     1.0625rem;   /* 17px */
  --fs-lead:     1.25rem;     /* 20px */
  --fs-h3:       clamp(1.4rem, 3.5vw, 1.875rem);
  --fs-h2:       clamp(2rem, 6vw, 3.25rem);
  --fs-hero:     clamp(3rem, 14vw, 8rem);

  /* Spacing rhythm (8px base) */
  --space-2xs: 0.5rem;
  --space-xs:  0.75rem;
  --space-sm:  1rem;
  --space-md:  1.5rem;
  --space-lg:  2.5rem;
  --space-xl:  4rem;
  --space-2xl: 6rem;
  --space-3xl: 9rem;

  /* Layout */
  --container-max: 1200px;
  --container-pad: 1.5rem;
  --header-h:      4.5rem;

  /* Effects */
  --radius:       4px;
  --transition:   220ms ease;
  --shadow-soft:  0 18px 50px rgba(0, 0, 0, 0.45);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.65;
  font-weight: 300;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.08;
  margin: 0;
  letter-spacing: -0.01em;
}

p { margin: 0; }

ul { margin: 0; padding: 0; list-style: none; }

/* ---------- Accessibility ---------- */
:focus-visible {
  outline: 2px solid var(--color-accent-bright);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  z-index: 1000;
  background: var(--color-accent);
  color: #1a1208;
  padding: var(--space-2xs) var(--space-sm);
  border-radius: var(--radius);
  font-weight: 600;
}
.skip-link:focus { left: var(--space-sm); top: var(--space-sm); }

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

.section {
  padding-block: var(--space-2xl);
  border-top: 1px solid var(--color-surface-line);
}

.section__eyebrow,
.hero__eyebrow {
  font-family: var(--font-body);
  font-size: var(--fs-eyebrow);
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-accent-bright);
  margin-bottom: var(--space-md);
}

.section__title {
  font-size: var(--fs-h2);
  max-width: 18ch;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  padding: 0.95rem 2rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color var(--transition), color var(--transition),
              border-color var(--transition), transform var(--transition);
}

.btn--primary {
  background-color: var(--color-accent);
  color: #1a1208;
}
.btn--primary:hover {
  background-color: var(--color-accent-bright);
  transform: translateY(-2px);
}

/* =====================================================================
   HEADER
   ===================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(13, 13, 15, 0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-surface-line);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-h);
}

.wordmark {
  display: flex;
  flex-direction: column;
  line-height: 0.92;
  font-family: var(--font-body);
  font-weight: 600;
  letter-spacing: 0.18em;
  font-size: 0.875rem;
}
.wordmark__line--accent { color: var(--color-accent-bright); }

/* Nav */
.nav__list {
  display: flex;
  gap: var(--space-lg);
}
.nav__link {
  position: relative;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  transition: color var(--transition);
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 1px;
  background-color: var(--color-accent-bright);
  transition: width var(--transition);
}
.nav__link:hover,
.nav__link:focus-visible { color: var(--color-text); }
.nav__link:hover::after { width: 100%; }

/* Hamburger toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
}
.nav-toggle__bar {
  display: block;
  height: 2px;
  width: 100%;
  background-color: var(--color-text);
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* =====================================================================
   HERO
   ===================================================================== */
.hero {
  position: relative;
  min-height: calc(100svh - var(--header-h));
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.hero__media {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 70% 30%, rgba(176, 123, 62, 0.28), transparent 55%),
    url("https://picsum.photos/seed/blueskyfoundry/1920/1280");
  background-size: cover;
  background-position: center;
  filter: saturate(0.85) contrast(1.05);
  transform: scale(1.02);
}

.hero__scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(13, 13, 15, 0.55) 0%,
    rgba(13, 13, 15, 0.35) 45%,
    rgba(13, 13, 15, 0.95) 100%
  );
}

.hero__inner {
  position: relative;
  z-index: 1;
  padding-block: var(--space-2xl);
}

.hero__title {
  font-size: var(--fs-hero);
  font-weight: 400;
  line-height: 0.95;
  margin-block: var(--space-2xs) var(--space-md);
}

.hero__tagline {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--fs-lead);
  color: var(--color-text);
  max-width: 32ch;
  margin-bottom: var(--space-lg);
}

/* =====================================================================
   ABOUT
   ===================================================================== */
.about__grid {
  display: grid;
  gap: var(--space-lg);
}
.about__body {
  display: grid;
  gap: var(--space-sm);
  color: var(--color-text-muted);
  font-size: var(--fs-lead);
  max-width: 60ch;
}

/* =====================================================================
   SERVICES
   ===================================================================== */
.services__phases {
  display: grid;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.phase {
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-surface-line);
  border-radius: var(--radius);
  padding: var(--space-lg);
  transition: border-color var(--transition), transform var(--transition);
}
.phase:hover {
  border-color: var(--color-accent);
  transform: translateY(-3px);
}

.phase__header {
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
  padding-bottom: var(--space-md);
  margin-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-surface-line);
}
.phase__num {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--color-accent);
}
.phase__name { font-size: var(--fs-h3); }

.service-list {
  display: grid;
  gap: var(--space-md);
}
.service__title {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 0.2rem;
}
.service__desc {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* =====================================================================
   GALLERY
   ===================================================================== */
.gallery__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-sm);
  margin-top: var(--space-xl);
}
.gallery__item {
  overflow: hidden;
  border-radius: var(--radius);
  background-color: var(--color-bg-elevated);
}
/* Trigger is a real button so tiles are keyboard-operable */
.gallery__trigger {
  display: block;
  width: 100%;
  height: 100%;
  padding: 0;
  border: none;
  background: none;
  cursor: zoom-in;
}
.gallery__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 500ms ease, filter var(--transition);
  filter: grayscale(0.15);
}
.gallery__trigger:hover img,
.gallery__trigger:focus-visible img {
  transform: scale(1.05);
  filter: grayscale(0);
}
.gallery__trigger:focus-visible {
  outline: 2px solid var(--color-accent-bright);
  outline-offset: -2px;
}

/* ---------- Lightbox (native <dialog>) ---------- */
.lightbox {
  width: min(92vw, 1100px);
  max-width: 92vw;
  max-height: 92vh;
  padding: 0;
  border: 1px solid var(--color-surface-line);
  border-radius: var(--radius);
  background-color: var(--color-bg-elevated);
  color: var(--color-text);
  overflow: visible;
}
.lightbox::backdrop {
  background-color: rgba(8, 8, 10, 0.85);
  backdrop-filter: blur(4px);
}
.lightbox__figure {
  margin: 0;
  display: grid;
  gap: var(--space-xs);
  padding: var(--space-sm);
}
.lightbox__img {
  width: 100%;
  max-height: 80vh;
  object-fit: contain;
  border-radius: var(--radius);
  background-color: var(--color-bg-deep);
}
.lightbox__caption {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  text-align: center;
}
.lightbox__close {
  position: absolute;
  top: -14px;
  right: -14px;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-surface-line);
  border-radius: 50%;
  background-color: var(--color-bg-deep);
  color: var(--color-text);
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition),
              transform var(--transition);
}
.lightbox__close svg { width: 18px; height: 18px; fill: currentColor; }
.lightbox__close:hover {
  color: var(--color-accent-bright);
  border-color: var(--color-accent);
  transform: rotate(90deg);
}

/* =====================================================================
   CONTACT
   ===================================================================== */
.contact__inner {
  display: grid;
  gap: var(--space-xl);
}
.contact__lede {
  color: var(--color-text-muted);
  font-size: var(--fs-lead);
  max-width: 42ch;
  margin-bottom: var(--space-lg);
}

.contact__details {
  display: grid;
  gap: var(--space-md);
}
.contact__details li { display: grid; gap: 0.15rem; }
.contact__label {
  font-size: var(--fs-eyebrow);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent-bright);
}
.contact__value { color: var(--color-text); }
a.contact__value { transition: color var(--transition); }
a.contact__value:hover { color: var(--color-accent-bright); }

/* Form */
.contact__form {
  display: grid;
  gap: var(--space-md);
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-surface-line);
  border-radius: var(--radius);
  padding: var(--space-lg);
}
.field { display: grid; gap: var(--space-2xs); }
.field__label {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
}
.field__input {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-text);
  background-color: var(--color-bg);
  border: 1px solid var(--color-surface-line);
  border-radius: var(--radius);
  padding: 0.8rem 0.9rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.field__input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(176, 123, 62, 0.25);
}
.field__input--textarea { resize: vertical; min-height: 7rem; }

/* =====================================================================
   FOOTER
   ===================================================================== */
.site-footer {
  background-color: var(--color-bg-deep);
  border-top: 1px solid var(--color-surface-line);
  padding-block: var(--space-xl);
}
.site-footer__inner {
  display: grid;
  gap: var(--space-lg);
}
.wordmark--footer { font-size: 1rem; }
.site-footer__blurb {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-top: var(--space-sm);
  max-width: 30ch;
}
.nav__list--footer { flex-wrap: wrap; gap: var(--space-md); }

.social { display: flex; gap: var(--space-sm); }
.social__link {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-surface-line);
  border-radius: 50%;
  color: var(--color-text-muted);
  transition: color var(--transition), border-color var(--transition);
}
.social__link svg { width: 18px; height: 18px; fill: currentColor; }
.social__link:hover {
  color: var(--color-accent-bright);
  border-color: var(--color-accent);
}

.site-footer__copy {
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

/* =====================================================================
   MOTION — fade-in on scroll (the single motion touch)
   ===================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 700ms ease, transform 700ms ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* =====================================================================
   RESPONSIVE — 768px (tablet) and 1024px+ (desktop)
   ===================================================================== */
@media (max-width: 767px) {
  /* Mobile nav: slide-down panel */
  .nav {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background-color: var(--color-bg-elevated);
    border-bottom: 1px solid var(--color-surface-line);
    transform: translateY(-130%);
    transition: transform 300ms ease;
    visibility: hidden;
  }
  .nav.is-open {
    transform: translateY(0);
    visibility: visible;
  }
  .nav__list {
    flex-direction: column;
    gap: 0;
    padding: var(--space-sm) var(--container-pad);
  }
  .nav__list .nav__link {
    display: block;
    padding-block: var(--space-sm);
    border-bottom: 1px solid var(--color-surface-line);
    font-size: 1.05rem;
  }
  .nav-toggle { display: flex; }
}

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

  .gallery__grid {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-flow: dense;
  }
  .gallery__item--wide { grid-column: span 2; }

  .about__grid {
    grid-template-columns: 1fr 1.2fr;
    gap: var(--space-xl);
    align-items: start;
  }

  .site-footer__inner {
    grid-template-columns: 1.5fr 1fr auto;
    align-items: start;
  }
  .site-footer__copy { grid-column: 1 / -1; }
}

@media (min-width: 1024px) {
  .gallery__grid { grid-template-columns: repeat(4, 1fr); }
  .gallery__item--tall { grid-row: span 2; }
  .gallery__item--wide { grid-column: span 2; }

  .contact__inner {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: start;
  }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}