/* ============================================================
   Calima Electric — Design System
   Editorial luxury: near-black canvas, warm off-white type,
   brass/copper accent. Fraunces serif display + Inter body.
   ============================================================ */

:root {
  /* Surfaces */
  --canvas: #0c0c0e;
  --canvas-2: #141417;
  --surface: #1a1a1f;
  --surface-2: #212128;
  --line: rgba(232, 224, 210, 0.12);
  --line-strong: rgba(232, 224, 210, 0.22);

  /* Text */
  --ink: #f4efe6;          /* warm off-white */
  --ink-soft: #c9c2b6;
  --ink-mute: #8d877c;     /* tinted secondary, not flat gray */
  --ink-faint: #5c584f;

  /* Accent — brass/copper (electrical warmth + luxury) */
  --brass: #c89b5a;
  --brass-soft: #d8b277;
  --brass-deep: #9c7536;

  /* Type */
  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  /* Spacing scale (4-base, with middle steps) */
  --s1: 0.25rem;
  --s2: 0.5rem;
  --s3: 0.75rem;
  --s4: 1rem;
  --s5: 1.5rem;
  --s6: 2rem;
  --s7: 3rem;
  --s8: 4.5rem;
  --s9: 7rem;
  --s10: 10rem;

  /* Motion */
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);
  --r: 2px;
  --maxw: 1240px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.65;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

::selection { background: var(--brass); color: var(--canvas); }

/* Custom scrollbar */
::-webkit-scrollbar { width: 11px; }
::-webkit-scrollbar-track { background: var(--canvas); }
::-webkit-scrollbar-thumb {
  background: var(--surface-2);
  border: 3px solid var(--canvas);
  border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover { background: var(--brass-deep); }

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 200;
  background: var(--brass); color: var(--canvas);
  padding: var(--s2) var(--s4); border-radius: var(--r);
}
.skip-link:focus { left: var(--s4); top: var(--s4); }

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

/* ---------- Buttons ---------- */
.btn {
  --pad-y: 0.85rem;
  --pad-x: 1.6rem;
  display: inline-flex; align-items: center; justify-content: center;
  gap: 0.5rem;
  padding: var(--pad-y) var(--pad-x);
  font-family: var(--sans);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--r);
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 160ms var(--ease-out), background 200ms ease,
              color 200ms ease, border-color 200ms ease;
  will-change: transform;
}
.btn:active { transform: scale(0.97); }

.btn--solid {
  background: var(--brass);
  color: #1a1206;
}
.btn--solid:hover { background: var(--brass-soft); }

.btn--ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-strong);
}
.btn--ghost:hover { border-color: var(--brass); color: var(--brass-soft); }

/* ---------- Nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background 300ms ease, border-color 300ms ease, backdrop-filter 300ms ease;
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: rgba(12, 12, 14, 0.82);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--line);
}
.nav__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 1.1rem var(--s6);
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--s5);
}
.nav__brand { display: flex; align-items: center; gap: 0.7rem; }
.nav__logo {
  height: 40px; width: auto; object-fit: contain;
  filter: drop-shadow(0 1px 2px rgba(0,0,0,0.5));
}
.nav__word {
  font-family: var(--sans);
  font-size: 0.92rem; font-weight: 600;
  letter-spacing: 0.22em; color: var(--ink);
}
.nav__word em { font-style: normal; color: var(--brass); }

.nav__links { display: flex; gap: var(--s6); }
.nav__links a {
  font-size: 0.82rem; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink-soft); font-weight: 500;
  position: relative; padding: 0.3rem 0;
  transition: color 200ms ease;
}
.nav__links a::after {
  content: ""; position: absolute; left: 0; bottom: -2px;
  width: 100%; height: 1px; background: var(--brass);
  transform: scaleX(0); transform-origin: left;
  transition: transform 260ms var(--ease-out);
}
.nav__links a:hover { color: var(--ink); }
.nav__links a:hover::after { transform: scaleX(1); }

.nav__cta { --pad-y: 0.7rem; --pad-x: 1.2rem; }

.nav__toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 8px;
}
.nav__toggle span {
  width: 24px; height: 2px; background: var(--ink); border-radius: 2px;
  transition: transform 240ms var(--ease-out), opacity 200ms ease;
}
.nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:nth-child(2) { transform: translateY(-0px) rotate(-45deg); }

/* Mobile menu */
.menu {
  position: fixed; inset: 0; z-index: 90;
  background: rgba(12, 12, 14, 0.97);
  backdrop-filter: blur(10px);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden;
  transition: opacity 300ms ease, visibility 300ms ease;
}
.menu.is-open { opacity: 1; visibility: visible; }
.menu__links {
  display: flex; flex-direction: column; align-items: center; gap: var(--s5);
  text-align: center;
}
.menu__links a {
  font-family: var(--serif);
  font-size: 1.9rem; color: var(--ink); font-weight: 400;
  opacity: 0; transform: translateY(14px);
}
.menu.is-open .menu__links a { animation: menuIn 420ms var(--ease-out) forwards; }
.menu.is-open .menu__links a:nth-child(1) { animation-delay: 60ms; }
.menu.is-open .menu__links a:nth-child(2) { animation-delay: 120ms; }
.menu.is-open .menu__links a:nth-child(3) { animation-delay: 180ms; }
.menu.is-open .menu__links a:nth-child(4) { animation-delay: 240ms; }
.menu.is-open .menu__links a:nth-child(5) { animation-delay: 300ms; }
.menu__links .btn { margin-top: var(--s3); }
@keyframes menuIn { to { opacity: 1; transform: translateY(0); } }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex; align-items: flex-end;
  padding: 0 var(--s6) var(--s9);
  overflow: hidden;
}
.hero__bg { position: absolute; inset: 0; z-index: 0; }
.hero__bg img {
  width: 100%; height: 100%; object-fit: cover;
  filter: saturate(0.85) brightness(0.62);
  transform: scale(1.05);
}
.hero__scrim {
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(12,12,14,0.65) 0%, rgba(12,12,14,0.25) 35%, rgba(12,12,14,0.85) 100%),
    radial-gradient(120% 80% at 20% 90%, rgba(12,12,14,0.9), transparent 60%);
}
.hero__inner {
  position: relative; z-index: 1;
  max-width: var(--maxw); margin: 0 auto; width: 100%;
}
.hero__title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.4rem, 6.2vw, 5.4rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  max-width: 16ch;
  text-wrap: balance;
}
.hero__title { color: var(--ink); }
.hero__lede {
  margin-top: var(--s5);
  max-width: 52ch;
  font-size: clamp(1rem, 1.4vw, 1.2rem);
  color: var(--ink-soft);
  line-height: 1.6;
}
.hero__actions { margin-top: var(--s6); display: flex; gap: var(--s4); flex-wrap: wrap; }

.hero__scroll {
  position: absolute; bottom: var(--s6); right: var(--s6); z-index: 1;
  width: 1px; height: 64px; background: var(--line-strong); overflow: hidden;
}
.hero__scroll span {
  display: block; width: 100%; height: 40%;
  background: var(--brass);
  animation: scrollPulse 2.4s var(--ease-in-out) infinite;
}
@keyframes scrollPulse {
  0% { transform: translateY(-100%); }
  60%, 100% { transform: translateY(100%); }
}

/* ---------- Statement ---------- */
.statement {
  max-width: 980px; margin: 0 auto;
  padding: var(--s10) var(--s6);
}
.statement p {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(1.5rem, 3.2vw, 2.6rem);
  line-height: 1.32;
  letter-spacing: -0.01em;
  text-align: center;
  color: var(--ink);
  text-wrap: balance;
}
.statement p::first-line { }

/* ---------- Section heads ---------- */
.section-head {
  max-width: var(--maxw); margin: 0 auto;
  padding: 0 var(--s6);
  margin-bottom: var(--s8);
}
.section-title {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(2rem, 4.4vw, 3.4rem);
  letter-spacing: -0.02em;
  line-height: 1.05;
}
.section-sub {
  margin-top: var(--s4);
  max-width: 56ch;
  color: var(--ink-mute);
  font-size: clamp(1rem, 1.3vw, 1.12rem);
}

/* ---------- Services / Offerings ---------- */
.services { padding: var(--s8) 0 var(--s9); }
.offerings {
  max-width: var(--maxw); margin: 0 auto; padding: 0 var(--s6);
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 1px; background: var(--line);
  border: 1px solid var(--line);
}
.offering {
  background: var(--canvas);
  padding: var(--s7) var(--s6);
  position: relative;
  transition: background 300ms ease;
}
.offering:hover { background: var(--canvas-2); }
.offering h3 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(1.25rem, 2vw, 1.6rem);
  letter-spacing: -0.01em;
  margin-bottom: var(--s3);
  padding-left: var(--s5);
  position: relative;
}
.offering h3::before {
  content: ""; position: absolute; left: 0; top: 0.62em;
  width: 22px; height: 1px; background: var(--brass);
}
.offering p {
  color: var(--ink-mute);
  font-size: 0.98rem;
  line-height: 1.62;
  padding-left: var(--s5);
}

/* ---------- Work / Projects ---------- */
.work { padding: var(--s9) 0; background: var(--canvas-2); }
.project {
  max-width: var(--maxw); margin: 0 auto;
  padding: 0 var(--s6);
  display: grid; grid-template-columns: 1.15fr 0.85fr;
  gap: var(--s8); align-items: center;
  margin-bottom: var(--s10);
}
.project:last-child { margin-bottom: 0; }
.project--reverse { direction: rtl; }
.project--reverse > * { direction: ltr; }

.project__media {
  position: relative; overflow: hidden; border-radius: var(--r);
  aspect-ratio: 4 / 3; border: 1px solid var(--line);
}
.project__media img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 700ms var(--ease-out), filter 500ms ease;
  filter: saturate(0.9) brightness(0.92);
}
.project:hover .project__media img { transform: scale(1.04); filter: saturate(1) brightness(1); }

.project__name {
  font-family: var(--serif); font-weight: 500;
  font-size: clamp(1.8rem, 3.4vw, 2.8rem);
  letter-spacing: -0.02em; line-height: 1.05;
}
.project__meta {
  margin-top: var(--s2); margin-bottom: var(--s5);
  font-size: 0.78rem; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--brass); font-weight: 500;
}
.project__body p { color: var(--ink-soft); font-size: 1rem; line-height: 1.7; }
.project__body p + p { margin-top: var(--s4); }

/* ---------- Clients ---------- */
.clients {
  max-width: var(--maxw); margin: 0 auto;
  padding: var(--s9) var(--s6);
  text-align: center;
}
.clients__label {
  font-size: 0.8rem; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--ink-mute); margin-bottom: var(--s6);
}
.clients__list {
  display: flex; flex-wrap: wrap; justify-content: center;
  gap: var(--s5) var(--s7);
}
.clients__list li {
  font-family: var(--serif);
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  letter-spacing: 0.12em;
  color: var(--ink-soft);
  opacity: 0.7;
  transition: color 300ms ease, opacity 300ms ease;
}
.clients__list li:hover { color: var(--brass-soft); opacity: 1; }

/* ---------- Contact ---------- */
.contact { padding: var(--s9) 0; }
.contact__grid {
  max-width: var(--maxw); margin: 0 auto; padding: 0 var(--s6);
  display: grid; grid-template-columns: 1fr 1fr; gap: var(--s9);
  align-items: start;
}
.contact__intro .section-sub { margin-bottom: var(--s7); }
.contact__details { display: flex; flex-direction: column; gap: var(--s5); }
.contact__details li {
  display: flex; flex-direction: column; gap: var(--s1);
  padding-bottom: var(--s4); border-bottom: 1px solid var(--line);
}
.contact__k {
  font-size: 0.74rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-faint);
}
.contact__v { font-size: 1.05rem; color: var(--ink); }

/* Form */
.form { display: flex; flex-direction: column; gap: var(--s5); }
.field { display: flex; flex-direction: column; gap: var(--s2); }
.field label {
  font-size: 0.76rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-mute); font-weight: 500;
}
.field input, .field textarea {
  font-family: var(--sans); font-size: 1rem; color: var(--ink);
  background: var(--surface-2); border: 1px solid var(--line-strong);
  border-radius: var(--r); padding: 0.9rem 1rem;
  transition: border-color 200ms ease, background 200ms ease, box-shadow 200ms ease;
  width: 100%; resize: vertical;
}
.field input::placeholder, .field textarea::placeholder { color: var(--ink-faint); }
.field input:focus, .field textarea:focus {
  outline: none; border-color: var(--brass);
  background: #26262e;
  box-shadow: 0 0 0 1px var(--brass);
}
.field.has-error input, .field.has-error textarea { border-color: #c0492f; }
.field__error {
  font-size: 0.78rem; color: #e08a6f; min-height: 0;
  opacity: 0; transform: translateY(-4px);
  transition: opacity 200ms ease, transform 200ms ease;
}
.field.has-error .field__error { opacity: 1; transform: translateY(0); }

.form__submit { align-self: flex-start; margin-top: var(--s2); }
.form__submit:disabled { opacity: 0.55; cursor: progress; }
.form__status { font-size: 0.9rem; color: var(--brass-soft); min-height: 1.2em; }
.form__status.is-error { color: #e08a6f; }

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--line);
  padding: var(--s8) var(--s6) var(--s6);
  background: var(--canvas);
}
.footer__inner {
  max-width: var(--maxw); margin: 0 auto;
  display: grid; grid-template-columns: 1.4fr 1fr; gap: var(--s5) var(--s6);
  align-items: start;
}
.footer__brand { display: flex; flex-direction: column; gap: var(--s4); }
.footer__lockup {
  height: 96px; width: auto; object-fit: contain; align-self: flex-start;
  filter: drop-shadow(0 2px 6px rgba(0,0,0,0.45));
}
.footer__tag {
  max-width: 30ch; font-size: 0.95rem; line-height: 1.6; color: var(--ink-mute);
}
.footer__links { display: flex; flex-wrap: wrap; gap: var(--s5); justify-content: flex-end; }
.footer__links a {
  font-size: 0.8rem; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink-mute); transition: color 200ms ease;
}
.footer__links a:hover { color: var(--brass); }
.footer__legal {
  grid-column: 1 / -1; margin-top: var(--s5); padding-top: var(--s5);
  border-top: 1px solid var(--line);
  font-size: 0.8rem; color: var(--ink-faint);
}
@media (max-width: 640px) {
  .footer__inner { grid-template-columns: 1fr; }
  .footer__links { justify-content: flex-start; }
}

/* ---------- Reveal animation ---------- */
/* Reveal hidden ONLY when JS is active. If JS fails to load, content stays visible. */
.js .reveal {
  opacity: 0; transform: translateY(26px);
  transition: opacity 800ms var(--ease-out), transform 800ms var(--ease-out);
  will-change: opacity, transform;
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .nav__links, .nav__cta { display: none; }
  .nav__toggle { display: flex; }
  .offerings { grid-template-columns: 1fr; }
  .project, .project--reverse {
    grid-template-columns: 1fr; gap: var(--s5); direction: ltr;
    margin-bottom: var(--s8);
  }
  .contact__grid { grid-template-columns: 1fr; gap: var(--s7); }
}

@media (max-width: 640px) {
  .nav__inner { padding: 0.9rem var(--s5); }
  .hero { padding: 0 var(--s5) var(--s8); min-height: 92svh; }
  .hero__scroll { display: none; }
  .statement { padding: var(--s8) var(--s5); }
  .section-head, .offerings, .project, .clients, .contact__grid { padding-left: var(--s5); padding-right: var(--s5); }
  .offering { padding: var(--s6) var(--s5); }
  .section-head { margin-bottom: var(--s7); }
  .work, .contact, .clients { padding-top: var(--s8); padding-bottom: var(--s8); }
  .hero__actions { width: 100%; }
  .hero__actions .btn { flex: 1; }
  .btn { --pad-x: 1.2rem; }
}

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