/* ========== Z25 Studio — shared foundation ========== */
/* Used by projects.html and project/*.html. The homepage (z25-studio.html)
   currently keeps its own inline copy of these rules. */

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

:root {
  --bg: #0a0a0a;
  --bg-elev: #141414;
  --bg-card: #161616;
  --fg: #ffffff;
  --fg-dim: #b3b3b3;
  --fg-muted: #6e6e6e;
  --accent: #ff4d18;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --radius: 4px;
  --container: 1240px;
  --gap: 8px;
  --display: "Inter Tight", "Archivo", system-ui, sans-serif;
  --body: "Archivo", system-ui, sans-serif;
}

html { background: var(--bg); color: var(--fg); font-family: var(--body); -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; scroll-behavior: smooth; }
body { min-height: 100vh; overflow-x: hidden; line-height: 1.5; font-size: 15px; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
::selection { background: var(--accent); color: #000; }

/* layout helpers */
.container { max-width: var(--container); margin: 0 auto; padding: 0 32px; }
.section { padding: 120px 0; }
.section-top { padding: 80px 0 40px; }

.display {
  font-family: var(--display);
  font-weight: 900;
  line-height: 0.94;
  letter-spacing: -0.035em;
  text-transform: uppercase;
}
.display-xl { font-size: clamp(48px, 9vw, 132px); }
.display-lg { font-size: clamp(40px, 6.5vw, 88px); }
.display-md { font-size: clamp(32px, 4.5vw, 56px); }

.lede {
  max-width: 580px;
  color: var(--fg-dim);
  font-size: 17px;
  line-height: 1.55;
  margin-top: 28px;
}

.eyebrow {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 24px;
}

.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 32px;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fg);
  border-bottom: 1px solid var(--fg);
  padding-bottom: 4px;
  transition: color 0.2s, border-color 0.2s, gap 0.2s;
}
.arrow-link:hover { color: var(--accent); border-color: var(--accent); gap: 12px; }

/* ========== navbar ========== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background 0.3s, border-color 0.3s;
  border-bottom: 1px solid transparent;
  color: #fff;
}
.nav.scrolled {
  background: #0a0a0a;
  border-bottom-color: var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 32px;
  max-width: var(--container);
  margin: 0 auto;
}
.logo { display: flex; align-items: center; }
.logo svg { width: 102px; height: auto; }
.logo img { height: 56px; width: auto; display: block; }
.nav-links {
  display: flex;
  gap: 36px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 500;
  color: #fff;
}
.nav-links a { color: #fff; opacity: 0.78; transition: opacity 0.2s; }
.nav-links a:hover { opacity: 1; }
.nav-links a.active { opacity: 1; color: var(--accent); }
.nav-cta {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-weight: 600;
  padding: 4px 0;
  border: none;
  border-radius: 0;
  background: none;
  color: #fff;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: gap 0.3s;
}
.nav-cta::after {
  content: "→";
  font-size: 14px;
  display: inline-block;
  transition: transform 0.3s;
}
.nav-cta:hover { background: none; gap: 14px; }
.nav-cta:hover::after { transform: translateX(2px); }

/* ========== reveal / on-load animations (CSS-only) ========== */
.reveal[data-on-load] {
  opacity: 0;
  transform: translateY(28px);
  animation: revealUp 0.95s cubic-bezier(0.2, 0.85, 0.2, 1) forwards;
  animation-delay: var(--delay, 0s);
  will-change: opacity, transform;
}
@keyframes revealUp { to { opacity: 1; transform: translateY(0); } }

.reveal-mask {
  display: block;
  overflow: hidden;
  padding-bottom: 0.08em;
  padding-top: 0.2em;
  margin-top: -0.2em;
}
.reveal-mask[data-on-load] > span {
  display: block;
  transform: translateY(108%);
  animation: revealLineIn 1.15s cubic-bezier(0.2, 0.85, 0.2, 1) forwards;
  animation-delay: var(--delay, 0s);
  will-change: transform;
}
@keyframes revealLineIn { to { transform: translateY(0); } }

.js .reveal:not([data-on-load]) {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.9s ease,
    transform 1s cubic-bezier(0.2, 0.85, 0.2, 1),
    padding-left 0.5s cubic-bezier(0.2, 0.85, 0.2, 1);
  transition-delay: var(--delay, 0s), var(--delay, 0s), 0s;
  will-change: opacity, transform;
}
.js .reveal:not([data-on-load]).is-visible {
  opacity: 1;
  transform: translateY(0);
}
.js .reveal-mask:not([data-on-load]) > span {
  display: block;
  transform: translateY(108%);
  transition: transform 1.15s cubic-bezier(0.2, 0.85, 0.2, 1);
  transition-delay: var(--delay, 0s);
  will-change: transform;
}
.js .reveal-mask:not([data-on-load]).is-visible > span {
  transform: translateY(0);
}
.js .stagger > .reveal {
  transition-delay:
    calc(var(--i, 0) * 0.075s + var(--delay, 0s)),
    calc(var(--i, 0) * 0.075s + var(--delay, 0s)),
    0s;
}

/* ========== footer ========== */
.footer {
  background: #060606;
  padding: 96px 0 28px;
  border-top: 1px solid var(--border);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 56px;
  padding-bottom: 64px;
  border-bottom: 1px solid var(--border);
}
.footer-brand .logo { margin-bottom: 28px; }
.footer-brand .logo img { height: 80px; }

.footer h4 {
  font-family: var(--display);
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--fg-muted);
  margin-bottom: 22px;
}
.footer ul { list-style: none; }
.footer li {
  padding: 6px 0;
  color: var(--fg-dim);
  font-size: 14px;
  line-height: 1.5;
}
.footer a {
  color: var(--fg-dim);
  font-size: 14px;
  text-decoration: none;
  transition: color 0.2s;
}
.footer a:hover { color: var(--fg); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 28px;
  flex-wrap: wrap;
  gap: 24px 32px;
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--fg-muted);
}
.footer-bottom .legal {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.footer-bottom .legal .copy { color: var(--fg-muted); }
.footer-bottom .legal a {
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--fg-muted);
  text-transform: none;
}
.footer-bottom .legal a:hover { color: var(--fg); }

.socials { display: flex; gap: 12px; align-items: center; }
.socials a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--fg-dim);
  transition: color 0.2s, border-color 0.2s, background 0.2s, transform 0.2s;
}
.socials a svg { width: 15px; height: 15px; display: block; }
.socials a:hover {
  color: var(--fg);
  border-color: var(--border-strong);
  background: var(--bg-elev);
  transform: translateY(-2px);
}

/* ========== reduced motion ========== */
@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal-mask > span {
    transition: none !important;
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}

/* ========== responsive ========== */
@media (max-width: 980px) {
  .nav-links { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .section { padding: 80px 0; }
  /* mobile: skip the scroll-triggered reveal animations entirely */
  .js .reveal:not([data-on-load]) {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .js .reveal-mask:not([data-on-load]) > span {
    transform: none !important;
    transition: none !important;
  }
}
@media (max-width: 640px) {
  .logo img { height: 36px; }
  .nav-inner { padding: 18px 20px; }
}
@media (max-width: 560px) {
  .container { padding: 0 20px; }
  .nav-inner { padding: 16px 18px; }
  .logo img { height: 32px; }
  .footer-grid { grid-template-columns: 1fr; }
}