/* ===========================================================
   Ellis Programming styles
   Sleek dark & modern · self-contained static site
   =========================================================== */

:root {
  /* Surfaces */
  --bg:        #0A0B0E;
  --bg-elev:   #121419;
  --bg-elev-2: #171A21;
  --border:    rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);

  /* Text */
  --text:      #E7E9EE;
  --text-dim:  #9AA1AD;
  --text-faint:#626a78;

  /* Accent */
  --accent:    #22D3EE;
  --accent-2:  #8B5CF6;
  --grad:      linear-gradient(135deg, #22D3EE 0%, #6366F1 55%, #8B5CF6 100%);
  --grad-soft: linear-gradient(135deg, rgba(34,211,238,0.16), rgba(139,92,246,0.16));

  /* Type */
  --font-display: "Space Grotesk", "Segoe UI", system-ui, sans-serif;
  --font-body:    "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;

  /* Layout */
  --maxw: 1140px;
  --radius: 16px;
  --radius-sm: 10px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ----------------------------- reset ----------------------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; padding: 0; }
button { font: inherit; cursor: pointer; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  background: var(--accent); color: #04121a; padding: 10px 16px;
  border-radius: 0 0 8px 0; font-weight: 600;
}
.skip-link:focus { left: 0; }

/* ----------------------------- layout ---------------------------- */
.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: 24px; }

.section { padding-block: clamp(72px, 11vw, 132px); position: relative; }
.section-alt { background: linear-gradient(180deg, rgba(255,255,255,0.015), rgba(255,255,255,0)); }
.section-alt::before, .section-alt::after {
  content: ""; position: absolute; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}
.section-alt::before { top: 0; }
.section-alt::after { bottom: 0; }

.section-head { max-width: 660px; margin-bottom: clamp(40px, 6vw, 64px); }
.section-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.9rem, 4.2vw, 3rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
}
.section-lead { color: var(--text-dim); margin-top: 18px; font-size: clamp(1rem, 1.6vw, 1.18rem); }

.eyebrow {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 16px;
}

.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ----------------------------- buttons --------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.98rem;
  padding: 14px 26px;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease),
              background 0.25s var(--ease), border-color 0.25s var(--ease);
  white-space: nowrap;
}
.btn-sm { padding: 9px 18px; font-size: 0.9rem; }
.btn-block { width: 100%; }
.btn-primary {
  background: var(--grad);
  color: #05121a;
  box-shadow: 0 8px 30px -12px rgba(34, 211, 238, 0.6);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 40px -12px rgba(99, 102, 241, 0.7); }
.btn-ghost {
  background: rgba(255, 255, 255, 0.03);
  border-color: var(--border-strong);
  color: var(--text);
}
.btn-ghost:hover { transform: translateY(-2px); border-color: var(--accent); background: rgba(255,255,255,0.06); }

/* ----------------------------- header ---------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  backdrop-filter: blur(12px);
  background: rgba(10, 11, 14, 0.55);
  border-bottom: 1px solid transparent;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease);
}
.site-header.scrolled { background: rgba(10, 11, 14, 0.88); border-bottom-color: var(--border); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }

.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-mark {
  display: grid; place-items: center;
  width: 38px; height: 38px; border-radius: 11px;
  font-family: var(--font-display); font-weight: 700; font-size: 0.95rem;
  color: #05121a; background: var(--grad);
  box-shadow: 0 6px 20px -8px rgba(99, 102, 241, 0.7);
}
.brand-name { font-family: var(--font-display); font-weight: 600; font-size: 1.12rem; letter-spacing: -0.01em; }
.brand-name-accent { color: var(--text-dim); font-weight: 500; margin-left: 4px; }

.nav { display: flex; align-items: center; }
.nav-menu { display: flex; align-items: center; gap: 30px; }
.nav-menu a { color: var(--text-dim); font-size: 0.96rem; font-weight: 500; transition: color 0.2s ease; }
.nav-menu a:hover { color: var(--text); }
.nav-cta a { color: #05121a; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; width: 42px; height: 42px;
  align-items: center; justify-content: center; background: transparent; border: 1px solid var(--border); border-radius: 10px; }
.nav-toggle span { width: 20px; height: 2px; background: var(--text); border-radius: 2px; transition: transform 0.3s var(--ease), opacity 0.2s ease; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ----------------------------- hero ------------------------------ */
.hero { position: relative; padding-block: clamp(90px, 16vw, 180px); overflow: hidden; }
.hero-bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
.hero-grid {
  position: absolute; inset: -2px;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 75%);
}
.hero-glow { position: absolute; border-radius: 50%; filter: blur(90px); opacity: 0.5; }
.hero-glow-1 { width: 540px; height: 540px; top: -180px; left: -120px;
  background: radial-gradient(circle, rgba(34,211,238,0.5), transparent 65%); }
.hero-glow-2 { width: 520px; height: 520px; top: -120px; right: -140px;
  background: radial-gradient(circle, rgba(139,92,246,0.45), transparent 65%); }

.hero-inner { position: relative; z-index: 1; max-width: 880px; }
.hero-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.4rem, 6.4vw, 4.6rem);
  line-height: 1.04;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}
.hero-sub { color: var(--text-dim); font-size: clamp(1.05rem, 1.9vw, 1.3rem); max-width: 640px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }

.hero-proof {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
  margin-top: 64px; padding-top: 36px;
  border-top: 1px solid var(--border);
  max-width: 760px;
}
.hero-proof li { display: flex; flex-direction: column; gap: 4px; }
.hero-proof strong { font-family: var(--font-display); font-size: 1.18rem; font-weight: 600; }
.hero-proof span { color: var(--text-faint); font-size: 0.86rem; }

/* ----------------------------- capabilities ---------------------- */
.cap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.cap-card {
  position: relative;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 34px 30px;
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease), background 0.3s var(--ease);
}
.cap-card::before {
  content: ""; position: absolute; inset: 0; border-radius: var(--radius);
  padding: 1px; background: var(--grad);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0; transition: opacity 0.3s ease;
}
.cap-card:hover { transform: translateY(-5px); background: var(--bg-elev-2); }
.cap-card:hover::before { opacity: 1; }
.cap-card-feature { background: var(--bg-elev-2); }
.cap-card-feature::before { opacity: 0.6; }

.cap-icon {
  width: 50px; height: 50px; border-radius: 13px; display: grid; place-items: center;
  background: var(--grad-soft); color: var(--accent); margin-bottom: 22px;
  border: 1px solid var(--border);
}
.cap-icon svg { width: 24px; height: 24px; }
.cap-card h3 { font-family: var(--font-display); font-size: 1.32rem; font-weight: 600; letter-spacing: -0.01em; }
.cap-card p { color: var(--text-dim); margin-top: 12px; font-size: 0.98rem; }
.cap-list { margin-top: 20px; display: flex; flex-direction: column; gap: 10px; }
.cap-list li { position: relative; padding-left: 22px; color: var(--text); font-size: 0.94rem; }
.cap-list li::before {
  content: ""; position: absolute; left: 0; top: 9px; width: 7px; height: 7px;
  border-radius: 2px; background: var(--grad);
}

/* ----------------------------- work ------------------------------ */
.work-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.work-card {
  display: flex; flex-direction: column;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}
.work-card:hover { transform: translateY(-5px); border-color: var(--border-strong); }
.work-shot {
  width: 100%; aspect-ratio: 16 / 9; object-fit: cover; display: block;
  background: var(--bg-elev-2); border-bottom: 1px solid var(--border);
}
.work-shot[src*="rcBuggy"] { object-position: center 30%; }
.work-tile {
  position: relative; aspect-ratio: 16 / 9; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--tile-a), var(--tile-b));
  overflow: hidden;
}
.work-tile::after {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(circle at 1px 1px, rgba(255,255,255,0.18) 1px, transparent 0);
  background-size: 18px 18px; mix-blend-mode: overlay;
}
.work-tile span {
  font-family: var(--font-display); font-weight: 700; font-size: 2.4rem; letter-spacing: -0.02em;
  color: rgba(10, 11, 14, 0.82); position: relative; z-index: 1;
}
.work-body { padding: 24px 24px 28px; display: flex; flex-direction: column; flex: 1; }
.work-meta { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.tag {
  font-family: var(--font-display); font-size: 0.72rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.06em;
  padding: 5px 11px; border-radius: 999px;
  background: rgba(255,255,255,0.05); border: 1px solid var(--border); color: var(--text-dim);
}
.work-card h3 { font-family: var(--font-display); font-size: 1.24rem; font-weight: 600; letter-spacing: -0.01em; }
.work-body p { color: var(--text-dim); margin-top: 10px; font-size: 0.96rem; }
.work-metric {
  margin-top: auto; padding-top: 18px;
  font-family: var(--font-display); font-weight: 600; font-size: 0.9rem;
  color: var(--accent) !important;
}

/* ----------------------------- approach -------------------------- */
.approach-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.approach-card {
  position: relative; padding: 32px 30px;
  background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius);
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}
.approach-card:hover { transform: translateY(-4px); border-color: var(--border-strong); }
.approach-num {
  font-family: var(--font-display); font-weight: 700; font-size: 1rem;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
  letter-spacing: 0.05em;
}
.approach-card h3 { font-family: var(--font-display); font-size: 1.3rem; font-weight: 600; margin-top: 14px; letter-spacing: -0.01em; }
.approach-card p { color: var(--text-dim); margin-top: 12px; }

/* ----------------------------- studio ---------------------------- */
.studio-inner { display: grid; grid-template-columns: 1.4fr 1fr; gap: 56px; align-items: center; }
.studio-copy p { color: var(--text-dim); margin-top: 18px; font-size: 1.05rem; }
.studio-copy strong { color: var(--text); }
.studio-tech { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 28px; }
.studio-tech span {
  font-family: var(--font-display); font-size: 0.82rem; font-weight: 500;
  padding: 7px 14px; border-radius: 999px;
  border: 1px solid var(--border); background: rgba(255,255,255,0.03); color: var(--text-dim);
}
.studio-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.stat {
  background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px 22px;
}
.stat strong {
  font-family: var(--font-display); font-weight: 700; font-size: 2.3rem; line-height: 1;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stat span { display: block; color: var(--text-dim); margin-top: 10px; font-size: 0.9rem; }

/* ----------------------------- contact --------------------------- */
.section-contact { position: relative; overflow: hidden; }
.section-contact::before {
  content: ""; position: absolute; width: 700px; height: 700px; border-radius: 50%;
  bottom: -420px; left: 50%; transform: translateX(-50%); filter: blur(110px);
  background: radial-gradient(circle, rgba(99,102,241,0.28), transparent 65%); z-index: 0;
}
.contact-inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.contact-direct { margin-top: 24px; color: var(--text-dim); }
.contact-direct a { color: var(--accent); font-weight: 500; border-bottom: 1px solid transparent; transition: border-color 0.2s ease; }
.contact-direct a:hover { border-bottom-color: var(--accent); }

.contact-form {
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px;
  display: flex; flex-direction: column; gap: 18px;
}
.field { display: flex; flex-direction: column; gap: 8px; }
.field label { font-family: var(--font-display); font-size: 0.88rem; font-weight: 500; color: var(--text-dim); }
.field input, .field textarea {
  font-family: var(--font-body); font-size: 1rem; color: var(--text);
  background: var(--bg); border: 1px solid var(--border-strong); border-radius: var(--radius-sm);
  padding: 13px 15px; resize: vertical; transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.field input:focus, .field textarea:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.15);
}
.form-note { font-size: 0.9rem; color: var(--text-dim); min-height: 1.2em; text-align: center; }
.form-note.success { color: #34D399; }
.form-note.error { color: #F87171; }

/* ----------------------------- footer ---------------------------- */
.site-footer { border-top: 1px solid var(--border); padding-block: 48px 32px; background: var(--bg-elev); }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 30px; flex-wrap: wrap; }
.footer-tag { color: var(--text-faint); font-size: 0.88rem; margin-top: 12px; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 22px; }
.footer-nav a { color: var(--text-dim); font-size: 0.92rem; transition: color 0.2s ease; }
.footer-nav a:hover { color: var(--text); }
.footer-bottom {
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  margin-top: 36px; padding-top: 24px; border-top: 1px solid var(--border);
  color: var(--text-faint); font-size: 0.85rem;
}
.footer-heritage { font-family: var(--font-display); letter-spacing: 0.04em; }

/* ----------------------------- reveal anim ----------------------- */
/* Hidden initial state applies ONLY when JS is active (html.js), so visitors
   without JavaScript still see all content instead of a blank page. */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.js .reveal.is-visible { opacity: 1; transform: none; }

/* ----------------------------- responsive ------------------------ */
@media (max-width: 960px) {
  .cap-grid, .work-grid { grid-template-columns: repeat(2, 1fr); }
  .studio-inner, .contact-inner { grid-template-columns: 1fr; gap: 40px; }
  .cap-card-feature { grid-column: span 2; }
}

@media (max-width: 760px) {
  .nav-toggle { display: flex; }
  .nav-menu {
    position: fixed; inset: 72px 0 auto 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: rgba(10, 11, 14, 0.97); backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 12px 24px 24px;
    transform: translateY(-12px); opacity: 0; pointer-events: none;
    transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
  }
  .nav-menu.open { transform: none; opacity: 1; pointer-events: auto; }
  .nav-menu li { padding: 6px 0; border-bottom: 1px solid var(--border); }
  .nav-menu li:last-child { border-bottom: none; padding-top: 16px; }
  .nav-cta a { display: inline-flex; }

  .cap-grid, .work-grid, .approach-grid { grid-template-columns: 1fr; }
  .cap-card-feature { grid-column: auto; }
  .hero-proof { grid-template-columns: repeat(2, 1fr); gap: 24px 16px; }
  .studio-stats { grid-template-columns: repeat(2, 1fr); }
  .footer-bottom { flex-direction: column; gap: 6px; }
  body { font-size: 16px; }
}

@media (max-width: 420px) {
  .hero-proof { grid-template-columns: 1fr; }
  .studio-stats { grid-template-columns: 1fr; }
}

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