/* =============================================================================
   WhyPrompt — public marketing site
   ========================================================================== */

/* -------------------------------------------------------------- nav ------ */

.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 60;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  padding: 18px var(--gutter);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), padding var(--dur) var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.is-stuck {
  background: rgba(10,10,10,0.78);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
  padding-block: 12px;
}
.nav__brand { display: inline-flex; align-items: center; gap: 10px; }
.mark {
  width: 11px; height: 11px; border-radius: 2px;
  background: var(--lime);
  box-shadow: 0 0 18px rgba(198,244,50,0.45);
  flex: none;
}
.wordmark { font-family: var(--display); font-weight: 600; letter-spacing: -0.02em; font-size: 16px; }
.nav__links { display: flex; gap: 26px; font-size: 13.5px; color: var(--ink-2); }
.nav__links a { transition: color var(--dur-sm) var(--ease); }
.nav__links a:hover { color: var(--ink); }
.nav__right { display: flex; align-items: center; gap: 14px; }
.nav__login { font-size: 13.5px; color: var(--ink-2); }
.nav__login:hover { color: var(--ink); }

@media (max-width: 860px) {
  .nav__links { display: none; }
}

/* ------------------------------------------------------------- hero ------ */

.hero {
  position: relative;
  min-height: 100svh;
  display: flex; align-items: center;
  padding: 140px var(--gutter) 80px;
  overflow: hidden;
  isolation: isolate;
}
/* A slow, low-contrast grid: atmosphere, not decoration. */
.hero__grid {
  position: absolute; inset: -20%;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.045) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 70% 60% at 30% 40%, #000 20%, transparent 75%);
  animation: drift 42s linear infinite;
  z-index: -2;
}
@keyframes drift { to { transform: translate3d(64px, 64px, 0); } }

.hero__glow {
  position: absolute; z-index: -1;
  width: 46vmax; height: 46vmax;
  left: var(--gx, 30%); top: var(--gy, 45%);
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(198,244,50,0.10), transparent 62%);
  filter: blur(20px);
  pointer-events: none;
  transition: left 1.4s var(--ease), top 1.4s var(--ease);
}

.hero__inner { max-width: 1180px; width: 100%; margin: 0 auto; }
.hero__eyebrow { margin-bottom: 22px; color: var(--ink-2); }
.hero__title {
  font-size: clamp(46px, 9.5vw, 132px);
  line-height: 0.92;
  letter-spacing: -0.045em;
  max-width: 14ch;
  margin-bottom: 28px;
}
.hero__title .char { display: inline-block; will-change: transform, opacity; }
.hero__lede { font-size: clamp(16px, 1.7vw, 20px); color: var(--ink-2); max-width: 54ch; line-height: 1.55; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 14px; margin: 38px 0 60px; }

.hero__stats {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 24px; margin: 0; padding-top: 28px; border-top: 1px solid var(--line);
  max-width: 720px;
}
.hero__stats dt { margin-bottom: 6px; }
.hero__stats dd { margin: 0; font-family: var(--display); font-size: 20px; letter-spacing: -0.02em; }

/* The magnetic CTA follows the cursor a few pixels. Set by JS. */
.magnetic { will-change: transform; transition: transform 320ms var(--ease); }

/* ---------------------------------------------------------- sections ----- */

.section { padding: clamp(80px, 11vw, 150px) var(--gutter); max-width: 1320px; margin: 0 auto; }
.section--flush { max-width: none; padding-inline: 0; }
.section--flush .section__head { padding-inline: var(--gutter); max-width: 1320px; margin-inline: auto; }
.section--contact { max-width: 1100px; }

.section__head {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 16px 24px;
  margin-bottom: clamp(36px, 5vw, 64px);
  padding-bottom: 20px; border-bottom: 1px solid var(--line);
}
.section__head .label { flex: none; width: 130px; }
.section__head .h2 { flex: 1 1 320px; }
.section__more { font-size: 13.5px; color: var(--ink-2); transition: color var(--dur-sm) var(--ease); }
.section__more:hover { color: var(--lime); }

/* ------------------------------------------------------------ cards ------ */

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.card--spot {
  position: relative; background: var(--bg);
  padding: 28px 24px 34px; min-height: 210px;
  transition: background var(--dur) var(--ease);
  overflow: hidden;
}
/* Cursor spotlight — the glow tracks --mx/--my set by JS. */
.card--spot::before {
  content: ''; position: absolute; inset: 0; opacity: 0;
  background: radial-gradient(240px circle at var(--mx, 50%) var(--my, 50%), rgba(198,244,50,0.10), transparent 70%);
  transition: opacity var(--dur) var(--ease);
  pointer-events: none;
}
.card--spot:hover::before { opacity: 1; }
.card--spot:hover { background: var(--bg-2); }
.card__index { display: block; margin-bottom: 18px; color: var(--ink-3); }
.card__title { font-size: 20px; margin-bottom: 10px; letter-spacing: -0.02em; }
.card__copy { color: var(--ink-2); font-size: 14px; margin: 0; }

/* ------------------------------------------------------------- work ------ */

.work { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 18px; }
.work__tile { display: block; }
.work__media {
  position: relative; aspect-ratio: 16 / 10; overflow: hidden;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--surface);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.work__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 700ms var(--ease), filter var(--dur) var(--ease); filter: saturate(0.75); }
.work__tile:hover .work__media { border-color: var(--lime-line); box-shadow: 0 0 0 1px var(--lime-dim), 0 18px 50px -30px rgba(198,244,50,0.5); }
.work__tile:hover .work__media img { transform: scale(1.05); filter: saturate(1); }
.work__placeholder {
  position: absolute; inset: 0;
  background: repeating-linear-gradient(115deg, #131313 0 12px, #171717 12px 24px);
}
.work__meta { padding: 14px 2px 0; }
.work__title { font-size: 17px; margin-top: 4px; letter-spacing: -0.02em; }

/* ------------------------------------------------------------- rail ------ */

.rail { overflow-x: auto; scrollbar-width: thin; padding: 4px var(--gutter) 26px; -webkit-overflow-scrolling: touch; }
.rail__track { display: flex; gap: 18px; width: max-content; margin: 0 auto; }
.rail__card {
  width: min(78vw, 340px);
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--bg-2); padding: 26px 24px 30px;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.rail__card:hover { border-color: var(--line-strong); background: var(--surface); }
.rail__step { display: block; margin-bottom: 20px; color: var(--lime); }
.rail__title { font-size: 22px; margin-bottom: 10px; letter-spacing: -0.025em; }
.rail__copy { color: var(--ink-2); font-size: 14px; margin: 0; }

/* ---------------------------------------------------------- contact ------ */

.contact { display: grid; gap: 44px; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 900px) { .contact { grid-template-columns: 0.85fr 1.15fr; gap: 60px; } }
.contact__intro .h2 { margin: 12px 0 16px; }
.contact__form {
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--bg-2); padding: clamp(22px, 3vw, 34px);
}

/* ------------------------------------------------------------- foot ------ */

.foot { border-top: 1px solid var(--line); padding: 44px var(--gutter) 30px; }
.foot__inner {
  max-width: 1320px; margin: 0 auto;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 18px;
}
.foot__copy { color: var(--ink-3); font-size: 13px; margin: 0; }
.foot__links { display: flex; gap: 20px; font-size: 13.5px; color: var(--ink-2); }
.foot__links a:hover { color: var(--lime); }
.foot__legal { max-width: 1320px; margin: 26px auto 0; color: var(--ink-3); font-size: 12px; }

/* --------------------------------------------------------- portfolio ----- */

.pf-head { padding: 150px var(--gutter) 40px; max-width: 1320px; margin: 0 auto; }
.pf-head .h1 { margin: 14px 0 28px; max-width: 16ch; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  background: transparent; border: 1px solid var(--line);
  border-radius: 99px; padding: 7px 15px;
  font-family: var(--display); font-size: 12px; letter-spacing: 0.05em; text-transform: uppercase;
  color: var(--ink-2); cursor: pointer;
  transition: border-color var(--dur-sm) var(--ease), color var(--dur-sm) var(--ease), background var(--dur-sm) var(--ease);
}
.chip:hover { border-color: var(--line-strong); color: var(--ink); }
.chip.is-active { border-color: var(--lime); color: var(--lime); background: var(--lime-dim); }

.pf-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px; padding: 30px var(--gutter) 100px; max-width: 1320px; margin: 0 auto;
}
.pf-tile { transition: opacity var(--dur) var(--ease); }
.pf-tile[hidden] { display: none; }
.pf-tile__btn { display: block; width: 100%; text-align: left; background: none; border: 0; padding: 0; cursor: pointer; }
.pf-tile__btn[disabled] { cursor: default; }
.pf-tile__media {
  position: relative; display: block; aspect-ratio: 16 / 10; overflow: hidden;
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.pf-tile__media img { width: 100%; height: 100%; object-fit: cover; filter: saturate(0.72); transition: transform 700ms var(--ease), filter var(--dur) var(--ease); }
.pf-tile__btn:hover .pf-tile__media { border-color: var(--lime-line); box-shadow: 0 0 0 1px var(--lime-dim), 0 24px 60px -34px rgba(198,244,50,0.55); }
.pf-tile__btn:hover .pf-tile__media img { transform: scale(1.05); filter: saturate(1); }
.pf-tile__play {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  width: 52px; height: 52px; border-radius: 50%;
  border: 1px solid var(--lime-line); background: rgba(10,10,10,0.6);
  backdrop-filter: blur(6px);
  transition: background var(--dur-sm) var(--ease), transform var(--dur-sm) var(--ease);
}
.pf-tile__play::after {
  content: ''; position: absolute; left: 21px; top: 17px;
  border-left: 13px solid var(--lime); border-top: 9px solid transparent; border-bottom: 9px solid transparent;
}
.pf-tile__btn:hover .pf-tile__play { background: rgba(198,244,50,0.14); transform: translate(-50%,-50%) scale(1.06); }
.pf-tile__meta { display: block; padding: 14px 2px 0; }
.pf-tile__title { display: block; font-family: var(--display); font-size: 17px; letter-spacing: -0.02em; margin-top: 4px; }
.pf-tile__copy { display: block; color: var(--ink-3); font-size: 13px; margin-top: 6px; }

/* --------------------------------------------------------- lightbox ------ */

.lightbox { position: fixed; inset: 0; z-index: 200; display: grid; place-items: center; padding: 20px; }
.lightbox[hidden] { display: none; }
.lightbox__backdrop { position: absolute; inset: 0; background: rgba(5,5,5,0.9); backdrop-filter: blur(8px); }
.lightbox__panel { position: relative; width: min(1000px, 96vw); }
.lightbox__frame { position: relative; aspect-ratio: 16 / 9; background: #000; border: 1px solid var(--line-strong); border-radius: var(--radius); overflow: hidden; }
.lightbox__frame iframe { width: 100%; height: 100%; border: 0; }
.lightbox__frame.is-vertical { aspect-ratio: 9 / 16; max-height: 84vh; margin: 0 auto; width: auto; }
.lightbox__title { color: var(--ink-2); font-size: 14px; margin: 14px 2px 0; }
.lightbox__close {
  position: absolute; right: -4px; top: -46px;
  width: 36px; height: 36px; border-radius: 50%;
  background: transparent; border: 1px solid var(--line-strong); color: var(--ink);
  font-size: 20px; line-height: 1; cursor: pointer;
}
.lightbox__close:hover { border-color: var(--lime); color: var(--lime); }

/* ------------------------------------------------------------- auth ------ */

.auth { min-height: 100svh; display: grid; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 900px) { .auth { grid-template-columns: 1fr 1fr; } }
.auth__panel {
  display: flex; flex-direction: column; justify-content: center;
  padding: clamp(32px, 6vw, 80px); max-width: 520px; width: 100%; margin: 0 auto;
}
.auth__title { font-family: var(--display); font-size: 38px; letter-spacing: -0.035em; margin: 36px 0 10px; }
.auth__lede { color: var(--ink-2); font-size: 15px; margin: 0 0 28px; }
.auth__note { color: var(--ink-3); font-size: 12.5px; margin-top: 24px; }
.auth__side { display: none; position: relative; border-left: 1px solid var(--line); overflow: hidden; }
@media (min-width: 900px) { .auth__side { display: block; } }
.auth__grid {
  position: absolute; inset: -20%;
  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: 52px 52px;
  mask-image: radial-gradient(ellipse 60% 60% at 50% 50%, #000 10%, transparent 70%);
  animation: drift 42s linear infinite;
}

/* ------------------------------------------------------------ error ------ */

.errpage { min-height: 100svh; display: grid; place-content: center; text-align: center; padding: 40px var(--gutter); gap: 14px; }
.errpage .h1 { font-size: clamp(34px, 6vw, 64px); }
.errpage .lede { margin: 0 auto; }
.errpage__cta { display: flex; gap: 12px; justify-content: center; margin-top: 16px; flex-wrap: wrap; }