/* ============================================================================
   PANOSYNTH — instrument-grade single page
   Palette: near-black ground, cold teal primary, signal amber for "active".
   Type: IBM Plex Mono (labels/telemetry) + Inter (body).
   ========================================================================= */

/* Attractor-density palette: midnight navy -> cerulean -> teal-cyan ->
   seafoam -> mint glow. Density reads as light; amber is detection-only. */
:root {
  --bg:        #04060D;
  --bg-raise:  #081020;
  --navy:      #185388;
  --cerulean:  #2F8BB7;
  --teal:      #61B6C6;
  --teal-dim:  #226A9E;
  --seafoam:   #97D0C6;
  --mint:      #CCEAD1;
  --glow:      #E6FFFD;
  --cream:     #F5F2E9;
  --amber:     #F5A524;
  --ink:       #C7D1D6;
  --ink-dim:   #76858E;
  --hairline:  rgba(97, 182, 198, 0.18);
  --hairline-2:rgba(199, 209, 214, 0.10);
  --mono:      'IBM Plex Mono', ui-monospace, monospace;
  --body:      'Inter', system-ui, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.mono { font-family: var(--mono); }

::selection { background: rgba(97, 182, 198, 0.25); }

a { color: var(--teal); }

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--teal); color: var(--bg);
  padding: 8px 16px; font-family: var(--mono); z-index: 200;
}
.skip-link:focus { left: 0; }

/* Subtle full-page grid: instrument table, not wallpaper */
body::before {
  content: '';
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(var(--hairline-2) 1px, transparent 1px),
    linear-gradient(90deg, var(--hairline-2) 1px, transparent 1px);
  background-size: 96px 96px;
  opacity: 0.35;
}

/* ===================== TOP BAR ===================== */
.topbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 28px;
  background: linear-gradient(to bottom, rgba(5, 7, 10, 0.92), rgba(5, 7, 10, 0.55) 70%, transparent);
  border-bottom: 1px solid var(--hairline);
  backdrop-filter: blur(6px);
}

.wordmark {
  font-family: var(--mono);
  font-weight: 600;
  letter-spacing: 0.42em;
  font-size: 15px;
  color: var(--ink);
  display: flex; align-items: center; gap: 12px;
}
.wordmark-tick {
  width: 9px; height: 9px;
  background: var(--teal);
  clip-path: polygon(0 0, 100% 50%, 0 100%);   /* tiny "scan" wedge */
}

.topbar-right { display: flex; align-items: center; gap: 22px; }


/* --- TRY PANOSYNTH: color-shifting CTA (attractor sweep) --- */
.cta-button {
  position: relative;
  font-family: var(--mono);
  font-size: 12px; font-weight: 600;
  letter-spacing: 0.28em;
  padding: 11px 22px;
  cursor: pointer;
  color: var(--bg);
  border: none;
  background: linear-gradient(110deg,
    var(--cerulean) 0%, var(--teal) 30%, var(--seafoam) 55%, var(--mint) 78%, var(--glow) 100%);
  background-size: 300% 100%;
  animation: cta-sweep 6s ease-in-out infinite;
  box-shadow: 0 0 18px rgba(97, 182, 198, 0.35);
  transition: box-shadow 0.3s ease;
}
.cta-button:hover, .cta-button:focus-visible {
  box-shadow: 0 0 30px rgba(204, 234, 209, 0.45);
}
.cta-button:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }

@keyframes cta-sweep {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* tracking-reticle border on hover */
.cta-corners {
  position: absolute; inset: -9px;
  pointer-events: none; opacity: 0;
  transition: opacity 0.25s, inset 0.25s;
}
.cta-button:hover .cta-corners,
.cta-button:focus-visible .cta-corners { opacity: 1; inset: -5px; }
.cta-corners::before, .cta-corners::after {
  content: ''; position: absolute; width: 10px; height: 10px;
  border: 1px solid var(--glow);
}
.cta-corners::before { top: 0; left: 0; border-right: none; border-bottom: none; }
.cta-corners::after  { bottom: 0; right: 0; border-left: none; border-top: none; }

/* ===================== HERO ===================== */
.hero {
  position: relative;
  height: 100svh;
  min-height: 560px;
  overflow: hidden;
  isolation: isolate;
}

#heroCanvas, .hero-still {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  z-index: 1;
}
.hero-still svg { width: 100%; height: 100%; display: block; }

/* HUD chrome */
.hero-hud { position: absolute; inset: 0; z-index: 4; pointer-events: none; }

.hud-corner {
  position: absolute; width: 26px; height: 26px;
  border: 1px solid var(--hairline);
}
.hud-corner.tl { top: 72px; left: 24px;  border-right: none; border-bottom: none; }
.hud-corner.tr { top: 72px; right: 24px; border-left: none;  border-bottom: none; }
.hud-corner.bl { bottom: 24px; left: 24px;  border-right: none; border-top: none; }
.hud-corner.br { bottom: 24px; right: 24px; border-left: none;  border-top: none; }

.hud-readout {
  position: absolute;
  display: flex; flex-direction: column; gap: 3px;
  font-size: 10.5px; letter-spacing: 0.18em;
  color: rgba(97, 182, 198, 0.7);
  text-shadow: 0 0 8px rgba(97, 182, 198, 0.3);
}
.hud-tl { top: 86px; left: 40px; }
.hud-tr { top: 86px; right: 40px; text-align: right; }
.hud-bl { bottom: 38px; left: 40px; }
.hud-tc {
  top: 86px; left: 50%; transform: translateX(-50%);
  text-align: center;
  font-size: 11.5px; letter-spacing: 0.34em;
  color: rgba(151, 208, 198, 0.92);
}
#sysStatus.alert {
  color: var(--amber);
  text-shadow: 0 0 10px rgba(245, 165, 36, 0.5);
  animation: alert-flicker 0.5s steps(2, end) infinite;
}
@keyframes alert-flicker {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.2; }
}

/* hero copy */
.hero-copy {
  position: absolute; z-index: 5;
  left: 0; right: 0; bottom: 12%;
  padding: 0 7vw;
  max-width: 980px;
}

.kicker {
  font-size: 11px; letter-spacing: 0.4em;
  color: var(--teal);
  margin-bottom: 18px;
}
.kicker::before { content: '— '; color: var(--ink-dim); }

.hero h1 {
  font-family: var(--mono);
  font-weight: 600;
  font-size: clamp(30px, 5.2vw, 64px);
  line-height: 1.08;
  letter-spacing: 0.04em;
  color: var(--cream);
  text-shadow: 0 2px 30px rgba(4, 6, 13, 0.9);
  margin-bottom: 20px;
}

.subhead {
  max-width: 560px;
  font-size: clamp(14px, 1.5vw, 17px);
  color: var(--ink);
  text-shadow: 0 1px 16px rgba(5, 7, 10, 0.95);
  margin-bottom: 30px;
}

.hero-actions { display: flex; align-items: center; gap: 28px; }

.hero-cta {
  display: inline-block;
  font-size: 12px; font-weight: 600; letter-spacing: 0.28em;
  color: var(--teal);
  text-decoration: none;
  padding: 12px 24px;
  border: 1px solid var(--teal);
  transition: background 0.25s, color 0.25s, box-shadow 0.25s;
}
.hero-cta:hover, .hero-cta:focus-visible {
  background: var(--teal); color: var(--bg);
  box-shadow: 0 0 24px rgba(97, 182, 198, 0.4);
}
.hero-cta:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }

.hero-hint { font-size: 10px; letter-spacing: 0.3em; color: var(--ink-dim); }

/* scanline + vignette film layers */
.scanlines {
  position: absolute; inset: 0; z-index: 3; pointer-events: none;
  background: repeating-linear-gradient(to bottom,
    transparent 0px, transparent 3px, rgba(0, 0, 0, 0.16) 4px);
  opacity: 0.45;
  mix-blend-mode: multiply;
}
.vignette {
  position: absolute; inset: 0; z-index: 3; pointer-events: none;
  background: radial-gradient(ellipse 90% 75% at 50% 45%,
    transparent 55%, rgba(2, 3, 5, 0.55) 100%);
}

/* projected 3D scene labels (CAM 01 / DRONE 02 / detection readout) */
.scene-labels {
  position: absolute; inset: 0; z-index: 2;
  pointer-events: none; overflow: hidden;
}
.scene-label {
  position: absolute; top: 0; left: 0;
  font-family: var(--mono);
  font-size: 9px; letter-spacing: 0.22em;
  white-space: nowrap;
  will-change: transform;
  color: rgba(97, 182, 198, 0.9);
  text-shadow: 0 0 6px rgba(97, 182, 198, 0.35);
}
.scene-label.cam::before, .scene-label.drone::before {
  content: '▾ '; opacity: 0.55;
}
.scene-label.drone { color: rgba(151, 208, 198, 0.95); }
.scene-label.det {
  color: #E8E4DA;
  letter-spacing: 0.14em;
  line-height: 1.65;
  background: rgba(4, 6, 13, 0.78);
  border: 1px solid rgba(245, 165, 36, 0.55);
  padding: 6px 10px;
  text-shadow: none;
  animation: det-flicker 1.1s linear infinite;
}
.scene-label.det b { color: var(--amber); font-weight: 600; }
/* hard, irregular amber flicker — alert cadence, not a soft pulse */
@keyframes det-flicker {
  0%, 100% { opacity: 1; }
  6%       { opacity: 0.2; }
  10%      { opacity: 1; }
  14%      { opacity: 0.45; }
  18%      { opacity: 1; }
  54%      { opacity: 1; }
  58%      { opacity: 0.3; }
  63%      { opacity: 1; }
}

/* loop-reset dip (masks the timeline rewind) */
.hero-dip {
  position: absolute; inset: 0; z-index: 6; pointer-events: none;
  background: var(--bg);
  opacity: 0;
  transition: opacity 0.5s ease;
}
.hero-dip.on { opacity: 0.92; transition: opacity 0.7s ease; }

/* atmospheric gradient wash over the 3D scene — radial "attractor glow"
   (navy core -> cerulean -> nothing), screen-blended so black stays black */
.hero-atmo {
  position: absolute; inset: 0; z-index: 2;
  pointer-events: none;
  mix-blend-mode: screen;
  background:
    radial-gradient(55% 32% at 50% 55%,
      rgba(47, 139, 183, 0.18), rgba(0, 19, 68, 0) 70%),
    linear-gradient(180deg,
      rgba(0, 19, 68, 0.30) 0%, rgba(0, 19, 68, 0) 38%,
      rgba(0, 19, 68, 0) 72%, rgba(2, 38, 91, 0.25) 100%);
}

/* ===================== SECTIONS ===================== */
.section {
  position: relative; z-index: 2;
  max-width: 1120px;
  margin: 0 auto;
  padding: 110px 7vw 90px;
}

.section-head {
  display: flex; align-items: center; gap: 18px;
  margin-bottom: 54px;
}
.section-index {
  font-size: 12px; color: var(--seafoam); letter-spacing: 0.2em;
}
.section-head h2 {
  font-size: 15px; font-weight: 600; letter-spacing: 0.42em;
  color: var(--ink);
}
.section-rule {
  flex: 1; height: 1px;
  background: linear-gradient(to right, var(--hairline), transparent);
}

/* scroll reveal */
.reveal {
  opacity: 0; transform: translateY(22px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: none; }

/* --- problem --- */
.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
}
.problem-stat {
  background: var(--bg);
  padding: 34px 28px 30px;
}
.stat-num {
  display: block;
  font-size: clamp(34px, 4vw, 52px);
  font-weight: 600;
  color: var(--seafoam);
  line-height: 1;
  margin-bottom: 8px;
}
.stat-label {
  display: block;
  font-size: 11px; letter-spacing: 0.3em;
  color: var(--ink-dim);
  margin-bottom: 16px;
}
.problem-stat p { font-size: 14.5px; color: var(--ink); }

.problem-verdict {
  margin-top: 42px;
  font-size: 12px; letter-spacing: 0.22em;
  color: var(--teal);
  border-left: 2px solid var(--teal);
  padding-left: 16px;
}

/* --- capability cards --- */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.card {
  position: relative;
  border: 1px solid var(--hairline);
  background: linear-gradient(160deg, var(--bg-raise), var(--bg) 65%);
  padding: 30px 26px 24px;
  transition: border-color 0.3s ease;
}
/* HUD frame notches on each card */
.card::before, .card::after {
  content: ''; position: absolute; width: 12px; height: 12px;
  border: 1px solid var(--teal); opacity: 0.6;
}
.card::before { top: -1px; left: -1px; border-right: none; border-bottom: none; }
.card::after  { bottom: -1px; right: -1px; border-left: none; border-top: none; }
.card:hover { border-color: rgba(97, 182, 198, 0.45); }

.card-tag {
  display: block;
  font-size: 10px; letter-spacing: 0.3em;
  color: var(--cerulean);
  margin-bottom: 18px;
}
.card h3 {
  font-size: 14px; font-weight: 600; letter-spacing: 0.18em;
  color: var(--cream);
  margin-bottom: 14px;
}
.card p { font-size: 14px; color: var(--ink); margin-bottom: 22px; }
.card-foot {
  font-size: 10.5px; letter-spacing: 0.24em;
  color: var(--teal-dim);
  border-top: 1px solid var(--hairline-2);
  display: block; padding-top: 12px;
}

/* --- access --- */
.section-access { padding-bottom: 130px; }
.access-inner {
  border: 1px solid var(--hairline);
  padding: 44px 40px;
  background: linear-gradient(180deg, var(--bg-raise), var(--bg));
}
.access-lede { max-width: 520px; margin-bottom: 28px; font-size: 15.5px; }

.access-form label {
  display: block;
  font-size: 10.5px; letter-spacing: 0.3em;
  color: var(--ink-dim);
  margin-bottom: 10px;
}
.access-row { display: flex; gap: 12px; flex-wrap: wrap; }
.access-row input {
  flex: 1; min-width: 220px;
  background: var(--bg);
  border: 1px solid var(--hairline);
  color: var(--ink);
  font-family: var(--mono); font-size: 13px;
  padding: 13px 16px;
  letter-spacing: 0.04em;
}
.access-row input::placeholder { color: #46535d; }
.access-row input:focus-visible {
  outline: none; border-color: var(--teal);
  box-shadow: 0 0 0 1px var(--teal), 0 0 18px rgba(97, 182, 198, 0.18);
}
.access-row button {
  background: transparent;
  border: 1px solid var(--teal);
  color: var(--teal);
  font-size: 12px; font-weight: 600; letter-spacing: 0.24em;
  padding: 13px 26px;
  cursor: pointer;
  transition: background 0.25s, color 0.25s;
}
.access-row button:hover, .access-row button:focus-visible {
  background: var(--teal); color: var(--bg);
}
.access-row button:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }

.form-note {
  min-height: 1.4em;
  margin-top: 14px;
  font-size: 11px; letter-spacing: 0.18em;
  color: var(--amber);
}
.form-note.ok { color: var(--teal); }

/* confirmed state hides the inputs, leaves the receipt line */
.access-form.done .access-row, .access-form.done label { display: none; }

/* ===================== FOOTER ===================== */
.footer {
  position: relative; z-index: 2;
  display: flex; flex-wrap: wrap; gap: 12px 36px;
  justify-content: space-between;
  padding: 26px 7vw 34px;
  border-top: 1px solid var(--hairline);
  font-size: 10.5px; letter-spacing: 0.2em;
  color: var(--ink-dim);
}
.footer a { color: var(--ink-dim); text-decoration: none; }
.footer a:hover, .footer a:focus-visible { color: var(--teal); }

/* ===================== MODAL ===================== */
.demo-modal {
  background: transparent;
  border: none;
  padding: 0;
  max-width: min(540px, calc(100vw - 32px));
  color: var(--ink);
}
.demo-modal::backdrop {
  background: rgba(3, 4, 6, 0.8);
  backdrop-filter: blur(3px);
}
.modal-frame {
  position: relative;
  background: var(--bg-raise);
  border: 1px solid var(--hairline);
  padding: 42px 38px 34px;
}
.modal-frame .hud-corner.tl { top: 8px; left: 8px; }
.modal-frame .hud-corner.tr { top: 8px; right: 8px; }
.modal-frame .hud-corner.bl { bottom: 8px; left: 8px; }
.modal-frame .hud-corner.br { bottom: 8px; right: 8px; }

.modal-tag {
  font-size: 10px; letter-spacing: 0.3em;
  color: var(--seafoam);
  margin-bottom: 14px;
}
.modal-frame h2 {
  font-size: 17px; font-weight: 600; letter-spacing: 0.16em;
  color: var(--cream);
  margin-bottom: 14px;
}
.modal-frame > p { font-size: 14px; margin-bottom: 24px; }

.modal-close {
  margin-top: 22px;
  background: none; border: none;
  color: var(--ink-dim);
  font-size: 10.5px; letter-spacing: 0.24em;
  cursor: pointer;
}
.modal-close:hover, .modal-close:focus-visible { color: var(--teal); }
.modal-close:focus-visible { outline: 1px solid var(--teal); outline-offset: 3px; }

.noscript-note { padding: 120px 7vw; }

/* shown only when the page is opened via file:// (modules blocked) */
.file-banner {
  position: absolute; top: 76px; left: 50%; transform: translateX(-50%);
  z-index: 7;
  font-size: 10.5px; letter-spacing: 0.2em;
  color: var(--amber);
  background: rgba(5, 7, 10, 0.85);
  border: 1px solid rgba(245, 165, 36, 0.4);
  padding: 8px 14px;
  white-space: nowrap; max-width: 92vw; overflow: hidden; text-overflow: ellipsis;
}

/* ===================== RESPONSIVE ===================== */
@media (max-width: 900px) {
  .problem-grid, .cards { grid-template-columns: 1fr; }
  .hud-tr { display: none; }
}
@media (max-width: 560px) {
  .topbar { padding: 12px 16px; }
  .wordmark { letter-spacing: 0.28em; font-size: 13px; }
  .cta-button { padding: 9px 14px; font-size: 11px; letter-spacing: 0.18em; }
  .hero-copy { bottom: 9%; }
  .scanlines { display: none; }            /* cheaper compositing on mobile */
  .hud-readout { font-size: 9px; }
  .hud-tc { font-size: 10px; width: max-content; }
  .access-inner { padding: 30px 22px; }
}

/* ===================== REDUCED MOTION ===================== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .cta-button { animation: none; background-position: 25% 50%; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .scene-label.det, #sysStatus.alert { animation: none; }
  .hero-dip { transition: none; }
  .scanlines { display: none; }
}