/*
 * Copyright (c) 2026 Costas Kirgoussios
 *
 * This software is licensed under the PolyForm Noncommercial License 1.0.0.
 * You may obtain a copy of the License at:
 * https://polyformproject.org/licenses/noncommercial/1.0.0/
 */

/*
 * Agent Profile Design System
 * Deep midnight navy, amber/cyan neon accents, terminal-first aesthetics.
 * Fonts are vendored (OFL), so zero network requests leave this origin.
 */

@font-face {
  font-family: "Space Grotesk";
  src: url("fonts/SpaceGrotesk%5Bwght%5D.woff2") format("woff2");
  font-weight: 300 700;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("fonts/JetBrainsMono-Regular.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("fonts/JetBrainsMono-SemiBold.woff2") format("woff2");
  font-weight: 600;
  font-display: swap;
}

:root {
  --bg: #020713;
  --bg-mid: #052b70;
  --bg-deep: #001333;
  --panel: rgba(5, 43, 112, 0.35);
  --term: #070b14;
  --line: #27304a;
  --text: #eaf2ff;
  --soft: #b8bfcf;
  --muted: #9db3d6;
  --amber: #ffb040;
  --amber-soft: #ffd58a;
  --driver: #ff7a18;
  --driver-soft: #ffb040;
  --cyan: #00cfff;
  --cyan-soft: #00eaff;
  --peer: #00cfff;
  --peer-soft: #00eaff;
  --ok: #7ce7b0;
  --danger: #ff5f56;
  --mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --sans: "Space Grotesk", system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html {
  color-scheme: dark;
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.6;
  background: var(--bg) linear-gradient(180deg, var(--bg) 0%, var(--bg-deep) 60%, var(--bg) 100%) fixed;
  overflow-wrap: anywhere;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--amber); text-underline-offset: 3px; text-decoration: none; transition: color 0.15s ease; }
a:hover { color: var(--amber-soft); text-decoration: underline; }

:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip {
  position: absolute;
  left: -999px;
  top: 0.5rem;
  background: var(--term);
  color: var(--text);
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--amber);
  z-index: 200;
}
.skip:focus { left: 0.5rem; }

.wrap, main, .top, .foot {
  width: min(1120px, 100% - 2rem);
  margin-inline: auto;
}

/* Global Sticky Navigation */
.site-nav {
  background: rgba(2, 7, 19, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
  text-decoration: none;
  font-family: var(--sans);
}
.nav-brand:hover { text-decoration: none; }
.nav-brand img { width: 28px; height: 28px; filter: drop-shadow(0 0 6px rgba(0, 207, 255, 0.4)); }
.nav-brand span { letter-spacing: -0.01em; }

.nav-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}
.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.15s ease;
}
.nav-links a:hover, .nav-links a[aria-current="page"] {
  color: var(--text);
  text-decoration: none;
}
.nav-links a[aria-current="page"] {
  border-bottom: 2px solid var(--amber);
  padding-bottom: 0.2rem;
}

.cta {
  display: inline-block;
  padding: 0.65rem 1.4rem;
  font-weight: 700;
  font-size: 1rem;
  color: #020713 !important;
  background: linear-gradient(90deg, var(--amber), var(--driver));
  border-radius: 999px;
  text-decoration: none !important;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  box-shadow: 0 4px 16px rgba(255, 176, 64, 0.25);
}
.cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 176, 64, 0.4);
}
.nav-cta { padding: 0.45rem 1.1rem; font-size: 0.88rem; }

.cta-secondary {
  display: inline-block;
  padding: 0.6rem 1.3rem;
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 999px;
  text-decoration: none !important;
  transition: border-color 0.15s, transform 0.15s;
}
.cta-secondary:hover {
  border-color: var(--cyan);
  color: var(--text);
  transform: translateY(-2px);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; margin: 1.75rem 0 2rem; }

/* Breadcrumbs */
.breadcrumb {
  margin: 1.5rem 0 0.5rem;
  font-size: 0.9rem;
  color: var(--muted);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--amber); text-decoration: underline; }
.breadcrumb span { margin: 0 0.4rem; color: var(--line); }

/* Hero Section */
.hero { padding: 2.5rem 0 2rem; }
.banner {
  width: 100%;
  border-radius: 0.8rem;
  border: 1px solid var(--line);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  margin-bottom: 2rem;
}

h1 {
  margin: 0 0 1rem;
  font-size: clamp(2.2rem, 5.5vw, 3.4rem);
  line-height: 1.05;
  letter-spacing: -0.025em;
  font-weight: 700;
}
.lead {
  margin: 0 0 1rem;
  max-width: 65ch;
  font-size: 1.2rem;
  color: var(--soft);
  line-height: 1.5;
}
.subline { font-size: 1.15rem; color: var(--muted); margin: 0 0 1.5rem; }
.try { margin: 0 0 1.25rem; color: var(--amber); font-weight: 600; }

/* 6-Stage Architecture Pipeline */
.stages {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}
.stages li {
  padding: 0.75rem 0.95rem;
  border-radius: 0.6rem;
  border: 2px solid;
  background: var(--panel);
  display: flex;
  flex-direction: column;
  position: relative;
}
.stages .driver, .card.driver { border-color: var(--amber); }
.stages .peer, .card.peer { border-color: var(--cyan); }
.stage { font-weight: 700; font-size: 0.95rem; }
.driver .role { color: var(--amber-soft); }
.peer .role { color: var(--cyan-soft); }
.role { font-size: 0.82rem; margin: 0.15rem 0 0.25rem; }
.stages code { align-self: flex-start; margin-top: 0.25rem; font-size: 0.75rem; }

.stages li:not(:last-child)::after {
  content: "\2193" / "";
  position: absolute;
  left: 50%;
  bottom: -0.95rem;
  transform: translateX(-50%);
  color: var(--cyan-soft);
  font-weight: 700;
  line-height: 1;
}

@media (min-width: 640px) {
  .stages { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.4rem 1.6rem; }
  .stages li:not(:last-child)::after {
    content: "\2192" / "";
    left: auto;
    right: -1.15rem;
    bottom: auto;
    top: 50%;
    transform: translateY(-50%);
  }
  .stages li:nth-child(3n)::after { display: none; }
}
@media (min-width: 990px) {
  .stages { grid-template-columns: repeat(6, 1fr); }
  .stages li:nth-child(3n):not(:last-child)::after { display: block; }
}

.legend { color: var(--muted); font-size: 0.92rem; margin: 0 0 2rem; }

/* Deck & Terminal Simulator */
.deck {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 1.5rem;
  align-items: start;
  margin: 2rem 0;
}

.term {
  min-width: 0;
  background: var(--term);
  border: 1px solid var(--line);
  color: var(--amber-soft);
  border-radius: 0.6rem;
  overflow: hidden;
  box-shadow: 0 0 0 1px rgba(255, 176, 64, 0.08), 0 30px 60px rgba(0, 0, 0, 0.5), 0 0 80px rgba(255, 176, 64, 0.1);
}

.bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem 1rem;
  padding: 0.45rem 0.85rem;
  border-bottom: 1px solid var(--line);
  background: #001333;
  color: var(--muted);
  font-size: 0.82rem;
}
.bar .checked { margin-left: auto; color: var(--ok); font-weight: 600; font-size: 0.78rem; }
.bar .title { font-family: var(--mono); color: var(--cyan); }

.tabs { display: flex; flex-wrap: wrap; gap: 0.25rem; }
.tabs[hidden] { display: none; }
.tabs button {
  appearance: none;
  background: none;
  border: 0;
  border-bottom: 2px solid transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.85rem;
  padding: 0.4rem 0.55rem;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}
.tabs button:hover { color: var(--text); }
.tabs button[aria-selected="true"] { color: var(--amber); border-bottom-color: var(--amber); font-weight: 600; }

.panel { margin: 0; padding: 0.75rem 0.75rem 0; }
.panel[hidden] { display: none; }
.panel figcaption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.5rem;
  color: var(--muted);
  font-size: 0.85rem;
}
.js .panel figcaption { justify-content: flex-end; }
.js .panel figcaption .label { display: none; }

pre {
  margin: 0;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.82rem;
  line-height: 1.6;
  white-space: pre;
}
.snippet { padding: 0.25rem 0 1rem; color: var(--amber-soft); }
#demo { padding: 0.75rem 0.75rem 0.25rem; color: var(--amber-soft); }

.copy {
  appearance: none;
  background: transparent;
  color: var(--amber);
  border: 1px solid var(--amber);
  font: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.2rem 0.7rem;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.copy[hidden] { display: none; }
.copy:hover { background: rgba(255, 176, 64, 0.15); }
.copy.done { color: var(--ok); border-color: var(--ok); }

.disclose, .caption {
  margin: 0;
  padding: 0.75rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.85rem;
}
.caption { border-top: 0; padding-top: 0.25rem; padding-bottom: 0.25rem; }
.promptline { margin: 0; padding: 0 0.75rem 0.75rem; font-family: var(--mono); font-size: 0.82rem; }
.promptline .p { color: var(--amber); font-weight: 700; }
.cursor {
  display: inline-block;
  width: 0.55em;
  height: 1.05em;
  vertical-align: text-bottom;
  background: var(--amber);
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* Value Propositions Grid */
.value-grid {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
  margin: 2.5rem 0;
}
@media (min-width: 768px) { .value-grid { grid-template-columns: repeat(3, 1fr); } }
.value-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  padding: 1.5rem;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.value-card:hover { border-color: var(--cyan); transform: translateY(-2px); }
.value-card h3 { font-size: 1.25rem; color: var(--text); margin: 0 0 0.6rem; }
.value-card p { font-size: 0.95rem; color: var(--muted); margin: 0; line-height: 1.55; }
.value-card .tag { display: inline-block; margin-bottom: 0.6rem; }

/* Cards & Badges */
.cards {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
  margin: 1.5rem 0;
}
@media (min-width: 640px) { .cards { grid-template-columns: repeat(2, 1fr); } }
.card {
  border: 2px solid var(--line);
  border-radius: 0.8rem;
  padding: 1.3rem;
  background: var(--panel);
}
.card h3 { margin: 0 0 0.35rem; font-size: 1.2rem; }
.card p { margin: 0.35rem 0; color: var(--soft); }
.tag {
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
}

.badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.3rem;
}
.badge-proven { background: rgba(124, 231, 176, 0.15); color: var(--ok); border: 1px solid var(--ok); }
.badge-experimental { background: rgba(255, 176, 64, 0.15); color: var(--amber); border: 1px solid var(--amber); }
.badge-unmeasured { background: rgba(157, 179, 214, 0.15); color: var(--muted); border: 1px solid var(--line); }

/* Tables */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.75rem 0;
  font-size: 0.92rem;
}
.spec-table th, .spec-table td {
  padding: 0.8rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--line);
}
.spec-table th {
  background: var(--bg-deep);
  color: var(--muted);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.spec-table tr:hover td { background: rgba(5, 43, 112, 0.2); }

/* Strip & Details */
.strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 2rem;
  padding: 2.5rem 0;
  border-top: 1px solid var(--line);
}
.col { min-width: 0; }
h2 {
  margin: 2.5rem 0 1rem;
  font-size: 1.55rem;
  letter-spacing: -0.015em;
  border-bottom: 2px solid var(--bg-mid);
  padding-bottom: 0.5rem;
}
.strip h2 { margin-top: 0; border-bottom: 0; padding-bottom: 0; }
.col p { margin: 0 0 0.75rem; color: var(--soft); }
.os { margin-bottom: 0.25rem; color: var(--muted); font-size: 0.85rem; font-weight: 600; }
.cmd {
  margin-bottom: 0.75rem;
  padding: 0.65rem 0.85rem;
  background: var(--term);
  border: 1px solid var(--line);
  color: var(--amber-soft);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  border-radius: 4px;
}
.note {
  font-size: 0.9rem;
  padding: 0.6rem 0.9rem;
  border-left: 4px solid var(--amber);
  background: var(--panel);
  border-radius: 0 0.5rem 0.5rem 0;
  margin: 0.75rem 0;
}
code {
  font-family: var(--mono);
  font-size: 0.88em;
  color: var(--amber-soft);
  background: var(--bg-deep);
  padding: 0.1em 0.35em;
  border-radius: 3px;
  overflow-wrap: anywhere;
}
.dl, .never { margin: 0 0 0.75rem; padding: 0; list-style: none; }
.dl li, .never li { padding: 0.45rem 0; border-bottom: 1px solid #1e2538; color: var(--soft); }
.dl li span { display: inline-block; min-width: 10.5rem; color: var(--text); font-weight: 500; }
.dl li a { margin-right: 0.75rem; }

/* Clavity Band */
.band {
  margin: 2rem 0 3rem;
  padding: 1.75rem;
  background: #04122d;
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}
.band h2 { margin-top: 0; border-bottom: 0; padding-bottom: 0; font-size: 1.35rem; }
.band p { margin: 0 0 0.85rem; max-width: 75ch; color: var(--soft); }
.band p:last-child { margin-bottom: 0; }
.band a { margin-right: 1.25rem; font-weight: 600; }

/* Footer */
footer {
  margin-top: 4rem;
  padding: 2.5rem 0;
  border-top: 2px solid var(--bg-mid);
  background: var(--bg-deep);
}
.footer-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  align-items: flex-start;
}
.footer-grid img { border-radius: 8px; flex: none; filter: drop-shadow(0 0 8px rgba(0, 207, 255, 0.3)); }
.footer-grid > div { flex: 1 1 18rem; }
.foot-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.25rem;
  margin: 0.75rem 0;
}
.foot-nav a { color: var(--muted); text-decoration: none; font-size: 0.95rem; }
.foot-nav a:hover { color: var(--text); text-decoration: underline; }
.fine { color: var(--muted); font-size: 0.82rem; line-height: 1.5; margin-top: 0.75rem; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 880px) {
  .deck { grid-template-columns: minmax(0, 1fr); }
  .strip { grid-template-columns: minmax(0, 1fr); gap: 1.75rem; }
  .nav-links { gap: 0.85rem; }
}

@media (max-width: 480px) {
  .hero { padding-top: 1.5rem; }
  .dl li span { display: block; min-width: 0; margin-bottom: 0.2rem; }
  .nav-wrap { flex-direction: column; align-items: flex-start; }
  .nav-cta { align-self: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}