/* =========================================================
   DariusAI — landing page
   Dark app aesthetic, monospace accents, 5-panel reference vibe
   ========================================================= */

:root {
  --bg:           #0b0e15;
  --bg-elevated:  #131722;
  --bg-soft:      #0f1320;
  --bg-input:     #0a0d14;
  --border:       #232836;
  --border-soft:  #1c2030;
  --border-soft2: #1a1f2c;

  --text:         #e6e8ee;
  --text-soft:    #c4c8d3;
  --text-muted:   #8b91a3;
  --text-dim:     #5c6271;

  --accent:       #5b6cff;
  --accent-2:     #6f7fff;
  --accent-soft:  rgba(91,108,255,.16);

  --violet:       #a78bfa;
  --green:        #4ade80;
  --orange:       #fb923c;
  --pink:         #f472b6;
  --cyan:         #22d3ee;
  --yellow:       #fbbf24;
  --red:          #ef4444;

  --radius:       12px;
  --radius-sm:    8px;
  --radius-lg:    16px;
  --shadow:       0 1px 0 rgba(255,255,255,.04) inset, 0 20px 60px -20px rgba(0,0,0,.6);

  --font-sans:    "Inter", "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono:    "JetBrains Mono", "Cascadia Code", Consolas, "SFMono-Regular", ui-monospace, monospace;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }

a { color: inherit; text-decoration: none; }

.container {
  width: min(1200px, 92%);
  margin: 0 auto;
}

.grad {
  background: linear-gradient(90deg, #a78bfa 0%, #5b6cff 60%, #22d3ee 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--text-dim); vertical-align: middle; }
.dot--blue   { background: var(--accent); }
.dot--green  { background: var(--green); }
.dot--violet { background: var(--violet); }
.dot--orange { background: var(--orange); }
.dot--cyan   { background: var(--cyan); }
.dot--pink   { background: var(--pink); }
.dot--red    { background: var(--red); }
.dot--yellow { background: var(--yellow); }

/* =========================================================
   Window chrome (top bar)
   ========================================================= */
.chrome {
  position: sticky;
  top: 0;
  z-index: 50;
  background: linear-gradient(180deg, #11141d 0%, #0c0f17 100%);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
}
.chrome__inner {
  width: min(1280px, 96%);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 18px;
  height: 44px;
  padding: 0 4px;
}
.chrome__brand {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
}
.chrome__dot {
  width: 11px; height: 11px; border-radius: 50%;
  border: 1px solid rgba(255,255,255,.06);
}
.chrome__dot--red    { background: #ff5f57; }
.chrome__dot--yellow { background: #febc2e; }
.chrome__dot--green  { background: #28c840; }
.chrome__title { color: var(--text); font-weight: 600; }
.chrome__badge {
  background: rgba(91,108,255,.18);
  color: #b9c2ff;
  padding: 1px 7px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 500;
  border: 1px solid rgba(91,108,255,.35);
}
.chrome__menu {
  display: flex; gap: 4px;
  font-size: 13px;
  color: var(--text-muted);
  flex: 1;
  justify-content: center;
}
.chrome__menu a {
  padding: 4px 10px;
  border-radius: 6px;
  transition: color .15s, background .15s;
}
.chrome__menu a:hover { color: var(--text); background: rgba(255,255,255,.04); }
.chrome__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
}
.status-dot {
  display: inline-block;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px rgba(74,222,128,.7);
  margin-right: 6px;
  vertical-align: middle;
}

/* =========================================================
   Hero
   ========================================================= */
.hero {
  position: relative;
  padding: 96px 0 80px;
  border-bottom: 1px solid var(--border-soft);
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 600px 300px at 20% 0%, rgba(91,108,255,.12), transparent 60%),
    radial-gradient(ellipse 600px 300px at 80% 20%, rgba(167,139,250,.10), transparent 60%);
  pointer-events: none;
}
.hero__eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  padding: 5px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255,255,255,.02);
  margin: 0 0 24px;
}
.hero__eyebrow-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px rgba(74,222,128,.7);
}
.hero__title {
  font-size: clamp(34px, 5.2vw, 60px);
  line-height: 1.06;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
  max-width: 920px;
}
.hero__lede {
  font-size: clamp(15px, 1.6vw, 18px);
  color: var(--text-soft);
  max-width: 640px;
  margin: 0 0 32px;
}
.hero__cta {
  display: flex; flex-wrap: wrap; gap: 12px;
  margin-bottom: 32px;
}
.hero__meta {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
}
.hero__meta svg { vertical-align: -2px; opacity: .8; }

.hero__frame {
  position: absolute;
  right: -10%;
  top: 30%;
  width: 70%;
  height: 320px;
  pointer-events: none;
  opacity: .35;
  display: none;
}
@media (min-width: 1200px) { .hero__frame { display: block; } }
.frame__tab {
  position: absolute;
  width: 200px; height: 36px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px 8px 0 0;
  transform-origin: bottom right;
  transform: rotate(-8deg);
}
.frame__tab:nth-child(1) { top: 30px;  right: 40%; }
.frame__tab:nth-child(2) { top: 60px;  right: 30%; transform: rotate(-12deg); }
.frame__tab:nth-child(3) { top: 100px; right: 20%; transform: rotate(-16deg); }
.frame__tab:nth-child(4) { top: 150px; right: 10%; transform: rotate(-20deg); }

/* =========================================================
   Buttons
   ========================================================= */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 18px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 14px;
  font-family: var(--font-sans);
  border: 1px solid transparent;
  transition: transform .12s, background .12s, border-color .12s, box-shadow .12s;
  cursor: pointer;
  white-space: nowrap;
}
.btn--primary {
  background: var(--accent);
  color: #fff;
  border-color: rgba(255,255,255,.08);
  box-shadow: 0 6px 20px -6px rgba(91,108,255,.6);
}
.btn--primary:hover {
  background: var(--accent-2);
  transform: translateY(-1px);
  box-shadow: 0 10px 30px -8px rgba(91,108,255,.7);
}
.btn--ghost {
  background: rgba(255,255,255,.04);
  color: var(--text);
  border-color: var(--border);
}
.btn--ghost:hover {
  background: rgba(255,255,255,.07);
  border-color: var(--border-soft);
  transform: translateY(-1px);
}
.btn__chev { transition: transform .12s; }
.btn--ghost:hover .btn__chev { transform: translateX(2px); }

/* =========================================================
   Section heading
   ========================================================= */
.section-head {
  text-align: center;
  margin: 0 auto 48px;
  max-width: 720px;
}
.section-tag {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 14px;
}
.section-title {
  font-size: clamp(26px, 3.4vw, 38px);
  font-weight: 700;
  letter-spacing: -0.015em;
  margin: 0 0 14px;
}
.section-title--sm { font-size: clamp(20px, 2.4vw, 26px); text-align: left; }
.section-lede {
  color: var(--text-soft);
  font-size: 16px;
  margin: 0;
}
.section-head .section-lede { margin: 0 auto; }

/* =========================================================
   Features grid (5 panels)
   ========================================================= */
.features { padding: 96px 0; border-bottom: 1px solid var(--border-soft); }
.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 18px;
}
.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  display: flex; flex-direction: column;
  position: relative;
  overflow: hidden;
  transition: transform .15s, border-color .15s, box-shadow .15s;
}
.card::before {
  content: "";
  position: absolute; left: 0; right: 0; top: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.08), transparent);
}
.card:hover { transform: translateY(-2px); border-color: #2c3245; box-shadow: var(--shadow); }

.card__head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 10px;
}
.card__head h3 {
  font-size: 16px;
  font-weight: 600;
  margin: 0;
  letter-spacing: -0.01em;
  display: flex; align-items: center; gap: 8px;
}
.card__head h3::before {
  content: "▸";
  color: var(--accent);
  font-size: 12px;
}
.card__badge {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 500;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(255,255,255,.05);
  color: var(--text-muted);
  border: 1px solid var(--border);
  text-transform: lowercase;
}
.card__badge--blue   { background: rgba(91,108,255,.15);  color: #b9c2ff; border-color: rgba(91,108,255,.35); }
.card__badge--green  { background: rgba(74,222,128,.12);  color: #b6f5cb; border-color: rgba(74,222,128,.3); }
.card__badge--violet { background: rgba(167,139,250,.14); color: #d6c8ff; border-color: rgba(167,139,250,.32); }
.card__badge--orange { background: rgba(251,146,60,.14);  color: #ffd4ad; border-color: rgba(251,146,60,.3); }
.card__badge--cyan   { background: rgba(34,211,238,.14);  color: #b6f0fb; border-color: rgba(34,211,238,.3); }

.card__desc {
  font-size: 13.5px;
  color: var(--text-soft);
  margin: 0 0 16px;
}

.card__viz {
  background: var(--bg-input);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  padding: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-soft);
  margin-bottom: 14px;
  min-height: 120px;
  display: flex; flex-direction: column;
  gap: 6px;
  overflow: hidden;
}
.card__list {
  list-style: none;
  padding: 0; margin: 0;
  display: flex; flex-direction: column; gap: 6px;
  font-size: 13px;
  color: var(--text-muted);
}
.card__list li {
  padding-left: 18px;
  position: relative;
}
.card__list li::before {
  content: "+";
  position: absolute; left: 0; top: 0;
  color: var(--accent);
  font-family: var(--font-mono);
  font-weight: 700;
}

/* Grid placement — desktop: bento */
.card--neural   { grid-column: span 7; }
.card--chat     { grid-column: span 5; }
.card--editor   { grid-column: span 5; }
.card--console  { grid-column: span 4; }
.card--terminal { grid-column: span 3; }

@media (max-width: 900px) {
  .card { grid-column: span 12 !important; }
}

/* Per-panel visuals */
.card__viz--neural svg { width: 100%; height: auto; }
.card__viz--chat { gap: 8px; }
.bubble {
  border-radius: 10px;
  padding: 8px 11px;
  font-size: 12.5px;
  line-height: 1.5;
  max-width: 92%;
}
.bubble--you {
  background: rgba(91,108,255,.15);
  color: #cfd5ff;
  border: 1px solid rgba(91,108,255,.3);
  align-self: flex-end;
}
.bubble--ai {
  background: var(--bg-soft);
  color: var(--text-soft);
  border: 1px solid var(--border);
  align-self: flex-start;
}
.bubble .phase {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--text-dim);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.bubble code {
  font-family: var(--font-mono);
  font-size: 11.5px;
  background: rgba(255,255,255,.05);
  padding: 1px 5px;
  border-radius: 4px;
  color: #cfd5ff;
}
.chatbar {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 7px 10px;
  margin-top: 4px;
}
.chatbar__placeholder { color: var(--text-dim); font-size: 12px; }
.chatbar__send {
  background: var(--accent);
  color: #fff;
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 6px;
  font-weight: 600;
}

.code {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.55;
  color: var(--text-soft);
  white-space: pre;
  overflow: hidden;
}
.tok-com { color: #5c6271; }
.tok-kw  { color: #a78bfa; }
.tok-str { color: #4ade80; }
.tok-fn  { color: #5b6cff; }
.tok-cls { color: #22d3ee; }
.tok-num { color: #fb923c; }
.tok-pipe { color: var(--text-dim); }

.log { display: grid; grid-template-columns: 56px 70px 1fr; gap: 8px; font-size: 11.5px; }
.log__t { color: var(--text-dim); }
.log__k { font-weight: 600; }
.log__m { color: var(--text-soft); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.log__k--tool { color: #5b6cff; }
.log__k--node { color: #a78bfa; }
.log__k--turn { color: #4ade80; }

.term__line { font-size: 11.5px; color: var(--text-soft); }
.term__ps { color: #5b6cff; font-weight: 700; }
.term__path { color: var(--text-soft); margin-left: 6px; }
.term__line--out { color: var(--text-dim); padding: 2px 0 6px; }
.term__cursor {
  display: inline-block;
  background: var(--accent);
  width: 7px; height: 13px;
  vertical-align: -2px;
  margin-left: 2px;
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* =========================================================
   Screenshots
   ========================================================= */
.shots { padding: 96px 0; border-bottom: 1px solid var(--border-soft); background: var(--bg-soft); }
.shots__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.shot {
  margin: 0;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform .2s, border-color .2s;
}
.shot:hover { transform: translateY(-3px); border-color: #2c3245; }
.shot__bar {
  display: flex; align-items: center; gap: 6px;
  padding: 10px 14px;
  background: linear-gradient(180deg, #1a1f2c 0%, #131722 100%);
  border-bottom: 1px solid var(--border);
}
.shot__title {
  margin-left: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
}
.shot img {
  width: 100%;
  height: auto;
  display: block;
}
@media (max-width: 760px) {
  .shots__row { grid-template-columns: 1fr; }
}

/* =========================================================
   Install
   ========================================================= */
.install { padding: 96px 0; border-bottom: 1px solid var(--border-soft); }
.install__box {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 820px;
  margin: 0 auto 40px;
  box-shadow: var(--shadow);
}
.install__head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 14px;
  background: linear-gradient(180deg, #1a1f2c 0%, #131722 100%);
  border-bottom: 1px solid var(--border);
}
.install__label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
}
.copy-btn {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(255,255,255,.04);
  border: 1px solid var(--border);
  color: var(--text-soft);
  padding: 5px 10px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  cursor: pointer;
  transition: background .12s, color .12s, border-color .12s;
}
.copy-btn:hover { background: rgba(255,255,255,.07); color: var(--text); border-color: #2c3245; }
.copy-btn.is-copied { color: var(--green); border-color: rgba(74,222,128,.4); background: rgba(74,222,128,.08); }
.install__cmd {
  margin: 0;
  padding: 18px 20px;
  background: var(--bg-input);
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--text-soft);
  overflow-x: auto;
  white-space: pre;
}
.install__note {
  margin: 0;
  padding: 10px 20px;
  background: rgba(251,191,36,.04);
  border-top: 1px solid rgba(251,191,36,.15);
  font-size: 12.5px;
  color: #fde29a;
  font-family: var(--font-mono);
}

.install__steps {
  list-style: none;
  padding: 0; margin: 0 auto;
  max-width: 720px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  counter-reset: step;
}
.install__steps li {
  display: flex; gap: 12px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  font-size: 13.5px;
  color: var(--text-soft);
}
.step__n {
  flex-shrink: 0;
  width: 26px; height: 26px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--accent-soft);
  color: #cfd5ff;
  border: 1px solid rgba(91,108,255,.35);
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
}
.install__steps strong { color: var(--text); display: block; margin-bottom: 2px; }
.install__steps em { font-style: normal; font-family: var(--font-mono); color: var(--text); background: rgba(255,255,255,.04); padding: 1px 5px; border-radius: 4px; }
.install__steps code { font-family: var(--font-mono); color: #cfd5ff; background: rgba(91,108,255,.1); padding: 1px 5px; border-radius: 4px; }
.install__steps kbd {
  font-family: var(--font-mono);
  font-size: 11px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 4px;
  padding: 1px 6px;
  color: var(--text);
}
@media (max-width: 760px) {
  .install__steps { grid-template-columns: 1fr; }
}

/* =========================================================
   About
   ========================================================= */
.about { padding: 80px 0; }
.about__grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 40px;
  align-items: center;
}
.about__card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 6px;
}
.about__row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-soft);
  font-size: 14px;
}
.about__row:last-child { border-bottom: 0; }
.about__key { color: var(--text-muted); font-family: var(--font-mono); font-size: 12.5px; }
.about__val { color: var(--text); font-weight: 500; text-align: right; }
.about__val a:hover { color: var(--accent-2); }
@media (max-width: 760px) {
  .about__grid { grid-template-columns: 1fr; }
}

/* =========================================================
   Footer
   ========================================================= */
.footer {
  background: var(--bg-soft);
  border-top: 1px solid var(--border-soft);
  padding: 28px 0;
  margin-top: 0;
}
.footer__inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap;
}
.footer__brand {
  display: flex; align-items: center; gap: 8px;
  font-weight: 600;
  font-size: 14px;
}
.footer__mark { color: var(--accent); font-size: 16px; }
.footer__copy {
  margin: 0;
  color: var(--text-muted);
  font-size: 13px;
  font-family: var(--font-mono);
}
.footer__links { display: flex; gap: 18px; font-size: 13px; }
.footer__links a { color: var(--text-muted); transition: color .12s; }
.footer__links a:hover { color: var(--text); }

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 760px) {
  .chrome__menu { display: none; }
  .hero { padding: 64px 0 48px; }
  .features, .shots, .install { padding: 64px 0; }
  .section-head { margin-bottom: 36px; }
  .about { padding: 56px 0; }
  .footer__inner { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .chrome__inner { gap: 10px; height: 40px; }
  .chrome__brand { font-size: 12px; }
  .chrome__badge { font-size: 10px; }
  .card { padding: 18px; }
  .card__viz { min-height: 100px; }
}

/* Accessibility: reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
  }
}

/* Selection */
::selection { background: rgba(91,108,255,.35); color: #fff; }

/* Scrollbar (webkit) */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: #1f2433; border-radius: 8px; border: 2px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: #2a3045; }