/* PortRun landing page — monochrome, terminal-leaning */

:root {
  --fg: #0a0a0a;
  --fg-dim: rgba(10, 10, 10, 0.62);
  --fg-dimmer: rgba(10, 10, 10, 0.38);
  --bg: #fafaf7;
  --line: rgba(10, 10, 10, 0.12);
  --line-soft: rgba(10, 10, 10, 0.06);
  --accent: oklch(0.72 0.15 145);
  --mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
  --sans: 'Inter', ui-sans-serif, system-ui, -apple-system, sans-serif;
  --pad: 96px;
  --maxw: 1240px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: 'ss01', 'ss02';
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; }

.mono { font-family: var(--mono); }
.mono-label {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--fg-dim);
}
.mono-dim {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--fg-dimmer);
}

/* ── Background treatments ─────────────────────────────────────────────── */

.bg-grid::before {
  content: '';
  position: fixed; inset: 0;
  background-image:
    linear-gradient(to right, var(--line-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line-soft) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at 50% 0%, black 40%, transparent 80%);
  pointer-events: none;
  z-index: 0;
}
.bg-dots::before {
  content: '';
  position: fixed; inset: 0;
  background-image: radial-gradient(var(--line) 1px, transparent 1px);
  background-size: 24px 24px;
  mask-image: radial-gradient(ellipse at 50% 0%, black 30%, transparent 75%);
  pointer-events: none;
  z-index: 0;
}
.bg-lines::before {
  content: '';
  position: fixed; inset: 0;
  background-image: repeating-linear-gradient(
    180deg, transparent 0, transparent 31px, var(--line-soft) 31px, var(--line-soft) 32px
  );
  pointer-events: none;
  z-index: 0;
}
.bg-plain::before { display: none; }

/* ── Page shell ────────────────────────────────────────────────────────── */

.wrap {
  position: relative;
  z-index: 1;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 32px;
}

/* ── Top nav ───────────────────────────────────────────────────────────── */

.nav {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 28px;
  font-family: var(--mono);
  font-size: 13px;
}
.nav-brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 600; letter-spacing: -0.01em;
}
.nav-brand-mark {
  width: 22px; height: 22px;
  border: 1px solid var(--fg);
  display: grid; place-items: center;
  font-size: 11px; font-weight: 700;
  position: relative;
}
.nav-brand-mark::after {
  content: ''; position: absolute;
  inset: -4px; border: 1px solid var(--fg-dimmer);
  opacity: 0.4;
}
.nav-status {
  display: flex; align-items: center; gap: 8px;
  color: var(--fg-dim);
}
.nav-status-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in oklch, var(--accent) 25%, transparent);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse { 50% { opacity: 0.35; } }

/* ── Hero ──────────────────────────────────────────────────────────────── */

.hero {
  padding: 72px 0 var(--pad);
}
.hero--stack { display: block; }
.hero--split {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: 64px;
  align-items: center;
}
.hero--centered {
  text-align: center;
  max-width: 960px;
  margin: 0 auto;
}

.hero-kicker {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 2px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--fg-dim);
  background: color-mix(in oklch, var(--bg) 60%, white);
}
.hero-kicker-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
}

.hero-h {
  font-family: var(--sans);
  font-weight: 500;
  font-size: clamp(44px, 6.2vw, 88px);
  line-height: 0.98;
  letter-spacing: -0.03em;
  margin: 28px 0 24px;
  max-width: 18ch;
  text-wrap: balance;
}
.hero--centered .hero-h { margin-left: auto; margin-right: auto; }
.hero-h em {
  font-style: normal;
  font-family: var(--mono);
  font-weight: 400;
  font-size: 0.82em;
  letter-spacing: -0.01em;
  padding: 0 0.15em;
  position: relative;
  top: -0.04em;
  color: var(--fg);
  background: linear-gradient(
    to top,
    color-mix(in oklch, var(--accent) 30%, transparent) 0%,
    color-mix(in oklch, var(--accent) 30%, transparent) 38%,
    transparent 38%
  );
}

.hero-sub {
  font-size: 19px;
  line-height: 1.5;
  color: var(--fg-dim);
  max-width: 52ch;
  margin: 0 0 40px;
  text-wrap: pretty;
}
.hero--centered .hero-sub { margin-left: auto; margin-right: auto; }

.hero-visual {
  position: relative;
}
.hero--stack .hero-visual { margin-top: 56px; }
.hero--centered .hero-visual { margin-top: 64px; }

/* ── Terminal ──────────────────────────────────────────────────────────── */

.term {
  background: #0a0a0a;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 6px;
  overflow: hidden;
  box-shadow:
    0 1px 0 rgba(255,255,255,0.05) inset,
    0 24px 60px -20px rgba(0,0,0,0.3),
    0 8px 24px -8px rgba(0,0,0,0.2);
  font-family: var(--mono);
  font-size: 13.5px;
  line-height: 1.7;
}
.term-chrome {
  display: flex; align-items: center;
  padding: 10px 14px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  background: rgba(255,255,255,0.02);
}
.term-dots {
  display: flex; gap: 6px;
}
.term-dots span {
  width: 10px; height: 10px; border-radius: 50%;
  background: rgba(255,255,255,0.15);
}
.term-title {
  flex: 1; text-align: center;
  font-size: 11px;
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.02em;
}
.term-clock {
  display: flex; align-items: center; gap: 6px;
  font-size: 11px;
  color: rgba(255,255,255,0.5);
  font-variant-numeric: tabular-nums;
}
.term-clock-dot {
  width: 6px; height: 6px; border-radius: 50%;
}
.term-body {
  padding: 20px 20px 48px;
  min-height: 360px;
  position: relative;
  color: rgba(255,255,255,0.85);
}
.term-line {
  white-space: pre;
  animation: term-in 0.18s ease-out;
}
@keyframes term-in {
  from { opacity: 0; transform: translateY(2px); }
  to { opacity: 1; transform: translateY(0); }
}
.term-ps1 { font-weight: 600; }
.term-cursor {
  display: inline-block;
  width: 8px; height: 15px;
  vertical-align: text-bottom;
  animation: blink 1s steps(2) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* ── Console (infrastructure graph) ───────────────────────────────────── */

.console {
  background: #0a0a0a;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 6px;
  overflow: hidden;
  box-shadow:
    0 1px 0 rgba(255,255,255,0.05) inset,
    0 24px 60px -20px rgba(0,0,0,0.3),
    0 8px 24px -8px rgba(0,0,0,0.2);
}
.console-chrome {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 14px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  background: rgba(255,255,255,0.02);
  font-family: var(--mono);
  font-size: 11px;
}
.console-tabs {
  display: flex; gap: 4px;
}
.console-tab {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 12px 14px;
  color: rgba(255,255,255,0.4);
  border-bottom: 1px solid transparent;
  margin-bottom: -1px;
}
.console-tab--on {
  color: rgba(255,255,255,0.92);
  border-bottom-color: rgba(255,255,255,0.9);
  background: rgba(255,255,255,0.02);
}
.console-tab-dot {
  width: 6px; height: 6px; border-radius: 50%;
}
.console-meta {
  display: flex; gap: 8px; align-items: center;
  color: rgba(255,255,255,0.5);
  font-variant-numeric: tabular-nums;
}
.console-meta-sep { color: rgba(255,255,255,0.25); }
.graph-svg {
  width: 100%;
  aspect-ratio: 620 / 440;
  display: block;
}

/* ── Graph (legacy / unused direct) ────────────────────────────────────── */

.graph {
  width: 100%;
  aspect-ratio: 620 / 440;
  background: #0a0a0a;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 6px;
  box-shadow:
    0 1px 0 rgba(255,255,255,0.05) inset,
    0 24px 60px -20px rgba(0,0,0,0.3);
}

/* ── Signup form ───────────────────────────────────────────────────────── */

.signup {
  border: 1px solid var(--line);
  background: color-mix(in oklch, var(--bg) 50%, white);
  border-radius: 4px;
  max-width: 640px;
  margin: 0;
}
.hero--centered .signup { margin-left: auto; margin-right: auto; }

.signup-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px dashed var(--line);
  font-family: var(--mono);
  font-size: 12px;
  color: var(--fg-dim);
}
.signup-body { padding: 20px 16px; }
.signup-foot { padding-top: 12px; }

.field {
  display: flex; flex-direction: column; gap: 6px;
}
.field--inline {
  flex-direction: row;
  align-items: stretch;
  gap: 8px;
  flex-wrap: wrap;
}
.field--full { grid-column: 1 / -1; }
.field-lbl {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--fg-dim);
  letter-spacing: 0.01em;
}
.field--inline .field-lbl {
  position: absolute;
  left: -9999px;
}
.field input,
.field textarea {
  font-family: var(--mono);
  font-size: 14px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  background: white;
  color: var(--fg);
  border-radius: 3px;
  outline: none;
  min-width: 0;
  align-self: start;
  width: 100%;
  resize: vertical;
  transition: border-color 0.12s;
}
.field--inline input { flex: 1; width: auto; align-self: stretch; }
.field input:focus,
.field textarea:focus {
  border-color: var(--fg);
}
.field input[data-invalid='1'],
.field textarea[data-invalid='1'] {
  border-color: #c0392b;
}
.field-err {
  font-family: var(--mono);
  font-size: 11px;
  color: #c0392b;
  margin-top: 6px;
  padding-left: 2px;
}
.field-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.chip-row {
  display: flex; flex-wrap: wrap; gap: 6px;
}
.chip {
  font-family: var(--mono);
  font-size: 12px;
  padding: 7px 11px;
  border: 1px solid var(--line);
  background: white;
  color: var(--fg-dim);
  border-radius: 2px;
  cursor: pointer;
  transition: border-color 0.12s, color 0.12s;
}
.chip:hover { border-color: var(--fg-dimmer); color: var(--fg); }
.chip--on {
  color: var(--fg);
  background: color-mix(in oklch, var(--accent) 12%, white);
}

.btn-primary {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: 3px;
  cursor: pointer;
  letter-spacing: 0.01em;
  transition: transform 0.06s, filter 0.12s;
}
.btn-primary:hover:not(:disabled) { filter: brightness(0.92); }
.btn-primary:active { transform: translateY(1px); }
.btn-primary:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-ghost {
  font-family: var(--mono);
  font-size: 13px;
  padding: 10px 16px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 3px;
  color: var(--fg-dim);
  cursor: pointer;
}
.btn-ghost:hover { color: var(--fg); border-color: var(--fg-dimmer); }

.signup-actions {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
}

/* Done state */
.signup--done {
  display: flex; gap: 20px; padding: 28px;
  align-items: flex-start;
}
.signup-check {
  width: 42px; height: 42px;
  border: 1.5px solid;
  border-radius: 50%;
  display: grid; place-items: center;
  flex-shrink: 0;
}
.signup-done-head {
  font-family: var(--mono);
  font-size: 12px;
  display: flex; gap: 6px;
  margin-bottom: 10px;
}
.signup-done-body h3 {
  font-size: 22px; font-weight: 500;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
}
.signup-done-body p {
  color: var(--fg-dim);
  margin: 0 0 16px;
  font-size: 15px;
}

/* ── Features ──────────────────────────────────────────────────────────── */

.features {
  padding: var(--pad) 0;
  border-top: 1px dashed var(--line);
}
.sect-head {
  display: flex; flex-direction: column; gap: 20px;
  margin-bottom: 64px;
  max-width: 760px;
}
.sect-tag {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--fg-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.sect-h {
  font-family: var(--sans);
  font-size: clamp(30px, 3.6vw, 48px);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0;
  text-wrap: balance;
}
.sect-h em {
  font-style: normal;
  font-family: var(--mono);
  font-weight: 400;
  font-size: 0.78em;
  padding: 0 0.15em;
  background: linear-gradient(
    to top,
    color-mix(in oklch, var(--accent) 25%, transparent) 0%,
    color-mix(in oklch, var(--accent) 25%, transparent) 38%,
    transparent 38%
  );
}

.feat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.feat {
  background: var(--bg);
  padding: 32px 28px;
  display: flex; flex-direction: column;
  min-height: 340px;
}
.feat-head {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 20px;
}
.feat-id {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.08em;
}
.feat-rule {
  flex: 1; height: 1px; background: var(--line);
}
.feat-title {
  font-family: var(--sans);
  font-size: 22px;
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.015em;
  margin: 0 0 12px;
  text-wrap: balance;
}
.feat-body {
  font-size: 15px;
  color: var(--fg-dim);
  margin: 0 0 24px;
  text-wrap: pretty;
}
.feat-ascii {
  font-family: var(--mono);
  font-size: 11.5px;
  line-height: 1.5;
  margin: auto 0 0;
  padding: 14px;
  background: color-mix(in oklch, var(--bg) 50%, black 4%);
  border: 1px solid var(--line-soft);
  border-radius: 3px;
  white-space: pre;
  overflow-x: auto;
}

/* ── Footer ────────────────────────────────────────────────────────────── */

.foot {
  border-top: 1px solid var(--line);
  padding: 40px 0 56px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--fg-dim);
  display: flex; justify-content: space-between; align-items: center;
  gap: 16px; flex-wrap: wrap;
}
.foot-left { display: flex; align-items: center; gap: 16px; }
.foot-links { display: flex; gap: 20px; }
.foot-links a:hover { color: var(--fg); }

/* ── Density classes (toggled on .wrap) ────────────────────────────────── */

.density-tight { --pad: 72px; }
.density-tight .hero { padding: 48px 0 72px; }
.density-tight .hero-h { margin: 20px 0 18px; }
.density-tight .hero-sub { margin-bottom: 28px; }
.density-tight .feat { padding: 24px 22px; min-height: 280px; }
.density-tight .sect-head { margin-bottom: 40px; }

.density-airy { --pad: 136px; }
.density-airy .hero { padding: 96px 0 136px; }
.density-airy .feat { padding: 40px 36px; min-height: 380px; }
.density-airy .sect-head { margin-bottom: 88px; }

/* ── Responsive ────────────────────────────────────────────────────────── */

@media (max-width: 900px) {
  .hero--split { grid-template-columns: 1fr; gap: 48px; }
  .feat-grid { grid-template-columns: 1fr; }
  .field-grid { grid-template-columns: 1fr; }
  :root { --pad: 72px; }
  .wrap { padding: 0 20px; }
}