/* PulseSense — «nocturnal lab» theme (dark UI, amber + teal, tech typography) */
:root {
  --ps-bg: #050308;
  --ps-surface: #0c0a12;
  --ps-elevated: #12101c;
  --ps-card: #181624;
  --ps-ink: #eceaf7;
  --ps-muted: #8f8aa3;
  --ps-accent: #f5a623;
  --ps-accent-hover: #ffc14d;
  --ps-secondary: #2ce6c8;
  --ps-violet: #9d8cff;
  --ps-line: rgba(157, 140, 255, 0.28);
  --ps-glow-amber: rgba(245, 166, 35, 0.22);
  --ps-footer-bg: #020105;
  --ps-footer-text: rgba(220, 218, 235, 0.74);

  /* aliases — старі імена з попередньої теми */
  --ps-paper: var(--ps-bg);
  --ps-paper2: var(--ps-elevated);
  --ps-deep: var(--ps-secondary);
  --ps-deep-soft: #5dccb8;
}

html {
  scroll-behavior: smooth;
}

body.ps-theme {
  font-family: "IBM Plex Sans", system-ui, sans-serif;
  background: var(--ps-bg);
  color: var(--ps-ink);
  overflow-x: hidden;
}

.ps-theme h1,
.ps-theme h2,
.ps-theme h3,
.ps-theme h4,
.ps-theme h5,
.ps-theme h6 {
  font-family: "Orbitron", sans-serif;
  font-weight: 600;
  letter-spacing: 0.04em;
}

/* Header */
.ps-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(12, 10, 18, 0.82);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--ps-line);
  box-shadow: 0 4px 40px rgba(0, 0, 0, 0.45);
}

.ps-header-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 14px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.ps-logo {
  font-family: "Orbitron", sans-serif;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--ps-ink);
  text-decoration: none;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.ps-logo-mark {
  width: 11px;
  height: 11px;
  border-radius: 2px;
  background: linear-gradient(135deg, var(--ps-accent) 0%, var(--ps-secondary) 100%);
  box-shadow: 0 0 18px var(--ps-glow-amber);
  flex-shrink: 0;
  transform: rotate(45deg);
}

.ps-badge {
  font-family: "Orbitron", sans-serif;
  font-size: 0.62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--ps-bg);
  background: linear-gradient(90deg, var(--ps-accent), #ff8c42);
  padding: 9px 16px;
  border-radius: 2px;
  border: none;
  box-shadow: 0 0 24px var(--ps-glow-amber);
}

/* Layout */
.ps-sheet {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 28px;
  position: relative;
}

/* Buttons */
.ps-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: linear-gradient(180deg, var(--ps-accent) 0%, #e09014 100%);
  color: #0a080a;
  font-weight: 700;
  padding: 17px 36px;
  font-size: 0.88rem;
  border-radius: 3px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  font-family: "Orbitron", sans-serif;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  box-shadow: 0 4px 24px rgba(245, 166, 35, 0.35);
}

.ps-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(245, 166, 35, 0.5);
}

/* Footer — сітка + градієнтна лінія замість смужок */
.ps-footer {
  margin-top: 0;
  background: var(--ps-footer-bg);
  color: var(--ps-footer-text);
  position: relative;
  padding: 0 0 32px;
}

.ps-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(157, 140, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(157, 140, 255, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  opacity: 0.6;
}

.ps-footer-wave {
  height: 4px;
  background: linear-gradient(90deg, transparent, var(--ps-accent), var(--ps-secondary), var(--ps-violet), transparent);
}

.ps-footer-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 44px 28px 0;
  position: relative;
  z-index: 1;
}

.ps-footer-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr 1fr;
  gap: 40px 28px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(157, 140, 255, 0.15);
}

@media (max-width: 800px) {
  .ps-footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
}

.ps-footer-brand .ps-logo {
  color: var(--ps-ink);
  margin-bottom: 14px;
}

.ps-footer-brand .ps-logo-mark {
  box-shadow: 0 0 16px rgba(44, 230, 200, 0.35);
}

.ps-footer-brand p {
  font-size: 0.92rem;
  line-height: 1.7;
  max-width: 340px;
  margin: 0;
}

.ps-footer-heading {
  display: block;
  font-family: "Orbitron", sans-serif;
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.28em;
  color: var(--ps-secondary);
  margin-bottom: 16px;
}

.ps-footer-nav {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}

.ps-footer-nav a {
  color: rgba(236, 234, 247, 0.92);
  text-decoration: none;
  font-size: 0.94rem;
  padding: 2px 0;
  border-left: 2px solid transparent;
  padding-left: 10px;
  margin-left: -10px;
  transition: border-color 0.2s, color 0.2s;
}

.ps-footer-nav a:hover {
  border-left-color: var(--ps-accent);
  color: #fff;
}

.ps-footer-contact .ps-plain-contact {
  color: var(--ps-ink);
  font-weight: 600;
  font-size: 1rem;
  display: block;
}

.ps-footer-meta {
  display: block;
  margin-top: 14px;
  font-size: 0.86rem;
  opacity: 0.82;
  line-height: 1.55;
}

.ps-footer-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 26px;
  font-size: 0.72rem;
  line-height: 1.55;
  color: rgba(180, 176, 198, 0.55);
  font-family: "IBM Plex Sans", sans-serif;
}

.ps-footer-nif {
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
}