/* ════════════════════════════════════════════════
   ANALOGUE NORTH — STYLESHEET
   Dark tech aesthetic: black bg, white text,
   blue & purple accent system
════════════════════════════════════════════════ */

/* ─── TOKENS ─────────────────────────────────── */
:root {
  --black:        #080810;
  --surface:      #0d0d1a;
  --surface-2:    #121224;
  --border:       rgba(255,255,255,0.07);
  --border-glow:  rgba(124,92,252,0.3);

  --white:        #f0f0ff;
  --white-dim:    rgba(240,240,255,0.6);
  --white-faint:  rgba(240,240,255,0.25);

  --purple:       #7c5cfc;
  --purple-light: #a78bfa;
  --purple-dark:  #4c2fbc;
  --purple-glow:  rgba(124,92,252,0.2);

  --blue:         #3b82f6;
  --blue-light:   #60a5fa;
  --blue-cyan:    #22d3ee;
  --blue-glow:    rgba(59,130,246,0.2);

  --grad-main:    linear-gradient(135deg, var(--purple) 0%, var(--blue) 100%);
  --grad-glow:    linear-gradient(135deg, rgba(124,92,252,0.15) 0%, rgba(59,130,246,0.15) 100%);

  --font-display: 'Rajdhani', sans-serif;
  --font-mono:    'Share Tech Mono', monospace;
  --font-body:    'Outfit', sans-serif;

  --nav-h:        72px;
  --radius:       6px;
  --radius-lg:    12px;
  --transition:   0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ─── RESET & BASE ───────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--black);
  color: var(--white);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
input, textarea, select, button { font-family: inherit; }

/* ─── CANVAS ─────────────────────────────────── */
#neural-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.35;
}

/* ─── NAV ────────────────────────────────────── */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  padding: 0 2rem;
  border-bottom: 1px solid transparent;
  transition: background var(--transition), border-color var(--transition);
}
#navbar.scrolled {
  background: rgba(8,8,16,0.92);
  backdrop-filter: blur(16px);
  border-color: var(--border);
}
.nav-inner {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 2rem;
}
.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}
.logo-mark {
  color: var(--purple);
  font-size: 1.1rem;
  line-height: 1;
}
.logo-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.12em;
  color: var(--white);
}
.logo-accent { color: var(--purple-light); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  margin-left: auto;
}
.nav-links a {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--white-dim);
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--white); }

.nav-cta {
  margin-left: 1rem;
  padding: 0.5rem 1.25rem;
  background: transparent;
  border: 1px solid var(--purple);
  color: var(--purple-light);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}
.nav-cta:hover {
  background: var(--purple-glow);
  color: var(--white);
}

/* ─── HERO ───────────────────────────────────── */
#intro {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 4rem;
  padding: calc(var(--nav-h) + 4rem) 2rem 4rem;
  max-width: 1200px;
  margin: 0 auto;
}

.hero-content { grid-column: 1; }
.hero-visual   { grid-column: 2; display: flex; justify-content: center; align-items: center; }

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue-cyan);
  background: rgba(34,211,238,0.08);
  border: 1px solid rgba(34,211,238,0.2);
  padding: 0.4rem 0.9rem;
  border-radius: 100px;
  margin-bottom: 1.75rem;
}
.pulse-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--blue-cyan);
  animation: pulse-beat 2s ease-in-out infinite;
}
@keyframes pulse-beat {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.4; transform: scale(0.7); }
}

.hero-headline {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(3rem, 6vw, 5.5rem);
  line-height: 1.0;
  letter-spacing: -0.01em;
  margin-bottom: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.05em;
}
.hero-headline span { display: block; }
.hero-headline em {
  font-style: normal;
  background: var(--grad-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--white-dim);
  max-width: 520px;
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

.btn-primary {
  padding: 0.85rem 2rem;
  background: var(--grad-main);
  color: var(--white);
  border: none;
  border-radius: var(--radius);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: opacity var(--transition), transform var(--transition);
}
.btn-primary:hover { opacity: 0.88; transform: translateY(-2px); }

.btn-ghost {
  padding: 0.85rem 2rem;
  background: transparent;
  color: var(--white-dim);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
}
.btn-ghost:hover { border-color: var(--purple); color: var(--white); }

/* Brain SVG */
.brain-svg-wrapper {
  position: relative;
  width: min(380px, 90vw);
  aspect-ratio: 1;
}
.brain-icon {
  width: 100%;
  height: 100%;
  color: var(--purple-light);
  filter: drop-shadow(0 0 20px rgba(124,92,252,0.4));
}
.brain-glow {
  position: absolute;
  inset: 15%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(124,92,252,0.12) 0%, transparent 70%);
  pointer-events: none;
  animation: glow-breathe 4s ease-in-out infinite;
}
@keyframes glow-breathe {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50%       { opacity: 1;   transform: scale(1.08); }
}

.node-pulse {
  animation: node-flash 3s ease-in-out infinite;
}
@keyframes node-flash {
  0%, 100% { opacity: 0.8; }
  50%       { opacity: 1; filter: drop-shadow(0 0 4px currentColor); }
}

/* Hero stats */
.hero-stats {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem 2rem;
  margin-top: 2rem;
}
.stat-item { flex: 1; text-align: center; }
.stat-num {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 2.2rem;
  background: var(--grad-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--white-faint);
}
.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
  flex-shrink: 0;
}

/* Scroll indicator */
.scroll-indicator {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--white-faint);
}
.scroll-line {
  width: 48px; height: 1px;
  background: var(--grad-main);
  position: relative;
  overflow: hidden;
}
.scroll-line::after {
  content: '';
  position: absolute;
  left: -100%; top: 0;
  width: 100%; height: 100%;
  background: white;
  animation: scan 2s linear infinite;
}
@keyframes scan { to { left: 200%; } }

/* ─── LINE REVEAL ANIMATION ──────────────────── */
.line-reveal {
  opacity: 0;
  transform: translateY(28px);
  animation: reveal-up 0.7s cubic-bezier(0.2, 0.8, 0.3, 1) forwards;
}
.line-reveal.delay-1 { animation-delay: 0.15s; }
.line-reveal.delay-2 { animation-delay: 0.3s; }
.line-reveal.delay-3 { animation-delay: 0.45s; }
.line-reveal.delay-4 { animation-delay: 0.6s; }
@keyframes reveal-up {
  to { opacity: 1; transform: translateY(0); }
}

/* ─── KEY MESSAGE ────────────────────────────── */
#message {
  position: relative;
  z-index: 1;
  padding: 7rem 2rem;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.message-inner {
  max-width: 1100px;
  margin: 0 auto;
}
.message-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--purple-light);
  margin-bottom: 2rem;
}
.key-message {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  line-height: 1.45;
  color: var(--white);
  border-left: 3px solid var(--purple);
  padding-left: 2rem;
  margin-bottom: 4rem;
  max-width: 860px;
}

.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.pillar {
  padding: 2rem;
  background: var(--black);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition), transform var(--transition);
}
.pillar:hover {
  border-color: var(--border-glow);
  transform: translateY(-4px);
}
.pillar .pillar-icon {
  font-size: 1.4rem;
  color: var(--purple-light);
  margin-bottom: 1rem;
}
.pillar h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: 0.04em;
  margin-bottom: 0.6rem;
}
.pillar p {
  font-size: 0.92rem;
  color: var(--white-dim);
  line-height: 1.6;
}

/* ─── SERVICES ───────────────────────────────── */
#services {
  position: relative;
  z-index: 1;
  padding: 7rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 5rem;
}
.section-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--purple-light);
  margin-bottom: 0.75rem;
}
.section-header h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: 0.02em;
  margin-bottom: 0.75rem;
}
.section-sub {
  font-size: 0.95rem;
  color: var(--white-dim);
}

/* Service Pillars */
.service-pillar {
  margin-bottom: 2rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface);
  transition: border-color var(--transition);
}
.service-pillar.open { border-color: var(--border-glow); }

.pillar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 2rem 2.5rem;
  cursor: pointer;
  transition: background var(--transition);
  user-select: none;
}
.pillar-header:hover { background: var(--grad-glow); }

.pillar-header-left {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}
.pillar-icon-lg {
  width: 52px; height: 52px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.pillar-icon-lg svg { width: 32px; height: 32px; }

.ai-icon    { background: rgba(124,92,252,0.12); color: var(--purple-light); border: 1px solid rgba(124,92,252,0.25); }
.cyber-icon { background: rgba(59,130,246,0.12); color: var(--blue-light);   border: 1px solid rgba(59,130,246,0.25); }
.infra-icon { background: rgba(34,211,238,0.10); color: var(--blue-cyan);    border: 1px solid rgba(34,211,238,0.2); }

.pillar-number {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--white-faint);
  display: block;
  margin-bottom: 0.2rem;
}
.pillar-header h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: 0.04em;
}
.pillar-desc {
  font-size: 0.9rem;
  color: var(--white-dim);
  margin-top: 0.25rem;
}

.pillar-toggle {
  width: 36px; height: 36px;
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background var(--transition), border-color var(--transition);
}
.pillar-header:hover .pillar-toggle { border-color: var(--purple); }
.toggle-icon {
  font-size: 1.3rem;
  line-height: 1;
  color: var(--purple-light);
  transition: transform var(--transition);
  display: block;
  font-family: var(--font-mono);
}
.service-pillar.open .toggle-icon { transform: rotate(45deg); }

/* Tiles */
.tiles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5px;
  background: var(--border);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.55s cubic-bezier(0.4, 0, 0.2, 1);
}
.service-pillar.open .tiles-grid { max-height: 800px; }

.tile {
  background: var(--black);
  padding: 1.75rem;
  position: relative;
  overflow: hidden;
  transition: background var(--transition);
  cursor: default;
}
.tile::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--grad-glow);
  opacity: 0;
  transition: opacity var(--transition);
}
.tile:hover::before { opacity: 1; }
.tile:hover { background: var(--surface-2); }

.tile-glyph {
  font-size: 1.1rem;
  color: var(--purple);
  margin-bottom: 0.9rem;
  display: block;
  transition: color var(--transition);
}
.tile:hover .tile-glyph { color: var(--purple-light); }

.tile h4 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: 0.03em;
  margin-bottom: 0.6rem;
}
.tile p {
  font-size: 0.875rem;
  color: var(--white-dim);
  line-height: 1.65;
  margin-bottom: 1.1rem;
}
.tile-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: auto;
}
.tile-tags span {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--white-faint);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  padding: 0.2rem 0.55rem;
  border-radius: 3px;
}

/* ─── CONTACT ────────────────────────────────── */
#contact {
  position: relative;
  z-index: 1;
  padding: 7rem 2rem;
  background: var(--surface);
  border-top: 1px solid var(--border);
}
.contact-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 5rem;
  align-items: start;
}
.contact-left h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  margin: 0.75rem 0 1.25rem;
  line-height: 1.2;
}
.contact-left p {
  font-size: 1rem;
  color: var(--white-dim);
  line-height: 1.7;
  margin-bottom: 2.5rem;
}
.contact-methods { display: flex; flex-direction: column; gap: 1.25rem; }
.contact-method {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.method-icon {
  font-size: 1rem;
  color: var(--purple-light);
  flex-shrink: 0;
}
.method-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--white-faint);
  margin-bottom: 0.15rem;
}
.method-value {
  font-size: 0.95rem;
  color: var(--white-dim);
  transition: color var(--transition);
}
.method-value:hover { color: var(--purple-light); }

/* Form */
.contact-form-wrap {
  background: var(--black);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group { margin-bottom: 1.25rem; }
.form-group label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--white-faint);
  margin-bottom: 0.45rem;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--white);
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition);
  -webkit-appearance: none;
}
.form-group select { cursor: pointer; }
.form-group select option { background: var(--surface-2); }
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--white-faint); }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--purple); }
.form-group textarea { resize: vertical; min-height: 110px; }

.submit-btn { width: 100%; justify-content: center; display: flex; align-items: center; gap: 0.5rem; }
.btn-arrow { transition: transform var(--transition); }
.submit-btn:hover .btn-arrow { transform: translateX(4px); }

.form-success {
  margin-top: 1rem;
  padding: 0.85rem 1rem;
  background: rgba(34,211,238,0.08);
  border: 1px solid rgba(34,211,238,0.25);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--blue-cyan);
  text-align: center;
}
.hidden { display: none !important; }

/* ─── FOOTER ─────────────────────────────────── */
footer {
  position: relative;
  z-index: 1;
  background: var(--black);
  border-top: 1px solid var(--border);
  padding: 4rem 2rem 0;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 4rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--border);
}
.footer-tagline {
  font-size: 0.9rem;
  color: var(--white-faint);
  margin-top: 0.75rem;
  max-width: 320px;
  line-height: 1.6;
}
.footer-links { display: flex; gap: 3rem; }
.footer-col h5 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--white-faint);
  margin-bottom: 1rem;
}
.footer-col ul { display: flex; flex-direction: column; gap: 0.65rem; }
.footer-col a {
  font-size: 0.9rem;
  color: var(--white-dim);
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--purple-light); }

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 0 2rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--white-faint);
}
.footer-legal { display: flex; gap: 1.5rem; }
.footer-legal a { transition: color var(--transition); }
.footer-legal a:hover { color: var(--white-dim); }

/* ─── SCROLL ANIMATIONS ──────────────────────── */
.scroll-in {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s cubic-bezier(0.2, 0.8, 0.3, 1), transform 0.7s cubic-bezier(0.2, 0.8, 0.3, 1);
}
.scroll-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─── RESPONSIVE ─────────────────────────────── */
@media (max-width: 900px) {
  #intro {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 3rem;
  }
  .hero-content { grid-column: 1; }
  .hero-visual   { grid-column: 1; order: -1; }
  .hero-sub      { max-width: 100%; }
  .hero-actions  { justify-content: center; }
  .hero-stats    { grid-column: 1; }
  .scroll-indicator { display: none; }

  .pillars { grid-template-columns: 1fr; }
  .tiles-grid { grid-template-columns: 1fr 1fr; }

  .contact-inner { grid-template-columns: 1fr; gap: 3rem; }
  .footer-inner  { grid-template-columns: 1fr; gap: 2rem; }
}

@media (max-width: 640px) {
  .nav-links { display: none; }
  .tiles-grid { grid-template-columns: 1fr; }
  .form-row   { grid-template-columns: 1fr; }
  .pillar-header { padding: 1.5rem; }
  .pillar-header-left { gap: 1rem; }
  .pillar-desc { display: none; }
  .footer-links { flex-direction: column; gap: 2rem; }
  .footer-bottom { flex-direction: column; gap: 0.75rem; text-align: center; }
}