/* ============================================
   AI-IT.IO — Main Stylesheet
   Aesthetic: Deep Space Terminal × Modern SaaS
   ============================================ */

/* --- Reset & Variables --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:          #07070f;
  --bg-2:        #0d0d1a;
  --surface:     rgba(255,255,255,0.03);
  --surface-2:   rgba(255,255,255,0.055);
  --border:      rgba(0, 229, 255, 0.12);
  --border-2:    rgba(255,255,255,0.07);
  --cyan:        #00e5ff;
  --cyan-dim:    rgba(0, 229, 255, 0.18);
  --cyan-glow:   rgba(0, 229, 255, 0.35);
  --purple:      #7c3aed;
  --text-1:      #eef2ff;
  --text-2:      #8892b0;
  --text-3:      #4a5568;
  --green:       #00ffa3;
  --red:         #ff5f5f;
  --yellow:      #ffc107;
  --font-display: 'Syne', sans-serif;
  --font-mono:   'JetBrains Mono', monospace;
  --font-body:   'DM Sans', sans-serif;
  --radius:      12px;
  --radius-lg:   18px;
  --nav-h:       64px;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text-1);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* --- Background Canvas --- */
#grid-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: .45;
}

.noise-overlay {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  opacity: .5;
}

/* All content above canvas */
nav, section, footer { position: relative; z-index: 2; }

/* --- Typography utils --- */
.mono { font-family: var(--font-mono); letter-spacing: .02em; }

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(7,7,15,0.7);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-2);
  transition: background .3s;
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--text-1);
  text-decoration: none;
  letter-spacing: .06em;
}
.nav-logo .logo-bracket { color: var(--cyan); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}
.nav-links a {
  font-family: var(--font-body);
  font-size: .9rem;
  font-weight: 500;
  color: var(--text-2);
  text-decoration: none;
  transition: color .2s;
}
.nav-links a:hover { color: var(--text-1); }

.nav-cta {
  padding: .45rem 1.1rem !important;
  border: 1px solid var(--border) !important;
  border-radius: 6px !important;
  color: var(--cyan) !important;
  transition: background .2s, color .2s !important;
}
.nav-cta:hover {
  background: var(--cyan-dim) !important;
  color: var(--cyan) !important;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text-2);
  border-radius: 2px;
  transition: .3s;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  padding: .7rem 1.6rem;
  font-family: var(--font-body);
  font-size: .95rem;
  font-weight: 500;
  border-radius: 8px;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all .25s;
}

.btn-primary {
  background: var(--cyan);
  color: #000;
  box-shadow: 0 0 24px rgba(0,229,255,.28);
}
.btn-primary:hover {
  background: #33ecff;
  box-shadow: 0 0 36px rgba(0,229,255,.45);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-2);
  border: 1px solid var(--border-2);
}
.btn-ghost:hover {
  color: var(--text-1);
  border-color: rgba(255,255,255,.18);
  background: var(--surface-2);
}

.btn-large { padding: .85rem 2rem; font-size: 1rem; }

/* --- Container --- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* --- Section common --- */
.section-label {
  display: inline-block;
  font-size: .78rem;
  color: var(--cyan);
  margin-bottom: 1rem;
  letter-spacing: .12em;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--text-1);
  margin-bottom: 1rem;
}

.section-sub {
  font-size: 1.05rem;
  color: var(--text-2);
  max-width: 520px;
}

/* --- Hero --- */
.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: calc(var(--nav-h) + 2rem) 2rem 4rem;
  max-width: 1200px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  padding: .38rem .85rem;
  border: 1px solid var(--border);
  border-radius: 100px;
  margin-bottom: 2.5rem;
  background: var(--surface);
  font-size: .75rem;
  color: var(--text-2);
}

.badge-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
  animation: pulse-green 2s infinite;
}

@keyframes pulse-green {
  0%, 100% { opacity: 1; box-shadow: 0 0 8px var(--green); }
  50% { opacity: .6; box-shadow: 0 0 16px var(--green); }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(3.2rem, 9vw, 7rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -.02em;
  display: flex;
  flex-direction: column;
  margin-bottom: 2rem;
}

.title-line { display: block; }
.title-accent { color: var(--cyan); }

.hero-sub {
  font-size: clamp(.95rem, 2vw, 1.15rem);
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 2.5rem;
  max-width: 540px;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 3.5rem;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.stat { display: flex; flex-direction: column; gap: .2rem; }

.stat-num {
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--cyan);
  line-height: 1;
}

.stat-label {
  font-size: .8rem;
  color: var(--text-3);
}

.stat-divider {
  width: 1px;
  height: 32px;
  background: var(--border-2);
}

.hero-scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .6rem;
  font-size: .7rem;
  color: var(--text-3);
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--text-3), transparent);
  animation: scroll-fade 1.5s ease-in-out infinite;
}

@keyframes scroll-fade {
  0% { opacity: 0; transform: scaleY(0); transform-origin: top; }
  50% { opacity: 1; transform: scaleY(1); }
  100% { opacity: 0; transform: scaleY(1); transform-origin: bottom; }
}

/* --- Reveal animations --- */
.reveal-up {
  opacity: 0;
  transform: translateY(24px);
  animation: reveal-up .7s cubic-bezier(.22,1,.36,1) forwards;
}

@keyframes reveal-up {
  to { opacity: 1; transform: translateY(0); }
}

/* --- Services Grid --- */
.services {
  padding: 7rem 0;
}

.section-header {
  margin-bottom: 3.5rem;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.25rem;
}

.service-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 1.8rem;
  background: var(--surface);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: inherit;
  transition: border-color .25s, transform .25s, background .25s;
  overflow: hidden;
}

.service-card.live {
  border-color: var(--border);
  cursor: pointer;
}

.service-card.live:hover {
  background: var(--surface-2);
  border-color: rgba(0, 229, 255, 0.3);
  transform: translateY(-3px);
}

.service-card.live:hover .card-glow {
  opacity: 1;
}

.service-card.live:hover .card-arrow {
  transform: translateX(4px);
  color: var(--cyan);
}

.card-glow {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: radial-gradient(ellipse at 50% 0%, rgba(0,229,255,0.07) 0%, transparent 65%);
  opacity: 0;
  transition: opacity .3s;
  pointer-events: none;
}

.card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.card-icon {
  width: 52px; height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid rgba(0, 229, 255, 0.15);
  border-radius: 12px;
  color: var(--cyan);
}
.card-icon.muted {
  background: var(--surface);
  border-color: var(--border-2);
  color: var(--text-3);
}

.card-status {
  display: flex;
  align-items: center;
  gap: .4rem;
  font-size: .72rem;
  color: var(--text-2);
}

.status-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}
.live-dot {
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
  animation: pulse-green 2s infinite;
}

.soon-label {
  color: var(--text-3);
  font-size: .7rem;
  letter-spacing: .1em;
}

.card-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-1);
  margin-bottom: .6rem;
  line-height: 1.2;
}
.card-title.muted { color: var(--text-3); }

.card-desc {
  font-size: .9rem;
  color: var(--text-2);
  line-height: 1.6;
  flex: 1;
  margin-bottom: 1.5rem;
}
.card-desc.muted { color: var(--text-3); }

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--border-2);
}

.card-domain {
  font-size: .78rem;
  color: var(--cyan);
}
.card-domain.muted { color: var(--text-3); }

.card-arrow {
  color: var(--text-3);
  transition: transform .2s, color .2s;
  flex-shrink: 0;
}

/* Featured cards */
.service-card.featured { border-color: rgba(0,229,255,.22); }
.service-card.progress { border-color: rgba(124,58,237,.25); }
.service-card.progress:hover { border-color: rgba(124,58,237,.45); }

.card-glow-purple {
  background: radial-gradient(ellipse at 50% 0%, rgba(124,58,237,0.09) 0%, transparent 65%);
}

.card-icon-purple {
  background: rgba(124,58,237,.1) !important;
  border-color: rgba(124,58,237,.2) !important;
  color: #a78bfa !important;
}

.card-badges {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: .35rem;
}

.card-badge {
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .08em;
  padding: .22rem .6rem;
  border-radius: 100px;
  display: flex;
  align-items: center;
  gap: .35rem;
  white-space: nowrap;
}

.badge-live {
  background: rgba(0,255,163,.1);
  color: var(--green);
  border: 1px solid rgba(0,255,163,.2);
}

.badge-adopt {
  background: rgba(0,229,255,.08);
  color: var(--cyan);
  border: 1px solid rgba(0,229,255,.18);
}

.badge-progress {
  background: rgba(255,193,7,.1);
  color: #ffc107;
  border: 1px solid rgba(255,193,7,.2);
}

.badge-invest {
  background: rgba(124,58,237,.1);
  color: #a78bfa;
  border: 1px solid rgba(124,58,237,.2);
}

.card-tech {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin-bottom: 1.25rem;
}

.tech-tag {
  font-family: var(--font-mono);
  font-size: .7rem;
  padding: .2rem .55rem;
  background: var(--surface);
  border: 1px solid var(--border-2);
  border-radius: 4px;
  color: var(--text-3);
}

.card-cta-btn {
  font-family: var(--font-mono);
  font-size: .72rem;
  padding: .35rem .9rem;
  background: var(--cyan-dim);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--cyan);
  text-decoration: none;
  transition: background .2s, box-shadow .2s;
  white-space: nowrap;
}
.card-cta-btn:hover {
  background: rgba(0,229,255,.25);
  box-shadow: 0 0 14px rgba(0,229,255,.2);
}
.card-cta-purple {
  background: rgba(124,58,237,.12);
  border-color: rgba(124,58,237,.25);
  color: #a78bfa;
}
.card-cta-purple:hover {
  background: rgba(124,58,237,.22);
  box-shadow: 0 0 14px rgba(124,58,237,.2);
}

/* --- About --- */
.about {
  padding: 7rem 0;
  background: linear-gradient(to bottom, transparent, rgba(124,58,237,0.04), transparent);
}

.about-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.about-left { max-width: 480px; }

.about-body {
  margin: 1.8rem 0;
}
.about-body p {
  color: var(--text-2);
  line-height: 1.75;
  margin-bottom: 1rem;
}
.about-body p:last-child { margin-bottom: 0; }

.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
}

.tag {
  font-size: .73rem;
  padding: .3rem .8rem;
  border: 1px solid var(--border-2);
  border-radius: 100px;
  color: var(--text-2);
  background: var(--surface);
}

/* Terminal Card */
.terminal-card {
  background: #0b0b17;
  border: 1px solid rgba(0,229,255,0.18);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 0 60px rgba(0,229,255,0.08), 0 24px 60px rgba(0,0,0,.5);
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .9rem 1.2rem;
  background: rgba(255,255,255,0.03);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.t-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}
.t-dot.red    { background: #ff5f5f; }
.t-dot.yellow { background: #ffc107; }
.t-dot.green  { background: #27c93f; }

.t-title {
  font-size: .73rem;
  color: var(--text-3);
  margin-left: .5rem;
}

.terminal-body {
  padding: 1.2rem 1.4rem 1.4rem;
  font-family: var(--font-mono);
  font-size: .82rem;
  line-height: 1.9;
}

.t-line { display: flex; gap: .5em; flex-wrap: wrap; }
.t-spacer { height: .4em; }
.t-prompt { color: var(--cyan); user-select: none; }
.t-cmd { color: var(--text-2); }
.t-service { color: #e2e8f0; }
.t-sep { color: var(--text-3); }
.t-ok { color: var(--green); }
.t-comment { color: var(--text-3); }

.cursor-blink {
  color: var(--cyan);
  animation: blink 1.2s step-end infinite;
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* --- Contact --- */
.contact {
  padding: 7rem 0;
  text-align: center;
}

.contact-inner { max-width: 600px; margin: 0 auto; }

.contact-sub {
  font-size: 1.05rem;
  color: var(--text-2);
  margin: 1rem 0 2.5rem;
}

.contact-actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* --- Footer --- */
.footer {
  padding: 2rem 0;
  border-top: 1px solid var(--border-2);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-logo {
  font-size: .85rem;
  color: var(--cyan);
}

.footer-copy {
  font-size: .75rem;
  color: var(--text-3);
}

.footer-status {
  display: flex;
  align-items: center;
  gap: .45rem;
  font-size: .75rem;
  color: var(--text-3);
}

/* --- Scroll reveal --- */
.scroll-reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity .7s cubic-bezier(.22,1,.36,1), transform .7s cubic-bezier(.22,1,.36,1);
}
.scroll-reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 900px) {
  .about-inner {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .about-left { max-width: 100%; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-h);
    left: 0; right: 0;
    background: rgba(7,7,15,.97);
    padding: 1.5rem 2rem 2rem;
    border-bottom: 1px solid var(--border-2);
    gap: 1.5rem;
    z-index: 99;
  }
  .nav-cta { border: none !important; padding: 0 !important; }

  .hero { min-height: 100svh; padding-top: calc(var(--nav-h) + 1.5rem); }
  .hero-stats { flex-wrap: wrap; gap: 1.5rem; }
  .stat-divider { display: none; }
  .services-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; text-align: center; }
  .br-desk { display: none; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { justify-content: center; }
  .contact-actions { flex-direction: column; align-items: stretch; }
  .contact-actions .btn { justify-content: center; }
}