/* ============================================
   207 Tech — Modern Dark Theme
   ============================================ */

:root {
  --bg: #0a0e14;
  --bg-elev: #0f141d;
  --bg-card: #121826;
  --border: rgba(148, 163, 184, 0.12);
  --border-hover: rgba(34, 211, 238, 0.4);
  --text: #e6edf3;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --accent: #22d3ee;
  --accent-2: #34d399;
  --accent-glow: rgba(34, 211, 238, 0.15);
  --gradient: linear-gradient(135deg, #22d3ee 0%, #34d399 100%);
  --radius: 14px;
  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;
  --maxw: 1160px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--accent); color: #06222a; }

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

a { color: var(--accent); text-decoration: none; }

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.4rem, 5.5vw, 4rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
h3 { font-size: 1.25rem; }

.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin-bottom: 16px;
}

.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--accent);
}

.lead {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 640px;
}

/* ---------- Nav ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(10, 14, 20, 0.78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo .mark {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: var(--gradient);
  display: grid;
  place-items: center;
  font-size: 0.72rem;
  font-weight: 700;
  color: #06222a;
  letter-spacing: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover, .nav-links a.active { color: var(--text); }

.nav-cta {
  background: var(--gradient);
  color: #06222a !important;
  font-weight: 600;
  padding: 9px 20px;
  border-radius: 10px;
  transition: opacity 0.2s, transform 0.2s;
}

.nav-cta:hover { opacity: 0.9; transform: translateY(-1px); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  margin: 5px 0;
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 180px 0 110px;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 70% 20%, rgba(34, 211, 238, 0.10), transparent),
    radial-gradient(ellipse 50% 40% at 20% 80%, rgba(52, 211, 153, 0.07), transparent);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, #000 30%, transparent 75%);
  pointer-events: none;
}

.hero .container { position: relative; z-index: 1; }

.hero h1 { max-width: 780px; margin-bottom: 24px; }

.hero .lead { margin-bottom: 40px; }

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 56px;
}

.badge {
  font-size: 0.85rem;
  color: var(--text-muted);
  border: 1px solid var(--border);
  background: var(--bg-elev);
  padding: 7px 16px;
  border-radius: 100px;
}

.badge strong { color: var(--text); font-weight: 600; }

/* Sub-page hero */
.hero.hero-sub { padding: 160px 0 70px; }

/* ---------- Buttons ---------- */
.btn-row { display: flex; flex-wrap: wrap; gap: 14px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  padding: 13px 28px;
  border-radius: 12px;
  cursor: pointer;
  border: none;
  transition: transform 0.2s, opacity 0.2s, background 0.2s, border-color 0.2s;
}

.btn-primary {
  background: var(--gradient);
  color: #06222a;
  box-shadow: 0 0 32px var(--accent-glow);
}

.btn-primary:hover { opacity: 0.92; transform: translateY(-2px); }

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid rgba(148, 163, 184, 0.3);
}

.btn-ghost:hover { border-color: var(--border-hover); transform: translateY(-2px); }

/* ---------- Sections ---------- */
.section { padding: 96px 0; }

.section-alt { background: var(--bg-elev); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.section-head { margin-bottom: 56px; max-width: 680px; }

.section-head p { color: var(--text-muted); margin-top: 16px; font-size: 1.05rem; }

/* ---------- Cards ---------- */
.grid {
  display: grid;
  gap: 24px;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}

.card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35), 0 0 24px var(--accent-glow);
}

.card h3 { margin-bottom: 12px; }

.card p { color: var(--text-muted); font-size: 0.95rem; }

.card .icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--accent-glow);
  border: 1px solid rgba(34, 211, 238, 0.25);
  display: grid;
  place-items: center;
  margin-bottom: 20px;
  font-size: 1.3rem;
}

.card ul {
  list-style: none;
  margin-top: 16px;
}

.card ul li {
  color: var(--text-muted);
  font-size: 0.92rem;
  padding: 6px 0 6px 24px;
  position: relative;
}

.card ul li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* Feature split cards (home page dual pillars) */
.pillar {
  position: relative;
  overflow: hidden;
  padding: 40px;
}

.pillar::after {
  content: "";
  position: absolute;
  top: 0; right: 0;
  width: 200px; height: 200px;
  background: radial-gradient(circle at top right, var(--accent-glow), transparent 70%);
  pointer-events: none;
}

.pillar .card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 24px;
  font-weight: 600;
  font-size: 0.95rem;
}

.pillar .card-link:hover { gap: 10px; }
.pillar .card-link { transition: gap 0.2s; }

/* ---------- Steps ---------- */
.steps { counter-reset: step; }

.step {
  display: flex;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid var(--border);
}

.step:last-child { border-bottom: none; }

.step-num {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent);
  border: 1px solid rgba(34, 211, 238, 0.3);
  background: var(--accent-glow);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.step h3 { margin-bottom: 6px; font-size: 1.1rem; }
.step p { color: var(--text-muted); font-size: 0.95rem; }

/* ---------- Stats ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat .num {
  font-family: var(--font-display);
  font-size: 2.6rem;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.stat .label { color: var(--text-muted); font-size: 0.9rem; margin-top: 4px; }

/* ---------- CTA band ---------- */
.cta-band {
  position: relative;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  padding: 64px 48px;
  text-align: center;
  overflow: hidden;
}

.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 100% at 50% 0%, rgba(34, 211, 238, 0.10), transparent);
  pointer-events: none;
}

.cta-band h2 { margin-bottom: 14px; }
.cta-band p { color: var(--text-muted); margin-bottom: 32px; max-width: 520px; margin-left: auto; margin-right: auto; }
.cta-band .btn-row { justify-content: center; }

/* ---------- Tech stack strip ---------- */
.tech-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tech-chip {
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--text-muted);
  border: 1px solid var(--border);
  background: var(--bg-elev);
  padding: 8px 16px;
  border-radius: 8px;
  transition: color 0.2s, border-color 0.2s;
}

.tech-chip:hover { color: var(--accent); border-color: var(--border-hover); }

/* ---------- Team ---------- */
.team-card { text-align: center; }

.avatar {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  margin: 0 auto 20px;
  background: var(--gradient);
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  color: #06222a;
}

.team-card .role { color: var(--accent); font-size: 0.85rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 12px; }

/* ---------- Forms ---------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

.form-group { display: flex; flex-direction: column; gap: 8px; }

.form-group.full { grid-column: 1 / -1; }

label {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-muted);
}

input, textarea, select {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 13px 16px;
  transition: border-color 0.2s, box-shadow 0.2s;
  width: 100%;
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

textarea { resize: vertical; min-height: 140px; }

.form-note { font-size: 0.85rem; color: var(--text-dim); margin-top: 16px; }

.form-status {
  display: none;
  margin-top: 20px;
  padding: 14px 18px;
  border-radius: 10px;
  font-size: 0.95rem;
}

.form-status.success {
  display: block;
  background: rgba(52, 211, 153, 0.1);
  border: 1px solid rgba(52, 211, 153, 0.35);
  color: #6ee7b7;
}

.form-status.error {
  display: block;
  background: rgba(248, 113, 113, 0.1);
  border: 1px solid rgba(248, 113, 113, 0.35);
  color: #fca5a5;
}

/* ---------- Contact info ---------- */
.contact-info .card { margin-bottom: 20px; }
.contact-info h3 { font-size: 1rem; margin-bottom: 4px; }
.contact-info p, .contact-info a { font-size: 0.95rem; }
.contact-info p { color: var(--text-muted); }

/* ---------- Footer ---------- */
footer {
  border-top: 1px solid var(--border);
  background: var(--bg-elev);
  padding: 64px 0 32px;
  margin-top: 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-grid h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  margin-bottom: 18px;
}

.footer-grid ul { list-style: none; }

.footer-grid ul li { margin-bottom: 10px; }

.footer-grid ul a { color: var(--text-muted); font-size: 0.95rem; transition: color 0.2s; }

.footer-grid ul a:hover { color: var(--text); }

.footer-about p { color: var(--text-muted); font-size: 0.95rem; max-width: 300px; margin-top: 16px; }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--text-dim);
  font-size: 0.85rem;
}

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Chat widget ---------- */
.chat-fab {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 200;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  border: none;
  background: var(--gradient);
  color: #06222a;
  cursor: pointer;
  display: grid;
  place-items: center;
  box-shadow: 0 8px 30px rgba(34, 211, 238, 0.35);
  transition: transform 0.2s;
}

.chat-fab:hover { transform: scale(1.08); }

.chat-panel {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 200;
  width: min(380px, calc(100vw - 32px));
  height: min(540px, calc(100vh - 100px));
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.55);
  overflow: hidden;
}

.chat-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elev);
}

.chat-head strong { font-family: var(--font-display); display: block; }

.chat-sub { font-size: 0.75rem; color: var(--text-dim); }

.chat-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1rem;
  cursor: pointer;
  padding: 6px;
}

.chat-log {
  flex: 1;
  overflow-y: auto;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.chat-msg {
  max-width: 85%;
  padding: 10px 14px;
  border-radius: 14px;
  font-size: 0.92rem;
  line-height: 1.5;
  white-space: pre-wrap;
}

.chat-msg.user {
  align-self: flex-end;
  background: var(--gradient);
  color: #06222a;
  border-bottom-right-radius: 4px;
}

.chat-msg.assistant {
  align-self: flex-start;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  color: var(--text);
  border-bottom-left-radius: 4px;
}

.chat-msg.typing { color: var(--text-dim); animation: pulse 1.2s infinite; }

@keyframes pulse { 50% { opacity: 0.4; } }

.chat-form {
  display: flex;
  gap: 8px;
  padding: 12px;
  border-top: 1px solid var(--border);
}

.chat-form input { flex: 1; padding: 11px 14px; }

.chat-form button {
  border: none;
  border-radius: 10px;
  background: var(--gradient);
  color: #06222a;
  padding: 0 16px;
  font-size: 1rem;
  cursor: pointer;
}

.chat-note {
  font-size: 0.72rem;
  color: var(--text-dim);
  text-align: center;
  padding: 0 12px 10px;
}

/* ---------- AI tools ---------- */
.tool-card { padding: 40px; }

.tool-result {
  margin-top: 28px;
  padding: 28px;
  border-radius: var(--radius);
  background: var(--bg-elev);
  border: 1px solid rgba(34, 211, 238, 0.25);
}

.tool-result h4 {
  color: var(--accent);
  font-size: 1rem;
  margin: 20px 0 8px;
}

.tool-result h4:first-child { margin-top: 0; }

.tool-result p, .tool-result li { color: var(--text-muted); font-size: 0.95rem; }

.tool-result ul { padding-left: 20px; margin: 8px 0; }

.tool-result li { margin-bottom: 6px; }

.tool-result.loading p { color: var(--text-dim); animation: pulse 1.2s infinite; }

.tool-result.error { border-color: rgba(248, 113, 113, 0.35); }

.ai-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  border: 1px solid rgba(34, 211, 238, 0.3);
  background: var(--accent-glow);
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 14px;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 680px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .hero { padding: 140px 0 80px; }
  .section { padding: 64px 0; }
  .cta-band { padding: 48px 24px; }

  .nav-toggle { display: block; }

  .nav-links {
    position: fixed;
    top: 68px;
    left: 0; right: 0;
    background: rgba(10, 14, 20, 0.97);
    backdrop-filter: blur(14px);
    flex-direction: column;
    align-items: flex-start;
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-140%);
    transition: transform 0.3s ease;
  }

  .nav-links.open { transform: translateY(0); }

  .nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
  .nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}