/* ==========================================================================
   Sterling Outbound — Design System
   Dark, confident, product-like. Space Grotesk (headings) + DM Sans (body)
   + JetBrains Mono (illustrative widget labels).
   ========================================================================== */

:root {
  /* Color */
  --bg: #0a0e1a;
  --bg-elevated: #10162a;
  --bg-elevated-2: #161d38;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #edf0f7;
  --text-muted: #8d96ac;
  --text-dim: #5b6478;
  --accent: #38bdf8;
  --accent-2: #6366f1;
  --accent-glow: rgba(56, 189, 248, 0.28);
  --success: #34d399;
  --warn: #fbbf24;

  /* Type */
  --font-heading: "Space Grotesk", sans-serif;
  --font-body: "DM Sans", sans-serif;
  --font-mono: "JetBrains Mono", monospace;

  /* Spacing scale (marketing site — spacious) */
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 48px;
  --space-6: 64px;
  --space-7: 96px;
  --space-8: 128px;

  --radius: 14px;
  --radius-sm: 8px;
  --max-width: 1180px;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: auto; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 var(--space-2);
  letter-spacing: -0.01em;
}
p { margin: 0 0 var(--space-2); color: var(--text-muted); }
.mono { font-family: var(--font-mono); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---- Layout helpers ---- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-3);
}
.section { padding: var(--space-7) 0; position: relative; }
.section-tight { padding: var(--space-6) 0; }
.section-head { max-width: 640px; margin: 0 0 var(--space-5); }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-2);
}
.lede { font-size: 19px; color: var(--text-muted); }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 26px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: transform 200ms var(--ease), box-shadow 200ms var(--ease), background 200ms var(--ease), border-color 200ms var(--ease);
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #04101c;
  box-shadow: 0 0 0 0 var(--accent-glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px -6px var(--accent-glow);
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border-strong);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.btn-sm { padding: 10px 18px; font-size: 14px; }
.btn svg { width: 16px; height: 16px; flex: none; }

/* ---- Nav ---- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(10, 14, 26, 0.72);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.logo {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 8px;
}
.logo .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px var(--accent-glow); }

.main-nav { display: flex; align-items: center; gap: var(--space-5); }
.nav-links { display: flex; align-items: center; gap: var(--space-4); }
.nav-links > li { position: relative; }
.nav-links a:not(.btn) {
  font-size: 14.5px;
  color: var(--text-muted);
  transition: color 180ms var(--ease);
  padding: 8px 0;
}
.nav-links a:not(.btn):hover,
.nav-links a.active { color: var(--text); }

.has-dropdown { display: flex; align-items: center; gap: 4px; cursor: pointer; }
.has-dropdown svg { width: 12px; height: 12px; transition: transform 200ms var(--ease); }
.dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  min-width: 240px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 180ms var(--ease), transform 180ms var(--ease), visibility 180ms;
  box-shadow: 0 20px 40px -12px rgba(0,0,0,0.5);
}
.nav-dropdown-item:hover .dropdown,
.nav-dropdown-item:focus-within .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.dropdown a {
  display: block;
  padding: 10px 12px;
  border-radius: 6px;
  font-size: 14px;
  color: var(--text-muted);
}
.dropdown a:hover { background: var(--bg-elevated-2); color: var(--text); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
}
.nav-toggle span { width: 22px; height: 2px; background: var(--text); transition: transform 200ms var(--ease), opacity 200ms var(--ease); }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---- Hero / Three.js canvas ---- */
.hero-canvas-wrap {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
#hero-canvas, .bg-canvas { display: block; width: 100%; height: 100%; }
.hero {
  position: relative;
  padding: 190px 0 var(--space-7);
  overflow: hidden;
  min-height: 92vh;
  display: flex;
  align-items: center;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 50% at 50% 30%, transparent, var(--bg) 80%);
  pointer-events: none;
  z-index: 1;
}
.hero-inner { position: relative; z-index: 2; max-width: 780px; }
.hero h1 { font-size: clamp(38px, 5.4vw, 66px); margin-bottom: var(--space-3); }
.hero .lede { max-width: 560px; margin-bottom: var(--space-4); }
.hero-actions { display: flex; align-items: center; gap: var(--space-3); flex-wrap: wrap; }
.reassure { font-size: 13.5px; color: var(--text-dim); font-family: var(--font-mono); }

/* inner-page hero (smaller, lighter canvas) */
.page-hero {
  position: relative;
  padding: 160px 0 var(--space-6);
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}
.page-hero .hero-canvas-wrap { opacity: 0.55; }
.page-hero-inner { position: relative; z-index: 2; max-width: 720px; }
.page-hero h1 { font-size: clamp(32px, 4.4vw, 48px); }

/* ---- Cards / Grid ---- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-3); }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-4); align-items: center; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-3); }

.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-4);
  transition: border-color 220ms var(--ease), transform 220ms var(--ease);
}
.card:hover { border-color: var(--border-strong); transform: translateY(-3px); }
.card h3 { font-size: 19px; margin-bottom: 10px; }
.card p { margin-bottom: var(--space-2); font-size: 14.5px; }
.card-link { font-size: 14px; color: var(--accent); display: inline-flex; align-items: center; gap: 6px; font-weight: 600; }
.card-link svg { width: 14px; height: 14px; transition: transform 180ms var(--ease); }
.card-link:hover svg { transform: translateX(3px); }

.icon-badge {
  width: 44px; height: 44px;
  border-radius: 10px;
  background: var(--bg-elevated-2);
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: var(--space-2);
}
.icon-badge svg { width: 22px; height: 22px; stroke: var(--accent); }

/* ---- Steps ---- */
.steps { display: flex; flex-direction: column; gap: var(--space-3); }
.step {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: var(--space-3);
  padding: var(--space-4) 0;
  border-top: 1px solid var(--border);
}
.step:first-child { border-top: none; }
.step-num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  width: 44px; height: 44px;
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
}
.step h3 { font-size: 21px; margin-bottom: 8px; }
.step p { font-size: 15px; max-width: 560px; }

/* ---- Illustrative widgets (reused across pages) ---- */
.widget {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 30px 60px -30px rgba(0,0,0,0.6);
}
.widget-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elevated-2);
}
.widget-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--border-strong); }
.widget-bar .label {
  margin-left: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
}
.widget-body { padding: var(--space-3); }

/* outreach status table widget */
.status-table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.status-table th {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-dim);
  padding: 0 10px 10px;
  font-weight: 500;
}
.status-table td { padding: 12px 10px; border-top: 1px solid var(--border); color: var(--text); }
.status-table tr:first-child td { border-top: none; }
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 20px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.02em;
}
.status-pill::before { content: ""; width: 6px; height: 6px; border-radius: 50%; }
.status-contacted { background: rgba(141,150,172,0.12); color: var(--text-muted); }
.status-contacted::before { background: var(--text-muted); }
.status-replied { background: rgba(251,191,36,0.12); color: var(--warn); }
.status-replied::before { background: var(--warn); }
.status-booked { background: rgba(52,211,153,0.14); color: var(--success); }
.status-booked::before { background: var(--success); box-shadow: 0 0 8px rgba(52,211,153,0.6); }

/* flow visualization widget */
.flow { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: var(--space-2) 0; }
.flow-node {
  flex: 1;
  text-align: center;
  padding: var(--space-3) var(--space-2);
  background: var(--bg-elevated-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.flow-node .flow-icon {
  width: 34px; height: 34px;
  margin: 0 auto 10px;
  border-radius: 8px;
  background: rgba(56,189,248,0.1);
  display: flex; align-items: center; justify-content: center;
}
.flow-node .flow-icon svg { width: 18px; height: 18px; stroke: var(--accent); }
.flow-node .flow-label { font-family: var(--font-mono); font-size: 11px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 4px; }
.flow-node .flow-text { font-size: 13px; color: var(--text); font-weight: 500; }
.flow-arrow { flex: none; width: 22px; height: 22px; color: var(--text-dim); }
.flow-arrow svg { width: 100%; height: 100%; }

@media (max-width: 720px) {
  .flow { flex-direction: column; }
  .flow-arrow { transform: rotate(90deg); }
}

/* ---- FAQ accordion ---- */
.faq-list { border-top: 1px solid var(--border); }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-3) 0;
  text-align: left;
  font-family: var(--font-heading);
  font-size: 17px;
  font-weight: 600;
  min-height: 44px;
}
.faq-q svg { width: 18px; height: 18px; flex: none; transition: transform 220ms var(--ease); color: var(--text-dim); }
.faq-item.open .faq-q svg { transform: rotate(45deg); color: var(--accent); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 320ms var(--ease); }
.faq-a-inner { padding-bottom: var(--space-3); max-width: 640px; }
.faq-a p { font-size: 15px; }

/* ---- CTA band ---- */
.cta-band {
  position: relative;
  border-radius: 20px;
  padding: var(--space-6) var(--space-5);
  text-align: center;
  background: linear-gradient(180deg, var(--bg-elevated), var(--bg-elevated-2));
  border: 1px solid var(--border);
  overflow: hidden;
}
.cta-band h2 { font-size: clamp(26px, 3.6vw, 38px); max-width: 620px; margin: 0 auto var(--space-2); }
.cta-band p { max-width: 480px; margin: 0 auto var(--space-3); }
.cta-band .btn { margin: 0 auto; }
.cta-band-actions { display: flex; justify-content: center; }

/* ---- Footer ---- */
.site-footer { border-top: 1px solid var(--border); padding: var(--space-5) 0 var(--space-4); }
.footer-inner { display: flex; justify-content: space-between; gap: var(--space-4); flex-wrap: wrap; }
.footer-col h4 { font-family: var(--font-mono); font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-dim); margin-bottom: 12px; font-weight: 500; }
.footer-col p, .footer-col a { font-size: 14px; color: var(--text-muted); display: block; margin-bottom: 6px; }
.footer-col a:hover { color: var(--text); }
.footer-bottom {
  margin-top: var(--space-5);
  padding-top: var(--space-3);
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-dim);
}

/* ---- Reveal animation base state (GSAP takes over via JS) ---- */
.reveal { visibility: visible; }
.no-js .reveal, .no-webgl .hero-canvas-wrap { display: none; }

/* ---- Sector page specifics ---- */
.sector-badge {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 12px; color: var(--text-dim);
  margin-bottom: var(--space-2);
}
.sector-badge .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }

.two-col { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: var(--space-5); align-items: start; }

.check-list { display: flex; flex-direction: column; gap: 14px; margin: var(--space-3) 0; }
.check-list li { display: flex; gap: 12px; font-size: 15px; color: var(--text); align-items: flex-start; }
.check-list svg { width: 20px; height: 20px; flex: none; stroke: var(--success); margin-top: 1px; }

/* ---- Responsive ---- */
@media (max-width: 980px) {
  .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-2, .two-col { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; gap: var(--space-3); }
}

@media (max-width: 860px) {
  .nav-links {
    position: fixed;
    top: 76px; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    padding: var(--space-2) var(--space-3) var(--space-3);
    gap: 4px;
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 220ms var(--ease), transform 220ms var(--ease), visibility 220ms;
  }
  .nav-links.open { opacity: 1; visibility: visible; transform: translateY(0); }
  .nav-links a:not(.btn) { padding: 12px 4px; border-bottom: 1px solid var(--border); }
  .nav-links .btn { margin-top: 8px; align-self: flex-start; }
  .nav-toggle { display: flex; }
  .has-dropdown svg { transform: rotate(90deg); }
  .dropdown {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    display: none;
    box-shadow: none;
    border: none;
    background: transparent;
    padding: 0 0 0 12px;
  }
  .nav-dropdown-item.open .dropdown { display: block; }
}

@media (max-width: 640px) {
  .hero { padding: 150px 0 var(--space-5); min-height: auto; }
  .section { padding: var(--space-5) 0; }
  .cta-band { padding: var(--space-5) var(--space-3); }
  h1 { font-size: 34px !important; }
}