/* ============================================
   DETROIT NIL DEVELOPMENT — Site Styles
   ============================================ */
:root {
  --navy: #0a0f1e;
  --navy-2: #111a30;
  --navy-3: #1a2745;
  --blue: #1e90ff;
  --blue-bright: #38bdf8;
  --orange: #ff6b1a;
  --white: #ffffff;
  --gray: #9aa5b8;
  --gray-light: #cbd5e1;
  --max: 1140px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--navy);
  color: var(--gray-light);
  line-height: 1.65;
  font-size: 17px;
}

h1, h2, h3, h4, .logo, .btn {
  font-family: 'Archivo Black', 'Arial Black', sans-serif;
  color: var(--white);
  line-height: 1.15;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

h1 { font-size: clamp(2.4rem, 6vw, 4.2rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); margin-bottom: 1rem; }
h3 { font-size: 1.15rem; margin-bottom: 0.6rem; color: var(--blue-bright); }

p { margin-bottom: 1rem; }

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

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

/* ---------- NAV ---------- */
header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(10, 15, 30, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 2px solid var(--orange);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px; max-width: var(--max); margin: 0 auto;
}
.logo { font-size: 1.25rem; color: var(--white); }
.logo span { color: var(--orange); }
.nav-links { display: flex; gap: 28px; list-style: none; }
.nav-links a {
  color: var(--gray-light); font-weight: 600; font-size: 0.9rem;
  text-transform: uppercase; letter-spacing: 0.08em;
  transition: color 0.2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--orange); }
.nav-toggle { display: none; background: none; border: none; color: var(--white); font-size: 1.6rem; cursor: pointer; }

/* ---------- HERO ---------- */
.hero {
  position: relative;
  padding: 110px 24px 90px;
  text-align: center;
  background:
    radial-gradient(ellipse at 20% 10%, rgba(30, 144, 255, 0.18), transparent 55%),
    radial-gradient(ellipse at 80% 90%, rgba(255, 107, 26, 0.15), transparent 55%),
    var(--navy);
  overflow: hidden;
}
.hero::after {
  content: "313";
  position: absolute; right: -40px; bottom: -60px;
  font-family: 'Archivo Black', sans-serif;
  font-size: 22rem; color: rgba(255, 255, 255, 0.03);
  pointer-events: none; line-height: 1;
}
.hero .kicker {
  color: var(--orange); font-weight: 800; letter-spacing: 0.25em;
  text-transform: uppercase; font-size: 0.85rem; margin-bottom: 18px;
}
.hero h1 span { color: var(--blue-bright); }
.hero p.lead {
  max-width: 680px; margin: 22px auto 34px; font-size: 1.15rem; color: var(--gray-light);
}

.page-hero { padding: 70px 24px 50px; }

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-block;
  padding: 15px 34px;
  font-size: 0.95rem;
  border-radius: 4px;
  transition: transform 0.15s, box-shadow 0.15s;
}
.btn-primary { background: var(--orange); color: var(--navy); }
.btn-secondary { background: transparent; color: var(--white); border: 2px solid var(--blue); margin-left: 12px; }
.btn:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(255, 107, 26, 0.35); }

/* ---------- SECTIONS ---------- */
section { padding: 72px 0; }
section.alt { background: var(--navy-2); }
.section-label {
  color: var(--orange); font-weight: 800; letter-spacing: 0.22em;
  text-transform: uppercase; font-size: 0.8rem; margin-bottom: 10px;
}

/* ---------- GRIDS & CARDS ---------- */
.grid { display: grid; gap: 22px; margin-top: 34px; }
.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(--navy-3);
  border-left: 4px solid var(--blue);
  border-radius: 6px;
  padding: 26px;
}
.card.accent { border-left-color: var(--orange); }
.card ul { list-style: none; }
.card ul li { padding: 5px 0 5px 22px; position: relative; }
.card ul li::before {
  content: "▸"; position: absolute; left: 0; color: var(--orange);
}

/* Mission words */
.mission-words {
  display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; margin-top: 28px;
}
.mission-words span {
  font-family: 'Archivo Black', sans-serif;
  font-size: clamp(1rem, 2.2vw, 1.5rem);
  text-transform: uppercase;
  color: var(--white);
  background: var(--navy-3);
  border-bottom: 3px solid var(--orange);
  padding: 12px 26px; border-radius: 4px;
}

/* Comparison table */
.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-top: 34px; }
.compare .col { border-radius: 6px; padding: 30px; }
.compare .old { background: #131b2e; border-top: 4px solid var(--gray); }
.compare .new { background: linear-gradient(160deg, #14213f, #1a2b52); border-top: 4px solid var(--orange); }
.compare h3 { color: var(--white); }
.compare .old h3 { color: var(--gray); }
.compare ul { list-style: none; margin-top: 14px; }
.compare li { padding: 8px 0 8px 26px; position: relative; border-bottom: 1px solid rgba(255,255,255,0.06); }
.compare .old li::before { content: "✕"; position: absolute; left: 0; color: var(--gray); }
.compare .new li::before { content: "✓"; position: absolute; left: 0; color: var(--orange); font-weight: bold; }

/* Sport tiles */
.sports { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 14px; margin-top: 30px; }
.sport {
  background: var(--navy-3); text-align: center; padding: 26px 10px;
  border-radius: 6px; font-family: 'Archivo Black', sans-serif;
  text-transform: uppercase; font-size: 0.85rem; color: var(--white);
  border-bottom: 3px solid var(--blue);
  transition: transform 0.15s, border-color 0.15s;
}
.sport:hover { transform: translateY(-4px); border-color: var(--orange); }
.sport .icon { display: block; font-size: 1.8rem; margin-bottom: 8px; }

/* Phases */
.phase {
  display: grid; grid-template-columns: 90px 1fr; gap: 24px;
  background: var(--navy-3); border-radius: 6px; padding: 30px;
  margin-top: 20px; align-items: start;
}
.phase-num {
  font-family: 'Archivo Black', sans-serif; font-size: 2.6rem;
  color: var(--orange); line-height: 1;
}
.phase-num small { display: block; font-size: 0.65rem; color: var(--gray); letter-spacing: 0.2em; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.tags span {
  background: rgba(30, 144, 255, 0.12); border: 1px solid rgba(56, 189, 248, 0.35);
  color: var(--blue-bright); font-size: 0.8rem; font-weight: 600;
  padding: 5px 12px; border-radius: 999px;
}

/* Structure flow */
.flow { margin-top: 34px; }
.flow .tier {
  background: var(--navy-3); border-radius: 6px; padding: 28px; text-align: center;
  border-top: 4px solid var(--blue);
}
.flow .tier.mid { border-top-color: var(--orange); }
.flow .arrow { text-align: center; font-size: 1.8rem; color: var(--orange); padding: 10px 0; }

/* Stats band */
.band {
  background: linear-gradient(90deg, var(--blue) 0%, #0b62c4 100%);
  padding: 54px 0; text-align: center;
}
.band h2 { color: var(--white); margin-bottom: 6px; }
.band p { color: rgba(255,255,255,0.9); max-width: 720px; margin: 0 auto; }

/* CTA */
.cta {
  text-align: center;
  background:
    radial-gradient(ellipse at 50% 120%, rgba(255, 107, 26, 0.2), transparent 60%),
    var(--navy-2);
}
.cta p { max-width: 640px; margin: 0 auto 30px; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 40px; margin-top: 34px; }
form label {
  display: block; font-weight: 700; color: var(--white);
  font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.08em;
  margin: 18px 0 6px;
}
form input, form select, form textarea {
  width: 100%; padding: 13px 14px;
  background: var(--navy-3); border: 1px solid rgba(255,255,255,0.12);
  border-radius: 4px; color: var(--white); font-family: inherit; font-size: 1rem;
}
form input:focus, form select:focus, form textarea:focus {
  outline: none; border-color: var(--orange);
}
form button { margin-top: 24px; border: none; cursor: pointer; }

/* Footer */
footer {
  background: #060a14; padding: 50px 0 30px;
  border-top: 2px solid var(--orange);
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; }
footer h4 { font-size: 0.9rem; margin-bottom: 14px; color: var(--orange); }
footer ul { list-style: none; }
footer ul li { margin-bottom: 8px; }
footer ul a { color: var(--gray); font-size: 0.95rem; }
footer ul a:hover { color: var(--white); }
.footer-bottom {
  text-align: center; color: var(--gray); font-size: 0.85rem;
  margin-top: 40px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,0.07);
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 860px) {
  .grid-2, .grid-3, .grid-4, .compare, .contact-grid, .footer-grid { grid-template-columns: 1fr; }
  .nav-links {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; background: var(--navy-2); padding: 20px 24px; gap: 16px;
    border-bottom: 2px solid var(--orange);
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
  .phase { grid-template-columns: 1fr; }
  .btn-secondary { margin-left: 0; margin-top: 12px; }
}