/* ===================================================
   NORTHLINE DAG — styles.css
   Colors: Navy #1a2744 | Teal #2cbfb1 | Off-white #f5f6f8
   =================================================== */

:root {
  --navy:       #1a2744;
  --navy-light: #223060;
  --teal:       #2cbfb1;
  --teal-1:     #a8ece8;   /* card 1 — lightest */
  --teal-2:     #5dd4cb;   /* card 2 */
  --teal-3:     #2cbfb1;   /* card 3 */
  --teal-4:     #0d9a90;   /* card 4 — deepest */
  --off-white:  #f5f6f8;
  --white:      #ffffff;
  --body-text:  #3d4f6b;
  --nav-h:      70px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-h);
}

body {
  font-family: 'Space Grotesk', sans-serif;
  color: var(--navy);
  background: var(--white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

a { text-decoration: none; }

/* ===== SHARED CONTAINER ===== */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ===================================================
   NAV
   =================================================== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  height: var(--nav-h);
  background: var(--white);
  border-bottom: 1px solid rgba(26, 39, 68, 0.09);
  backdrop-filter: blur(8px);
}

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

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  color: var(--navy);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: -0.01em;
}

.nav-logo img {
  width: 34px;
  height: 34px;
  border-radius: 6px;
  flex-shrink: 0;
}

.nav-brand { line-height: 1; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-link {
  color: var(--navy);
  font-weight: 500;
  font-size: 0.9375rem;
  position: relative;
  transition: color 0.2s ease;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0; right: 0;
  height: 2px;
  background: var(--teal);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.22s ease;
}

.nav-link:hover { color: var(--teal); }
.nav-link:hover::after { transform: scaleX(1); }

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px 4px;
  width: 36px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--navy);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.2s ease;
}

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

/* ===================================================
   HERO
   =================================================== */
.hero {
  background: var(--navy);
  min-height: 100vh;
  padding-top: var(--nav-h);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

#hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 1140px;
  margin: 0 auto;
  padding: 5rem 2rem 6rem;
  width: 100%;
  text-align: center;
}

.hero-title {
  font-size: clamp(4.5rem, 11vw, 9.5rem);
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.03em;
  line-height: 0.95;
  margin-bottom: 1.25rem;
}

.hero-subtitle {
  font-size: clamp(1.5rem, 3.5vw, 2.75rem);
  font-weight: 600;
  color: var(--white);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.teal-letter {
  color: var(--teal);
}

.hero-cu {
  font-size: clamp(0.9rem, 1.6vw, 1.125rem);
  font-weight: 400;
  color: rgba(255, 255, 255, 0.55);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

/* ===================================================
   MISSION
   =================================================== */
.mission {
  background: var(--off-white);
  padding: 7rem 0;
}

.mission-headline {
  font-size: clamp(1.375rem, 2.75vw, 2.125rem);
  font-weight: 600;
  color: var(--navy);
  line-height: 1.38;
  text-align: center;
  max-width: 820px;
  margin: 0 auto 2rem;
}

.mission-divider {
  width: 48px;
  height: 1.5px;
  background: var(--teal);
  border: none;
  margin: 0 auto 2rem;
  opacity: 0.7;
}

.mission-body {
  font-size: 1.1875rem;
  font-weight: 400;
  color: var(--body-text);
  line-height: 1.8;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

/* ===================================================
   WHAT WE DO
   =================================================== */
.what-we-do {
  background: var(--white);
  padding: 7rem 0 0;
}

.section-heading {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--navy);
  letter-spacing: -0.025em;
  margin-bottom: 3rem;
  text-align: center;
}

/* Cards */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-bottom: 5rem;
}

.service-card {
  background: var(--white);
  border: 1px solid #e2e6ee;
  border-top: 4px solid transparent;
  border-radius: 10px;
  padding: 2rem 1.5rem 1.75rem;
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 16px 40px rgba(26, 39, 68, 0.1);
}

.card-1 { border-top-color: var(--teal-1); }
.card-2 { border-top-color: var(--teal-2); }
.card-3 { border-top-color: var(--teal-3); }
.card-4 { border-top-color: var(--teal-4); }

.card-icon {
  width: 44px;
  height: 44px;
  color: var(--teal);
  margin-bottom: 1.25rem;
}

.card-icon svg { width: 100%; height: 100%; }

.card-name {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--navy);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.card-desc {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--navy);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.card-outcome {
  font-size: 0.875rem;
  font-style: italic;
  color: #6b7fa0;
  line-height: 1.6;
}

/* ===================================================
   MARQUEE
   =================================================== */
.marquee-wrap {
  background: var(--navy);
  overflow: hidden;
  padding: 1.125rem 0;
}

.marquee-track {
  display: flex;
  width: max-content;
}

.marquee-inner {
  display: flex;
  align-items: center;
  white-space: nowrap;
  animation: scroll-left 35s linear infinite;
}

.marquee-inner span {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--white);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0 1.375rem;
}

.marquee-inner .mdot {
  color: var(--teal);
  font-size: 1.125rem;
  padding: 0;
  line-height: 1;
}

@keyframes scroll-left {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ===================================================
   ABOUT
   =================================================== */
.about {
  background: var(--off-white);
  padding: 7rem 0;
}

.about-grid {
  display: grid;
  grid-template-columns: 340px 1fr;
  align-items: center;
  gap: 5rem;
}

.about-photo-col { display: flex; justify-content: center; }

.headshot {
  width: 100%;
  max-width: 300px;
  border-radius: 50%;
  box-shadow: 0 20px 60px rgba(26, 39, 68, 0.15);
}

.about-name {
  font-size: clamp(1.625rem, 2.5vw, 2rem);
  font-weight: 700;
  color: var(--navy);
  letter-spacing: -0.025em;
  margin-bottom: 0.25rem;
}

.about-role {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--teal-4);
  margin-bottom: 1.625rem;
}

.about-text {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--body-text);
  margin-bottom: 2rem;
}

.credentials {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
}

.credential {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--navy);
  background: var(--white);
  border: 1.5px solid var(--teal);
  border-radius: 100px;
  padding: 0.375rem 1rem;
  letter-spacing: 0.01em;
}

/* ===================================================
   CONTACT
   =================================================== */
.contact {
  background: var(--navy);
  padding: 7rem 0;
}

.contact-inner { text-align: center; }

.contact-pre {
  font-size: 0.9375rem;
  font-weight: 500;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.contact-heading {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.025em;
  margin-bottom: 2rem;
}

.btn-primary {
  display: inline-block;
  background: var(--teal);
  color: var(--navy);
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  padding: 1rem 2.25rem;
  border-radius: 8px;
  text-decoration: none;
  transition: background 0.2s, transform 0.15s;
}

.btn-primary:hover {
  background: #38d5c7;
  transform: translateY(-2px);
}

.btn-primary:active { transform: translateY(0); }

.contact-secondary {
  margin-top: 1.25rem;
  margin-bottom: 3rem;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.45);
}

.contact-secondary-link {
  color: rgba(255,255,255,0.65);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s;
}

.contact-secondary-link:hover { color: var(--teal); }

.contact-form {
  max-width: 540px;
  margin: 0 auto;
  text-align: left;
  display: grid;
  grid-template-rows: 0fr;
  opacity: 0;
  transition: grid-template-rows 0.4s ease, opacity 0.35s ease;
  overflow: hidden;
}

.contact-form .form-inner {
  min-height: 0;
}

.contact-form.expanded {
  grid-template-rows: 1fr;
  opacity: 1;
  margin-top: 2rem;
}

.form-group { margin-bottom: 1.125rem; }

.form-group label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.75);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.req { color: var(--teal); }

.form-group input,
.form-group textarea {
  width: 100%;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.9375rem;
  color: var(--white);
  background: rgba(255, 255, 255, 0.06);
  border: 1.5px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  outline: none;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(255, 255, 255, 0.3); }

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--teal);
  background: rgba(255, 255, 255, 0.1);
}

.form-group textarea { resize: vertical; min-height: 130px; }

.submit-btn {
  display: block;
  width: 100%;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--navy);
  background: var(--teal);
  border: none;
  border-radius: 8px;
  padding: 0.9rem 2rem;
  margin-top: 0.5rem;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.15s ease;
}

.submit-btn:hover:not(:disabled) {
  background: #38d6c8;
  transform: translateY(-1px);
}

.submit-btn:active:not(:disabled) { transform: translateY(0); }
.submit-btn:disabled { opacity: 0.6; cursor: not-allowed; }

.form-success {
  color: var(--teal);
  font-size: 1rem;
  font-weight: 500;
  margin-top: 1.25rem;
  padding: 0.75rem 1rem;
  text-align: center;
}

.form-error {
  color: #ff7f7f;
  font-size: 0.875rem;
  margin-top: 1rem;
  text-align: center;
}

.contact-divider {
  max-width: 540px;
  margin: 3rem auto 2rem;
  border: none;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-links {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2.5rem;
  flex-wrap: wrap;
}

.contact-links a {
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

.contact-links a:hover { color: var(--teal); }

/* ===================================================
   FOOTER
   =================================================== */
.footer {
  background: var(--navy);
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  padding: 1.75rem 0;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.footer-logo {
  width: 30px;
  height: 30px;
  border-radius: 4px;
  opacity: 0.9;
}

.footer-copy {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.4);
}

/* ===================================================
   RESPONSIVE
   =================================================== */

/* Tablet: 2×2 cards */
@media (max-width: 1060px) {
  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
  }

  .about-grid {
    grid-template-columns: 260px 1fr;
    gap: 3rem;
  }
}

/* Mobile nav & layout */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-h);
    left: 0; right: 0;
    background: var(--white);
    flex-direction: column;
    gap: 0;
    padding: 0.5rem 0 1rem;
    border-bottom: 1px solid rgba(26, 39, 68, 0.08);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  }

  .nav-links.open { display: flex; }

  .nav-link {
    padding: 0.875rem 2rem;
    width: 100%;
  }

  .nav-link::after { display: none; }

  .nav-toggle { display: flex; }

  /* Hero */
  .hero-sub {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.5rem;
  }

  .hero-tagline { max-width: 100%; }

  /* Cards: single column on small mobile */
  .cards-grid { grid-template-columns: 1fr; }

  /* About: stack */
  .about-grid {
    grid-template-columns: 1fr;
    gap: 2.25rem;
  }

  .about-photo-col { justify-content: center; }

  .headshot { max-width: 220px; }

  /* Footer */
  .footer-inner {
    flex-direction: column;
    text-align: center;
    gap: 0.5rem;
  }
}

/* Keep 2×2 on mid-sized mobile */
@media (min-width: 500px) and (max-width: 768px) {
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .contact-links {
    flex-direction: column;
    gap: 1rem;
  }
}