/* ===================================================
   SUMMIT AIR SOLUTIONS: Styles
   =================================================== */

/* ---- CSS Variables ---- */
:root {
  --navy:       #0d1f3c;
  --navy-mid:   #1a3a6e;
  --blue-light: #2c5aa0;
  --orange:     #f47b20;
  --orange-dark:#d96a10;
  --white:      #ffffff;
  --off-white:  #f6f8fc;
  --gray-100:   #f1f3f7;
  --gray-200:   #e2e6ef;
  --gray-400:   #9aa4b8;
  --gray-600:   #5a6478;
  --gray-800:   #2d3446;
  --text:       #1e2535;
  --radius:     12px;
  --radius-sm:  8px;
  --shadow:     0 4px 24px rgba(13,31,60,0.10);
  --shadow-lg:  0 8px 40px rgba(13,31,60,0.18);
  --transition: 0.25s ease;
  --header-h:   72px;
}

/* ---- Reset & Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Inter', Arial, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
h1,h2,h3,h4 { line-height: 1.2; font-weight: 700; }

/* ---- Container ---- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.3px;
  transition: all var(--transition);
  cursor: pointer;
  white-space: nowrap;
}
.btn-primary {
  background: var(--orange);
  color: var(--white);
  box-shadow: 0 2px 12px rgba(244,123,32,0.35);
}
.btn-primary:hover {
  background: var(--orange-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(244,123,32,0.45);
}
.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,0.6);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.12);
  border-color: var(--white);
  transform: translateY(-1px);
}
.btn-nav {
  background: var(--orange);
  color: var(--white) !important;
  padding: 9px 18px;
  border-radius: 6px;
  font-size: 0.875rem;
}
.btn-nav:hover { background: var(--orange-dark); }
.btn-hiring {
  background: var(--orange);
  color: var(--white);
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  display: inline-flex;
  gap: 8px;
  align-items: center;
  margin-top: 16px;
}
.btn-hiring svg { width: 16px; height: 16px; }
.btn-hiring:hover { background: var(--orange-dark); transform: translateY(-1px); }

/* ===================================================
   HEADER / NAV
   =================================================== */
#site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(13,31,60,0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  transition: box-shadow var(--transition);
}
#site-header.scrolled {
  box-shadow: 0 2px 24px rgba(0,0,0,0.25);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
}

/* Logo */
.logo {
  display: flex;
  align-items: baseline;
  gap: 4px;
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: 1px;
}
.logo-premier { color: var(--white); }
.logo-hvac    { color: var(--orange); }
.logo-sales   { color: var(--gray-400); font-weight: 500; font-size: 1rem; }

/* Nav links */
#main-nav ul {
  display: flex;
  align-items: center;
  gap: 4px;
}
#main-nav ul li a {
  display: block;
  padding: 8px 14px;
  color: rgba(255,255,255,0.82);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 6px;
  transition: color var(--transition), background var(--transition);
}
#main-nav ul li a:hover {
  color: var(--white);
  background: rgba(255,255,255,0.08);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: all 0.3s ease;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===================================================
   HERO
   =================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background:
    linear-gradient(135deg, rgba(13,31,60,0.92) 0%, rgba(26,58,110,0.85) 60%, rgba(44,90,160,0.8) 100%),
    url('https://images.unsplash.com/photo-1504328345606-18bbc8c9d7d1?w=1600&q=80') center/cover no-repeat;
  padding-top: var(--header-h);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(244,123,32,0.12) 0%, transparent 60%);
  pointer-events: none;
}

.hero-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: 80px;
  padding-bottom: 60px;
}

.hero-eyebrow {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 16px;
}

.hero h1 {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: clamp(2.8rem, 6vw, 5.2rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1.05;
  margin-bottom: 24px;
  text-transform: uppercase;
  letter-spacing: -0.5px;
}
.hero h1 .accent { color: var(--orange); }

.hero-sub {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.78);
  max-width: 540px;
  margin-bottom: 36px;
  line-height: 1.7;
}
.hero-sub strong { color: var(--white); }

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* Stats bar */
.hero-stats {
  background: rgba(255,255,255,0.06);
  border-top: 1px solid rgba(255,255,255,0.1);
  backdrop-filter: blur(8px);
  padding: 24px 0;
}
.stats-row {
  display: flex;
  align-items: center;
  gap: 0;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: 16px;
}
.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  flex: 1;
  min-width: 140px;
}
.stat-num {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.5px;
}
.stat-label {
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--gray-400);
  margin-top: 2px;
}
.stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,0.12);
  flex-shrink: 0;
}

/* ===================================================
   SECTION COMMON
   =================================================== */
.section { padding: 96px 0; }
.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}
.section-header.light h2,
.section-header.light .section-sub { color: var(--white); }
.section-header.light .section-sub { color: rgba(255,255,255,0.72); }
.section-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--orange);
  background: rgba(244,123,32,0.1);
  border: 1px solid rgba(244,123,32,0.25);
  padding: 4px 12px;
  border-radius: 50px;
  margin-bottom: 12px;
}
.section-header h2 {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  text-transform: uppercase;
  color: var(--navy);
  margin-bottom: 14px;
  letter-spacing: 0.5px;
}
.section-sub {
  font-size: 1rem;
  color: var(--gray-600);
  line-height: 1.7;
}

/* ===================================================
   MANUFACTURERS GRID
   =================================================== */
.manufacturers-section { background: var(--off-white); }

.manufacturers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
  margin-bottom: 48px;
}

.mfr-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: relative;
  overflow: hidden;
}
.mfr-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--navy-mid), var(--orange));
  opacity: 0;
  transition: opacity var(--transition);
}
.mfr-card:hover {
  border-color: transparent;
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.mfr-card:hover::before { opacity: 1; }

.mfr-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
}
.mfr-icon svg { width: 100%; height: 100%; }

.mfr-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--navy);
}
.mfr-card p {
  font-size: 0.88rem;
  color: var(--gray-600);
  line-height: 1.6;
  flex: 1;
}
.mfr-link {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--orange);
  letter-spacing: 0.2px;
  transition: color var(--transition);
}
.mfr-card:hover .mfr-link { color: var(--orange-dark); }

.mfr-cta { text-align: center; }

/* ===================================================
   WHAT'S NEW
   =================================================== */
.whats-new-section {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-mid) 100%);
  position: relative;
  overflow: hidden;
}
.whats-new-section::before {
  content: '';
  position: absolute;
  top: -40%; right: -10%;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(244,123,32,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.whats-new-section .section-tag {
  background: rgba(244,123,32,0.15);
  border-color: rgba(244,123,32,0.35);
}

.news-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 20px;
}

.news-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  padding: 28px;
  position: relative;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.news-card:hover {
  background: rgba(255,255,255,0.09);
  border-color: rgba(255,255,255,0.18);
  transform: translateY(-3px);
}
.news-card.featured {
  background: rgba(244,123,32,0.12);
  border-color: rgba(244,123,32,0.3);
}
.news-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  background: var(--orange);
  color: var(--white);
  padding: 3px 10px;
  border-radius: 50px;
  width: fit-content;
}
.news-icon {
  width: 40px; height: 40px;
  background: rgba(255,255,255,0.08);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--orange);
}
.news-icon svg { width: 20px; height: 20px; }
.news-card h3 {
  font-size: 1.1rem;
  color: var(--white);
}
.news-card p {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.65);
  line-height: 1.65;
  flex: 1;
}
.news-link {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--orange);
  transition: color var(--transition);
  margin-top: 6px;
}
.news-link:hover { color: #ffaa60; }

/* ===================================================
   ABOUT
   =================================================== */
.about-section { background: var(--white); }
.about-inner {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 80px;
  align-items: center;
}

.about-visual { position: relative; }
.about-badge-stack {
  position: relative;
  width: 260px;
  height: 260px;
}
.about-accent-box {
  position: absolute;
  top: 20px; left: 20px;
  width: 220px; height: 220px;
  background: var(--gray-100);
  border-radius: var(--radius);
  z-index: 0;
}
.about-badge {
  position: absolute;
  top: 0; left: 0;
  width: 220px; height: 220px;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-mid) 100%);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 1;
  box-shadow: var(--shadow-lg);
}
.badge-num {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 4.5rem;
  font-weight: 800;
  color: var(--orange);
  line-height: 1;
  letter-spacing: -1px;
}
.badge-text {
  font-size: 0.85rem;
  font-weight: 600;
  color: rgba(255,255,255,0.7);
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 8px;
  max-width: 140px;
}

.about-content .section-tag { margin-bottom: 12px; }
.about-content h2 {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800;
  text-transform: uppercase;
  color: var(--navy);
  margin-bottom: 18px;
  letter-spacing: 0.5px;
}
.about-content p {
  font-size: 0.97rem;
  color: var(--gray-600);
  line-height: 1.75;
  margin-bottom: 14px;
}

.about-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 22px 0 30px;
}
.about-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.93rem;
  font-weight: 500;
  color: var(--gray-800);
}
.about-list li svg {
  width: 18px; height: 18px;
  color: var(--orange);
  flex-shrink: 0;
}

/* ===================================================
   CONTACT
   =================================================== */
.contact-section {
  background: linear-gradient(135deg, var(--navy-mid) 0%, var(--navy) 100%);
}
.contact-section .section-tag {
  background: rgba(244,123,32,0.15);
  border-color: rgba(244,123,32,0.35);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.contact-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}
.contact-card:hover {
  background: rgba(255,255,255,0.1);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.2);
}
.contact-icon {
  width: 56px; height: 56px;
  background: rgba(244,123,32,0.15);
  border: 1px solid rgba(244,123,32,0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--orange);
  flex-shrink: 0;
}
.contact-icon svg { width: 24px; height: 24px; }
.contact-card h3 {
  font-size: 1.15rem;
  color: var(--white);
  font-weight: 700;
}
.contact-card p {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.6;
}
.contact-detail {
  font-size: 1rem;
  font-weight: 700;
  color: var(--orange);
  transition: color var(--transition);
}
.contact-detail:hover { color: #ffaa60; }

/* ===================================================
   FOOTER
   =================================================== */
#site-footer {
  background: #060f1e;
  color: rgba(255,255,255,0.7);
  padding-top: 64px;
}
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-logo {
  display: flex;
  align-items: baseline;
  gap: 5px;
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 800;
  font-size: 1.4rem;
  letter-spacing: 1px;
  margin-bottom: 14px;
}
.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 320px;
  margin-bottom: 16px;
}
.footer-phone {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--orange);
  letter-spacing: 0.5px;
  transition: color var(--transition);
}
.footer-phone:hover { color: #ffaa60; }

.footer-links h4,
.footer-social h4 {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--white);
  margin-bottom: 18px;
}
.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links ul li a {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.55);
  transition: color var(--transition);
}
.footer-links ul li a:hover { color: var(--orange); }

.social-links {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.social-links a {
  width: 40px; height: 40px;
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.7);
  transition: all var(--transition);
}
.social-links a svg { width: 16px; height: 16px; }
.social-links a:hover {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--white);
  transform: translateY(-2px);
}

.footer-bottom {
  padding: 20px 0;
}
.footer-bottom .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.footer-bottom p {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.35);
}

/* ===================================================
   RESPONSIVE
   =================================================== */
@media (max-width: 1024px) {
  .news-grid { grid-template-columns: 1fr 1fr; }
  .news-card.featured { grid-column: span 2; }
  .about-inner { grid-template-columns: 1fr; gap: 40px; }
  .about-visual { display: flex; justify-content: center; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: span 2; }
}

@media (max-width: 768px) {
  .hamburger { display: flex; }
  #main-nav {
    display: none;
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    background: var(--navy);
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 16px 0 24px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  }
  #main-nav.open { display: block; }
  #main-nav ul {
    flex-direction: column;
    gap: 0;
    padding: 0 16px;
  }
  #main-nav ul li a {
    padding: 12px 16px;
    font-size: 1rem;
    border-radius: var(--radius-sm);
  }
  .btn-nav { display: block; text-align: center; margin: 8px 0 0; }

  .hero h1 { font-size: clamp(2.2rem, 8vw, 3rem); }
  .hero-actions { flex-direction: column; max-width: 280px; }
  .stats-row { gap: 24px; }
  .stat-divider { display: none; }

  .section { padding: 64px 0; }

  .manufacturers-grid { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; }

  .news-grid { grid-template-columns: 1fr; }
  .news-card.featured { grid-column: span 1; }

  .contact-grid { grid-template-columns: 1fr; }

  .footer-inner { grid-template-columns: 1fr; }
  .footer-brand { grid-column: span 1; }
  .footer-bottom .container { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .manufacturers-grid { grid-template-columns: 1fr; }
  .about-badge-stack { width: 200px; height: 200px; }
  .about-badge { width: 180px; height: 180px; }
  .about-accent-box { width: 160px; height: 160px; }
  .badge-num { font-size: 3.5rem; }
}