/* ============================================================
   RenErgy, LLC — Corporate Website Stylesheet
   Green & Black Theme
   ============================================================ */

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --black:      #0A0A0A;
  --dark:       #141414;
  --charcoal:   #1E1E1E;
  --dark-gray:  #2A2A2A;
  --mid-gray:   #4A4A4A;
  --steel:      #6B6B6B;
  --light-gray: #F0F2F0;
  --off-white:  #F7F8F7;
  --white:      #FFFFFF;
  --green:      #00C853;      /* vibrant energy green */
  --green-dark: #00A844;
  --green-deeper:#008836;
  --green-glow: rgba(0,200,83,0.25);
  --green-subtle:#E8F5E9;
  --text:       #1A1A1A;
  --text-light: #555;
  --font-main:  'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-heading:'Georgia', 'Times New Roman', serif;
  --max-width:  1200px;
  --radius:     6px;
  --shadow:     0 2px 12px rgba(0,0,0,0.1);
  --shadow-lg:  0 8px 30px rgba(0,0,0,0.18);
  --transition: 0.3s ease;
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  color: var(--text);
  line-height: 1.7;
  background: var(--white);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--green-deeper); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--green); }

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

/* --- Typography --- */
h1, h2, h3, h4 { font-family: var(--font-heading); color: var(--black); line-height: 1.25; }
h1 { font-size: clamp(2rem, 4vw, 3rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.25rem); margin-bottom: 16px; }
h3 { font-size: 1.35rem; margin-bottom: 12px; }
p  { margin-bottom: 16px; }

.section-subtitle {
  color: var(--green);
  font-family: var(--font-main);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

/* --- Header / Nav --- */
.site-header {
  background: var(--black);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  max-width: var(--max-width);
  margin: 0 auto;
  height: 72px;
}
.logo {
  font-family: var(--font-heading);
  font-size: 2rem;
  color: var(--white);
  font-weight: 700;
  letter-spacing: 0.5px;
  font-style: italic;
}
.logo span { color: var(--green); }

/* Hamburger */
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span {
  display: block; width: 24px; height: 2px;
  background: var(--white); margin: 5px 0;
  transition: var(--transition);
}

.main-nav ul {
  list-style: none; display: flex; gap: 32px; align-items: center;
}
.main-nav a {
  color: rgba(255,255,255,0.8);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 8px 0;
  position: relative;
  transition: color var(--transition);
}
.main-nav a::after {
  content: '';
  position: absolute; bottom: 0; left: 0;
  width: 0; height: 2px;
  background: var(--green);
  transition: width var(--transition);
}
.main-nav a:hover, .main-nav a.active { color: var(--white); }
.main-nav a:hover::after, .main-nav a.active::after { width: 100%; }

/* --- Hero --- */
.hero {
  background: linear-gradient(135deg, var(--black) 0%, var(--dark) 50%, var(--charcoal) 100%);
  color: var(--white);
  padding: 100px 24px 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%2300C853' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.6;
}
.hero .container { position: relative; z-index: 1; }
.hero h1 { margin-bottom: 20px; color: var(--white); font-size: clamp(2rem, 4vw, 3rem); }
.hero p {
  font-size: 1.15rem; color: rgba(255,255,255,0.8);
  max-width: 650px; margin: 0 auto 32px;
  line-height: 1.8;
}
.hero-sub { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* --- Split hero layout --- */
.hero-split { text-align: left; padding: 80px 24px; }
.hero-split .hero-sub { justify-content: flex-start; }
.hero-split .hero p { margin: 0 0 32px; }
.hero-split h1 { font-size: clamp(1.75rem, 3.2vw, 2.5rem); line-height: 1.2; }

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: center;
  max-width: var(--max-width);
}
.hero-text { position: relative; z-index: 2; }
.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-power-img {
  width: 340px;
  height: 340px;
  object-fit: contain;
  filter: drop-shadow(0 0 30px rgba(0,200,83,0.3));
}
@media (max-width: 768px) {
  .hero-power-symbol {
    width: 250px;
    height: 250px;
    right: -10%;
  }
}

/* Page-level hero (smaller) */
.page-hero {
  background: linear-gradient(135deg, var(--black), var(--charcoal));
  color: var(--white);
  padding: 60px 24px 48px;
  text-align: center;
}
.page-hero-split {
  text-align: left;
  padding: 80px 24px;
  overflow: hidden;
}
.page-hero-split .hero-power-img {
  width: 340px;
  height: 340px;
}
.page-hero-split .hero-grid {
  grid-template-columns: 1.2fr 0.8fr;
}
.page-hero h1 { color: var(--white); margin-bottom: 12px; }
.page-hero p { color: rgba(255,255,255,0.75); max-width: 600px; margin: 0 auto; font-size: 1.05rem; }
.page-hero.page-hero-split p { max-width: none; margin: 0 0 16px; text-align: left; }
.page-hero.page-hero-split h1 { text-align: left; }
.page-hero.page-hero-split .section-subtitle { text-align: left; }

/* --- Buttons --- */
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
  text-align: center;
}
.btn-primary {
  background: var(--green);
  color: var(--black);
}
.btn-primary:hover {
  background: var(--green-dark);
  color: var(--black);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px var(--green-glow);
}
.btn-outline {
  border-color: rgba(255,255,255,0.4);
  color: var(--white);
  background: transparent;
}
.btn-outline:hover {
  border-color: var(--green);
  color: var(--green);
  background: rgba(0,200,83,0.05);
}
.btn-dark {
  background: var(--black);
  color: var(--white);
}
.btn-dark:hover {
  background: var(--charcoal);
  color: var(--green);
  transform: translateY(-1px);
}

/* --- Sections --- */
.section {
  padding: 80px 24px;
}
.section-alt {
  background: var(--light-gray);
}
.section-dark {
  background: var(--black);
  color: var(--white);
}
.section-header {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 48px;
}
.section-header p {
  color: var(--text-light);
  font-size: 1.05rem;
}

/* --- Cards --- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
}
.card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 36px 28px;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
  border-top: 3px solid transparent;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-top-color: var(--green);
}
.card-icon {
  width: 56px; height: 56px;
  background: var(--green-subtle);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
  font-size: 1.5rem;
  color: var(--green-deeper);
}
.card h3 { font-size: 1.2rem; }
.card p { color: var(--text-light); font-size: 0.95rem; margin-bottom: 0; }

/* Dark cards (for dark sections) */
.card-dark {
  background: var(--charcoal);
  border-top-color: var(--dark-gray);
}
.card-dark:hover { border-top-color: var(--green); }
.card-dark h3 { color: var(--white); }
.card-dark p { color: rgba(255,255,255,0.65); }
.card-dark .card-icon { background: var(--dark-gray); color: var(--green); }

/* --- Stats Bar --- */
.stats-bar {
  background: var(--charcoal);
  padding: 48px 24px;
  border-top: 1px solid var(--dark-gray);
  border-bottom: 1px solid var(--dark-gray);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 32px;
  text-align: center;
}
.stat-item h3 {
  font-size: 2.5rem;
  color: var(--green);
  font-family: var(--font-main);
  font-weight: 700;
  margin-bottom: 4px;
}
.stat-item p {
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin: 0;
}

/* --- Two-column layout --- */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
.two-col-text h2 { margin-bottom: 16px; }
.two-col-text p { color: var(--text-light); }
.two-col-visual {
  background: var(--light-gray);
  border-radius: var(--radius);
  padding: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 300px;
}

/* --- Team Grid --- */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 32px;
}
.team-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
  text-align: center;
}
.team-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.team-card-photo {
  background: linear-gradient(135deg, var(--black), var(--charcoal));
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.4);
  font-size: 3.5rem;
}
.team-card-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.team-card-body {
  padding: 24px 20px;
}
.team-card-body h3 { font-size: 1.15rem; margin-bottom: 4px; }
.team-card-body .team-role {
  color: var(--green-deeper);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
  display: block;
}
.team-card-body p { color: var(--text-light); font-size: 0.9rem; margin-bottom: 0; }

/* --- Expertise List --- */
.expertise-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}
.expertise-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px;
  background: var(--white);
  border-radius: var(--radius);
  border-left: 3px solid var(--green);
}
.expertise-item .check {
  color: var(--green);
  font-weight: 700;
  font-size: 1.1rem;
  flex-shrink: 0;
  margin-top: 1px;
}
.expertise-item span { font-size: 0.95rem; }

/* --- Contact Form --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
}
.contact-info-card {
  background: var(--black);
  color: var(--white);
  border-radius: var(--radius);
  padding: 40px 32px;
}
.contact-info-card h3 { color: var(--white); margin-bottom: 20px; }
.contact-detail {
  display: flex; align-items: flex-start; gap: 14px;
  margin-bottom: 24px;
}
.contact-detail .icon {
  width: 40px; height: 40px;
  background: rgba(0,200,83,0.1);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  font-size: 1rem;
  color: var(--green);
}
.contact-detail p { margin: 0; color: rgba(255,255,255,0.8); font-size: 0.95rem; }
.contact-detail strong { display: block; color: var(--white); margin-bottom: 2px; }

.contact-form {
  background: var(--white);
  border-radius: var(--radius);
  padding: 40px 32px;
  box-shadow: var(--shadow);
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 6px;
  color: var(--black);
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid #D0D5DD;
  border-radius: var(--radius);
  font-family: var(--font-main);
  font-size: 0.95rem;
  transition: border-color var(--transition);
  background: var(--off-white);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px var(--green-glow);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* --- Project Cards --- */
.project-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}
.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.project-card-header {
  background: linear-gradient(135deg, var(--black), var(--charcoal));
  padding: 32px 28px;
  color: var(--white);
}
.project-card-header h3 { color: var(--white); margin-bottom: 4px; }
.project-card-header .tag {
  display: inline-block;
  background: rgba(0,200,83,0.15);
  color: var(--green);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-top: 8px;
}
.project-card-body {
  padding: 24px 28px;
}
.project-card-body p { color: var(--text-light); font-size: 0.95rem; }
.project-detail {
  display: flex; justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid var(--light-gray);
  font-size: 0.9rem;
}
.project-detail:last-child { border-bottom: none; }
.project-detail .label { color: var(--steel); }
.project-detail .value { font-weight: 600; color: var(--black); }

/* --- Footer --- */
.site-footer {
  background: var(--black);
  color: rgba(255,255,255,0.6);
  padding: 48px 24px 24px;
  border-top: 1px solid var(--dark-gray);
}
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand .logo { margin-bottom: 12px; }
.footer-brand p { font-size: 0.9rem; max-width: 300px; line-height: 1.6; }
.footer-col h4 {
  color: var(--white);
  font-family: var(--font-main);
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 16px;
}
.footer-col ul { list-style: none; display: flex; gap: 24px; }
.footer-col li { margin-bottom: 0; }
.footer-col a { color: rgba(255,255,255,0.55); font-size: 0.9rem; }
.footer-col a:hover { color: var(--green); }

.footer-bottom {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
}

/* --- CTA Section --- */
.cta-section {
  background: linear-gradient(135deg, var(--black), var(--charcoal));
  color: var(--white);
  text-align: center;
  padding: 80px 24px;
}
.cta-section h2 { color: var(--white); }
.cta-section p { color: rgba(255,255,255,0.7); }

/* --- Responsive --- */
@media (max-width: 900px) {
  .two-col { grid-template-columns: 1fr; gap: 32px; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-split { text-align: center; }
  .hero-split .hero-sub { justify-content: center; }
  .page-hero-split { text-align: center; }
  .hero-power-img { width: 200px; height: 200px; }
  .page-hero-split .hero-power-img { width: 200px; height: 200px; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; gap: 28px; }
  .footer-col ul { flex-wrap: wrap; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .main-nav {
    position: absolute;
    top: 72px; left: 0; right: 0;
    background: var(--black);
    border-top: 1px solid var(--dark-gray);
    display: none;
    padding: 16px 0;
  }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; gap: 0; padding: 0 24px; }
  .main-nav li { border-bottom: 1px solid rgba(255,255,255,0.05); }
  .main-nav a { display: block; padding: 14px 0; }
  .hero { padding: 60px 24px 50px; }
  .hero-visual { order: -1; }
  .section { padding: 50px 24px; }
  .form-row { grid-template-columns: 1fr; }
  .card-grid { grid-template-columns: 1fr !important; }
  .team-grid { grid-template-columns: 1fr; }
}