/* IS Energy Consulting — Brand Stylesheet */
:root {
  --bg-dark: #0d2b3e;
  --bg-darker: #091f2c;
  --bg-card: #133549;
  --accent: #2ec4a5;
  --accent-light: #5de8c9;
  --accent-gradient: linear-gradient(135deg, #2ec4a5, #3ab8d8);
  --text-primary: #e8f0f4;
  --text-secondary: #9cb8c8;
  --text-muted: #6a8fa3;
  --border-color: rgba(46,196,165,0.2);
  --border-accent: rgba(46,196,165,0.5);
  --white: #ffffff;
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --max-width: 1200px;
  --shadow: 0 4px 24px rgba(0,0,0,0.3);
  --shadow-sm: 0 2px 12px rgba(0,0,0,0.2);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.3s ease;
}

/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body {
  font-family: var(--font-main);
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-light); }
img { max-width: 100%; display: block; }
ul { list-style: none; }

/* Typography */
h1, h2, h3, h4 { line-height: 1.25; font-weight: 700; }
h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); margin-bottom: 1rem; }
h3 { font-size: 1.3rem; margin-bottom: 0.5rem; }
p { color: var(--text-secondary); }

/* Layout */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
section { padding: 100px 0; }
.section-label {
  display: inline-block;
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 12px;
}
.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.15rem;
  max-width: 700px;
  margin-bottom: 48px;
}

/* ─── NAVBAR ─── */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(13,43,62,0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: background var(--transition);
}
.navbar .container {
  display: flex; align-items: center; justify-content: space-between;
  height: 80px;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 1.2rem; font-weight: 700; color: var(--white);
}
.nav-logo .logo-icon {
  width: 36px; height: 36px;
  background: var(--accent-gradient);
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem; color: var(--bg-darker);
}
.nav-links { display: flex; gap: 32px; align-items: center; }
.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9rem; font-weight: 500;
  transition: color var(--transition);
  position: relative;
}
.nav-links a:hover, .nav-links a.active { color: var(--white); }
.nav-links a.active::after {
  content: '';
  position: absolute; bottom: -4px; left: 0; right: 0;
  height: 2px; background: var(--accent); border-radius: 1px;
}
.nav-cta {
  background: var(--accent-gradient) !important;
  color: var(--bg-darker) !important;
  padding: 8px 20px; border-radius: 6px; font-weight: 600 !important;
}
.nav-cta:hover { opacity: 0.9; }

/* Mobile nav */
.nav-toggle {
  display: none; background: none; border: none; cursor: pointer;
  flex-direction: column; gap: 5px; padding: 4px;
}
.nav-toggle span {
  display: block; width: 24px; height: 2px;
  background: var(--text-primary); border-radius: 2px;
  transition: var(--transition);
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed; top: 80px; left: 0; right: 0;
    background: var(--bg-darker); flex-direction: column;
    padding: 24px; gap: 20px;
    transform: translateY(-120%); transition: transform var(--transition), visibility 0s linear 0.3s;
    border-bottom: 1px solid var(--border-color);
    visibility: hidden;
  }
  .nav-links.open { transform: translateY(0); visibility: visible; transition: transform var(--transition), visibility 0s linear 0s; }
}

/* ─── HERO ─── */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  position: relative; overflow: hidden; padding-top: 80px;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 70% 30%, rgba(46,196,165,0.08) 0%, transparent 60%),
              radial-gradient(ellipse at 20% 80%, rgba(58,184,216,0.06) 0%, transparent 50%);
  pointer-events: none;
}
.hero-content { position: relative; max-width: 720px; }
.hero-content h1 { margin-bottom: 20px; }
.hero-content h1 span {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-content p {
  font-size: 1.2rem; margin-bottom: 36px; max-width: 560px;
}
.hero-stats {
  display: flex; gap: 48px; margin-top: 48px;
  padding-top: 32px; border-top: 1px solid var(--border-color);
}
.hero-stat .number {
  font-size: 2.2rem; font-weight: 700; color: var(--accent);
}
.hero-stat .label {
  font-size: 0.85rem; color: var(--text-muted);
}
@media (max-width: 600px) {
  .hero-stats { flex-direction: column; gap: 20px; }
}

/* ─── BUTTONS ─── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 28px; border-radius: var(--radius-sm);
  font-size: 0.95rem; font-weight: 600;
  border: none; cursor: pointer; transition: all var(--transition);
}
.btn-primary {
  background: var(--accent-gradient); color: var(--bg-darker);
}
.btn-primary:hover { opacity: 0.9; transform: translateY(-1px); box-shadow: 0 4px 20px rgba(46,196,165,0.3); }
.btn-outline {
  background: transparent; color: var(--accent);
  border: 2px solid var(--border-accent);
}
.btn-outline:hover { background: rgba(46,196,165,0.1); border-color: var(--accent); color: var(--accent); }
.btn-group { display: flex; gap: 16px; flex-wrap: wrap; }

/* ─── CARDS ─── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 32px; transition: all var(--transition);
}
.card:hover {
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.card-icon {
  width: 52px; height: 52px;
  background: rgba(46,196,165,0.1);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; margin-bottom: 20px; color: var(--accent);
}

/* ─── GRID LAYOUTS ─── */
.grid-2 { display: grid; grid-template-columns: repeat(2,1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; }
@media (max-width: 900px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 600px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* ─── MARKET SECTION ─── */
.market-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
@media (max-width: 900px) { .market-grid { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 600px) { .market-grid { grid-template-columns: 1fr; } }

/* ─── SERVICES OVERVIEW ─── */
.service-card { position: relative; }
.service-card .service-number {
  position: absolute; top: 16px; right: 20px;
  font-size: 3rem; font-weight: 800; color: rgba(46,196,165,0.08);
  line-height: 1;
}
.service-card h3 { margin-bottom: 12px; }
.service-card ul { margin-top: 16px; }
.service-card ul li {
  color: var(--text-secondary);
  font-size: 0.9rem;
  padding: 4px 0 4px 20px;
  position: relative;
}
.service-card ul li::before {
  content: ''; position: absolute; left: 0; top: 12px;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
}
.service-card-img {
  width: calc(100% + 64px); height: 200px; object-fit: cover;
  border-radius: var(--radius) var(--radius) 0 0;
  margin: -32px -32px 24px -32px;
}
.service-card .card-link {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 20px; font-size: 0.9rem; font-weight: 600;
  color: var(--accent);
}
.service-card .card-link:hover { gap: 10px; }

/* ─── LIFECYCLE ─── */
.lifecycle {
  display: flex; align-items: flex-start; gap: 0;
  overflow-x: auto; padding-bottom: 16px;
}
.lifecycle-step {
  flex: 1; min-width: 140px; text-align: center; position: relative;
  padding: 0 8px;
}
.lifecycle-step .step-num {
  width: 44px; height: 44px;
  background: var(--accent-gradient);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; color: var(--bg-darker);
  margin: 0 auto 12px;
  position: relative; z-index: 2;
}
.lifecycle-step:not(:last-child)::after {
  content: '';
  position: absolute; top: 22px; left: calc(50% + 22px); right: calc(-50% + 22px);
  height: 2px; background: var(--border-accent); z-index: 1;
}
.lifecycle-step .step-title {
  font-size: 0.85rem; font-weight: 600; color: var(--text-primary);
  margin-bottom: 4px;
}
.lifecycle-step .step-desc {
  font-size: 0.78rem; color: var(--text-muted);
}

/* ─── WHY US ─── */
.why-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 20px; }
.why-item {
  display: flex; align-items: flex-start; gap: 14px;
  padding: 20px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}
.why-item .check {
  flex-shrink: 0; width: 28px; height: 28px;
  background: rgba(46,196,165,0.15);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--accent); font-size: 0.9rem; margin-top: 2px;
}
.why-item p { font-size: 0.92rem; color: var(--text-secondary); }
@media (max-width: 768px) { .why-grid { grid-template-columns: 1fr; } }

/* ─── TEAM ─── */
.team-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 32px; }
.team-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 32px;
  display: flex; align-items: flex-start; gap: 20px;
}
.team-avatar {
  flex-shrink: 0;
  width: 64px; height: 64px;
  background: var(--accent-gradient);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; font-weight: 700; color: var(--bg-darker);
}
.team-info h3 { margin-bottom: 2px; }
.team-info .role { color: var(--accent); font-size: 0.85rem; margin-bottom: 8px; }
.team-info p { font-size: 0.88rem; }
@media (max-width: 600px) {
  .team-grid { grid-template-columns: 1fr; }
  .team-card { flex-direction: column; align-items: center; text-align: center; }
}

/* ─── CTA SECTION ─── */
.cta-section {
  text-align: center;
  background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
}
.cta-section h2 { margin-bottom: 16px; }
.cta-section p { margin-bottom: 32px; max-width: 500px; margin-left: auto; margin-right: auto; }

/* ─── CONTACT FORM ─── */
.contact-grid { display: grid; grid-template-columns: 1fr 1.3fr; gap: 48px; align-items: start; }
.contact-info-item {
  display: flex; align-items: flex-start; gap: 14px;
  margin-bottom: 28px;
}
.contact-info-item .icon {
  flex-shrink: 0; width: 44px; height: 44px;
  background: rgba(46,196,165,0.1);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: var(--accent); font-size: 1.1rem;
}
.contact-info-item h4 { margin-bottom: 2px; }
.contact-info-item p { font-size: 0.9rem; }

.form-group { margin-bottom: 20px; }
.form-group label {
  display: block; font-size: 0.88rem; font-weight: 500;
  color: var(--text-secondary); margin-bottom: 6px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%; padding: 12px 16px;
  background: var(--bg-darker);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-main);
  font-size: 0.95rem;
  transition: border-color var(--transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none; border-color: var(--accent);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 768px) {
  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}

/* ─── BLOG ─── */
.blog-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  overflow: hidden; transition: all var(--transition);
}
.blog-card:hover { border-color: var(--border-accent); transform: translateY(-4px); box-shadow: var(--shadow); }
.blog-card-img {
  height: 200px;
  background: linear-gradient(135deg, var(--bg-darker), var(--bg-card));
  display: flex; align-items: center; justify-content: center;
  color: var(--accent); font-size: 2.5rem;
}
.blog-card-body { padding: 24px; }
.blog-card-body .tag {
  display: inline-block; background: rgba(46,196,165,0.12);
  color: var(--accent); font-size: 0.75rem; font-weight: 600;
  padding: 4px 10px; border-radius: 4px; margin-bottom: 12px;
  text-transform: uppercase; letter-spacing: 0.5px;
}
.blog-card-body h3 { margin-bottom: 8px; }
.blog-card-body p { font-size: 0.9rem; margin-bottom: 16px; }
.blog-card-body .meta { font-size: 0.8rem; color: var(--text-muted); }

/* ─── PAGE HEADER (sub-pages) ─── */
.page-header {
  padding: 148px 0 60px;
  background: var(--bg-darker);
  border-bottom: 1px solid var(--border-color);
}
.page-header .breadcrumb {
  font-size: 0.85rem; color: var(--text-muted); margin-bottom: 12px;
}
.page-header .breadcrumb a { color: var(--accent); }
.page-header h1 { margin-bottom: 12px; }
.page-header p { font-size: 1.1rem; max-width: 600px; }

/* Service detail page */
.service-detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.detail-card {
  background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius); padding: 28px;
}
.detail-card-img {
  width: calc(100% + 56px); height: 180px; object-fit: cover;
  border-radius: var(--radius) var(--radius) 0 0;
  margin: -28px -28px 20px -28px;
}
.card > .detail-card-img {
  width: calc(100% + 64px);
  margin: -32px -32px 20px -32px;
}
.detail-card h3 {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 12px;
}
.detail-card h3 .icon { color: var(--accent); font-size: 1.2rem; }
.detail-card p { font-size: 0.92rem; }
@media (max-width: 768px) { .service-detail-grid { grid-template-columns: 1fr; } }

/* Other services sidebar */
.other-services {
  background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius); padding: 28px;
}
.other-services h3 { margin-bottom: 16px; }
.other-services a {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary); font-size: 0.92rem;
}
.other-services a:last-child { border-bottom: none; }
.other-services a:hover { color: var(--accent); }

/* ─── FOOTER ─── */
.footer {
  background: var(--bg-darker);
  border-top: 1px solid var(--border-color);
  padding: 60px 0 30px;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px; margin-bottom: 40px;
}
.footer-brand p { font-size: 0.9rem; margin-top: 12px; max-width: 280px; }
.footer-col h4 {
  font-size: 0.85rem; text-transform: uppercase;
  letter-spacing: 1.5px; color: var(--text-muted);
  margin-bottom: 16px;
}
.footer-col a {
  display: block; color: var(--text-secondary);
  font-size: 0.9rem; padding: 4px 0;
}
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 24px;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 0.82rem; color: var(--text-muted);
}
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; gap: 8px; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* ─── LEGAL PAGES ─── */
.legal-content { max-width: 760px; }
.legal-content h2 { font-size: 1.3rem; margin-top: 36px; margin-bottom: 8px; color: var(--text-primary); }
.legal-content p { margin-bottom: 16px; font-size: 0.95rem; line-height: 1.8; }
.legal-content .updated { font-size: 0.85rem; color: var(--text-muted); margin-top: 40px; font-style: italic; }

/* ─── ANIMATIONS ─── */
.fade-in {
  opacity: 0; transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* Utility */
.text-accent { color: var(--accent); }
.text-center { text-align: center; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mb-3 { margin-bottom: 24px; }

/* ─── REAL LOGO ─── */
.nav-logo img {
  height: 56px;
  width: auto;
}
.nav-logo .logo-icon { display: none; }
.footer-brand .nav-logo img {
  height: 52px;
}
.hero-logo-large {
  height: 80px;
  width: auto;
  margin-bottom: 24px;
}

/* ─── LANGUAGE SWITCHER ─── */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 3px;
  margin-left: 8px;
}
.lang-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 5px 10px;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-main);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  letter-spacing: 0.5px;
}
.lang-btn:hover {
  color: var(--text-primary);
}
.lang-btn.active {
  background: var(--accent-gradient);
  color: var(--bg-darker);
}
.lang-btn .flag {
  font-size: 1rem;
  line-height: 1;
}
@media (max-width: 768px) {
  .lang-switcher {
    position: fixed;
    top: 20px;
    right: 64px;
    z-index: 1001;
    margin: 0;
  }
}