/* ===== EKONIQ ENERGY — Dark Blue Theme ===== */

:root {
  /* Blue palette */
  --color-primary-darkest: #0c1e3a;
  --color-primary-dark: #1a365d;
  --color-primary-medium: #2563eb;
  --color-primary-light: #3b82f6;
  --color-primary-lightest: #eff6ff;
  --color-accent: #38bdf8;
  --color-accent-glow: rgba(56, 189, 248, 0.35);

  /* Neutrals */
  --color-white: #ffffff;
  --color-text: #1e293b;
  --color-text-light: #64748b;
  --color-border-light: #e2e8f0;
  --color-bg-light: #f8fafc;

  /* Typography */
  --font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3.25rem;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.12);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-text);
  line-height: 1.6;
  background: var(--color-white);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--color-primary-medium); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--color-primary-light); }

img { max-width: 100%; height: auto; }

h1, h2, h3, h4, h5 { line-height: 1.2; color: var(--color-primary-darkest); font-weight: 700; }
h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-3xl); margin-bottom: var(--spacing-lg); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-lg); }

.container { max-width: 1200px; margin: 0 auto; padding: 0 var(--spacing-lg); }
.text-center { text-align: center; }

/* ===== NAVBAR ===== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: 70px;
  background: transparent;
  backdrop-filter: blur(0px);
  border-bottom: 1px solid transparent;
  transition: background 0.4s, backdrop-filter 0.4s, border-color 0.4s, box-shadow 0.4s;
}

.navbar.scrolled {
  background: rgba(12, 30, 58, 0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.navbar-content {
  max-width: 1400px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 100%;
  padding: 0 var(--spacing-lg);
}

.navbar-logo { height: 28px; width: auto; transition: opacity 0.2s; }

.navbar-brand {
  display: flex; align-items: center;
  text-decoration: none;
  gap: 10px;
  height: 28px;
}

.navbar-brand-sub {
  font-size: 0.75rem; font-weight: 600; letter-spacing: 1.5px;
  color: var(--color-accent); text-transform: lowercase;
  white-space: nowrap;
  border-left: 1px solid rgba(255,255,255,0.3);
  padding-left: 10px;
}

.navbar-menu {
  display: flex; list-style: none; gap: var(--spacing-xl); align-items: center;
}

.navbar-menu a {
  color: rgba(255,255,255,0.9); font-size: var(--font-size-sm); font-weight: 500;
  transition: color 0.2s;
  position: relative;
}
.navbar-menu a:hover,
.navbar-menu a.active { color: var(--color-accent); }

.navbar-menu a.active::after {
  content: '';
  position: absolute;
  bottom: -6px; left: 0; right: 0;
  height: 3px;
  background: var(--color-accent);
  border-radius: 2px;
}

.navbar-actions { display: flex; align-items: center; gap: var(--spacing-md); }

.navbar-phone {
  color: rgba(255,255,255,0.7); font-size: var(--font-size-sm); font-weight: 500;
}
.navbar-phone:hover { color: var(--color-white); }

.btn-consultation {
  background: linear-gradient(135deg, var(--color-primary-medium), var(--color-accent));
  color: var(--color-white) !important;
  padding: 8px 20px; border-radius: 50px;
  font-size: var(--font-size-sm); font-weight: 600;
  transition: transform 0.2s, box-shadow 0.2s;
}
.btn-consultation:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px var(--color-accent-glow);
}

.menu-toggle {
  display: none; background: none; border: none; color: var(--color-white);
  font-size: 1.5rem; cursor: pointer;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 14px 32px; border-radius: 50px; font-weight: 600;
  font-size: var(--font-size-base); transition: all 0.3s; border: none; cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary-medium), var(--color-accent));
  color: var(--color-white);
  box-shadow: 0 4px 16px var(--color-accent-glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--color-accent-glow);
  color: var(--color-white);
}

.btn-secondary {
  background: transparent;
  border: 2px solid rgba(255,255,255,0.3);
  color: var(--color-white);
}
.btn-secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--color-primary-medium);
  color: var(--color-primary-medium);
}
.btn-outline:hover {
  background: var(--color-primary-medium);
  color: var(--color-white);
}

/* ===== HERO ===== */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(12, 30, 58, 0.55) 0%, rgba(26, 54, 93, 0.50) 100%),
              url('../img/hero.jpg') center/cover no-repeat;
  color: var(--color-white);
  padding-top: 70px;
  overflow: hidden;
  text-align: center;
}

.hero h1 {
  color: var(--color-white); font-size: clamp(2.25rem, 8vw, 3.5rem);
  margin-bottom: var(--spacing-lg); max-width: 800px;
  margin-left: auto; margin-right: auto; line-height: 1.1;
}

.hero-badge {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg); border-radius: 50px;
  background: rgba(6, 15, 30, 0.75);
  border: 1px solid rgba(56, 189, 248, 0.5);
  color: var(--color-white);
  font-size: var(--font-size-sm); font-weight: 600;
  margin-bottom: var(--spacing-lg);
  letter-spacing: 0.5px;
  backdrop-filter: blur(12px);
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: rgba(255,255,255,0.8);
  margin-bottom: var(--spacing-2xl);
  max-width: 700px; margin-left: auto; margin-right: auto;
}

.hero-cta { display: flex; gap: var(--spacing-lg); justify-content: center; flex-wrap: wrap; }

/* ===== SECTIONS ===== */
.section {
  padding: var(--spacing-4xl) 0;
}

.section-light {
  background: var(--color-bg-light);
}

.section-dark {
  background: linear-gradient(135deg, #132e54 0%, #1e3f6e 100%);
  color: var(--color-white);
}
.section-dark h2 { color: var(--color-white); }

.section-subtitle {
  color: var(--color-text-light);
  max-width: 600px; margin: var(--spacing-md) auto var(--spacing-3xl);
  font-size: var(--font-size-lg);
}

/* ===== STATS BAR ===== */
.stats-bar {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--spacing-xl);
  padding: var(--spacing-2xl) 0;
}

.stat-item { text-align: center; }

.stat-number {
  font-size: var(--font-size-4xl); font-weight: 800;
  background: linear-gradient(135deg, var(--color-primary-medium), var(--color-accent));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: var(--font-size-sm); color: var(--color-text-light); margin-top: var(--spacing-xs);
}

/* ===== SERVICES GRID ===== */
.services-grid {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-xl);
}

.service-card {
  padding: var(--spacing-xl);
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  transition: transform 0.3s, box-shadow 0.3s;
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.service-icon {
  width: 56px; height: 56px; border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(56, 189, 248, 0.1));
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; margin-bottom: var(--spacing-lg);
  border: 1px solid rgba(37, 99, 235, 0.15);
}

.service-card h4 {
  margin-bottom: var(--spacing-sm); color: var(--color-primary-dark);
}

.service-card p {
  font-size: var(--font-size-sm); color: var(--color-text-light); line-height: 1.7;
}

/* ===== PROCESS TIMELINE ===== */
.process-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-xl); position: relative;
}

.process-grid::before {
  content: ''; position: absolute;
  top: 35px; left: 8%; right: 8%;
  height: 3px;
  background: linear-gradient(to right, var(--color-primary-medium), var(--color-accent));
  border-radius: 2px; z-index: 0;
}

.process-card {
  text-align: center; position: relative; z-index: 1;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl) var(--spacing-lg);
  backdrop-filter: blur(4px);
}

.step-number {
  width: 64px; height: 64px; border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary-medium), var(--color-accent));
  color: var(--color-white); font-weight: 800; font-size: 1.5rem;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto var(--spacing-lg);
  box-shadow: 0 6px 20px var(--color-accent-glow);
}

.process-card h4 { color: var(--color-white); margin-bottom: var(--spacing-sm); }
.process-card p { font-size: var(--font-size-sm); color: rgba(255,255,255,0.7); line-height: 1.7; }

/* ===== FEATURES (Why ekoniq) ===== */
.features-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-xl);
}

.feature-card {
  padding: var(--spacing-xl);
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s;
  position: relative; overflow: hidden;
}

.feature-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary-medium), var(--color-accent));
  opacity: 0; transition: opacity 0.3s;
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}
.feature-card:hover::before { opacity: 1; }

.feature-icon {
  width: 64px; height: 64px; border-radius: 50%;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.08), rgba(56, 189, 248, 0.08));
  border: 2px solid rgba(37, 99, 235, 0.15);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem; margin: 0 auto var(--spacing-lg);
  transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover .feature-icon {
  transform: scale(1.1);
  box-shadow: 0 8px 24px var(--color-accent-glow);
  background: linear-gradient(135deg, var(--color-primary-medium), var(--color-accent));
  border-color: transparent;
}

.feature-card h4 { margin-bottom: var(--spacing-sm); }
.feature-card p { font-size: var(--font-size-sm); color: var(--color-text-light); line-height: 1.7; }

/* ===== BUILDING TYPES ===== */
.buildings-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--spacing-xl);
}

.building-card {
  text-align: center; padding: var(--spacing-xl) var(--spacing-lg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  background: var(--color-white);
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
}

.building-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary-light);
}

.building-icon {
  font-size: 2.5rem; margin-bottom: var(--spacing-md);
}

.building-card h4 { font-size: var(--font-size-base); margin-bottom: var(--spacing-xs); }
.building-card p { font-size: var(--font-size-sm); color: var(--color-text-light); }

/* ===== FAQ ===== */
.faq-container { max-width: 750px; margin: 0 auto; }

.faq-item {
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  overflow: hidden;
  transition: border-color 0.3s;
}

.faq-item:hover { border-color: var(--color-primary-light); }

.faq-question {
  display: flex; justify-content: space-between; align-items: center;
  padding: var(--spacing-lg) var(--spacing-xl);
  cursor: pointer; font-weight: 600;
  color: var(--color-primary-darkest);
  transition: background 0.2s;
}

.faq-question:hover { background: var(--color-primary-lightest); }

.faq-toggle {
  font-size: 0.7rem; color: var(--color-primary-medium);
  transition: transform 0.3s;
}

.faq-item.active .faq-toggle { transform: rotate(180deg); }

.faq-answer {
  max-height: 0; overflow: hidden; transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer { max-height: 500px; }

.faq-answer p {
  padding: 0 var(--spacing-xl) var(--spacing-lg);
  color: var(--color-text-light); line-height: 1.7;
}

/* ===== CONTACT FORM ===== */
.contact-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: var(--spacing-3xl);
  align-items: start;
}

.form-group { margin-bottom: var(--spacing-lg); }

.form-label {
  display: block; font-size: var(--font-size-sm); font-weight: 600;
  color: var(--color-primary-darkest); margin-bottom: var(--spacing-sm);
}

.form-input, .form-select, .form-area {
  width: 100%; padding: 12px 16px;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  transition: border-color 0.2s, box-shadow 0.2s;
  background: var(--color-white);
}

.form-input:focus, .form-select:focus, .form-area:focus {
  outline: none;
  border-color: var(--color-primary-medium);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-area { min-height: 120px; resize: vertical; }

/* ===== CTA SECTION ===== */
.cta-section {
  background: linear-gradient(135deg, #132e54 0%, #1e3f6e 100%);
  color: var(--color-white);
  padding: var(--spacing-4xl) 0;
  text-align: center;
}

.cta-section h2 { color: var(--color-white); margin-bottom: var(--spacing-md); }
.cta-section p { color: rgba(255,255,255,0.75); margin-bottom: var(--spacing-2xl); max-width: 550px; margin-left: auto; margin-right: auto; }

/* ===== FOOTER ===== */
.footer {
  background: var(--color-primary-darkest);
  color: rgba(255,255,255,0.8);
  padding: var(--spacing-4xl) 0 var(--spacing-lg);
  font-size: var(--font-size-sm);
}

.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-3xl);
}

.footer-col h4 {
  color: var(--color-white);
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-lg);
}

.footer-col ul { list-style: none; }

.footer-col ul li { margin-bottom: var(--spacing-md); }

.footer-col p { margin-bottom: var(--spacing-sm); }

.footer-brand {
  display: inline-flex; align-items: center;
  text-decoration: none;
  gap: 10px;
  margin-bottom: var(--spacing-lg);
}
.footer-logo { height: 28px; width: auto; }
.footer-brand-sub {
  font-size: 0.75rem; font-weight: 600; letter-spacing: 1.5px;
  color: var(--color-accent); text-transform: lowercase;
  white-space: nowrap;
  border-left: 1px solid rgba(255,255,255,0.3);
  padding-left: 10px;
}

.footer-description {
  font-size: var(--font-size-sm);
  line-height: 1.6;
  color: rgba(255,255,255,0.7);
}

.footer a { color: rgba(255,255,255,0.7); transition: color 0.2s; }
.footer a:hover { color: var(--color-accent); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--spacing-lg);
  margin-top: var(--spacing-lg);
  text-align: center;
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.5);
}

/* Language selector — matching ekoniq.eu style */
.lang-select {
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.3);
  cursor: pointer;
  font-weight: 600;
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  color: var(--color-white);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='rgba(255,255,255,0.8)'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  padding-right: 24px;
}
.navbar.scrolled .lang-select {
  color: var(--color-white);
  background: rgba(255,255,255,0.1);
}
.lang-select:hover { border-color: var(--color-accent); }
.lang-select option { background: var(--color-white); color: var(--color-text); font-weight: 500; }

/* ===== MOBILE ===== */
@media (max-width: 768px) {
  h1 { font-size: var(--font-size-3xl); }
  h2 { font-size: var(--font-size-2xl); }

  .navbar-menu { display: none; }
  .navbar-menu.active {
    display: flex; flex-direction: column;
    position: absolute; top: 100%; left: 0; right: 0;
    background: rgba(12, 30, 58, 0.98);
    backdrop-filter: blur(12px);
    padding: var(--spacing-lg);
    gap: var(--spacing-md);
    border-bottom: 1px solid rgba(255,255,255,0.1);
  }
  .menu-toggle { display: block; }
  .navbar-actions { display: none; }

  .hero { min-height: 80vh; padding-top: 70px; }

  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .services-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr; }
  .process-grid::before { display: none; }
  .process-card {
    display: flex; align-items: flex-start; gap: var(--spacing-lg);
    text-align: left;
  }
  .process-card .step-number { min-width: 48px; width: 48px; height: 48px; font-size: 1.2rem; margin: 0; }
  .features-grid { grid-template-columns: 1fr; }
  .buildings-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; text-align: center; }

  .navbar-actions.active {
    display: flex; flex-direction: column;
    position: absolute; top: calc(100% + 48px); left: 0; right: 0;
    background: var(--color-primary-darkest);
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    gap: var(--spacing-md);
    align-items: stretch;
    text-align: center;
  }
}

/* ===== SCROLL ANIMATIONS ===== */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}