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

:root {
  --yellow:  #F5C518;
  --orange:  #E8820C;
  --dark:    #0D1117;
  --dark2:   #161B22;
  --dark3:   #1E2530;
  --gray:    #6B7280;
  --light:   #F9FAFB;
  --white:   #FFFFFF;
  --radius:  12px;
  --transition: .25s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--white);
  color: var(--dark);
  line-height: 1.6;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { display: block; max-width: 100%; }

.container {
  width: 90%;
  max-width: 1140px;
  margin: 0 auto;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 8px;
  font-weight: 600;
  font-size: .95rem;
  transition: var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
}
.btn-primary {
  background: var(--yellow);
  color: var(--dark);
}
.btn-primary:hover { background: var(--orange); color: var(--white); }
.btn-ghost {
  border-color: rgba(255,255,255,.4);
  color: var(--white);
  background: transparent;
}
.btn-ghost:hover { border-color: var(--yellow); color: var(--yellow); }
.btn-full { width: 100%; text-align: center; }

/* ===== NAV ===== */
.nav-wrapper {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition);
}
.nav-wrapper.scrolled {
  background: rgba(13,17,23,.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 20px rgba(0,0,0,.3);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}
.logo {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--white);
  letter-spacing: -.5px;
}
.logo span { color: var(--yellow); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav-links a {
  color: rgba(255,255,255,.85);
  font-size: .9rem;
  font-weight: 500;
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--yellow); }
.btn-nav {
  background: var(--yellow);
  color: var(--dark) !important;
  padding: 8px 20px;
  border-radius: 6px;
  font-weight: 700 !important;
}
.btn-nav:hover { background: var(--orange); color: var(--white) !important; }

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

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 100vh;
  background: linear-gradient(135deg, #0D1117 0%, #1a2535 50%, #0f1a10 100%);
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 70% 40%, rgba(245,197,24,.12) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 20% 80%, rgba(232,130,12,.08) 0%, transparent 60%);
}
.hero-overlay {
  position: absolute;
  inset: 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='%23ffffff' fill-opacity='0.02'%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");
}
.hero-content {
  position: relative;
  z-index: 2;
  padding: 120px 0 100px;
  max-width: 680px;
}
.hero-badge {
  display: inline-block;
  background: rgba(245,197,24,.15);
  border: 1px solid rgba(245,197,24,.3);
  color: var(--yellow);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .5px;
  text-transform: uppercase;
  margin-bottom: 24px;
}
.hero-content h1 {
  font-size: clamp(2.8rem, 6vw, 4.8rem);
  font-weight: 900;
  line-height: 1.05;
  color: var(--white);
  margin-bottom: 24px;
}
.hero-content h1 em {
  font-style: normal;
  color: var(--yellow);
}
.hero-content p {
  font-size: 1.1rem;
  color: rgba(255,255,255,.7);
  margin-bottom: 36px;
  max-width: 520px;
}
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 60px; }

.hero-stats {
  display: flex;
  align-items: center;
  gap: 32px;
}
.stat strong {
  display: block;
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--yellow);
  line-height: 1;
}
.stat span {
  font-size: .8rem;
  color: rgba(255,255,255,.5);
  font-weight: 400;
}
.stat-sep {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,.15);
}
.hero-shape {
  position: absolute;
  right: -100px;
  top: 50%;
  transform: translateY(-50%);
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(245,197,24,.06) 0%, transparent 70%);
  border: 1px solid rgba(245,197,24,.1);
}

/* ===== SECTIONS ===== */
.section { padding: 100px 0; }
.section-dark {
  background: var(--dark);
  color: var(--white);
}

.section-header {
  text-align: center;
  max-width: 580px;
  margin: 0 auto 60px;
}
.section-header h2 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  margin: 10px 0 16px;
}
.section-header p { color: var(--gray); font-size: 1.05rem; }

.label {
  display: inline-block;
  background: rgba(245,197,24,.12);
  color: var(--orange);
  padding: 4px 14px;
  border-radius: 50px;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .8px;
  text-transform: uppercase;
}
.label-light {
  background: rgba(245,197,24,.15);
  color: var(--yellow);
}

/* ===== CARDS ===== */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}
.card {
  background: var(--light);
  border-radius: var(--radius);
  padding: 36px 28px;
  border: 1px solid #E5E7EB;
  transition: transform var(--transition), box-shadow var(--transition);
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(0,0,0,.08);
}
.card-icon {
  font-size: 2.2rem;
  margin-bottom: 20px;
  line-height: 1;
}
.card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 12px;
}
.card p { color: var(--gray); font-size: .95rem; }

/* ===== AVANTAJE ===== */
.avantaje-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.avantaje-text h2 {
  font-size: clamp(2rem, 3.5vw, 2.6rem);
  font-weight: 800;
  margin: 12px 0 20px;
  line-height: 1.2;
}
.avantaje-text p { color: rgba(255,255,255,.65); margin-bottom: 28px; }

.check-list { margin-bottom: 36px; }
.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: rgba(255,255,255,.8);
  font-size: .95rem;
  margin-bottom: 12px;
}
.check-list li::before {
  content: '✓';
  color: var(--yellow);
  font-weight: 900;
  flex-shrink: 0;
  margin-top: 2px;
}

.avantaje-visual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.av-box {
  background: var(--dark2);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
}
.av-box-accent {
  background: var(--yellow);
}
.av-number {
  font-size: 2.8rem;
  font-weight: 900;
  line-height: 1;
  color: var(--yellow);
  margin-bottom: 8px;
}
.av-box-accent .av-number { color: var(--dark); }
.av-number span { font-size: 1.4rem; font-weight: 700; }
.av-desc {
  font-size: .8rem;
  color: rgba(255,255,255,.5);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: .5px;
}
.av-box-accent .av-desc { color: rgba(0,0,0,.6); }

/* ===== PROJECTS ===== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}
.project-card {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid #E5E7EB;
  transition: transform var(--transition), box-shadow var(--transition);
}
.project-card:hover { transform: translateY(-6px); box-shadow: 0 24px 48px rgba(0,0,0,.1); }
.project-img {
  height: 220px;
  background-size: cover;
  background-position: center;
}
/* Placeholder gradients simulating solar roof photos */
.pi-1 {
  background: linear-gradient(135deg, #1a3a2e 0%, #2d5a3d 40%, #4a7c59 100%);
  position: relative;
}
.pi-2 {
  background: linear-gradient(135deg, #1e2a3a 0%, #2e4a6a 40%, #3a6a8e 100%);
}
.pi-3 {
  background: linear-gradient(135deg, #2a1e3a 0%, #4a2e6a 40%, #6a3a8e 100%);
}
.pi-1::after, .pi-2::after, .pi-3::after {
  content: '☀';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  font-size: 4rem;
  opacity: .2;
}
.project-info { padding: 24px; }
.project-tag {
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--orange);
  background: rgba(232,130,12,.1);
  padding: 3px 10px;
  border-radius: 50px;
}
.project-info h4 {
  font-size: 1rem;
  font-weight: 700;
  margin: 12px 0 6px;
}
.project-info p { color: var(--gray); font-size: .9rem; }

/* ===== CONTACT ===== */
.section-contact { background: var(--light); }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 80px;
  align-items: start;
}
.contact-text h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 800;
  margin: 12px 0 16px;
  line-height: 1.2;
}
.contact-text p { color: var(--gray); margin-bottom: 32px; }
.contact-info { display: flex; flex-direction: column; gap: 16px; }
.ci-item {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: .95rem;
  color: #374151;
}
.ci-icon { font-size: 1.2rem; }

.contact-form {
  background: var(--white);
  border-radius: 16px;
  padding: 40px;
  box-shadow: 0 10px 40px rgba(0,0,0,.08);
  border: 1px solid #E5E7EB;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: .85rem;
  font-weight: 600;
  color: #374151;
  margin-bottom: 6px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid #E5E7EB;
  border-radius: 8px;
  font-family: inherit;
  font-size: .95rem;
  color: var(--dark);
  background: var(--white);
  transition: border-color var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--yellow); }
.form-group textarea { resize: vertical; }
.form-success {
  display: none;
  margin-top: 16px;
  padding: 14px;
  background: rgba(34,197,94,.1);
  border: 1px solid rgba(34,197,94,.3);
  border-radius: 8px;
  color: #16a34a;
  font-weight: 600;
  text-align: center;
  font-size: .9rem;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--dark);
  color: rgba(255,255,255,.6);
  padding-top: 60px;
}
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer-brand p {
  margin-top: 14px;
  font-size: .9rem;
  max-width: 260px;
  line-height: 1.7;
}
.footer-links h5 {
  color: var(--white);
  font-size: .85rem;
  font-weight: 700;
  letter-spacing: .5px;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.footer-links ul { display: flex; flex-direction: column; gap: 10px; }
.footer-links a {
  font-size: .9rem;
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--yellow); }
.footer-bottom {
  padding: 20px 0;
  font-size: .85rem;
  text-align: center;
}
.footer-bottom a:hover { color: var(--yellow); }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .avantaje-grid { grid-template-columns: 1fr; gap: 48px; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 720px) {
  .section { padding: 70px 0; }
  .nav-links {
    display: none;
    flex-direction: column;
    gap: 0;
    position: absolute;
    top: 70px; left: 0; right: 0;
    background: rgba(13,17,23,.97);
    padding: 20px 0;
    border-top: 1px solid rgba(255,255,255,.1);
  }
  .nav-links.open { display: flex; }
  .nav-links li { width: 100%; text-align: center; }
  .nav-links a { display: block; padding: 12px 24px; }
  .btn-nav { margin: 8px 24px 4px; border-radius: 6px; }
  .burger { display: block; }
  .hero-stats { flex-wrap: wrap; gap: 20px; }
  .stat-sep { display: none; }
  .hero-cta { flex-direction: column; }
  .hero-cta .btn { text-align: center; }
  .form-row { grid-template-columns: 1fr; }
  .contact-form { padding: 28px 20px; }
  .avantaje-visual { grid-template-columns: 1fr 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
}

@media (max-width: 400px) {
  .hero-content h1 { font-size: 2.4rem; }
  .avantaje-visual { grid-template-columns: 1fr; }
}

/* ===== COOKIE BANNER ===== */
.cookie-banner {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(120px);
  width: calc(100% - 48px);
  max-width: 860px;
  background: var(--dark2);
  border: 1px solid rgba(245,197,24,.2);
  border-radius: 14px;
  box-shadow: 0 8px 40px rgba(0,0,0,.5);
  z-index: 9999;
  opacity: 0;
  transition: transform .4s cubic-bezier(.34,1.56,.64,1), opacity .3s ease;
  pointer-events: none;
}
.cookie-banner.visible {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
  pointer-events: all;
}
.cookie-banner.hidden {
  transform: translateX(-50%) translateY(140px);
  opacity: 0;
  pointer-events: none;
}
.cookie-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 20px 24px;
  flex-wrap: wrap;
}
.cookie-text { flex: 1; min-width: 240px; }
.cookie-text strong {
  display: block;
  color: var(--white);
  font-size: .95rem;
  margin-bottom: 4px;
}
.cookie-text p {
  color: rgba(255,255,255,.6);
  font-size: .82rem;
  line-height: 1.5;
}
.cookie-text a { color: var(--yellow); text-decoration: underline; }
.cookie-actions {
  display: flex;
  gap: 10px;
  flex-shrink: 0;
  flex-wrap: wrap;
}
.btn-cookie {
  padding: 9px 18px;
  border-radius: 7px;
  font-size: .85rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  font-family: inherit;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-cookie-settings {
  background: transparent;
  border: 1.5px solid rgba(255,255,255,.25);
  color: rgba(255,255,255,.75);
}
.btn-cookie-settings:hover { border-color: var(--yellow); color: var(--yellow); }
.btn-cookie-reject {
  background: rgba(255,255,255,.08);
  color: rgba(255,255,255,.7);
}
.btn-cookie-reject:hover { background: rgba(255,255,255,.15); }
.btn-cookie-accept {
  background: var(--yellow);
  color: var(--dark);
}
.btn-cookie-accept:hover { background: var(--orange); color: var(--white); }

/* ===== COOKIE MODAL ===== */
.cookie-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.7);
  backdrop-filter: blur(4px);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s ease;
}
.cookie-modal-overlay.visible {
  opacity: 1;
  pointer-events: all;
}
.cookie-modal {
  background: var(--dark2);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 16px;
  width: 100%;
  max-width: 520px;
  box-shadow: 0 24px 60px rgba(0,0,0,.6);
  transform: scale(.96);
  transition: transform .25s ease;
}
.cookie-modal-overlay.visible .cookie-modal { transform: scale(1); }
.cookie-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 24px 18px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.cookie-modal-header h3 { color: var(--white); font-size: 1.05rem; }
.cookie-modal-close {
  background: none;
  border: none;
  color: rgba(255,255,255,.5);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
  transition: color var(--transition);
}
.cookie-modal-close:hover { color: var(--white); }
.cookie-modal-body { padding: 8px 0; }
.cookie-toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 24px;
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.cookie-toggle-row:last-child { border-bottom: none; }
.cookie-toggle-row strong {
  display: block;
  color: var(--white);
  font-size: .9rem;
  margin-bottom: 4px;
}
.cookie-toggle-row p { color: rgba(255,255,255,.5); font-size: .8rem; line-height: 1.4; }
.cookie-modal-footer {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  padding: 18px 24px;
  border-top: 1px solid rgba(255,255,255,.08);
}

/* Toggle switch */
.toggle { position: relative; display: inline-block; width: 46px; height: 26px; flex-shrink: 0; }
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,.15);
  border-radius: 26px;
  cursor: pointer;
  transition: background .2s;
}
.toggle-slider::before {
  content: '';
  position: absolute;
  width: 20px; height: 20px;
  left: 3px; top: 3px;
  background: var(--white);
  border-radius: 50%;
  transition: transform .2s;
}
.toggle input:checked + .toggle-slider { background: var(--yellow); }
.toggle input:checked + .toggle-slider::before { transform: translateX(20px); }
.toggle-disabled .toggle-slider { cursor: not-allowed; background: rgba(245,197,24,.4); }
.toggle-disabled input:checked + .toggle-slider { background: rgba(245,197,24,.4); }

@media (max-width: 600px) {
  .cookie-inner { flex-direction: column; align-items: stretch; }
  .cookie-actions { justify-content: stretch; }
  .btn-cookie { flex: 1; text-align: center; }
}