/* ===================================
   SOLCELLS BATTERIER – Solcellsbatterier & Batterilagring
   Main Stylesheet – Light / White Mode
   =================================== */

/* ===== CSS Variables ===== */
:root {
  --green:        #64c8c2;
  --green-dark:   #3da8a2;
  --green-light:  rgba(100,200,194,.12);

  /* Light-mode backgrounds */
  --navy:         #ffffff;
  --navy-light:   #f8fafc;
  --bg:           #ffffff;
  --bg-alt:       #f4f7f9;
  --surface:      #ffffff;
  --surface-2:    #f0f6f6;

  /* Borders */
  --gray:         #e8edf2;
  --gray-mid:     #d1dbe5;

  /* Text */
  --heading:      #0f172a;
  --text:         #374151;
  --text-muted:   #6b7280;
  --white:        #ffffff;

  --shadow-sm:    0 2px 8px rgba(0,0,0,.07);
  --shadow-md:    0 4px 20px rgba(0,0,0,.10);
  --shadow-lg:    0 8px 40px rgba(0,0,0,.14);
  --radius:       12px;
  --radius-lg:    20px;
  --transition:   .25s ease;
  --font:         'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --max-w:        1180px;
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ===== Utility ===== */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}
.section {
  padding: 80px 0;
}
.section--gray {
  background: var(--bg-alt);
}
.section__header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 56px;
}
.section__header h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  color: var(--heading);
  margin-bottom: 12px;
  line-height: 1.25;
}
.section__header p {
  font-size: 1.1rem;
  color: var(--text-muted);
}
.highlight {
  color: var(--green);
  position: relative;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 600;
  font-size: .95rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}
.btn--primary {
  background: var(--green);
  color: #ffffff;
  border-color: var(--green);
}
.btn--primary:hover {
  background: var(--green-dark);
  border-color: var(--green-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(100,200,194,.35);
}
.btn--outline {
  background: transparent;
  color: var(--green-dark);
  border-color: var(--green);
}
.btn--outline:hover {
  background: var(--green-light);
}
.btn--ghost {
  background: rgba(255,255,255,.15);
  color: var(--heading);
  border-color: rgba(15,23,42,.20);
  backdrop-filter: blur(4px);
}
.btn--ghost:hover {
  background: rgba(255,255,255,.35);
}
.btn--nav {
  background: var(--green);
  color: #ffffff;
  padding: 9px 20px;
  font-size: .9rem;
}
.btn--nav:hover {
  background: var(--green-dark);
}
.btn--large {
  padding: 15px 32px;
  font-size: 1.05rem;
}
.btn--full {
  width: 100%;
}

/* ===== Header / Nav ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--white);
  box-shadow: 0 1px 0 var(--gray), 0 2px 12px rgba(0,0,0,.05);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 24px;
}
.nav__logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--heading);
}
.logo-icon { font-size: 1.4rem; }
.logo-text { color: var(--heading); }
.nav__links {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav__links a {
  font-size: .95rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition);
}
.nav__links a:hover { color: var(--green-dark); }
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav__toggle span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--heading);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 640px;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 80px 0 60px;
}
.hero__bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #e4f6f5 0%, #f0fafa 50%, #eaf8f7 100%);
  z-index: 0;
}
.hero__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 80% 20%, rgba(100,200,194,.18) 0%, transparent 60%),
    radial-gradient(ellipse at 20% 80%, rgba(100,200,194,.10) 0%, transparent 50%);
}
.hero__content {
  position: relative;
  z-index: 1;
  color: var(--heading);
  max-width: 820px;
}
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(100,200,194,.18);
  border: 1px solid rgba(100,200,194,.45);
  color: #2a9d97;
  padding: 6px 16px;
  border-radius: 50px;
  font-size: .85rem;
  font-weight: 600;
  margin-bottom: 24px;
}
.hero__title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  color: var(--heading);
}
.hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-muted);
  max-width: 600px;
  margin-bottom: 36px;
  line-height: 1.7;
}
.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 48px;
}
.hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
}
.stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.stat__number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--green-dark);
  line-height: 1;
}
.stat__label {
  font-size: .85rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* ===== Trust Bar ===== */
.trust-bar {
  background: var(--bg-alt);
  padding: 20px 0;
  border-top: 1px solid var(--gray);
  border-bottom: 1px solid var(--gray);
}
.trust-bar__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 32px;
  justify-content: center;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
  font-size: .9rem;
  font-weight: 500;
}
.trust-icon { font-size: 1rem; }

/* ===== Intro ===== */
.intro__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.intro__text h2 {
  font-size: clamp(1.5rem, 2.5vw, 2.2rem);
  font-weight: 800;
  color: var(--heading);
  margin-bottom: 20px;
  line-height: 1.25;
}
.intro__text p {
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.75;
}
.intro__text .btn { margin-top: 8px; }

/* Energy Diagram */
.energy-diagram {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  background: var(--bg-alt);
  border: 1px solid var(--gray);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  flex-wrap: wrap;
}
.diagram-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
}
.diagram-icon { font-size: 3rem; }
.diagram-label {
  font-weight: 700;
  color: var(--heading);
  font-size: .95rem;
}
.diagram-sub {
  font-size: .8rem;
  color: var(--green-dark);
  font-weight: 600;
}
.diagram-arrow {
  font-size: 1.8rem;
  color: var(--green);
  font-weight: 700;
}
.diagram-battery {
  background: var(--green-light);
  border: 2px solid rgba(100,200,194,.35);
  border-radius: var(--radius);
  padding: 20px;
}

/* ===== Cards ===== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray);
  transition: all var(--transition);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--green);
}
.card__icon {
  font-size: 2.2rem;
  margin-bottom: 16px;
}
.card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--heading);
  margin-bottom: 10px;
}
.card p {
  color: var(--text-muted);
  font-size: .95rem;
  line-height: 1.65;
}

/* ===== Services Grid ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  align-items: start;
}
.service-card {
  background: var(--surface);
  border: 2px solid var(--gray);
  border-radius: var(--radius-lg);
  padding: 36px;
  position: relative;
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
}
.service-card:hover {
  border-color: var(--green);
  box-shadow: var(--shadow-md);
}
.service-card--featured {
  border-color: var(--green);
  background: var(--surface-2);
}
.service-card__badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--green);
  color: #ffffff;
  font-size: .8rem;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 50px;
  white-space: nowrap;
}
.service-card__icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}
.service-card h3 {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--heading);
  margin-bottom: 12px;
}
.service-card p {
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}
.service-list {
  margin-bottom: 24px;
}
.service-list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: .92rem;
  color: var(--text);
  padding: 6px 0;
  border-bottom: 1px solid var(--gray);
}
.service-list li::before {
  content: '✓';
  color: var(--green-dark);
  font-weight: 700;
  flex-shrink: 0;
}

/* ===== Steps ===== */
.steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 760px;
  margin: 0 auto;
}
.step {
  display: flex;
  gap: 24px;
  padding: 32px 0;
  border-bottom: 1px solid var(--gray);
}
.step:last-child { border-bottom: none; }
.step__number {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  background: var(--green);
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: 800;
}
.step__content h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--heading);
  margin-bottom: 8px;
}
.step__content p {
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===== Process ===== */
.process-steps {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}
.process-step {
  flex: 1;
  min-width: 200px;
  max-width: 240px;
  text-align: center;
  padding: 28px 20px;
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray);
}
.process-step__icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
}
.process-step h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--heading);
  margin-bottom: 8px;
}
.process-step p {
  font-size: .88rem;
  color: var(--text-muted);
  line-height: 1.6;
}
.process-step__arrow {
  font-size: 1.8rem;
  color: var(--green);
  font-weight: 700;
  align-self: center;
  flex-shrink: 0;
  padding-top: 0;
}

/* ===== Battery Cards ===== */
.battery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}
.battery-card {
  background: var(--white);
  border: 2px solid var(--gray);
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}
.battery-card__image {
  width: 100%;
  height: 220px;
  object-fit: cover;
  object-position: center;
  display: block;
  border-bottom: 1px solid var(--gray);
}
.battery-card__body {
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  flex-grow: 1;
}
.battery-card:hover {
  border-color: var(--green);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.battery-card--featured {
  border-color: var(--green);
  background: var(--surface-2);
}
.battery-card__badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--green);
  color: #ffffff;
  font-size: .8rem;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 50px;
  white-space: nowrap;
}
.battery-card__header {
  display: flex;
  align-items: center;
  gap: 14px;
}
.battery-card__icon {
  font-size: 2.2rem;
  flex-shrink: 0;
}
.battery-card__name {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--heading);
  margin-bottom: 4px;
}
.battery-card__tag {
  display: inline-block;
  background: var(--green-light);
  color: var(--green-dark);
  font-size: .75rem;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: 50px;
}
.battery-card__desc {
  color: var(--text-muted);
  font-size: .92rem;
  line-height: 1.7;
  flex-grow: 1;
}
.battery-card__specs {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--gray);
  border-radius: var(--radius);
  overflow: hidden;
}
.battery-card__specs li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 9px 14px;
  font-size: .85rem;
  border-bottom: 1px solid var(--gray);
}
.battery-card__specs li:last-child {
  border-bottom: none;
}
.spec-label {
  color: var(--text-muted);
  font-weight: 500;
}
.spec-value {
  color: var(--heading);
  font-weight: 600;
  text-align: right;
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.faq-item {
  background: var(--surface);
  border: 1px solid var(--gray);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition);
  box-shadow: var(--shadow-sm);
}
.faq-item[open] {
  border-color: var(--green);
}
.faq-item__question {
  padding: 20px 24px;
  font-weight: 700;
  color: var(--heading);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  list-style: none;
  font-size: 1rem;
  user-select: none;
}
.faq-item__question::-webkit-details-marker { display: none; }
.faq-item__question::after {
  content: '+';
  font-size: 1.4rem;
  color: var(--green-dark);
  font-weight: 400;
  flex-shrink: 0;
  transition: transform var(--transition);
}
.faq-item[open] .faq-item__question::after {
  transform: rotate(45deg);
}
.faq-item__answer {
  padding: 16px 24px 20px;
  color: var(--text-muted);
  line-height: 1.75;
  border-top: 1px solid var(--gray);
}
.faq-item__answer p { margin-bottom: 8px; }
.faq-item__answer p:last-child { margin-bottom: 0; }

/* ===== SEO Content ===== */
.seo-content__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}
.seo-content__grid h2 {
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-weight: 800;
  color: var(--heading);
  margin-bottom: 16px;
}
.seo-content__grid h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--heading);
  margin: 24px 0 10px;
}
.seo-content__grid p {
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 14px;
}
.cta-box {
  background: var(--green-light);
  border: 2px solid rgba(100,200,194,.35);
  border-radius: var(--radius);
  padding: 28px;
  margin-top: 32px;
  text-align: center;
}
.cta-box p {
  margin-bottom: 6px;
  color: var(--heading) !important;
}
.cta-box .btn { margin-top: 12px; }

/* ===== Contact ===== */
.contact {
  background: var(--bg-alt);
  border-top: 1px solid var(--gray);
}
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 60px;
  align-items: start;
}
.contact__info h2 {
  font-size: clamp(1.5rem, 2.5vw, 2.2rem);
  font-weight: 800;
  color: var(--heading);
  margin-bottom: 16px;
  line-height: 1.25;
}
.contact__info > p {
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 28px;
}
.contact__benefits {
  margin-bottom: 28px;
}
.contact__benefits li {
  color: var(--text);
  padding: 7px 0;
  font-size: .95rem;
  border-bottom: 1px solid var(--gray);
}
.contact__email {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--green-dark);
  font-weight: 600;
}
.contact__email a:hover { text-decoration: underline; }

/* ===== Form ===== */
.contact-form {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--gray);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-group {
  margin-bottom: 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.form-group label {
  font-size: .88rem;
  font-weight: 600;
  color: var(--heading);
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 11px 14px;
  border: 2px solid var(--gray);
  border-radius: 8px;
  font-family: var(--font);
  font-size: .95rem;
  color: var(--heading);
  background: var(--bg-alt);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}
.form-group select option {
  background: var(--white);
  color: var(--heading);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(100,200,194,.15);
  background: var(--white);
}
.form-group input.error,
.form-group select.error,
.form-group textarea.error {
  border-color: #e53e3e;
}
.form-group textarea { resize: vertical; min-height: 100px; }
.form-error {
  color: #e53e3e;
  font-size: .8rem;
  font-weight: 500;
  min-height: 1em;
}
.form-group--checkbox { flex-direction: row; align-items: flex-start; gap: 12px; }
.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  cursor: pointer;
  font-size: .85rem;
  color: var(--text-muted);
  line-height: 1.5;
}
.checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 2px;
  accent-color: var(--green);
  cursor: pointer;
}

/* Submit button states */
.btn-loading { display: none; }
#submitBtn.loading .btn-text { display: none; }
#submitBtn.loading .btn-loading { display: inline; }

/* Form message */
.form-message {
  margin-top: 16px;
  padding: 16px;
  border-radius: 8px;
  font-size: .95rem;
  font-weight: 600;
  text-align: center;
}
.form-message.success {
  background: rgba(100,200,194,.12);
  color: var(--green-dark);
  border: 1px solid rgba(100,200,194,.35);
}
.form-message.error {
  background: rgba(229,62,62,.08);
  color: #c53030;
  border: 1px solid rgba(229,62,62,.25);
}

/* ===== Footer ===== */
.footer {
  background: #f8fafc;
  border-top: 1px solid var(--gray);
  padding-top: 60px;
}
.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer__brand .nav__logo {
  color: var(--heading);
  margin-bottom: 12px;
}
.footer__brand p {
  font-size: .88rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 8px;
}
.footer__brand a {
  color: var(--green-dark);
}
.footer__links h4 {
  font-size: .9rem;
  font-weight: 700;
  color: var(--heading);
  margin-bottom: 16px;
}
.footer__links ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer__links li,
.footer__links a {
  font-size: .85rem;
  color: var(--text-muted);
  transition: color var(--transition);
}
.footer__links a:hover { color: var(--green-dark); }
.footer__bottom {
  border-top: 1px solid var(--gray);
  padding: 24px 0;
}
.footer__bottom p {
  font-size: .8rem;
  color: var(--text-muted);
  line-height: 1.7;
  text-align: center;
}

/* ===== Back to top ===== */
.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 44px;
  height: 44px;
  background: var(--green);
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
  box-shadow: var(--shadow-md);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition), transform var(--transition);
  z-index: 99;
}
.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}
.back-to-top:hover {
  transform: translateY(-3px);
  background: var(--green-dark);
}

/* ===== Animations ===== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .footer__inner {
    grid-template-columns: 1fr 1fr;
  }
  .intro__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .contact__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .seo-content__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .section { padding: 60px 0; }

  .nav__links {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 20px 24px 28px;
    gap: 0;
    box-shadow: var(--shadow-md);
    border-top: 1px solid var(--gray);
  }
  .nav__links.open { display: flex; }
  .nav__links a {
    padding: 12px 0;
    border-bottom: 1px solid var(--gray);
    width: 100%;
  }
  .nav__links .btn--nav {
    margin-top: 12px;
    width: 100%;
    border: none;
  }
  .nav__toggle { display: flex; }
  .nav { position: relative; }

  .hero { min-height: auto; padding: 60px 0 48px; }
  .hero__stats { gap: 20px 32px; }
  .stat__number { font-size: 1.6rem; }

  .trust-bar__inner { gap: 12px 20px; }

  .form-row { grid-template-columns: 1fr; }
  .contact-form { padding: 28px 20px; }

  .process-steps { flex-direction: column; align-items: center; }
  .process-step { max-width: 100%; width: 100%; }
  .process-step__arrow { transform: rotate(90deg); }

  .footer__inner { grid-template-columns: 1fr; gap: 32px; }

  .services-grid { grid-template-columns: 1fr; }
  .cards-grid { grid-template-columns: 1fr; }

  .energy-diagram { gap: 12px; padding: 28px 20px; }
  .diagram-icon { font-size: 2.2rem; }
}

@media (max-width: 480px) {
  .hero__cta { flex-direction: column; }
  .hero__cta .btn { width: 100%; }
  .back-to-top { bottom: 16px; right: 16px; }
}