/* ============================================================
   SUPER SAUBER SOLAR — Design System
   Palette: Deep Solar Green + Energy Gold + Warm White
   Font: Plus Jakarta Sans (Display) + Inter (Body)
   ============================================================ */


:root {
  /* Colors */
  --green-900: #0C3D1E;
  --green-800: #1B6B3A;
  --green-700: #237A44;
  --green-600: #2D9150;
  --green-500: #3AAB61;
  --green-200: #B8E8C8;
  --green-100: #E8F7EE;
  --green-50:  #F3FBF6;

  --gold-500:  #F5A623;
  --gold-400:  #F7BC56;
  --gold-100:  #FEF3DC;

  --dark-900:  #0F1C12;
  --dark-800:  #1A2B1E;
  --dark-700:  #243328;

  --warm-white: #F8F9F4;
  --white:      #FFFFFF;

  --gray-700:  #374151;
  --gray-500:  #6B7280;
  --gray-300:  #D1D5DB;
  --gray-100:  #F3F4F6;

  /* Typography */
  --font-display: 'Plus Jakarta Sans', sans-serif;
  --font-body:    'Inter', sans-serif;

  /* Spacing */
  --section-py: 5rem;
  --container:  1200px;

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 32px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(15,28,18,.08), 0 1px 2px rgba(15,28,18,.06);
  --shadow-md: 0 4px 16px rgba(15,28,18,.10);
  --shadow-lg: 0 12px 40px rgba(15,28,18,.14);
  --shadow-xl: 0 24px 64px rgba(15,28,18,.18);

  /* Transitions */
  --ease: cubic-bezier(.22,.68,0,1.2);
  --ease-out: cubic-bezier(0,.55,.45,1);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  color: var(--dark-900);
  background: var(--warm-white);
  line-height: 1.6;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ── Container ── */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ── Typography scale ── */
.display-xl {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -.03em;
}
.display-lg {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -.02em;
}
.display-md {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-weight: 700;
  line-height: 1.2;
}
.heading {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 1.8vw, 1.4rem);
  font-weight: 600;
  line-height: 1.3;
}
.body-lg { font-size: 1.125rem; line-height: 1.7; }
.body-md { font-size: 1rem; line-height: 1.6; }
.body-sm { font-size: .875rem; line-height: 1.5; color: var(--gray-500); }
.label {
  font-family: var(--font-display);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
}

/* ── Eyebrow ── */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-display);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--green-700);
  margin-bottom: 1rem;
}
.eyebrow::before {
  content: '';
  display: block;
  width: 20px; height: 2px;
  background: var(--gold-500);
  border-radius: 2px;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  padding: .875rem 1.75rem;
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-size: .95rem;
  font-weight: 700;
  transition: all .25s var(--ease);
  white-space: nowrap;
}
.btn-primary {
  background: var(--green-800);
  color: var(--white);
  box-shadow: 0 2px 0 var(--green-900), var(--shadow-sm);
}
.btn-primary:hover {
  background: var(--green-700);
  transform: translateY(-2px);
  box-shadow: 0 4px 0 var(--green-900), var(--shadow-md);
}
.btn-gold {
  background: var(--gold-500);
  color: var(--dark-900);
  box-shadow: 0 2px 0 #c07d0a, var(--shadow-sm);
}
.btn-gold:hover {
  background: var(--gold-400);
  transform: translateY(-2px);
  box-shadow: 0 4px 0 #c07d0a, var(--shadow-md);
}
.btn-outline {
  background: transparent;
  color: var(--green-800);
  border: 2px solid var(--green-800);
}
.btn-outline:hover {
  background: var(--green-100);
  transform: translateY(-2px);
}
.btn-white {
  background: var(--white);
  color: var(--green-800);
  box-shadow: var(--shadow-md);
}
.btn-white:hover {
  background: var(--green-50);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}
.btn-lg { padding: 1.1rem 2.2rem; font-size: 1.05rem; }
.btn-sm { padding: .6rem 1.2rem; font-size: .85rem; }
.btn svg { width: 18px; height: 18px; flex-shrink: 0; }

/* ── Cards ── */
.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-100);
  transition: all .3s var(--ease);
}
.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

/* ── Badges ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .3rem .75rem;
  border-radius: 100px;
  font-size: .8rem;
  font-weight: 600;
}
.badge-green { background: var(--green-100); color: var(--green-700); }
.badge-gold  { background: var(--gold-100);  color: #92620A; }
.badge-dark  { background: var(--dark-900);  color: var(--white); }

/* ── Section spacing ── */
.section { padding: var(--section-py) 0; }
.section-sm { padding: 3rem 0; }
.section-lg { padding: 7rem 0; }

/* ── Divider ── */
.divider { height: 1px; background: var(--gray-100); border: none; margin: 0; }

/* ── Forms ── */
.form-group { display: flex; flex-direction: column; gap: .4rem; }
.form-label {
  font-family: var(--font-display);
  font-size: .85rem;
  font-weight: 600;
  color: var(--dark-900);
}
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: .75rem 1rem;
  border: 1.5px solid #9CA3AF;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: .95rem;
  color: var(--dark-900);
  background: var(--white);
  box-shadow: inset 0 1px 3px rgba(0,0,0,.05);
  transition: border-color .2s, box-shadow .2s;
  appearance: none;
  -webkit-appearance: none;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--green-600);
  box-shadow: 0 0 0 3px rgba(45,145,80,.15);
}
.form-textarea { resize: vertical; min-height: 100px; }
.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right .75rem center;
  padding-right: 2.5rem;
}
.form-hint { font-size: .8rem; color: var(--gray-500); }

/* ── Animations ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes countUp {
  from { opacity: 0; transform: scale(.8); }
  to   { opacity: 1; transform: scale(1); }
}
@keyframes shimmer {
  0%   { background-position: -200% center; }
  100% { background-position: 200% center; }
}
@keyframes pulse-ring {
  0%   { transform: scale(1);   opacity: .6; }
  100% { transform: scale(1.5); opacity: 0; }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-8px); }
}

.animate-fadeup  { animation: fadeUp .6s var(--ease-out) both; }
.animate-fadein  { animation: fadeIn .5s ease both; }
.delay-1 { animation-delay: .1s; }
.delay-2 { animation-delay: .2s; }
.delay-3 { animation-delay: .3s; }
.delay-4 { animation-delay: .4s; }
.delay-5 { animation-delay: .5s; }

/* Intersection observer reveal */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity .7s var(--ease-out), transform .7s var(--ease-out);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal.delay-1 { transition-delay: .1s; }
.reveal.delay-2 { transition-delay: .2s; }
.reveal.delay-3 { transition-delay: .3s; }
.reveal.delay-4 { transition-delay: .4s; }
.reveal.delay-5 { transition-delay: .5s; }

@media (prefers-reduced-motion: reduce) {
  .reveal, .animate-fadeup, .animate-fadein,
  .btn, .card { transition: none !important; animation: none !important; }
}

/* ── Utility ── */
.text-center { text-align: center; }
.text-white  { color: var(--white); }
.text-green  { color: var(--green-700); }
.text-gold   { color: var(--gold-500); }
.text-gray   { color: var(--gray-500); }
.mt-1 { margin-top: .5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mt-6 { margin-top: 3rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-1 { gap: .5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  :root { --section-py: 3.5rem; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .btn-lg { padding: .9rem 1.5rem; font-size: .95rem; }
}

/* ── Accessibility ── */
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
:focus-visible {
  outline: 3px solid var(--gold-500);
  outline-offset: 3px;
  border-radius: 4px;
}
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--green-800);
  color: white;
  padding: .5rem 1rem;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  z-index: 9999;
  font-weight: 600;
}
.skip-link:focus { top: 0; }