@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@500;600;700;800&family=Inter:wght@400;500;600;700&display=swap');

/* ==========================================================================
   Design System Tokens & Theme Variables (OKLCH Color Space)
   ========================================================================== */
:root {
  --font-sans: "Inter", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-display: "Manrope", "Inter", ui-sans-serif, sans-serif;

  --radius: 0.875rem; /* 14px */
  --radius-sm: calc(var(--radius) - 6px);
  --radius-md: calc(var(--radius) - 3px);
  --radius-lg: var(--radius);
  --radius-xl: calc(var(--radius) + 4px);
  --radius-2xl: calc(var(--radius) + 10px);
  --radius-3xl: calc(var(--radius) + 18px);

  --background: oklch(1 0 0);
  --foreground: oklch(0.24 0.005 250);
  --card: oklch(1 0 0);
  --card-foreground: oklch(0.24 0.005 250);
  --popover: oklch(1 0 0);
  --popover-foreground: oklch(0.24 0.005 250);

  /* SEBSS green #2E8B43 */
  --primary: oklch(0.549 0.128 149.2);
  --primary-foreground: oklch(0.995 0 0);
  --primary-deep: oklch(0.38 0.096 150);

  /* Solar gold #F5A300 */
  --gold: oklch(0.775 0.156 71.5);
  --gold-foreground: oklch(0.25 0.03 70);

  /* Deep blue #005EB8 */
  --ocean: oklch(0.494 0.157 256.4);
  --ocean-foreground: oklch(0.99 0 0);

  --ink: oklch(0.2 0.02 250);

  --secondary: oklch(0.972 0.003 250);
  --secondary-foreground: oklch(0.28 0.02 250);
  --muted: oklch(0.972 0.003 250);
  --muted-foreground: oklch(0.52 0.014 253);
  --accent: oklch(0.955 0.02 150);
  --accent-foreground: oklch(0.38 0.096 150);

  --destructive: oklch(0.577 0.245 27.325);
  --destructive-foreground: oklch(0.99 0 0);
  --border: oklch(0.918 0.005 250);
  --input: oklch(0.918 0.005 250);
  --ring: oklch(0.549 0.128 149.2);

  --shadow-soft: 0 1px 2px oklch(0.2 0.03 240 / 0.04), 0 8px 24px -12px oklch(0.2 0.03 240 / 0.12);
  --shadow-lift: 0 2px 4px oklch(0.2 0.03 240 / 0.04), 0 24px 48px -20px oklch(0.2 0.03 240 / 0.22);
  --shadow-glow: 0 20px 60px -24px oklch(0.55 0.14 148 / 0.45);

  --gradient-hero: linear-gradient(135deg, oklch(0.28 0.07 255 / 0.92) 0%, oklch(0.3 0.08 200 / 0.7) 45%, oklch(0.38 0.096 150 / 0.55) 100%);
  --gradient-primary: linear-gradient(100deg, var(--primary-deep), var(--primary) 55%, var(--gold));
  --gradient-gold: linear-gradient(100deg, oklch(0.8 0.14 82), var(--gold));
  --gradient-ink: linear-gradient(160deg, oklch(0.22 0.03 252), oklch(0.26 0.05 210));
  --gradient-sheen: linear-gradient(120deg, transparent, oklch(1 0 0 / 0.14), transparent);
}

/* ==========================================================================
   Global Reset & Base Styles
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  border-color: var(--border);
}

html {
  font-family: var(--font-sans);
  background-color: var(--background);
  color: var(--foreground);
  -webkit-font-smoothing: antialiased;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.5;
}

main {
  flex: 1;
}

h1, h2, h3, h4, h5, h6, .font-display {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.025em;
}

a {
  color: inherit;
  text-decoration: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

::selection {
  background-color: var(--gold);
  color: var(--gold-foreground);
}

/* ==========================================================================
   Layout Containers & Header Navigation Fixes
   ========================================================================== */
.container-page {
  width: 100%;
  margin-inline: auto;
  max-width: 80rem; /* 1280px */
  padding-inline: 1.25rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: var(--background);
  border-bottom: 1px solid var(--border);
  transition: all 0.3s ease;
}

.site-header.scrolled {
  background-color: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-soft);
}

.header-inner {
  height: 5.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}


.brand-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.brand-logo img {
  height: 4.25rem;
  max-height: 4.5rem;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.05));
  transition: transform 0.25s ease;
}

.brand-logo:hover img {
  transform: scale(1.03);
}


/* Navigation Links Spacing & Hover */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.75rem; /* Distinct spacing between nav links */
}

.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--muted-foreground);
  transition: all 0.25s ease;
}

.nav-link:hover {
  background-color: var(--accent);
  color: var(--primary);
}

.nav-link.active {
  background-color: var(--accent);
  color: var(--primary);
  font-weight: 700;
}

/* Surfaces */
.surface-glass {
  background-color: oklch(1 0 0 / 0.1);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border: 1px solid oklch(1 0 0 / 0.18);
}

.surface-card {
  background-color: var(--card);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 4px);
  box-shadow: var(--shadow-soft);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hover-lift {
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s ease;
}
.hover-lift:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lift);
}

.text-gradient-primary {
  background-image: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Animations */
@keyframes fade-up {
  from { opacity: 0; transform: translateY(22px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes shimmer {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.animate-fade-up {
  animation: fade-up 0.7s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.animate-fade-in {
  animation: fade-in 0.8s ease both;
}

.animate-shimmer {
  animation: shimmer 8s ease-in-out infinite;
}

/* Scroll Reveal */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* Buttons */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  white-space: nowrap;
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  text-decoration: none;
}
.btn:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
}
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

.btn-default {
  background-color: var(--primary);
  color: var(--primary-foreground);
  box-shadow: var(--shadow-soft);
}
.btn-default:hover {
  background-color: var(--primary-deep);
}

.btn-hero {
  background-color: var(--primary);
  color: var(--primary-foreground);
  box-shadow: var(--shadow-glow);
}
.btn-hero:hover {
  transform: translateY(-2px);
  background-image: var(--gradient-gold);
  color: var(--gold-foreground);
}

.btn-gold {
  background-image: var(--gradient-gold);
  color: var(--gold-foreground);
  box-shadow: var(--shadow-soft);
}
.btn-gold:hover {
  transform: translateY(-2px);
  filter: brightness(1.05);
}

.btn-outline-brand {
  border: 2px solid var(--primary);
  background-color: var(--background);
  color: var(--primary);
}
.btn-outline-brand:hover {
  transform: translateY(-2px);
  background-color: var(--accent);
}

.btn-glass {
  background-color: oklch(1 0 0 / 0.1);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid oklch(1 0 0 / 0.18);
  color: var(--primary-foreground);
}
.btn-glass:hover {
  transform: translateY(-2px);
  background-color: oklch(1 0 0 / 0.2);
}

.btn-ghost {
  background: transparent;
  color: var(--foreground);
}
.btn-ghost:hover {
  background-color: var(--accent);
  color: var(--accent-foreground);
}

.btn-size-default { height: 2.25rem; padding: 0 1rem; }
.btn-size-sm { height: 2rem; padding: 0 0.75rem; font-size: 0.75rem; }
.btn-size-lg { height: 2.75rem; padding: 0 1.75rem; }
.btn-size-xl { height: 3.5rem; padding: 0 2rem; font-size: 1rem; }
.btn-size-icon { height: 2.25rem; width: 2.25rem; padding: 0; }

/* Inputs & Form Elements */
.input, .textarea, .select {
  width: 100%;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background-color: var(--background);
  padding: 0.625rem 0.875rem;
  font-size: 0.875rem;
  color: var(--foreground);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.input:focus, .textarea:focus, .select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px oklch(0.549 0.128 149.2 / 0.2);
}

.textarea {
  min-height: 100px;
  resize: vertical;
}

.label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.375rem;
}

/* Accordion */
.accordion-item {
  border-bottom: 1px solid var(--border);
}
.accordion-trigger {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 0;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  text-align: left;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--foreground);
  transition: color 0.2s;
}
.accordion-trigger:hover {
  color: var(--primary);
}
.accordion-trigger svg {
  transition: transform 0.3s ease;
}
.accordion-item.active .accordion-trigger svg {
  transform: rotate(180deg);
}
.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease-out, padding 0.35s ease-out;
  padding-bottom: 0;
  color: var(--muted-foreground);
  font-size: 0.875rem;
  line-height: 1.6;
}
.accordion-item.active .accordion-content {
  max-height: 400px;
  padding-bottom: 1.25rem;
}

/* Range Slider */
input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--muted);
  outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--primary);
  cursor: pointer;
  box-shadow: 0 0 10px oklch(0.549 0.128 149.2 / 0.4);
  transition: transform 0.2s;
}
input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

/* Progress bar */
.progress-bar-bg {
  width: 100%;
  height: 6px;
  background-color: var(--muted);
  border-radius: 3px;
  overflow: hidden;
}
.progress-bar-fill {
  height: 100%;
  background-color: var(--primary);
  transition: width 0.4s ease;
}

/* Toast notification */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
}
.toast {
  pointer-events: auto;
  background-color: var(--ink);
  color: var(--primary-foreground);
  padding: 0.875rem 1.25rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lift);
  font-size: 0.875rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  animation: fade-up 0.3s ease;
  border: 1px solid oklch(1 0 0 / 0.15);
}

/* Section Headings */
.section-heading {
  text-align: center;
  max-width: 42rem;
  margin: 0 auto 3.5rem auto;
}
.section-heading.align-left {
  text-align: left;
  margin-inline: 0;
}

/* Responsive Utilities */
.hidden { display: none !important; }
@media (min-width: 640px) { .sm\:block { display: block !important; } .sm\:flex { display: flex !important; } .sm\:grid { display: grid !important; } .sm\:hidden { display: none !important; } }
@media (min-width: 768px) { .md\:block { display: block !important; } .md\:flex { display: flex !important; } .md\:grid { display: grid !important; } }
@media (min-width: 1024px) { .lg\:block { display: block !important; } .lg\:flex { display: flex !important; } .lg\:grid { display: grid !important; } .lg\:hidden { display: none !important; } }

/* Infinite Scrolling Marquee for Client & Partner Logos */
.marquee-wrapper {
  background: var(--muted);
  border-block: 1px solid var(--border);
  padding: 3.5rem 0;
  overflow: hidden;
  position: relative;
}

.marquee-title {
  text-align: center;
  font-size: 0.8125rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--muted-foreground);
  margin-bottom: 2rem;
}

.marquee-container {
  overflow: hidden;
  white-space: nowrap;
  position: relative;
  width: 100%;
}

.marquee-container::before,
.marquee-container::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 8rem;
  z-index: 5;
  pointer-events: none;
}

.marquee-container::before {
  left: 0;
  background: linear-gradient(to right, var(--muted), transparent);
}

.marquee-container::after {
  right: 0;
  background: linear-gradient(to left, var(--muted), transparent);
}

.marquee-track {
  display: inline-flex;
  align-items: center;
  gap: 2rem;
  animation: marquee-scroll 35s linear infinite;
  will-change: transform;
}

.marquee-container:hover .marquee-track {
  animation-play-state: paused;
}

@keyframes marquee-scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.marquee-logo-card {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 4.75rem;
  padding: 0.75rem 1.75rem;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 1rem;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.05);
  flex-shrink: 0;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.marquee-logo-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  border-color: var(--primary);
}

.marquee-logo-card img {
  max-height: 2.8rem;
  width: auto;
  height: auto;
  object-fit: contain;
  filter: grayscale(15%) opacity(0.92);
  transition: filter 0.3s ease, transform 0.3s ease;
}

.marquee-logo-card:hover img {
  filter: grayscale(0%) opacity(1);
  transform: scale(1.04);
}

/* Testimonial Centered Slider */
.testimonial-slider-wrapper {
  position: relative;
  max-width: 54rem;
  margin: 0 auto;
}

.testimonial-slide {
  display: none;
  animation: fade-in 0.6s ease;
  text-align: center;
}

.testimonial-slide.active {
  display: block;
}

.testimonial-dots {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 2rem;
}

.testimonial-dot {
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background: rgba(255,255,255,0.25);
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
}

.testimonial-dot.active,
.testimonial-dot:hover {
  background: var(--gold);
  transform: scale(1.25);
}

.testimonial-nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.2);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: all 0.25s ease;
}

.testimonial-nav-btn:hover {
  background: var(--gold);
  color: var(--gold-foreground);
  border-color: var(--gold);
}

.testimonial-nav-prev { left: -4rem; }
.testimonial-nav-next { right: -4rem; }

@media (max-width: 768px) {
  .testimonial-nav-prev { left: 0.5rem; }
  .testimonial-nav-next { right: 0.5rem; }
}

/* FAQ 2-Column Enhanced Accordion */
.faq-card {
  background: var(--background);
  border: 1px solid var(--border);
  border-radius: 1.25rem;
  margin-bottom: 1rem;
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.faq-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-lift);
}

.faq-header {
  width: 100%;
  padding: 1.35rem 1.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: none;
  border: none;
  text-align: left;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--foreground);
  cursor: pointer;
}

.faq-icon {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--muted);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-left: 1rem;
  transition: transform 0.3s ease, background 0.3s ease, color 0.3s ease;
}

.faq-card.active .faq-icon {
  transform: rotate(180deg);
  background: var(--primary);
  color: #ffffff;
}

.faq-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease-out, padding 0.35s ease-out;
  padding: 0 1.75rem;
  color: var(--muted-foreground);
  font-size: 0.9375rem;
  line-height: 1.65;
}

.faq-card.active .faq-body {
  max-height: 400px;
  padding-bottom: 1.5rem;
}

/* Enhanced 7-Step Solar Process Stepper */
.process-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.75rem;
  margin-top: 3rem;
}

.process-card {
  background: var(--background);
  border: 1px solid var(--border);
  border-radius: 1.5rem;
  padding: 2.25rem;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
}

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

.process-badge {
  width: 3.25rem;
  height: 3.25rem;
  border-radius: 1rem;
  background: var(--gradient-primary);
  color: #ffffff;
  font-size: 1.125rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  margin-bottom: 1.25rem;
  transition: transform 0.3s ease;
}

.process-card:hover .process-badge {
  transform: scale(1.1) rotate(-4deg);
}

.process-step-tag {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--gold);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 0.35rem;
}





/* 4-Box Row 1 & 3-Box Row 2 Responsive Stepper */
@media (max-width: 992px) {
  .grid-4-row {
    grid-template-columns: repeat(2, 1fr) !important;
  }
  .grid-3-row {
    grid-template-columns: repeat(2, 1fr) !important;
  }
}

@media (max-width: 640px) {
  .grid-4-row,
  .grid-3-row {
    grid-template-columns: repeat(1, 1fr) !important;
  }
}