/* ============================================================
   FGE SOLAR — GLOBAL CSS
   Design System: Colors, Typography, Layout, Animations
   ============================================================ */

/* ── Google Fonts loaded via <link> in HTML head (no @import for performance) ── */

/* ── Design Tokens ────────────────────────────────────────── */
:root {
  /* Brand Colors */
  --green:        #18B85C;
  --green-dark:   #12963F;
  --green-light:  #E6F7EE;
  --teal:         #1FC7C0;
  --teal-dark:    #18A09A;
  --dark:         #172219;
  --dark-2:       #1E2D22;
  --dark-3:       #263328;
  --sage:         #EEF2EF;
  --white:        #FFFFFF;

  /* Grays */
  --gray-50:  #F9FAF9;
  --gray-100: #F3F4F3;
  --gray-200: #E5E7E5;
  --gray-300: #D1D4D1;
  --gray-400: #9CA39C;
  --gray-500: #737A73;
  --gray-600: #565D56;
  --gray-700: #434843;
  --gray-800: #2F322F;
  --gray-900: #1A1D1A;

  /* Typography */
  --font-heading: 'Syne', -apple-system, sans-serif;
  --font-body:    'DM Sans', -apple-system, sans-serif;

  /* Font Sizes */
  --text-xs:   0.75rem;   /* 12px */
  --text-sm:   0.875rem;  /* 14px */
  --text-base: 1rem;      /* 16px */
  --text-lg:   1.125rem;  /* 18px */
  --text-xl:   1.25rem;   /* 20px */
  --text-2xl:  1.5rem;    /* 24px */
  --text-3xl:  1.875rem;  /* 30px */
  --text-4xl:  2.25rem;   /* 36px */
  --text-5xl:  3rem;      /* 48px */
  --text-6xl:  3.75rem;   /* 60px */
  --text-7xl:  4.5rem;    /* 72px */

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Border Radius */
  --radius-sm:  6px;
  --radius-md:  10px;
  --radius-lg:  16px;
  --radius-xl:  24px;
  --radius-2xl: 32px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.05);
  --shadow-lg:  0 8px 32px rgba(0,0,0,0.10), 0 4px 12px rgba(0,0,0,0.06);
  --shadow-xl:  0 20px 60px rgba(0,0,0,0.12), 0 8px 24px rgba(0,0,0,0.08);
  --shadow-green: 0 8px 32px rgba(24,184,92,0.25);

  /* Transitions */
  --transition-fast:   150ms ease;
  --transition-base:   250ms ease;
  --transition-slow:   400ms ease;

  /* Layout */
  --container-max:  1200px;
  --container-wide: 1400px;
  --section-py:     5rem;
  --section-py-sm:  3.5rem;
}

/* ── Reset ────────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  overflow-x: clip;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--gray-800);
  background-color: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  min-width: 320px;
  overflow-wrap: anywhere;
}

img, video, svg {
  display: block;
  max-width: 100%;
}

img,
video {
  height: auto;
}

iframe,
table {
  max-width: 100%;
}

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

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  background: none;
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--dark);
}

p {
  line-height: 1.7;
}

/* ── Typography ───────────────────────────────────────────── */
.display {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 6vw, var(--text-7xl));
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.h1 {
  font-size: clamp(2rem, 4.5vw, var(--text-6xl));
  font-weight: 800;
  letter-spacing: -0.025em;
}

.h2 {
  font-size: clamp(1.75rem, 3.5vw, var(--text-5xl));
  font-weight: 700;
  letter-spacing: -0.02em;
}

.h3 {
  font-size: clamp(1.5rem, 2.5vw, var(--text-4xl));
  font-weight: 700;
  letter-spacing: -0.015em;
}

.h4 {
  font-size: clamp(1.25rem, 2vw, var(--text-3xl));
  font-weight: 600;
}

.h5 {
  font-size: clamp(1.1rem, 1.5vw, var(--text-xl));
  font-weight: 600;
}

.body-lg {
  font-size: var(--text-lg);
  line-height: 1.7;
}

.body-sm {
  font-size: var(--text-sm);
  line-height: 1.6;
}

.caption {
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 600;
}

/* ── Color Utilities ──────────────────────────────────────── */
.text-white   { color: var(--white); }
.text-green   { color: var(--green); }
.text-teal    { color: var(--teal); }
.text-dark    { color: var(--dark); }
.text-muted   { color: var(--gray-500); }
.text-light   { color: var(--gray-400); }

.bg-dark      { background-color: var(--dark); }
.bg-dark-2    { background-color: var(--dark-2); }
.bg-sage      { background-color: var(--sage); }
.bg-green     { background-color: var(--green); }
.bg-white     { background-color: var(--white); }
.bg-gray-50   { background-color: var(--gray-50); }

/* ── Layout ───────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-6);
  padding-right: var(--space-6);
}

.container-wide {
  max-width: var(--container-wide);
}

.section {
  padding-top: var(--section-py);
  padding-bottom: var(--section-py);
}

.section-sm {
  padding-top: var(--section-py-sm);
  padding-bottom: var(--section-py-sm);
}

/* Grid helpers */
.grid {
  display: grid;
  gap: var(--space-6);
}

.grid > *,
.col2-start > *,
.col2-center > *,
.stat3 > *,
.process5 > * {
  min-width: 0;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-6 { grid-template-columns: repeat(6, 1fr); }

/* Responsive layout utilities — replaces inline style="" grids */
.col2-start {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-top: 2.5rem;
  align-items: start;
}

.col2-center {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.stat3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.process5 {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.5rem;
}

/* Responsive table scroll wrapper */
.table-scroll {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius-lg);
}

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-col { display: flex; flex-direction: column; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* Alignment */
.text-center { text-align: center; }
.text-left   { text-align: left; }

/* Section label */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: var(--space-4);
}

.section-label::before {
  content: '';
  display: block;
  width: 24px;
  height: 2px;
  background: var(--green);
  border-radius: 2px;
}

.section-header {
  max-width: 700px;
  margin-bottom: clamp(1.75rem, 4vw, 3rem);
}

.section-header.centered {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-header > :last-child {
  margin-bottom: 0;
}

.section-header .section-label {
  justify-content: flex-start;
}

.section-header.centered .section-label {
  justify-content: center;
}

.section-subtitle {
  margin-top: var(--space-4);
  font-size: var(--text-lg);
  color: var(--gray-600);
  line-height: 1.7;
  max-width: 680px;
}

.section-header.centered .section-subtitle {
  margin-left: auto;
  margin-right: auto;
}

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.875rem 1.75rem;
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 600;
  line-height: 1;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  white-space: nowrap;
  cursor: pointer;
  border: 2px solid transparent;
  text-decoration: none;
  min-width: 0;
}

.btn-lg {
  padding: 1.1rem 2.25rem;
  font-size: var(--text-lg);
  border-radius: var(--radius-lg);
}

.btn-sm {
  padding: 0.625rem 1.25rem;
  font-size: var(--text-sm);
}

.btn-primary {
  background: var(--green);
  color: var(--white);
  border-color: var(--green);
  box-shadow: var(--shadow-green);
}

.btn-primary:hover {
  background: var(--green-dark);
  border-color: var(--green-dark);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(24,184,92,0.35);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.35);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.6);
  transform: translateY(-2px);
}

.btn-outline-dark {
  background: transparent;
  color: var(--dark);
  border-color: var(--gray-300);
}

.btn-outline-dark:hover {
  background: var(--sage);
  border-color: var(--gray-400);
}

.btn-outline-green {
  background: transparent;
  color: var(--green);
  border-color: var(--green);
}

.btn-outline-green:hover {
  background: var(--green);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-green);
}

.btn-wa {
  background: #25D366;
  color: var(--white);
  border-color: #25D366;
  gap: var(--space-3);
}

.btn-wa:hover {
  background: #1ebe57;
  border-color: #1ebe57;
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(37,211,102,0.3);
}

/* Arrow icon in buttons */
.btn .arrow {
  transition: transform var(--transition-base);
}

.btn:hover .arrow {
  transform: translateX(4px);
}

/* ── Badge / Tag ──────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: clamp(4px, 1vw, 6px);
  padding: clamp(0.2rem, 0.7vw, 0.375rem) clamp(0.5rem, 1.5vw, 0.875rem);
  border-radius: var(--radius-full);
  font-size: clamp(0.6rem, 1.3vw, 0.75rem);
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  line-height: 1.2;
  white-space: nowrap;
}

.badge svg {
  width: clamp(11px, 2vw, 14px);
  height: clamp(11px, 2vw, 14px);
  flex-shrink: 0;
}

.badge-green {
  background: var(--green-light);
  color: var(--green-dark);
}

.badge-white {
  background: rgba(255,255,255,0.15);
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.25);
}

/* ── Gradient Text ────────────────────────────────────────── */
.text-gradient {
  background: linear-gradient(135deg, var(--green) 0%, var(--teal) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Divider ──────────────────────────────────────────────── */
.divider {
  border: none;
  height: 1px;
  background: var(--gray-200);
  margin: var(--space-12) 0;
}

.divider-dark {
  background: rgba(255,255,255,0.1);
}

/* ── Scroll Animations ────────────────────────────────────── */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in {
  opacity: 0;
  transition: opacity 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
}

/* Stagger children */
.stagger > * {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.stagger.visible > *:nth-child(1) { opacity: 1; transform: translateY(0); transition-delay: 0ms; }
.stagger.visible > *:nth-child(2) { opacity: 1; transform: translateY(0); transition-delay: 100ms; }
.stagger.visible > *:nth-child(3) { opacity: 1; transform: translateY(0); transition-delay: 200ms; }
.stagger.visible > *:nth-child(4) { opacity: 1; transform: translateY(0); transition-delay: 300ms; }
.stagger.visible > *:nth-child(5) { opacity: 1; transform: translateY(0); transition-delay: 400ms; }
.stagger.visible > *:nth-child(6) { opacity: 1; transform: translateY(0); transition-delay: 500ms; }

/* ── Misc Utilities ───────────────────────────────────────── */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border-width: 0;
}

.mt-auto { margin-top: auto; }
.w-full { width: 100%; }

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 1024px) {
  :root {
    --section-py: 4rem;
    --section-py-sm: 2.5rem;
  }

  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-6 { grid-template-columns: repeat(3, 1fr); }
  .process5 { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
  :root {
    --section-py: 3rem;
    --section-py-sm: 2rem;
  }

  .container {
    padding-left: var(--space-5);
    padding-right: var(--space-5);
  }

  .grid-2,
  .grid-3,
  .grid-4 { grid-template-columns: 1fr; }

  .grid-6 { grid-template-columns: repeat(2, 1fr); }

  .col2-start { grid-template-columns: 1fr; gap: 1.5rem; margin-top: 1.5rem; }
  .col2-center { grid-template-columns: 1fr; gap: 2rem; }
  .stat3 { grid-template-columns: repeat(2, 1fr); }
  .process5 { grid-template-columns: repeat(2, 1fr); }

  /* Tables: become horizontally scrollable on mobile */
  .table-scroll .data-table,
  .table-scroll table {
    min-width: 600px;
  }

  .btn-lg {
    padding: 1rem 1.75rem;
    font-size: var(--text-base);
  }

  .btn {
    white-space: normal;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }

  .stat3 { grid-template-columns: 1fr; }
  .process5 { grid-template-columns: 1fr; }

  .display,
  .h1,
  .h2,
  .h3 {
    text-wrap: balance;
  }
}

/* ── SVG Icon utility ─────────────────────────────────────── */
.icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  min-width: 0;
}

svg.icon, .icon svg {
  width: 1em;
  height: 1em;
}