/* ==========================================================================
   SUNPULSE ENERGY SOLUTIONS - MAIN BASE & UTILITY STYLES
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
  position: relative;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-primary);
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(1.65rem, 3.5vw, 2.85rem); line-height: 1.2; }
h2 { font-size: clamp(1.35rem, 2.6vw, 2.2rem); line-height: 1.25; }
h3 { font-size: clamp(1.1rem, 2vw, 1.45rem); line-height: 1.3; }
h4 { font-size: clamp(0.95rem, 1.5vw, 1.18rem); }

p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Layout Containers */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.container-narrow {
  width: 100%;
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.section {
  padding: 4rem 0;
  position: relative;
}

.section-dark {
  background-color: var(--navy-primary);
  color: #FFFFFF;
}

.section-dark p {
  color: #CBD5E1;
}

.section-dark h1,
.section-dark h2,
.section-dark h3,
.section-dark h4 {
  color: #FFFFFF;
}

.section-alt {
  background-color: var(--bg-secondary);
}

/* Section Header Component */
.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 2.5rem;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.85rem;
  background: var(--sun-amber-glow);
  color: var(--sun-orange);
  border: 1px solid rgba(255, 94, 20, 0.35);
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
}

.section-badge.green-badge {
  background: rgba(16, 185, 129, 0.15);
  color: var(--eco-green-dark);
  border-color: rgba(16, 185, 129, 0.35);
}

[data-theme="dark"] .section-badge.green-badge {
  color: var(--eco-green);
}

.section-title {
  margin-bottom: 0.75rem;
}

.section-subtitle {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* Button System */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
  border: none;
  transition: all var(--transition-normal);
  text-align: center;
  white-space: nowrap;
  user-select: none;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--sun-gold) 0%, var(--sun-orange) 100%);
  color: #FFFFFF;
  box-shadow: var(--shadow-sun);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--sun-orange) 0%, #C2410C 100%);
  box-shadow: var(--shadow-orange);
  transform: translateY(-2px);
  color: #FFFFFF;
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--bg-tertiary);
  border-color: var(--sun-gold);
  color: var(--sun-orange);
  transform: translateY(-2px);
}

.btn-navy {
  background: var(--navy-primary);
  color: #FFFFFF;
  border: 1px solid var(--navy-border);
}

.btn-navy:hover {
  background: var(--navy-hover);
  border-color: var(--sun-gold);
  transform: translateY(-2px);
}

.btn-whatsapp {
  background: var(--whatsapp-green);
  color: #FFFFFF;
  box-shadow: 0 8px 20px -3px rgba(37, 211, 102, 0.4);
}

.btn-whatsapp:hover {
  background: var(--whatsapp-hover);
  transform: translateY(-2px);
  color: #FFFFFF;
  box-shadow: 0 12px 25px -3px rgba(37, 211, 102, 0.5);
}

.btn-call {
  background: var(--call-blue);
  color: #FFFFFF;
  box-shadow: 0 8px 20px -3px rgba(2, 132, 199, 0.35);
}

.btn-call:hover {
  background: var(--call-hover);
  transform: translateY(-2px);
  color: #FFFFFF;
}

.btn-sm {
  padding: 0.55rem 1.15rem;
  font-size: 0.875rem;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 1.1rem 2.25rem;
  font-size: 1.125rem;
  border-radius: var(--radius-lg);
}

.btn-pulse {
  position: relative;
}

.btn-pulse::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: inherit;
  border: 2px solid var(--sun-gold);
  animation: pulse-ring 2s cubic-bezier(0.215, 0.61, 0.355, 1) infinite;
  pointer-events: none;
}

@keyframes pulse-ring {
  0% { transform: scale(1); opacity: 0.8; }
  100% { transform: scale(1.15); opacity: 0; }
}

/* Glass Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-glow);
}

.glass-card {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

/* Grid Utilities */
.grid {
  display: grid;
  gap: 1.75rem;
}

/* Mobile-First Grid System */
.grid-2, .grid-3, .grid-4 {
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

.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-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }
.gap-4 { gap: 2rem; }

/* Highlight Text */
.text-gold { color: var(--sun-gold); }
.text-orange { color: var(--sun-orange); }
.text-green { color: var(--eco-green); }
.text-navy { color: var(--navy-primary); }

/* Animation Utility Classes */
.animate-fadeIn {
  animation: fadeIn 0.6s ease-out forwards;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Hidden Utility */
.hidden { display: none !important; }

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--border-medium);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--sun-gold);
}