/* ==========================================================================
   SOLARTECH ENERGY - MAIN THEME STYLES (v1.2.0)
   ========================================================================== */

/* 0. Accessible Skip Navigation Link */
.ste-skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--color-dark);
  color: #FFFFFF;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  z-index: 9999;
  transition: top var(--transition-fast);
  text-decoration: none;
  border: 2px solid var(--color-primary);
}

.ste-skip-link:focus {
  top: 1rem;
  outline: none;
}

/* Grid System */
.ste-grid {
  display: grid;
  gap: 1.5rem;
}

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

@media (min-width: 640px) {
  .ste-grid--2 { grid-template-columns: repeat(2, 1fr); }
  .ste-grid--4 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 992px) {
  .ste-grid--3 { grid-template-columns: repeat(3, 1fr); }
  .ste-grid--4 { grid-template-columns: repeat(4, 1fr); }
}

.ste-flex {
  display: flex;
  align-items: center;
}

.ste-flex--between {
  justify-content: space-between;
}

.ste-flex--center {
  justify-content: center;
}

.ste-flex--column {
  flex-direction: column;
}

.ste-flex--wrap {
  flex-wrap: wrap;
}

.ste-gap-xs { gap: 0.25rem; }
.ste-gap-sm { gap: 0.5rem; }
.ste-gap-md { gap: 1rem; }
.ste-gap-lg { gap: 1.5rem; }
.ste-gap-xl { gap: 2rem; }

/* Buttons */
.ste-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  min-height: 44px; /* Accessible Touch Target */
  padding: 0.85rem 1.65rem;
  border-radius: var(--radius-pill);
  border: 1.5px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-base);
  line-height: 1.2;
  white-space: nowrap;
  user-select: none;
  position: relative;
  overflow: hidden;
}

.ste-btn:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
}

.ste-btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none !important;
}

.ste-btn--primary {
  background-color: var(--color-primary);
  color: #052e16;
  font-weight: 700;
  box-shadow: 0 4px 14px var(--color-primary-glow);
}
.ste-btn--primary:hover:not(:disabled) {
  background-color: var(--color-primary-dark);
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(34, 197, 94, 0.4);
}

.ste-btn--secondary {
  background-color: var(--color-dark);
  color: var(--color-text-white);
  border-color: rgba(255, 255, 255, 0.1);
}
.ste-btn--secondary:hover:not(:disabled) {
  background-color: var(--color-dark-surface);
  color: var(--color-primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.ste-btn--outline {
  background-color: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary-darker);
}
.ste-btn--outline:hover:not(:disabled) {
  background-color: var(--color-primary-subtle);
  border-color: var(--color-primary-dark);
  color: var(--color-primary-darker);
}

.ste-btn--white {
  background-color: #FFFFFF;
  color: var(--color-dark);
  box-shadow: var(--shadow-md);
}
.ste-btn--white:hover:not(:disabled) {
  background-color: var(--color-bg);
  color: var(--color-primary-dark);
  transform: translateY(-2px);
}

.ste-btn--accent {
  background-color: var(--color-accent);
  color: #713F12;
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(250, 204, 21, 0.35);
}
.ste-btn--accent:hover:not(:disabled) {
  background-color: var(--color-accent-dark);
  color: #451A03;
  transform: translateY(-2px);
}

.ste-btn--whatsapp {
  background-color: var(--color-whatsapp);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(37, 211, 102, 0.35);
}
.ste-btn--whatsapp:hover:not(:disabled) {
  background-color: var(--color-whatsapp-dark);
  color: #FFFFFF;
  transform: translateY(-2px);
}

.ste-btn--sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  min-height: 38px;
}

.ste-btn--lg {
  padding: 1.1rem 2.2rem;
  font-size: 1.125rem;
  min-height: 52px;
}

.ste-btn--full {
  width: 100%;
}

/* Card Styles */
.ste-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-smooth);
  position: relative;
}

.ste-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

.ste-card--glass {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
}

.ste-card--dark {
  background: var(--color-dark-card);
  border-color: var(--color-dark-muted);
  color: var(--color-text-white);
}
.ste-card--dark:hover {
  border-color: rgba(34, 197, 94, 0.5);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

/* Topbar */
.ste-topbar {
  background-color: var(--color-dark);
  color: var(--color-text-light);
  font-size: 0.825rem;
  padding: 0.45rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.ste-topbar a {
  color: var(--color-text-white);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  min-height: 30px;
}
.ste-topbar a:hover {
  color: var(--color-primary);
}

.ste-topbar__item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

/* Sticky Header */
.ste-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.ste-header.ste-header--scrolled {
  background-color: #FFFFFF;
  box-shadow: var(--shadow-md);
  padding: 0.25rem 0;
}

.ste-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.ste-logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-heading);
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--color-dark);
  letter-spacing: -0.02em;
  text-decoration: none;
}

.ste-logo__icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--color-primary) 0%, #15803D 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  box-shadow: 0 4px 10px var(--color-primary-glow);
}

.ste-logo__tagline {
  font-size: 0.65rem;
  font-weight: 500;
  color: var(--color-text-muted);
  display: block;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-top: -2px;
}

/* Nav Menu */
.ste-nav {
  display: none;
}

@media (min-width: 1024px) {
  .ste-nav {
    display: flex;
    align-items: center;
    gap: 1.5rem;
  }
}

.ste-nav__link {
  font-family: var(--font-heading);
  font-size: 0.925rem;
  font-weight: 600;
  color: var(--color-dark);
  padding: 0.5rem 0.25rem;
  position: relative;
  transition: color var(--transition-fast);
}

.ste-nav__link:hover,
.ste-nav__link.ste-nav__link--active {
  color: var(--color-primary-dark);
}

.ste-nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-base);
  border-radius: var(--radius-pill);
}

.ste-nav__link:hover::after,
.ste-nav__link.ste-nav__link--active::after {
  width: 100%;
}

.ste-nav-dropdown {
  position: relative;
}

.ste-nav-dropdown__menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 240px;
  background: #FFFFFF;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-border);
  padding: 0.75rem 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-base);
  z-index: 100;
}

.ste-nav-dropdown:hover .ste-nav-dropdown__menu,
.ste-nav-dropdown:focus-within .ste-nav-dropdown__menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.ste-nav-dropdown__link {
  display: block;
  padding: 0.55rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-dark);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.ste-nav-dropdown__link:hover,
.ste-nav-dropdown__link:focus {
  background-color: var(--color-bg);
  color: var(--color-primary-dark);
  padding-left: 1.5rem;
}

/* Mobile Nav Toggle */
.ste-nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 44px;
  height: 44px;
  padding: 12px 8px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 1100;
}

@media (min-width: 1024px) {
  .ste-nav-toggle {
    display: none;
  }
}

.ste-nav-toggle span {
  width: 100%;
  height: 3px;
  background-color: var(--color-dark);
  border-radius: 2px;
  transition: all var(--transition-base);
}

/* Mobile Drawer */
.ste-mobile-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 85%;
  max-width: 380px;
  height: 100vh;
  background-color: #FFFFFF;
  box-shadow: -10px 0 30px rgba(0, 0, 0, 0.2);
  z-index: 1090;
  padding: 5rem 1.75rem 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: right var(--transition-smooth);
  overflow-y: auto;
}

.ste-mobile-menu.ste-mobile-menu--open {
  right: 0;
}

.ste-mobile-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(4px);
  z-index: 1080;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.ste-mobile-overlay.ste-mobile-overlay--open {
  opacity: 1;
  visibility: visible;
}

.ste-mobile-menu__link {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-dark);
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-border);
}

/* Hero Section */
.ste-hero {
  position: relative;
  background: linear-gradient(180deg, #F0FDF4 0%, #FFFFFF 100%);
  padding: clamp(3rem, 6vw, 5.5rem) 0 clamp(3.5rem, 7vw, 6rem) 0;
  overflow: hidden;
}

.ste-hero::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(34, 197, 94, 0.15) 0%, rgba(255, 255, 255, 0) 70%);
  border-radius: 50%;
  pointer-events: none;
}

.ste-hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(250, 204, 21, 0.12) 0%, rgba(255, 255, 255, 0) 70%);
  border-radius: 50%;
  pointer-events: none;
}

.ste-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

@media (min-width: 992px) {
  .ste-hero__grid {
    grid-template-columns: 1.15fr 0.85fr;
  }
}

.ste-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: #DCFCE7;
  color: #166534;
  border: 1px solid rgba(34, 197, 94, 0.3);
  padding: 0.4rem 1rem;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
}

.ste-hero__title {
  margin-bottom: 1.25rem;
  line-height: 1.18;
}

.ste-hero__lead {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  line-height: 1.6;
  color: #475569;
  margin-bottom: 2rem;
}

.ste-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.25rem;
}

.ste-hero__trust-points {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

@media (min-width: 640px) {
  .ste-hero__trust-points {
    grid-template-columns: repeat(3, 1fr);
  }
}

.ste-trust-point {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-dark);
}

.ste-trust-point svg {
  color: var(--color-primary-dark);
  flex-shrink: 0;
}

/* Hero Quick Lead Card */
.ste-hero-form-card {
  background: #FFFFFF;
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: 0 20px 40px -15px rgba(15, 23, 42, 0.12), 0 0 0 1px rgba(15, 23, 42, 0.05);
  position: relative;
  z-index: 10;
}

.ste-hero-form-card__header {
  text-align: center;
  margin-bottom: 1.5rem;
}

.ste-hero-form-card__title {
  font-size: 1.35rem;
  margin-bottom: 0.35rem;
}

.ste-hero-form-card__sub {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* Forms */
.ste-form-group {
  margin-bottom: 1.15rem;
}

.ste-form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 0.35rem;
}

.ste-form-control,
.ste-form-select,
.ste-form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--color-text-main);
  background-color: #FFFFFF;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.ste-form-control:focus,
.ste-form-select:focus,
.ste-form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px var(--color-primary-subtle);
}

.ste-form-textarea {
  min-height: 110px;
  resize: vertical;
}

/* Footer */
.ste-footer {
  background-color: var(--color-dark);
  color: #94A3B8;
  padding: 5rem 0 2rem 0;
  position: relative;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.ste-footer h4 {
  color: #FFFFFF;
  font-size: 1.1rem;
  margin-bottom: 1.35rem;
  position: relative;
  padding-bottom: 0.5rem;
}

.ste-footer h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 32px;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: var(--radius-pill);
}

.ste-footer a {
  color: #CBD5E1;
}
.ste-footer a:hover {
  color: var(--color-primary-light);
}

.ste-footer__list {
  list-style: none;
  padding: 0;
}

.ste-footer__list li {
  margin-bottom: 0.65rem;
}

.ste-footer__bottom {
  margin-top: 3.5rem;
  padding-top: 1.75rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
  text-align: center;
}

@media (min-width: 768px) {
  .ste-footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.ste-disclaimer-box {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  font-size: 0.8rem;
  line-height: 1.5;
  color: #94A3B8;
  margin-top: 2rem;
}