/**
 * Beta Energy — Shared UI Components
 */

/* =========================================
   BUTTONS
   ========================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.3px;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
}

.btn:active {
  transform: scale(0.98);
}

.btn-accent {
  background: var(--accent);
  color: var(--white);
  box-shadow: 0 4px 14px rgba(15, 110, 150, 0.35);
}

.btn-accent:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(15, 110, 150, 0.45);
  color: var(--white);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.4);
}

.btn-outline:hover {
  border-color: var(--accent-light);
  color: var(--accent-light);
  background: rgba(255, 255, 255, 0.05);
}

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

.btn-outline-dark:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(15, 110, 150, 0.04);
}

.btn-dark {
  background: var(--navy);
  color: var(--white);
}

.btn-dark:hover {
  background: var(--navy-soft);
  transform: translateY(-2px);
  color: var(--white);
}

.btn-gray {
  background: #3A4048;
  color: var(--white);
}

.btn-gray:hover {
  background: #4A515A;
  transform: translateY(-2px);
  color: var(--white);
}

.btn-sm {
  padding: 9px 20px;
  font-size: 12px;
}

/* =========================================
   HEADER & NAVIGATION
   ========================================= */
@keyframes navEnter {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

header.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 20, 32, 0.92);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
  animation: navEnter 0.5s cubic-bezier(0.4, 0, 0.2, 1) both;
}

/* Container handles width/centering — nav-wrap only adds the flex bar layout */
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo svg {
  width: 26px;
  height: 26px;
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.logo:hover svg {
  transform: scale(1.08);
}

.logo span {
  color: var(--white);
  font-weight: 800;
  font-size: 16px;
  letter-spacing: 0.5px;
}

.logo span b {
  color: var(--accent);
  font-weight: 800;
}

/* Desktop Main Nav */
nav.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

nav.main-nav a {
  color: rgba(255, 255, 255, 0.8);
  font-size: 13px;
  font-weight: 600;
  position: relative;
  padding: 4px 0;
}

nav.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition-fast);
}

nav.main-nav a:hover {
  color: var(--white);
}

nav.main-nav a:hover::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Mobile Menu Toggle Button */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--white);
  cursor: pointer;
  padding: 6px;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

.menu-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
}

.menu-icon {
  width: 24px;
  height: 18px;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.menu-icon span {
  display: block;
  height: 2px;
  width: 100%;
  background-color: var(--white);
  border-radius: 2px;
  transition: transform var(--transition-normal), opacity var(--transition-fast);
}

.menu-toggle[aria-expanded="true"] .menu-icon span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-icon span:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] .menu-icon span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Mobile Drawer */
.mobile-nav-drawer {
  position: fixed;
  top: 0;
  right: -320px;
  width: 300px;
  max-width: 85vw;
  height: 100vh;
  background: var(--navy);
  z-index: 999;
  padding: 80px 28px 40px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: -10px 0 30px rgba(0, 0, 0, 0.4);
  transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-nav-drawer.open {
  right: 0;
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.mobile-nav-links a {
  color: var(--white);
  font-size: 17px;
  font-weight: 600;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.mobile-nav-links a:hover {
  color: var(--accent);
  padding-left: 6px;
}

.mobile-nav-drawer .btn {
  width: 100%;
  margin-top: 20px;
}

.mobile-drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(10, 20, 32, 0.6);
  backdrop-filter: blur(4px);
  z-index: 998;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.mobile-drawer-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

/* =========================================
   CLIENTS MARQUEE
   ========================================= */
.clients {
  background: var(--navy);
}

.clients .section-head {
  margin-bottom: 40px;
}

.clients .section-head h2 {
  color: var(--white);
}

.clients .section-head p {
  color: rgba(255, 255, 255, 0.65);
}

.clients-marquee {
  overflow: hidden;
  width: 100%;
  -webkit-mask-image: linear-gradient(90deg, transparent, black 10%, black 90%, transparent);
  mask-image: linear-gradient(90deg, transparent, black 10%, black 90%, transparent);
}

.clients-track {
  display: flex;
  width: max-content;
  animation: clientsScroll 28s linear infinite;
}

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

@keyframes clientsScroll {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

.client-logo {
  height: 64px;
  width: 200px;
  margin-right: 24px;           /* margin, not gap: keeps the -50% loop seamless */
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Logos are pre-processed: trimmed, transparent, white (originals in images/clients/originals) */
.client-logo img {
  max-height: 44px;
  max-width: 175px;
  opacity: 0.75;
  transition: opacity var(--transition-fast);
}

.client-logo:hover img {
  opacity: 1;
}

/* =========================================
   FOOTER
   ========================================= */
footer.site-footer {
  background: var(--navy-soft);
  color: rgba(255, 255, 255, 0.7);
  padding: 70px 0 30px;
}

.footer-cert {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 40px;
  margin-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.6);
  font-size: 13.5px;
}

.footer-cert b {
  color: var(--white);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 36px;
  margin-bottom: 50px;
}

.footer-col h4 {
  color: var(--white);
  font-size: 12px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.footer-col ul li {
  margin-bottom: 11px;
  font-size: 14px;
}

.footer-col ul li a:hover {
  color: var(--accent-light);
}

.footer-brand .logo span {
  color: var(--white);
}

.footer-brand p {
  margin: 16px 0 20px;
  font-size: 14px;
  max-width: 290px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.6;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 36px;
  height: 36px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--white);
  transform: translateY(-2px);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 26px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}

.footer-bottom a:hover {
  color: var(--accent-light);
}

/* =========================================
   LEAD MODAL DIALOG
   ========================================= */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 20, 32, 0.65);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.modal-overlay.open {
  display: flex;
  opacity: 1;
}

.modal {
  background: var(--white);
  border-radius: var(--radius-lg);
  max-width: 500px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 38px 34px;
  position: relative;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.35);
  transform: scale(0.95);
  transition: transform var(--transition-normal);
}

.modal-overlay.open .modal {
  transform: scale(1);
}

.modal-close {
  position: absolute;
  top: 18px;
  right: 18px;
  background: none;
  border: none;
  font-size: 26px;
  line-height: 1;
  color: var(--text-muted);
  cursor: pointer;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: all var(--transition-fast);
}

.modal-close:hover {
  color: var(--navy);
  background: var(--light);
}

.modal h3 {
  font-size: 24px;
  margin-bottom: 8px;
  color: var(--navy);
}

.modal p.modal-sub {
  color: var(--text-muted);
  font-size: 14.5px;
  margin-bottom: 24px;
  line-height: 1.5;
}

.form-group {
  margin-bottom: 18px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 7px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 14.5px;
  color: var(--text);
  background: var(--light);
  transition: border-color var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--white);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-group textarea {
  resize: vertical;
  min-height: 85px;
}

.form-error {
  color: var(--error);
  font-size: 12px;
  font-weight: 600;
  margin-top: 5px;
  display: none;
}

.form-group.invalid input,
.form-group.invalid textarea {
  border-color: var(--error);
  background: #FFF5F5;
}

.form-group.invalid .form-error {
  display: block;
}

.modal .btn-accent {
  width: 100%;
  margin-top: 10px;
  padding: 15px;
}

.lead-success {
  display: none;
  text-align: center;
  padding: 24px 0;
}

.lead-success.show {
  display: block;
}

.lead-success .check {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin: 0 auto 18px;
  box-shadow: 0 8px 20px var(--accent-glow);
}

.lead-form.hide {
  display: none;
}

/* =========================================
   RESPONSIVE COMPONENT RULES
   ========================================= */
@media (max-width: 900px) {
  nav.main-nav {
    display: none;
  }

  .menu-toggle {
    display: block;
  }

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

  .form-row {
    grid-template-columns: 1fr;
  }

  .modal {
    padding: 28px 20px;
  }
}

@media (max-width: 580px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}