/* ============================================
   CTS Premium Enhancements
   Stats · FAQ · Search · Float · Forms
   ============================================ */

/* ---- Stats band ---- */
.stats-band {
  padding: 4rem 0;
  position: relative;
}

.stats-band__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.stat-card {
  padding: 2rem 1.5rem;
  text-align: center;
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

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

.stat-card__value {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 800;
  line-height: 1.1;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.35rem;
}

.stat-card__label {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* ---- FAQ ---- */
.faq {
  background: transparent;
}

.faq__list {
  max-width: 780px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  overflow: hidden;
  transition: border-color var(--transition);
}

.faq-item.is-open {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-sm);
}

.faq-item__trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.15rem 1.25rem;
  text-align: start;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  background: transparent;
  cursor: pointer;
  transition: color var(--transition);
}

.faq-item__trigger:hover {
  color: var(--cts-teal);
}

.faq-item__icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--border);
  color: var(--text-muted);
  transition: transform 0.35s var(--ease), background var(--transition);
}

.faq-item.is-open .faq-item__icon {
  transform: rotate(45deg);
  background: var(--gradient-brand-soft);
  color: var(--cts-teal);
  border-color: var(--border-hover);
}

.faq-item__panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.35s var(--ease);
}

.faq-item.is-open .faq-item__panel {
  grid-template-rows: 1fr;
}

.faq-item__panel-inner {
  overflow: hidden;
}

.faq-item__answer {
  padding: 0 1.25rem 1.15rem;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ---- Placeholder (testimonials / portfolio) ---- */
.placeholder-section {
  text-align: center;
}

.placeholder-card {
  max-width: 560px;
  margin: 0 auto;
  padding: 2.5rem 2rem;
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-card);
}

.placeholder-card p {
  color: var(--text-muted);
  font-size: 0.9375rem;
  line-height: 1.6;
}

/* ---- Service learn more ---- */
.service-card {
  display: flex;
  flex-direction: column;
}

.service-card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: auto;
  padding-top: 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--cts-teal);
  transition: gap var(--transition), color var(--transition);
}

.service-card__link:hover {
  gap: 0.55rem;
  color: var(--cts-cyan);
}

.service-card__link svg {
  width: 16px;
  height: 16px;
}

/* ---- Form states ---- */
.form-error {
  margin-top: 0.75rem;
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  color: #fca5a5;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.25);
  border-radius: var(--radius-sm);
}

[data-theme="light"] .form-error {
  color: #b91c1c;
  background: rgba(239, 68, 68, 0.08);
}

.form-group input:invalid:not(:placeholder-shown),
.form-group textarea:invalid:not(:placeholder-shown),
.form-group select:invalid {
  border-color: rgba(239, 68, 68, 0.45);
}

.btn.is-loading {
  pointer-events: none;
  opacity: 0.85;
  position: relative;
}

.btn.is-loading::after {
  content: '';
  width: 16px;
  height: 16px;
  margin-inline-start: 0.5rem;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: ctsSpin 0.7s linear infinite;
  display: inline-block;
  vertical-align: middle;
}

@keyframes ctsSpin {
  to { transform: rotate(360deg); }
}

/* ---- Search overlay ---- */
.search-overlay {
  position: fixed;
  inset: 0;
  z-index: 10100;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 10vh 1rem 2rem;
  background: rgba(4, 8, 14, 0.65);
  backdrop-filter: blur(8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s var(--ease);
}

.search-overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

.search-overlay__panel {
  width: min(560px, 100%);
  background: var(--bg-glass);
  backdrop-filter: blur(24px);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transform: translateY(-12px) scale(0.98);
  transition: transform 0.3s var(--ease);
}

.search-overlay.is-open .search-overlay__panel {
  transform: translateY(0) scale(1);
}

.search-overlay__header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.1rem;
  border-bottom: 1px solid var(--border);
}

.search-overlay__input {
  flex: 1;
  border: none;
  background: transparent;
  font-size: 1rem;
  color: var(--text-primary);
  outline: none;
}

.search-overlay__input::placeholder {
  color: var(--text-muted);
}

.search-overlay__kbd {
  font-size: 0.6875rem;
  padding: 0.2rem 0.45rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  color: var(--text-muted);
  white-space: nowrap;
}

.search-overlay__results {
  max-height: 320px;
  overflow-y: auto;
  padding: 0.5rem;
}

.search-result {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  width: 100%;
  padding: 0.75rem 0.85rem;
  text-align: start;
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: background var(--transition);
}

.search-result:hover,
.search-result.is-active {
  background: var(--gradient-brand-soft);
}

.search-result__type {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--cts-teal);
}

.search-result__title {
  font-size: 0.9375rem;
  font-weight: 600;
}

.search-result__desc {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.search-overlay__empty {
  padding: 2rem 1rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.nav__search {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-secondary);
  transition: all var(--transition);
}

.nav__search:hover {
  border-color: var(--border-hover);
  color: var(--cts-teal);
  transform: scale(1.05);
}

/* ---- Back to top ---- */
.back-to-top {
  position: fixed;
  bottom: 1.25rem;
  right: 1.25rem;
  z-index: 10040;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--border-hover);
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  color: var(--text-primary);
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease), visibility 0.3s;
}

html[dir="rtl"] .back-to-top {
  right: auto;
  left: 1.25rem;
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  border-color: var(--cts-teal);
  color: var(--cts-teal);
  box-shadow: var(--shadow-glow);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
}

/* ---- Floating contact ---- */
.float-contact {
  position: fixed;
  bottom: 1.25rem;
  left: 1.25rem;
  z-index: 10040;
  display: flex;
  flex-direction: column-reverse;
  align-items: flex-start;
  gap: 0.65rem;
}

html[dir="rtl"] .float-contact {
  left: auto;
  right: 1.25rem;
  align-items: flex-end;
}

.float-contact__toggle {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-brand);
  color: #041018;
  border: none;
  box-shadow: var(--shadow-md), 0 0 32px rgba(16, 185, 180, 0.25);
  transition: transform 0.25s var(--ease), box-shadow var(--transition);
}

.float-contact__toggle:hover {
  transform: scale(1.06);
  box-shadow: var(--shadow-lg), 0 0 40px rgba(16, 185, 180, 0.35);
}

.float-contact__toggle svg {
  width: 24px;
  height: 24px;
  transition: transform 0.3s var(--ease);
}

.float-contact.is-open .float-contact__toggle svg {
  transform: rotate(45deg);
}

.float-contact__menu {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all 0.25s var(--ease);
}

.float-contact.is-open .float-contact__menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.float-contact__link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0.9rem;
  font-size: 0.8125rem;
  font-weight: 600;
  white-space: nowrap;
  color: var(--text-primary);
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: 999px;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition), transform var(--transition);
  cursor: pointer;
  font-family: inherit;
  text-decoration: none;
}

.float-contact__link:hover {
  border-color: var(--border-hover);
  transform: translateX(4px);
}

html[dir="rtl"] .float-contact__link:hover {
  transform: translateX(-4px);
}

.float-contact__link svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.float-contact__link--wa {
  color: #25d366;
}

/* ---- Nav logo hover ---- */
.nav__logo {
  transition: transform 0.35s var(--ease), filter var(--transition);
}

.nav__logo:hover {
  transform: scale(1.03);
  filter: drop-shadow(0 0 12px rgba(16, 185, 180, 0.25));
}

.nav__link {
  position: relative;
}

.nav__link.is-active::after {
  content: '';
  position: absolute;
  bottom: 0.15rem;
  left: 0.65rem;
  right: 0.65rem;
  height: 2px;
  border-radius: 2px;
  background: var(--gradient-brand);
}

/* ---- Footer accent ---- */
.footer__accent {
  height: 3px;
  background: var(--gradient-brand);
  opacity: 0.85;
}

.footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 0.5rem;
}

.footer__legal a {
  font-size: 0.8125rem;
  color: var(--text-muted);
  transition: color var(--transition);
}

.footer__legal a:hover {
  color: var(--cts-teal);
}

/* ---- 404 page ---- */
.page-404 {
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6rem 1.5rem 3rem;
  text-align: center;
}

.page-404__code {
  font-family: var(--font-display);
  font-size: clamp(4rem, 12vw, 7rem);
  font-weight: 800;
  line-height: 1;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.5rem;
}

.page-404__title {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  margin-bottom: 0.75rem;
}

.page-404__desc {
  color: var(--text-muted);
  max-width: 42ch;
  margin: 0 auto 1.75rem;
}

/* ---- Reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
  .stat-card:hover,
  .service-card:hover,
  .nav__logo:hover,
  .float-contact__toggle:hover,
  .back-to-top,
  .search-overlay__panel {
    transform: none !important;
    transition: none !important;
  }

  .faq-item__panel {
    transition: none;
  }

  .faq-item.is-open .faq-item__panel {
    grid-template-rows: 1fr;
  }
}

@media (max-width: 1024px) {
  .stats-band__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .stats-band__grid {
    grid-template-columns: 1fr 1fr;
    gap: 0.85rem;
  }

  .stat-card {
    padding: 1.35rem 1rem;
  }

  .nav__search {
    display: none;
  }

  .float-contact {
    bottom: 5.5rem;
  }

  .back-to-top {
    bottom: 5.5rem;
  }
}

@media (max-width: 480px) {
  .stats-band__grid {
    grid-template-columns: 1fr;
  }
}