/* ========================================
   Components — Buttons, Cards, Nav, Footer, Forms
   TermiTec Product Website
   ======================================== */

/* === Navigation === */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: background-color var(--transition-base),
              box-shadow var(--transition-base);
}

.nav--scrolled {
  background-color: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  box-shadow: 0 1px 0 var(--border-subtle);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-lg);
}

.nav__logo {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-accent);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.nav__logo span {
  color: var(--accent-orange);  /* Orange brand highlight */
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav__link {
  font-size: var(--fs-small);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: color var(--transition-fast);
  position: relative;
  padding-block: var(--space-xs);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent-light);
  transition: width var(--transition-base);
}

.nav__link:hover,
.nav__link--active {
  color: var(--text-accent);
}

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

/* === Nav Dropdown === */
.nav__dropdown {
  position: relative;
}

.nav__dropdown > .nav__link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.nav__dropdown-arrow {
  display: inline-block;
  transition: transform 400ms var(--ease-out-expo);
}

.nav__dropdown:hover .nav__dropdown-arrow {
  transform: rotate(180deg);
}

.nav__dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-radius: 0 0 var(--border-radius-md) var(--border-radius-md);
  padding: 0;
  visibility: hidden;
  pointer-events: none;
  z-index: 1001;
  overflow: hidden;
  /* Slide-down reveal via clip-path */
  clip-path: inset(0 0 100% 0);
  transition: clip-path 350ms var(--ease-out-expo),
              visibility 350ms;
  /* Subtle bottom glow */
  box-shadow: 0 1px 0 var(--border-subtle),
              0 8px 24px rgba(0, 0, 0, 0.3);
}

/* Invisible hover bridge so mouse can travel from link to menu */
.nav__dropdown-menu::before {
  content: '';
  position: absolute;
  top: -12px;
  left: 0;
  right: 0;
  height: 12px;
}

.nav__dropdown:hover .nav__dropdown-menu {
  clip-path: inset(0 0 0 0);
  visibility: visible;
  pointer-events: auto;
}

/* Dropdown item */
.nav__dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  white-space: nowrap;
  position: relative;
  /* Stagger: item slides in from left with delay */
  transform: translateX(-10px);
  opacity: 0;
  transition: transform 350ms var(--ease-out-expo) 100ms,
              opacity 250ms ease 100ms;
}

.nav__dropdown:hover .nav__dropdown-item {
  transform: translateX(0);
  opacity: 1;
}

/* Left accent bar — scales in on hover */
.nav__dropdown-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 2px;
  height: 50%;
  background: var(--accent-orange);
  border-radius: 1px;
  transform: translateY(-50%) scaleY(0);
  transition: transform 300ms var(--ease-out-expo);
}

a.nav__dropdown-item:hover::before {
  transform: translateY(-50%) scaleY(1);
}

.nav__dropdown-name {
  font-size: var(--fs-small);
  color: var(--text-secondary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color 250ms ease,
              letter-spacing 300ms var(--ease-out-expo);
}

a.nav__dropdown-item:hover .nav__dropdown-name {
  color: var(--text-accent);
  letter-spacing: 0.12em;
}

/* === Mobile Dropdown === */
.nav__mobile-dropdown {
  display: flex;
  flex-direction: column;
}

.nav__mobile-link--parent {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  background: none;
  border: none;
  font-family: inherit;
  cursor: pointer;
  text-align: left;
}

.nav__mobile-arrow {
  transition: transform var(--transition-fast);
}

.nav__mobile-link--parent[aria-expanded="true"] .nav__mobile-arrow {
  transform: rotate(180deg);
}

.nav__mobile-submenu {
  display: none;
  flex-direction: column;
  padding-left: var(--space-lg);
}

.nav__mobile-submenu--open {
  display: flex;
}

.nav__mobile-sublink {
  font-size: 0.95rem;
  color: var(--text-secondary);
  padding-block: var(--space-xs);
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.nav__mobile-sublink:hover {
  color: var(--text-accent);
  padding-left: var(--space-sm);
}

/* Mobile Menu Toggle */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
  z-index: 1001;
}

.nav__toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--text-primary);
  transition: transform var(--transition-base), opacity var(--transition-fast);
}

.nav__toggle--open .nav__toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__toggle--open .nav__toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav__toggle--open .nav__toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Menu Panel */
.nav__mobile {
  position: fixed;
  top: 0;
  right: 0;
  width: min(320px, 85vw);
  height: 100vh;
  background-color: var(--bg-secondary);
  padding: calc(var(--nav-height) + var(--space-xl)) var(--space-xl) var(--space-xl);
  transform: translateX(100%);
  transition: transform var(--transition-base);
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.nav__mobile--open {
  transform: translateX(0);
}

.nav__mobile-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.6);
  z-index: 998;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.nav__mobile-overlay--visible {
  opacity: 1;
  pointer-events: auto;
}

.nav__mobile-link {
  font-size: 1.1rem;
  color: var(--text-secondary);
  padding-block: var(--space-sm);
  border-bottom: 1px solid var(--border-subtle);
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.nav__mobile-link:hover,
.nav__mobile-link--active {
  color: var(--text-accent);
  padding-left: var(--space-sm);
}

@media (max-width: 767px) {
  .nav__links {
    display: none;
  }

  .nav__toggle {
    display: flex;
  }
}

/* === Hero Section === */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
  z-index: -1;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: var(--overlay-gradient);
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xl);
  padding-top: var(--nav-height);
}


.hero__title {
  font-size: var(--fs-hero);
  font-weight: 800;
  color: var(--text-accent);
  text-transform: uppercase;
  letter-spacing: -0.02em;
  line-height: 1.05;
}

.hero__title-accent {
  background: linear-gradient(
    135deg,
    var(--accent-light),
    var(--accent-orange),
    var(--accent-light),
    var(--accent-hover)
  );
  background-size: 300% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: textShimmer 5s ease-in-out infinite;
}

.hero__subtitle {
  font-size: var(--fs-h4);
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.7;
}

/* Feature list spacing */
.features-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4xl);
}

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.75rem;
  font-size: var(--fs-small);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: var(--border-radius-md);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background-color: var(--btn-blue);
  color: var(--text-accent);
  box-shadow: 0 0 20px var(--btn-blue-glow);
}

.btn--primary:hover {
  background-color: var(--btn-blue-hover);
  box-shadow: 0 0 30px var(--btn-blue-glow-strong);
  transform: translateY(-2px);
}

.btn--outline {
  background-color: transparent;
  color: var(--accent-light);
  border: 1px solid var(--accent-primary);
}

.btn--outline:hover {
  background-color: var(--accent-primary);
  color: var(--text-accent);
  transform: translateY(-2px);
}

.btn--ghost {
  background-color: transparent;
  color: var(--text-primary);
  padding: 0.5rem 1rem;
}

.btn--ghost:hover {
  color: var(--accent-light);
}

.btn--lg {
  padding: 1rem 2.5rem;
  font-size: var(--fs-body);
}

/* === Products Grid — narrower cards === */
#products .grid--2 {
  max-width: 900px;
  margin-inline: auto;
}

/* === Cards === */
.card {
  background: var(--gradient-card), var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  position: relative;
  transition: transform 0.4s var(--ease-out-expo),
              border-color 0.4s var(--ease-out-expo),
              box-shadow 0.5s var(--ease-out-expo);
}

/* Card badges */
.card__badge {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  padding: 0.25rem 0.75rem;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: var(--border-radius-md);
  z-index: 2;
}

.card__badge--available {
  background-color: rgba(34, 197, 94, 0.15);
  color: #4ade80;
  border: 1px solid rgba(34, 197, 94, 0.3);
}

.card__badge--soon {
  background-color: rgba(255, 165, 0, 0.1);
  color: var(--accent-orange);
  border: 1px solid rgba(255, 165, 0, 0.25);
}

.card--soon {
  opacity: 0.7;
}

.card--soon:hover {
  opacity: 0.85;
  transform: translateY(-2px);
  cursor: default;
}

.card--soon .card__link {
  pointer-events: none;
  opacity: 0.4;
}

.card:hover {
  transform: translateY(-6px);
  border-color: transparent;
  box-shadow:
    0 0 40px var(--accent-glow),
    0 20px 60px rgba(0, 0, 0, 0.4);
  cursor: pointer;
}

.card__image {
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background-color: var(--bg-elevated);
}

.card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.card:hover .card__image img {
  transform: scale(1.05);
}

.card__body {
  padding: var(--space-lg);
}

.card__title {
  font-size: var(--fs-h4);
  color: var(--text-accent);
  margin-bottom: var(--space-sm);
}

.card__text {
  font-size: var(--fs-small);
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  line-height: 1.7;
}

.card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--accent-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: gap var(--transition-fast), color var(--transition-fast);
}

.card__link::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
}

.card__link:hover {
  gap: var(--space-sm);
  color: var(--accent-orange);
}

.card__link svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-fast);
}

.card__link:hover svg {
  transform: translateX(4px);
}

/* === Feature Items === */
.feature-row__media {
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  background-color: var(--bg-card);
  aspect-ratio: 16 / 9;
  max-height: 340px;
}

.feature-row__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.feature-row__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.feature-row__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--border-radius-md);
  background: linear-gradient(135deg, rgba(26, 63, 122, 0.3) 0%, rgba(232, 114, 42, 0.15) 100%);
  color: var(--accent-light);
  transform: scale(1.1) rotate(-3deg);
  box-shadow: 0 0 24px var(--accent-glow);
}

/* Glassmorphism feature icon */
.feature-row__icon--glass {
  width: 56px;
  height: 56px;
  background: rgba(18, 18, 26, 0.6);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--border-radius-md);
}


/* Glassmorphism feature media */
.feature-row__media--glass {
  background: rgba(18, 18, 26, 0.4);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3), 0 0 30px var(--accent-glow);
}

.feature-row__media--glass::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--border-radius-lg);
  background: radial-gradient(ellipse at 30% 20%, rgba(74, 128, 204, 0.08) 0%, transparent 60%);
  pointer-events: none;
}


.feature-row__icon svg {
  width: 24px;
  height: 24px;
}

.feature-row__title {
  font-size: var(--fs-h3);
  color: var(--text-accent);
}

.feature-row__text {
  font-size: var(--fs-body);
  color: var(--text-secondary);
  line-height: 1.8;
}

/* === Glass Container === */
.glass {
  background-color: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-xl);
  padding: var(--space-2xl);
}

/* === Footer === */
.footer {
  position: relative;
  background: var(--gradient-footer);
  padding-block: var(--space-3xl) var(--space-xl);
  overflow: hidden;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer__brand-text {
  font-size: var(--fs-small);
  color: var(--text-secondary);
  margin-top: var(--space-md);
  max-width: 300px;
  line-height: 1.7;
}

.footer__heading {
  font-size: var(--fs-label);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-accent);
  margin-bottom: var(--space-lg);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer__link {
  font-size: var(--fs-small);
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--accent-light);
}

.footer__bottom {
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  align-items: center;
  text-align: center;
}

.footer__copyright {
  font-size: var(--fs-small);
  color: var(--text-secondary);
}

.footer__legal {
  display: flex;
  gap: var(--space-lg);
}

.footer__legal a {
  font-size: var(--fs-small);
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.footer__legal a:hover {
  color: var(--text-primary);
}

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

  .footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

/* === Stats Section === */
.stat {
  text-align: center;
  padding: var(--space-xl);
}

/* Glassmorphism stat cards */
.stat--glass {
  background: rgba(18, 18, 26, 0.5);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--border-radius-lg);
  position: relative;
  overflow: hidden;
  transition: transform 0.4s var(--ease-out-expo),
              border-color 0.4s var(--ease-out-expo),
              box-shadow 0.4s var(--ease-out-expo);
}

.stat--glass::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(74, 128, 204, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.stat--glass:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3), 0 0 20px var(--accent-glow);
}

.stat__number {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
  background: linear-gradient(135deg, var(--accent-light), var(--accent-orange));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: var(--space-xs);
}

.stat__label {
  font-size: var(--fs-small);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* === Language Switcher === */
.lang-switch {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  padding: 0.3rem 0.85rem;
  font-size: var(--fs-small);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: color var(--transition-fast),
              border-color var(--transition-fast),
              background-color var(--transition-fast);
  line-height: 1;
  flex-shrink: 0;
}

.lang-switch:hover {
  color: var(--accent-orange);
  border-color: var(--accent-orange);
  background-color: rgba(232, 114, 42, 0.08);
}

.lang-switch--mobile {
  align-self: flex-start;
  margin-top: auto;
  padding: 0.5rem 1.25rem;
  font-size: 1rem;
}