/* ============================================
   Shared UI Components
   ============================================ */

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.75rem;
  font-size: var(--fs-body);
  font-weight: var(--fw-semibold);
  border-radius: var(--radius-full);
  transition: all var(--transition-normal);
  white-space: nowrap;
  border: 2px solid transparent;
}

.btn--primary {
  background: var(--gradient-brand);
  color: var(--color-white);
  border-color: transparent;
}

.btn--primary:hover {
  box-shadow: var(--shadow-teal-lg);
  transform: translateY(-2px);
}

.btn--secondary {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn--secondary:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn--ghost {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.3);
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.5);
}

.btn--large {
  padding: 1rem 2.25rem;
  font-size: var(--fs-body-lg);
}

.btn--small {
  padding: 0.5rem 1.25rem;
  font-size: var(--fs-small);
}

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

.btn-group {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  justify-content: center;
}

/* ---- Navigation ---- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: var(--z-nav);
  transition: all var(--transition-normal);
}

.nav--transparent {
  background: transparent;
}

.nav--scrolled {
  background: rgba(11, 17, 32, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.nav__inner {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: flex;
  align-items: center;
  z-index: calc(var(--z-nav) + 1);
}

.nav__logo img {
  height: 44px;
  width: auto;
  object-fit: contain;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-2xl);
}

.nav__link {
  font-size: var(--fs-small);
  font-weight: var(--fw-medium);
  color: rgba(255, 255, 255, 0.8);
  transition: color var(--transition-fast);
  position: relative;
}

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

.nav__link--active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-brand);
  border-radius: var(--radius-full);
}

.nav__cta {
  margin-left: var(--space-lg);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  z-index: calc(var(--z-nav) + 1);
  padding: 4px;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  border-radius: var(--radius-full);
  transition: all var(--transition-normal);
}

.nav__toggle--open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.nav__toggle--open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile nav panel */
.nav__mobile-panel {
  display: none;
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  height: 100vh;
  background: rgba(11, 17, 32, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-2xl);
  transition: right var(--transition-slow);
  z-index: var(--z-nav);
}

.nav__mobile-panel--open {
  right: 0;
}

.nav__mobile-panel .nav__link {
  font-size: var(--fs-h3);
  color: rgba(255, 255, 255, 0.8);
}

.nav__mobile-panel .nav__link:hover,
.nav__mobile-panel .nav__link--active {
  color: var(--color-white);
}

/* ---- Footer ---- */
.footer {
  background: var(--color-dark);
  color: var(--color-gray-400);
  padding: var(--space-4xl) 0 var(--space-xl);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}

.footer__brand-desc {
  font-size: var(--fs-small);
  line-height: var(--line-height-relaxed);
  margin-top: var(--space-md);
  color: var(--color-gray-500);
}

.footer__social-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: var(--space-md);
  color: var(--color-gray-400);
  text-decoration: none;
  font-size: var(--fs-small);
  transition: color 0.2s ease;
}

.footer__social-link:hover {
  color: #ffffff;
}

.footer__social-icon {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.footer__logo img {
  height: 52px;
  width: auto;
}

.footer__heading {
  font-size: var(--fs-small);
  font-weight: var(--fw-semibold);
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  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(--color-gray-500);
  transition: color var(--transition-fast);
}

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

.footer__bottom {
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--fs-xs);
  color: var(--color-gray-600);
}

/* ---- Cards ---- */
.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.card .badge {
  margin-top: auto;
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.card--feature {
  text-align: center;
}

.card--feature .card__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-lg);
  border-radius: var(--radius-md);
}

.card--feature .card__title {
  font-size: var(--fs-h4);
  margin-bottom: var(--space-sm);
}

.card--feature .card__desc {
  font-size: var(--fs-small);
  color: var(--color-gray-500);
  line-height: var(--line-height-relaxed);
}

.card--dark {
  background: var(--color-dark-surface);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.card--dark:hover {
  border-color: rgba(27, 153, 134, 0.3);
}

.card--dark .card__title {
  color: var(--color-white);
}

.card--dark .card__desc {
  color: var(--color-gray-400);
}

/* ---- Badge ---- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge--teal {
  background: rgba(27, 153, 134, 0.15);
  color: var(--color-primary);
}

.badge--new {
  background: var(--gradient-brand);
  color: var(--color-white);
}

.badge--popular {
  background: var(--gradient-brand);
  color: var(--color-white);
}

/* ---- Tab Group ---- */
.tab-group {
  display: flex;
  gap: var(--space-sm);
  padding: 4px;
  background: var(--color-gray-100);
  border-radius: var(--radius-full);
  width: fit-content;
  margin: 0 auto var(--space-2xl);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.tab-btn {
  padding: 0.65rem 1.5rem;
  font-size: var(--fs-small);
  font-weight: var(--fw-medium);
  color: var(--color-gray-500);
  border-radius: var(--radius-full);
  transition: all var(--transition-normal);
  cursor: pointer;
}

.tab-btn:hover {
  color: var(--color-dark);
}

.tab-btn--active {
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-sm);
}

.tab-panel {
  display: none;
  animation: fadeIn 0.4s ease;
}

.tab-panel--active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---- Accordion ---- */
.accordion-item {
  border-bottom: 1px solid var(--color-gray-200);
}

.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg) 0;
  font-size: var(--fs-body);
  font-weight: var(--fw-medium);
  color: var(--color-dark);
  text-align: left;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.accordion-trigger:hover {
  color: var(--color-primary);
}

.accordion-icon {
  width: 24px;
  height: 24px;
  position: relative;
  flex-shrink: 0;
}

.accordion-icon::before,
.accordion-icon::after {
  content: '';
  position: absolute;
  background: currentColor;
  border-radius: 2px;
  transition: transform var(--transition-normal);
}

.accordion-icon::before {
  width: 14px;
  height: 2px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.accordion-icon::after {
  width: 2px;
  height: 14px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.accordion-item--open .accordion-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow), padding var(--transition-slow);
}

.accordion-item--open .accordion-content {
  max-height: 500px;
  padding-bottom: var(--space-lg);
}

.accordion-content p {
  color: var(--color-gray-500);
  line-height: var(--line-height-relaxed);
}

/* ---- Stats ---- */
.stat {
  text-align: center;
}

.stat__number {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: var(--fw-bold);
  color: var(--color-white);
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.stat__label {
  font-size: var(--fs-small);
  color: rgba(255, 255, 255, 0.8);
  font-weight: var(--fw-medium);
}

/* ---- Integration Icon Row ---- */
.integration-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.integration-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  transition: transform var(--transition-normal);
}

.integration-item:hover {
  transform: translateY(-4px);
}

.integration-item img,
.integration-item svg {
  width: 96px;
  height: 96px;
}

.integration-item span {
  font-size: 0.9375rem;
  font-weight: var(--fw-medium);
  color: var(--color-gray-400);
}

/* ---- Tag ---- */
.tag {
  display: inline-flex;
  padding: 0.2rem 0.6rem;
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  border-radius: var(--radius-sm);
  background: rgba(27, 153, 134, 0.1);
  color: var(--color-primary);
}

/* ---- Toast ---- */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--color-dark);
  color: var(--color-white);
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  font-size: var(--fs-small);
  z-index: var(--z-toast);
  transform: translateY(100px);
  opacity: 0;
  transition: all var(--transition-normal);
}

.toast--visible {
  transform: translateY(0);
  opacity: 1;
}

.toast--success {
  border-left: 4px solid var(--color-primary);
}

/* ---- Split Layout ---- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.split--reverse {
  direction: rtl;
}

.split--reverse > * {
  direction: ltr;
}

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

.split__image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.split__image img,
.split__image video {
  width: 100%;
  height: auto;
  display: block;
}

/* ---- Scroll Down Indicator ---- */
.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  color: rgba(255, 255, 255, 0.5);
  font-size: var(--fs-xs);
  animation: scrollBounce 2s infinite;
}

.scroll-indicator__mouse {
  width: 24px;
  height: 36px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 12px;
  position: relative;
}

.scroll-indicator__mouse::before {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: rgba(255, 255, 255, 0.5);
  border-radius: 2px;
  animation: scrollWheel 2s infinite;
}

@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

@keyframes scrollWheel {
  0% { opacity: 1; top: 6px; }
  100% { opacity: 0; top: 18px; }
}