/* ============================
   BUTTONS
   ============================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-family);
  font-weight: 600;
  font-size: var(--font-size-body);
  border-radius: var(--radius-xl);
  border: 2px solid transparent;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, transform 0.15s, box-shadow 0.2s;
  text-decoration: none;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn--sm {
  padding: 8px 16px;
  font-size: var(--font-size-sm);
}

.btn--md {
  padding: 12px 24px;
  font-size: var(--font-size-body);
}

.btn--lg {
  padding: 16px 32px;
  font-size: var(--font-size-body-lg);
}

.btn--primary {
  background: var(--color-primary);
  color: #FFFFFF;
}

.btn--primary:hover {
  box-shadow: 0 4px 20px rgba(124, 58, 237, 0.4), 0 0 40px rgba(124, 58, 237, 0.12);
}

.btn--accent {
  background: var(--color-accent);
  color: #111827;
}

.btn--accent:hover {
  box-shadow: 0 4px 20px rgba(102, 220, 126, 0.4), 0 0 40px rgba(102, 220, 126, 0.12);
}

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

.btn--outlined:hover {
  background: rgba(124, 58, 237, 0.08);
}

.btn--outlined-white {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.5);
  color: #FFFFFF;
}

.btn--outlined-white:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #FFFFFF;
}

.btn--outlined-accent {
  background: transparent;
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn--outlined-accent:hover {
  background: rgba(102, 220, 126, 0.1);
}

/* ============================
   CARDS
   ============================ */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-2xl);
  border: 1px solid rgba(255, 255, 255, 0.8);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.card--glass {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.card--dark {
  background: rgba(15, 10, 40, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* ============================
   NAVIGATION
   ============================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: var(--space-lg) 0;
}

.nav__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.nav__brand {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.nav__brand-img {
  height: 20px;
  width: auto;
  display: block;
}

/* Legacy icon+text brand (kept for backwards compat) */
.nav__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: rgba(124, 58, 237, 0.25);
  border: 1px solid rgba(124, 58, 237, 0.4);
  font-size: 18px;
}

.nav__logo-text {
  font-size: var(--font-size-body-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav__links {
  display: none;
  align-items: center;
  gap: var(--space-2xl);
}

.nav__link {
  color: rgba(255, 255, 255, 0.8);
  font-size: var(--font-size-body);
  font-weight: 500;
  transition: color 0.2s;
}

.nav__link:hover {
  color: #FFFFFF;
}

.nav__actions {
  display: none;
  align-items: center;
  gap: var(--space-md);
}

/* Hamburger */
.nav__hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: #FFFFFF;
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

.nav__hamburger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.nav__hamburger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu */
.nav__mobile-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: rgba(15, 10, 40, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--space-xl);
  flex-direction: column;
  gap: var(--space-lg);
}

.nav__mobile-menu.is-open {
  display: flex;
}

.nav__mobile-menu a {
  color: #FFFFFF;
  font-size: var(--font-size-body-lg);
  padding: var(--space-md) 0;
}

/* ============================
   FOOTER
   ============================ */
.footer {
  background: var(--footer-bg);
  color: rgba(255, 255, 255, 0.7);
  padding: var(--space-4xl) 0 var(--space-2xl);
}

.footer__container {
  display: flex;
  flex-direction: column;
  gap: var(--space-3xl);
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

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

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: #FFFFFF;
  font-weight: 700;
  font-size: var(--font-size-body-xl);
}

.footer__logo-img {
  height: 18px;
  width: auto;
  display: block;
}

.footer__tagline {
  font-size: var(--font-size-body);
  max-width: 320px;
  line-height: 1.6;
}

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

.footer__column h3 {
  color: #FFFFFF;
  font-size: var(--font-size-body);
  font-weight: 600;
  margin-bottom: var(--space-lg);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer__column a {
  display: block;
  font-size: var(--font-size-body);
  padding: var(--space-xs) 0;
  transition: color 0.2s;
}

.footer__column a:hover {
  color: #FFFFFF;
}

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

.footer__social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  transition: background 0.2s;
}

.footer__social a:hover {
  background: rgba(255, 255, 255, 0.2);
}

.footer__social svg {
  width: 18px;
  height: 18px;
  fill: rgba(255, 255, 255, 0.8);
}

.footer__bottom {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  padding-top: var(--space-2xl);
  margin-top: var(--space-2xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

.footer__bottom p {
  font-size: var(--font-size-xs);
}

.footer__bottom nav {
  display: flex;
  gap: var(--space-xl);
}

.footer__bottom nav a {
  font-size: var(--font-size-xs);
  transition: color 0.2s;
}

.footer__bottom nav a:hover {
  color: #FFFFFF;
}