/* ═══════════════════════════════════════════
   Components — Navbar, Buttons, Cards
   ═══════════════════════════════════════════ */

/* ── Buttons ── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: var(--text-sm);
  line-height: 1;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  white-space: nowrap;
  cursor: pointer;
}

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

.btn--primary:hover {
  background: var(--accent-light);
  box-shadow: 0 0 30px var(--accent-glow-strong);
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-hover);
}

.btn--ghost:hover {
  border-color: var(--text-tertiary);
  background: rgba(255, 255, 255, 0.03);
}

.btn--lg {
  font-size: var(--text-base);
  padding: var(--space-4) var(--space-8);
}

.btn--sm {
  font-size: var(--text-xs);
  padding: var(--space-2) var(--space-5);
}


/* ── Navbar ── */

.nav-sentinel {
  position: absolute;
  top: 0;
  height: 1px;
  width: 100%;
}

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background var(--transition-base),
              border-color var(--transition-base),
              backdrop-filter var(--transition-base);
}

.nav--scrolled {
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom-color: var(--border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
}

.nav__logo {
  display: flex;
  align-items: center;
}

.nav__monogram {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: var(--text-xl);
  color: var(--text-primary);
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--text-primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav__links {
  display: none;
  gap: var(--space-8);
}

.nav__link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition-base);
}

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

.nav__link:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav__cta {
  display: none;
}

/* Hamburger */
.nav__hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
}

.nav__hamburger-line {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.nav__hamburger--active .nav__hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav__hamburger--active .nav__hamburger-line:nth-child(2) {
  opacity: 0;
}

.nav__hamburger--active .nav__hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile menu */
.nav__mobile {
  position: fixed;
  inset: 0;
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
  z-index: 999;
}

.nav__mobile--open {
  opacity: 1;
  pointer-events: all;
}

.nav__mobile-links {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
}

.nav__mobile-link {
  font-size: var(--text-3xl);
  font-weight: 600;
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

.nav__mobile-link:hover {
  color: var(--accent);
}


/* ── Cards ── */

.card {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}

.card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--accent-glow);
  color: var(--accent);
  margin-bottom: var(--space-6);
}

.card__icon--gold {
  background: var(--gold-muted);
  color: var(--gold);
}

.card__title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
}

.card__text {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Glass variant */
.card--glass {
  background: rgba(26, 26, 36, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.card--glass:hover {
  border-color: var(--border-accent);
  box-shadow: var(--shadow-glow);
}