/*  ============================================================
    COMPONENTS.CSS — Reusable UI elements
    ============================================================ 
*/

/* ── Navigation ── */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(8, 17, 31, 0.75);
  border-bottom: 1px solid rgba(30, 51, 72, 0.6);
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) 0;
  gap: var(--space-sm);
}

.nav-logo {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--text);
  text-decoration: none;
}

.nav-logo span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.9rem;
  color: var(--muted);
  text-decoration: none;
  position: relative;
  transition: color var(--transition);
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -3px;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width var(--transition);
}

.nav-links a:hover {
  color: var(--text);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.nav-cta {
  font-size: 0.82rem;
  font-weight: 500;
  padding: 0.5rem var(--space-sm);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(20, 184, 166, 0.35);
  color: var(--accent);
  background: rgba(20, 184, 166, 0.06);
  text-decoration: none;
  transition: background var(--transition), border-color var(--transition);
  white-space: nowrap;
}

.nav-cta:hover {
  background: rgba(20, 184, 166, 0.12);
  border-color: rgba(20, 184, 166, 0.6);
}

/* ── Language Toggle ── */
.lang-toggle {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.2rem;
}

.lang-btn {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.25rem 0.6rem;
  border-radius: 5px;
  border: none;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
  font-family: var(--font-body);
  letter-spacing: 0.05em;
}

.lang-btn.active {
  background: var(--accent);
  color: #061318;
}

.lang-btn:hover:not(.active) {
  color: var(--text);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.4rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  font-family: var(--font-body);
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition:
    transform var(--transition),
    box-shadow var(--transition),
    background var(--transition),
    border-color var(--transition);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--accent);
  color: #061318;
  box-shadow: 0 8px 24px var(--accent-glow);
}

.btn-primary:hover {
  background: #1dcfbc;
  box-shadow: 0 12px 32px var(--accent-glow);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border2);
}

.btn-ghost:hover {
  background: var(--surface);
  border-color: var(--muted);
}

.btn-disabled {
  background: var(--surface);
  color: var(--faint);
  border-color: var(--border);
  cursor: not-allowed;
  opacity: 0.6;
}

.btn-disabled:hover {
  transform: none;
}

/* ── Cards ── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  transition:
    transform var(--transition),
    border-color var(--transition),
    box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--accent-glow),
    transparent
  );
  opacity: 0;
  transition: opacity var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--border2);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.35);
}

.card:hover::before {
  opacity: 1;
}

/* ── Badges ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  letter-spacing: 0.04em;
}

.badge-accent {
  background: rgba(20, 184, 166, 0.12);
  color: var(--accent);
  border: 1px solid rgba(20, 184, 166, 0.25);
}

.badge-muted {
  background: var(--surface2);
  color: var(--muted);
  border: 1px solid var(--border);
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2.5s ease-in-out infinite;
}

/* ── Chips (skill tags) ── */
.chip {
  font-size: 0.78rem;
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-sm);
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--muted);
  letter-spacing: 0.02em;
}

/* ── Keyframe Animations ── */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
    box-shadow: 0 0 10px var(--accent);
  }
  50% {
    opacity: 0.5;
    box-shadow: 0 0 4px var(--accent);
  }
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-6px); }
}

@keyframes enter {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── Scroll Reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ── Hero Entrance ── */
.hero-enter {
  opacity: 0;
  transform: translateY(16px);
  animation: enter 0.7s ease forwards;
}

.hero-enter-1 { animation-delay: 0.05s; }
.hero-enter-2 { animation-delay: 0.15s; }
.hero-enter-3 { animation-delay: 0.25s; }
.hero-enter-4 { animation-delay: 0.35s; }
.hero-enter-5 { animation-delay: 0.45s; }

/* ── Footer ── */
footer {
  border-top: 1px solid var(--border);
  padding: var(--space-md) 0;
  position: relative;
  z-index: 1;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.82rem;
  color: var(--faint);
}

@media (max-width: 640px) {
  .footer-inner {
    flex-direction: column;
    text-align: center;
  }

  .nav-links {
    display: none;
  }
}