/* ========== Loader ========== */
.loader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: grid;
  place-items: center;
  background: var(--bg-carbon);
  transition: opacity 0.6s var(--ease-out), visibility 0.6s;
}

.loader.is-done {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader__inner {
  text-align: center;
  width: min(320px, 80vw);
}

.loader__logo {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--text-white);
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  opacity: 0;
}

.loader__logo span {
  color: var(--accent-emerald);
}

.loader__code {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent-emerald);
  letter-spacing: 0.08em;
  min-height: 1.2em;
  margin-bottom: 1.25rem;
  opacity: 0.85;
}

.loader__bar {
  height: 2px;
  background: var(--border-subtle);
  border-radius: 2px;
  overflow: hidden;
}

.loader__progress {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent-emerald), var(--highlight-blue));
  box-shadow: 0 0 12px var(--accent-emerald-glow);
  transition: width 0.2s linear;
}

/* ========== Navigation ========== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: background 0.35s, border-color 0.35s, backdrop-filter 0.35s;
  border-bottom: 1px solid transparent;
}

.nav.is-scrolled {
  background: rgba(5, 7, 11, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--border-subtle);
}

.nav__inner {
  width: var(--container);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.nav__brand {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-white);
  letter-spacing: -0.03em;
  z-index: 1001;
}

.nav__brand span {
  color: var(--accent-emerald);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav__links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-silver);
  transition: color var(--duration) var(--ease-soft);
}

.nav__links a:hover,
.nav__links a:focus-visible {
  color: var(--text-white);
}

.nav__toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  place-items: center;
  z-index: 1001;
}

.nav__toggle span {
  display: block;
  width: 1.25rem;
  height: 1.5px;
  background: var(--text-white);
  position: relative;
  transition: background 0.25s;
}

.nav__toggle span::before,
.nav__toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 1.5px;
  background: var(--text-white);
  transition: transform 0.3s var(--ease-out);
}

.nav__toggle span::before {
  top: -6px;
}

.nav__toggle span::after {
  top: 6px;
}

.nav__toggle[aria-expanded="true"] span {
  background: transparent;
}

.nav__toggle[aria-expanded="true"] span::before {
  transform: translateY(6px) rotate(45deg);
}

.nav__toggle[aria-expanded="true"] span::after {
  transform: translateY(-6px) rotate(-45deg);
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.5rem;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: transform 0.35s var(--ease-out), background 0.3s, border-color 0.3s,
    box-shadow 0.3s, color 0.3s;
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn--primary {
  background: var(--accent-emerald);
  color: var(--bg-carbon);
  box-shadow: 0 0 24px var(--accent-emerald-dim);
}

.btn--primary:hover {
  box-shadow: 0 0 36px var(--accent-emerald-glow);
  transform: translateY(-1px);
}

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

.btn--ghost:hover {
  border-color: var(--highlight-blue);
  color: var(--highlight-blue);
  box-shadow: 0 0 20px var(--highlight-blue-dim);
}

.btn--lg {
  padding: 1rem 1.75rem;
  font-size: 0.95rem;
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

/* ========== Glass Panel ========== */
.glass {
  background: var(--bg-glass);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

.glass--glow {
  box-shadow: 0 0 0 1px var(--border-glow), inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

/* ========== Status Indicators ========== */
.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-emerald);
  box-shadow: 0 0 8px var(--accent-emerald-glow);
  animation: pulse-dot 2s ease-in-out infinite;
}

.status-dot--warn {
  background: #f5a623;
  box-shadow: 0 0 8px rgba(245, 166, 35, 0.5);
}

.status-dot--danger {
  background: var(--danger);
  box-shadow: 0 0 8px rgba(255, 77, 90, 0.5);
}

@keyframes pulse-dot {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.55;
    transform: scale(0.85);
  }
}

@media (prefers-reduced-motion: reduce) {
  .status-dot {
    animation: none;
  }
}