/* ===== BREADCRUMB ===== */
.breadcrumb {
  padding: 1rem 0;
  margin-bottom: 1.5rem;
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.875rem;
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: rgba(255, 255, 255, 0.6);
}

.breadcrumb-item a {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: color 0.2s ease;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
}

.breadcrumb-item a:hover {
  color: var(--primary-text);
  background: rgba(255, 255, 255, 0.05);
}

.breadcrumb-item--active {
  color: #fff;
  font-weight: 500;
}

.breadcrumb-separator {
  color: rgba(255, 255, 255, 0.3);
  flex-shrink: 0;
}

/* ===== PROGRESS BAR ===== */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  z-index: 1001;
  background: rgba(255, 255, 255, 0.1);
}

.reading-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-color), #16a34a);
  width: 0%;
  transition: width 0.1s ease-out;
  box-shadow: 0 0 10px var(--primary-color);
}

body.has-alert .reading-progress {
  top: 44px;
}

header.has-alert + .reading-progress {
  top: 124px;
}

/* ===== COPY LINK BUTTONS ===== */
.heading-anchor {
  position: relative;
  scroll-margin-top: 120px;
}

.copy-link-btn {
  opacity: 0;
  position: absolute;
  left: -1.75rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1.5rem;
  height: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  color: rgba(255, 255, 255, 0.6);
  cursor: pointer;
  transition: all 0.2s ease;
}

.heading-anchor:hover .copy-link-btn {
  opacity: 1;
}

.copy-link-btn:hover {
  background: rgba(34, 197, 94, 0.15);
  border-color: var(--primary-color);
  color: var(--primary-text);
  transform: translateY(-50%) scale(1.1);
}

.copy-link-btn.copied {
  background: var(--primary-color);
  color: #000;
}

/* ===== TOAST NOTIFICATIONS ===== */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  pointer-events: none;
}

.toast {
  min-width: 280px;
  padding: 1rem 1.25rem;
  background: rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(12px);
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: #fff;
  font-size: 0.875rem;
  pointer-events: all;
  animation: toastSlideIn 0.3s ease;
  transform-origin: bottom right;
}

.toast.toast--success {
  border-color: var(--primary-color);
}

.toast.toast--error {
  border-color: #ef4444;
}

.toast.toast--info {
  border-color: #3b82f6;
}

.toast-icon {
  flex-shrink: 0;
}

.toast-icon svg {
  width: 20px;
  height: 20px;
}

.toast.toast--success .toast-icon {
  color: var(--primary-text);
}

.toast.toast--error .toast-icon {
  color: #ef4444;
}

.toast.toast--info .toast-icon {
  color: #3b82f6;
}

.toast-message {
  flex: 1;
}

.toast.removing {
  animation: toastSlideOut 0.3s ease forwards;
}

@keyframes toastSlideIn {
  from {
    opacity: 0;
    transform: translateX(100%) scale(0.8);
  }
  to {
    opacity: 1;
    transform: translateX(0) scale(1);
  }
}

@keyframes toastSlideOut {
  to {
    opacity: 0;
    transform: translateX(100%) scale(0.8);
  }
}

/* ===== LOADING SPINNER ===== */
.loading-spinner {
  display: inline-block;
  width: 40px;
  height: 40px;
  position: relative;
}

.loading-spinner::after {
  content: '';
  display: block;
  width: 32px;
  height: 32px;
  margin: 4px;
  border-radius: 50%;
  border: 3px solid;
  border-color: var(--primary-color) transparent var(--primary-color) transparent;
  animation: spinnerRotate 1.2s linear infinite;
}

.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.loading-overlay.active {
  opacity: 1;
  pointer-events: all;
}

@keyframes spinnerRotate {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* ===== UTILITY TRANSITIONS ===== */
.transition-all {
  transition: all 0.3s ease;
}

.transition-colors {
  transition: color 0.3s ease, background-color 0.3s ease, border-color 0.3s ease;
}

.transition-transform {
  transition: transform 0.3s ease;
}

.transition-opacity {
  transition: opacity 0.3s ease;
}

/* ===== ENHANCED HOVER STATES ===== */
.hover-lift {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.hover-scale {
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.hover-scale:hover {
  transform: scale(1.05);
}

.hover-rotate {
  transition: transform 0.3s ease;
}

.hover-rotate:hover {
  transform: rotate(2deg) scale(1.02);
}

.hover-glow {
  transition: box-shadow 0.3s ease, border-color 0.3s ease;
}

.hover-glow:hover {
  box-shadow: 0 0 20px rgba(34, 197, 94, 0.3), 0 8px 32px rgba(0, 0, 0, 0.3);
  border-color: var(--primary-color);
}

/* ===== ENHANCED SHADOWS ===== */
.shadow-deep {
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6), 0 0 1px rgba(255, 255, 255, 0.1);
}

.shadow-glow {
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), 0 0 1px rgba(34, 197, 94, 0.2);
}

.border-glow {
  border: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
}

.border-glow::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.3), transparent, rgba(34, 197, 94, 0.1));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.border-glow:hover::before {
  opacity: 1;
}

/* ===== LIGHT THEME ===== */
html[data-theme="light"] .breadcrumb-item {
  color: rgba(0, 0, 0, 0.6);
}

html[data-theme="light"] .breadcrumb-item a {
  color: rgba(0, 0, 0, 0.7);
}

html[data-theme="light"] .breadcrumb-item a:hover {
  background: rgba(0, 0, 0, 0.05);
}

html[data-theme="light"] .breadcrumb-item--active {
  color: #1b1b1b;
}

html[data-theme="light"] .toast {
  background: rgba(255, 255, 255, 0.95);
  color: #1b1b1b;
  border-color: rgba(0, 0, 0, 0.15);
}

@media (max-width: 768px) {
  .copy-link-btn {
    opacity: 1;
    position: static;
    transform: none;
    margin-left: 0.5rem;
  }
  
  .toast-container {
    left: 1rem;
    right: 1rem;
  }
  
  .toast {
    min-width: auto;
  }
}

/* ===== INSTALL PROGRESS (STEPPER + PREV/NEXT) ===== */
.install-progress {
  margin: 0 0 2rem;
  padding: 1rem 1.25rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
}

.install-progress__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
  font-size: 0.8rem;
}

.install-progress__back {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--primary-text);
  text-decoration: none;
  opacity: 0.7;
  transition: opacity 0.2s;
}

.install-progress__back:hover { opacity: 1; }

.install-progress__count {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.78rem;
}

.install-progress__bar-wrap {
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 1rem;
}

.install-progress__bar {
  height: 100%;
  background: var(--primary-color);
  border-radius: 2px;
  transition: width 0.4s ease;
}

.install-progress__steps {
  display: flex;
  gap: 0.35rem;
  list-style: none;
  margin: 0;
  padding: 0;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.install-progress__steps::-webkit-scrollbar { display: none; }

.install-progress__step a {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.6rem 0.3rem 0.35rem;
  border-radius: 20px;
  text-decoration: none;
  white-space: nowrap;
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.45);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: color 0.2s, background 0.2s;
}

.install-progress__step a:hover {
  color: rgba(255, 255, 255, 0.8);
  background: rgba(255, 255, 255, 0.09);
}

.install-progress__dot {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  font-size: 0.7rem;
  font-weight: 600;
  flex-shrink: 0;
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.4);
}

/* Done step */
.install-progress__step--done a {
  color: rgba(255, 255, 255, 0.55);
}

.install-progress__step--done .install-progress__dot {
  background: var(--primary-color);
  color: #fff;
  font-size: 0;
}

.install-progress__step--done .install-progress__dot::after {
  content: '';
  display: block;
  width: 6px;
  height: 10px;
  border: 2px solid #fff;
  border-top: none;
  border-left: none;
  transform: rotate(45deg) translateY(-1px);
}

/* Current step */
.install-progress__step--current a {
  color: #fff;
  background: rgba(255, 255, 255, 0.09);
  border-color: var(--primary-color);
  font-weight: 600;
}

.install-progress__step--current .install-progress__dot {
  background: var(--primary-color);
  color: #fff;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary-color) 25%, transparent);
}

/* hide labels on small screens, keep dots */
@media (max-width: 600px) {
  .install-progress__label { display: none; }
  .install-progress__step a { padding: 0.3rem; }
}

/* Light theme overrides */
html[data-theme="light"] .install-progress {
  background: rgba(0, 0, 0, 0.04);
  border-color: rgba(0, 0, 0, 0.12);
}

html[data-theme="light"] .install-progress__back { color: var(--primary-text); }
html[data-theme="light"] .install-progress__count { color: rgba(0, 0, 0, 0.45); }
html[data-theme="light"] .install-progress__bar-wrap { background: rgba(0, 0, 0, 0.08); }

html[data-theme="light"] .install-progress__step a {
  color: rgba(0, 0, 0, 0.45);
  background: rgba(0, 0, 0, 0.03);
  border-color: rgba(0, 0, 0, 0.08);
}

html[data-theme="light"] .install-progress__step a:hover {
  color: rgba(0, 0, 0, 0.75);
  background: rgba(0, 0, 0, 0.07);
}

html[data-theme="light"] .install-progress__dot {
  background: rgba(0, 0, 0, 0.06);
  color: rgba(0, 0, 0, 0.4);
}

html[data-theme="light"] .install-progress__step--current a {
  color: #1a1a1a;
}

/* ===== PREV / NEXT NAV ===== */
.install-nav {
  display: flex;
  gap: 1rem;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

html[data-theme="light"] .install-nav {
  border-top-color: rgba(0, 0, 0, 0.1);
}

.install-nav__prev,
.install-nav__next {
  flex: 1;
}

.install-nav__next { text-align: right; }

.install-nav__btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 1rem;
  border-radius: 10px;
  text-decoration: none;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.04);
  color: rgba(255, 255, 255, 0.75);
  transition: border-color 0.2s, background 0.2s, color 0.2s;
  max-width: 260px;
}

.install-nav__btn:hover {
  border-color: var(--primary-color);
  background: rgba(255, 255, 255, 0.07);
  color: #fff;
}

.install-nav__btn--next { margin-left: auto; }

.install-nav__arrow {
  flex-shrink: 0;
  opacity: 0.5;
  transition: opacity 0.2s;
}

.install-nav__btn:hover .install-nav__arrow { opacity: 1; }

.install-nav__text {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  min-width: 0;
}

.install-nav__text small {
  display: block;
  font-size: 0.7rem;
  opacity: 0.45;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  line-height: 1;
}

.install-nav__text > span {
  font-size: 0.875rem;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

html[data-theme="light"] .install-nav__btn {
  border-color: rgba(0, 0, 0, 0.1);
  background: rgba(0, 0, 0, 0.03);
  color: rgba(0, 0, 0, 0.7);
}

html[data-theme="light"] .install-nav__btn:hover {
  border-color: var(--primary-color);
  background: rgba(0, 0, 0, 0.06);
  color: #1a1a1a;
}

html[data-theme="light"] .install-nav__text small { opacity: 0.35; }

/* ===== CHANGELOG ANCHOR BUTTON ===== */
.changelog-anchor {
  display: inline-flex;
  align-items: center;
  margin-left: 0.5rem;
  padding: 0.15rem 0.3rem;
  border-radius: 4px;
  color: rgba(255, 255, 255, 0.35);
  text-decoration: none;
  opacity: 0;
  transition: opacity 0.2s, color 0.2s;
  vertical-align: middle;
}

details:hover .changelog-anchor,
summary:focus-visible .changelog-anchor {
  opacity: 1;
}

.changelog-anchor:hover {
  color: var(--primary-text);
  opacity: 1;
}

html[data-theme="light"] .changelog-anchor { color: rgba(0, 0, 0, 0.3); }
html[data-theme="light"] .changelog-anchor:hover { color: var(--primary-text); }