/* ========================================
   COMPONENT STYLES
   ======================================== */

/* Snowfall overlay canvas */
#snowfall-canvas {
  position: fixed;
  inset: 0;
  pointer-events: none; /* never block clicks */
  z-index: 1; /* above backgrounds, below nav/menus assumed >1 */
}

/* ========================================
   NAVIGATION
   ======================================== */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(15, 27, 41, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  z-index: var(--z-overlay);
  transition: background-color var(--transition-base);
}

body[data-theme="snail"] .nav {
  background: rgba(15, 27, 41, 0.95) !important;
}

[data-theme="dark"] .nav {
  background: rgba(17, 24, 39, 0.95);
}

.nav__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  text-decoration: none;
  color: var(--color-text-primary);
}

.nav__logo {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
}

.nav__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-black);
  letter-spacing: 0.1em;
}

.nav__menu {
  display: none;
  list-style: none;
  gap: var(--space-xl);
  align-items: center;
}

.nav__link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  position: relative;
}

.nav__link:hover,
.nav__link.active {
  color: var(--color-primary);
  background: var(--color-bg-secondary);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: all var(--transition-fast);
  transform: translateX(-50%);
}

.nav__link.active::after {
  width: 80%;
}

.nav__controls {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav__mobile-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: 30px;
  height: 30px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.nav__mobile-icon {
  width: 100%;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 1px;
  transition: all var(--transition-base);
  position: relative;
}

.nav__mobile-icon::before,
.nav__mobile-icon::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 1px;
  transition: all var(--transition-base);
}

.nav__mobile-icon::before {
  top: -8px;
}

.nav__mobile-icon::after {
  top: 8px;
}

.nav__mobile-toggle[aria-expanded="true"] .nav__mobile-icon {
  background: transparent;
}

.nav__mobile-toggle[aria-expanded="true"] .nav__mobile-icon::before {
  transform: rotate(45deg);
  top: 0;
}

.nav__mobile-toggle[aria-expanded="true"] .nav__mobile-icon::after {
  transform: rotate(-45deg);
  top: 0;
}

/* Hide mobile toggle on mobile viewports */
@media (max-width: 768px) {
  .nav__mobile-toggle {
    display: none;
  }
  .nav__controls {
    display: none;
  }
}

/* ========================================
   BUTTONS
   ======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  border: 2px solid transparent;
  border-radius: var(--radius-xl);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  min-width: 120px;
}

/* Ensure anchor links styled as buttons behave consistently */
a.btn {
  color: inherit;
  text-decoration: none;
}

a.btn:hover {
  text-decoration: none;
}

a.btn:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Add specific styling for external links */
a.btn[target="_blank"]::after {
  content: '';
  display: inline-block;
  width: 12px;
  height: 12px;
  margin-left: var(--space-xs);
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpath d='M18 13v6a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h6'%3e%3c/path%3e%3cpolyline points='15,3 21,3 21,9'%3e%3c/polyline%3e%3cline x1='10' y1='14' x2='21' y2='3'%3e%3c/line%3e%3c/svg%3e");
  background-size: contain;
  background-repeat: no-repeat;
  opacity: 0.7;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s ease-in-out;
}

.btn:hover::before {
  left: 100%;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: var(--color-text-inverse);
  border-color: transparent;
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  filter: brightness(1.1);
}

.btn--secondary {
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
  border-color: var(--color-border-dark);
}

.btn--secondary:hover {
  background: var(--color-primary-dark);
  color: #fff;
  border-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn--full {
  width: 100%;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: var(--space-2xl) 0;
  margin-top: var(--space-5xl);
  scroll-margin-top: 20px; /* Add scroll margin for better positioning */
}

.footer__content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-lg);
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.footer__logo {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
}

.footer__text {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ========================================
   GENERIC DIVIDER (replacing medieval-divider)
   ======================================== */
.divider {
  width:100%;
  height:2px;
  background: linear-gradient(to right, transparent, var(--color-primary), transparent);
  margin: var(--space-4xl) 0;
  position:relative;
}
.divider::before,
.divider::after {
  content:'';
  position:absolute;
  top:50%;
  width:40px; height:2px;
  background: var(--color-primary-light);
  transform: translateY(-50%);
  opacity:.4;
}
.divider::before { left:10%; }
.divider::after { right:10%; }

.footer__links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.footer__link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-fast);
}

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

.footer__socials {
  display: flex;
  gap: var(--space-md);
  align-items: center;
}

.footer__social {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-lg);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.footer__social:hover {
  background: var(--color-primary);
  border-color: var(--color-primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.footer__social-icon {
  width: 20px;
  height: 20px;
  fill: var(--color-text-secondary);
  transition: fill var(--transition-fast);
}

.footer__social-icon path {
  fill: inherit;
}

.footer__social-icon rect {
  fill: inherit;
}

.footer__social:hover .footer__social-icon {
  fill: white;
}

/* Ensure Twitter-square SVG renders correctly: square uses twitter blue, bird inherits icon color */
.footer__social-icon .cls-1 {
  fill: #1da1f2; /* twitter blue */
}
.footer__social-icon .cls-2 {
  fill: white; /* white bird on blue background */
}

/* On hover, make the bird white and background darker */
.footer__social:hover .footer__social-icon .cls-1 {
  fill: var(--color-primary);
}
.footer__social:hover .footer__social-icon .cls-2 {
  fill: white;
}

/* ========================================
   LOADING
   ======================================== */

.loading {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.loading.hidden {
  opacity: 0;
  visibility: hidden;
}

.loading__snail {
  animation: float 2s ease-in-out infinite;
}

.loading__img {
  width: 80px;
  height: auto;
}

/* ========================================
   BACKGROUND CANVAS
   ======================================== */

.background-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: var(--z-background);
  pointer-events: none;
  opacity: 0.6;
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

@media (min-width: 480px) {
  .nav__container {
    padding: 0 var(--space-lg);
  }
}

@media (min-width: 768px) {
  .nav__menu {
    display: flex;
  }

  .nav__mobile-toggle {
    display: none;
  }

  .nav__container {
    padding: 0 var(--space-xl);
  }

  .footer__content {
    flex-wrap: nowrap;
  }
}

@media (min-width: 1024px) {
  .nav__container {
    padding: 0 var(--space-2xl);
  }
}

/* ========================================
   ANIMATIONS
   ======================================== */

@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

@keyframes rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* ========================================
   ACCESSIBILITY
   ======================================== */

@media (prefers-reduced-motion: reduce) {
  .btn::before {
    display: none;
  }
  
  .loading__snail {
    animation: none;
  }
  
  .hero__snail-img {
    animation: none;
    opacity: 1;
    transform: none;
  }
  
  .hero__title-line {
    animation: none;
    opacity: 1;
    transform: none;
  }
  
  .hero__subtitle,
  .hero__actions {
    animation: none;
    opacity: 1;
  }
}

/* ========================================
   ROADMAP (interactive timeline)
   ======================================== */
.roadmap__steps {
  display: grid;
  gap: var(--space-lg);
  position: relative;
  counter-reset: roadmap;
  padding-top: var(--space-xl);
  list-style: none;
  margin: var(--space-3xl) 0 var(--space-xl);
}

@media (min-width: 900px) {
  .roadmap__steps {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
  }
  .roadmap__steps::before {
    content: "";
    position: absolute;
    top: calc(var(--space-lg) + 4px);
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-border) 0%, var(--color-border-light) 100%);
    border-radius: 2px;
    opacity: .35;
  }
  .roadmap__steps::after {
    content: "";
    position: absolute;
    top: calc(var(--space-lg) + 4px);
    left: 0;
    height: 4px;
    background: var(--gradient-primary, linear-gradient(90deg,var(--color-primary),var(--color-accent)));
    border-radius: 2px;
    width: var(--roadmap-progress, 25%);
    transition: width 600ms ease;
    box-shadow: 0 0 0 1px rgba(255,255,255,.05), 0 0 8px -2px var(--color-primary);
  }
}

.roadmap__step {
  position: relative;
  background: var(--gradient-surface, linear-gradient(145deg, rgba(255,255,255,0.04), rgba(255,255,255,0.01)));
  border: 1px solid var(--color-border);
  padding: var(--space-lg) var(--space-md) var(--space-md);
  border-radius: var(--radius-lg);
  line-height: 1.4;
  cursor: pointer;
  isolation: isolate;
  outline: none;
  transition: border-color .3s, transform .35s cubic-bezier(.16,.8,.3,1), background .4s;
  backdrop-filter: blur(6px);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.roadmap__step::before {
  content: "";
  position: absolute;
  top: var(--space-sm);
  left: 50%;
  transform: translateX(-50%);
  width: 18px;
  height: 18px;
  border: 3px solid var(--color-border-light);
  background: var(--color-bg-primary);
  border-radius: 50%;
  z-index: 2;
  transition: background .4s, border-color .4s, box-shadow .4s;
}

.roadmap__badge {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--color-primary);
  color: white;
  border-radius: 50%;
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-md);
  font-size: var(--font-size-sm);
  position: relative;
  top: auto;
  left: auto;
  opacity: 1;
  pointer-events: auto;
}

.roadmap__detail {
  display: block;
  max-height: none;
  overflow: visible;
  transform: translateY(0);
  opacity: 1;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  text-align: center;
  margin-top: var(--space-sm);
}

.roadmap__step strong {
  display: block;
  margin-bottom: var(--space-sm);
  color: var(--color-text-primary);
  font-size: var(--font-size-base);
}

.roadmap__step:hover,
.roadmap__step:focus-visible {
  border-color: var(--color-border-light);
  transform: translateY(-4px);
}

.roadmap__step.is-current,
.roadmap__step:hover,
.roadmap__step:focus-visible {
  --pulse: 0 0 0 0 rgba(255,255,255,.4);
}

.roadmap__step.is-current::before,
.roadmap__step:hover::before,
.roadmap__step:focus-visible::before {
  background: var(--color-primary);
  border-color: var(--color-primary-light, var(--color-primary));
  box-shadow: 0 0 0 4px rgba(255,255,255,.05), 0 0 0 0 rgba(255,255,255,0);
  animation: roadmapPulse 2.8s infinite;
}

.roadmap__step.is-current .roadmap__detail,
.roadmap__step:hover .roadmap__detail,
.roadmap__step:focus-visible .roadmap__detail {
  max-height: 200px;
  opacity: 1;
  transform: translateY(0);
}

@keyframes roadmapPulse {
  0% { box-shadow: 0 0 0 0 rgba(41,129,198,.55); }
  70% { box-shadow: 0 0 0 22px rgba(41,129,198,0); }
  100% { box-shadow: 0 0 0 0 rgba(41,129,198,0); }
}

@media (prefers-reduced-motion: reduce) {
  .roadmap__step,
  .roadmap__detail,
  .roadmap__steps::after { transition: none; animation: none; }
}