/* =============================================================================
   Welcome Page — Styles & Effects
   ============================================================================= */

/* ── Cloud Buddy Tooltip ──────────────────────────────────────────────────── */

.cloud-buddy-tooltip {
  position: fixed;
  z-index: 1000;
  pointer-events: auto;
  cursor: default;
  font-family: var(--font-family);
  font-size: 13px;
  font-weight: 700;
  color: #1a1a2e;
  text-align: center;
  white-space: nowrap;
  transform: translateX(-50%);
  opacity: 0;
  transition: opacity 0.35s ease;
  background: #FBF157;
  padding: 8px 24px;
  border-radius: 100px;
  letter-spacing: 0.01em;
}

/* ── Cloud Buddy Navbar Glow ──────────────────────────────────────────────── */

.tab-btn--cloud-glow {
  color: #FBF157;
  text-shadow: 0 0 8px #1a1a2e, 0 0 20px #FBF157;
  transition: text-shadow 0.35s ease;
}

/* ── Hero Section ─────────────────────────────────────────────────────────── */

.welcome-page {
  padding: var(--space-xl) var(--space-lg);
  max-width: 960px;
  margin: 0 auto;
  position: relative;
}

.welcome-hero {
  text-align: center;
  padding: var(--space-2xl) var(--space-lg) var(--space-xl);
  position: relative;
}

.welcome-hero::before {
  content: '';
  position: absolute;
  inset: -25%;
  background:
    radial-gradient(ellipse 80% 60% at 50% 30%, rgba(139, 45, 180, 0.18) 0%, transparent 70%),
    radial-gradient(ellipse 60% 50% at 30% 70%, rgba(251, 241, 87, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 80% 60%, rgba(96, 165, 250, 0.08) 0%, transparent 60%);
  pointer-events: none;
  animation: heroAmbientShift 12s ease-in-out infinite alternate;
}

@keyframes heroAmbientShift {
  0%   { opacity: 0.7; transform: scale(1); }
  50%  { opacity: 1;   transform: scale(1.05); }
  100% { opacity: 0.8; transform: scale(0.98); }
}

.welcome-logo-glow {
  display: inline-block;
  position: relative;
  margin-bottom: var(--space-lg);
}

.welcome-logo-glow img {
  width: 96px;
  height: 96px;
  border-radius: var(--radius-lg);
  position: relative;
  z-index: 1;
  filter: drop-shadow(0 0 24px rgba(139, 45, 180, 0.5)) drop-shadow(0 0 48px rgba(251, 241, 87, 0.25));
  animation: logoPulse 4s ease-in-out infinite;
}

@keyframes logoPulse {
  0%, 100% { filter: drop-shadow(0 0 24px rgba(139, 45, 180, 0.5)) drop-shadow(0 0 48px rgba(251, 241, 87, 0.25)); }
  50%      { filter: drop-shadow(0 0 32px rgba(139, 45, 180, 0.7)) drop-shadow(0 0 64px rgba(251, 241, 87, 0.4)); }
}

.welcome-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-primary-light) 50%, var(--color-accent) 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: titleShimmer 6s ease-in-out infinite;
  margin-bottom: var(--space-sm);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

@keyframes titleShimmer {
  0%   { background-position: 0% center; }
  50%  { background-position: 100% center; }
  100% { background-position: 0% center; }
}

.welcome-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.35rem);
  color: var(--color-text-secondary);
  max-width: 650px;
  margin: 0 auto var(--space-lg);
  line-height: 1.6;
}

.welcome-tagline {
  display: inline-block;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  background: rgba(139, 45, 180, 0.12);
  border: 1px solid rgba(139, 45, 180, 0.2);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-pill);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 600;
}

/* ── Feature Cards ────────────────────────────────────────────────────────── */

.welcome-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-lg);
  margin: var(--space-2xl) 0;
}

.welcome-feature-card {
  background: var(--glass-bg);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-lg);
  text-align: center;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.welcome-feature-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(139, 45, 180, 0.08), transparent 70%);
  opacity: 0;
  transition: opacity 0.35s ease;
}

.welcome-feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(139, 45, 180, 0.3);
  box-shadow: var(--glow-primary), 0 12px 40px rgba(0, 0, 0, 0.3);
}

.welcome-feature-card:hover::before {
  opacity: 1;
}

.welcome-feature-icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
  display: block;
  filter: drop-shadow(0 0 8px rgba(251, 241, 87, 0.3));
}

.welcome-feature-card h3 {
  font-size: var(--font-size-lg);
  color: var(--color-text);
  margin-bottom: var(--space-sm);
  font-weight: 600;
}

.welcome-feature-card p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

/* ── Sections ─────────────────────────────────────────────────────────────── */

.welcome-section {
  margin: var(--space-2xl) 0;
  position: relative;
}

.welcome-section-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.welcome-section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, rgba(139, 45, 180, 0.4), transparent);
}

.welcome-body-text {
  color: var(--color-text-secondary);
  line-height: 1.75;
  font-size: var(--font-size-base);
  max-width: 720px;
}

.welcome-body-text p {
  margin-bottom: var(--space-md);
}

/* ── Credits — Hall of Fame ───────────────────────────────────────────────── */

.welcome-credits-intro {
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
  line-height: 1.75;
  margin-bottom: var(--space-xl);
  max-width: 720px;
}

.welcome-credits-stage {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-lg);
  background:
    radial-gradient(ellipse 100% 80% at 50% 100%, rgba(139, 45, 180, 0.12) 0%, transparent 60%),
    var(--glass-bg);
  border: var(--glass-border);
}

/* Animated starfield behind credits */
.welcome-credits-stage::before {
  content: '';
  position: absolute;
  inset: -50%;
  background-image:
    radial-gradient(1.5px 1.5px at 10% 20%, rgba(251, 241, 87, 0.7) 50%, transparent 50%),
    radial-gradient(1px 1px at 25% 60%, rgba(168, 77, 212, 0.6) 50%, transparent 50%),
    radial-gradient(1.5px 1.5px at 40% 15%, rgba(251, 241, 87, 0.5) 50%, transparent 50%),
    radial-gradient(1px 1px at 55% 45%, rgba(96, 165, 250, 0.5) 50%, transparent 50%),
    radial-gradient(2px 2px at 70% 80%, rgba(251, 241, 87, 0.6) 50%, transparent 50%),
    radial-gradient(1px 1px at 80% 30%, rgba(168, 77, 212, 0.5) 50%, transparent 50%),
    radial-gradient(1.5px 1.5px at 90% 70%, rgba(251, 241, 87, 0.4) 50%, transparent 50%),
    radial-gradient(1px 1px at 15% 85%, rgba(96, 165, 250, 0.6) 50%, transparent 50%),
    radial-gradient(2px 2px at 45% 90%, rgba(139, 45, 180, 0.5) 50%, transparent 50%),
    radial-gradient(1px 1px at 65% 10%, rgba(251, 241, 87, 0.5) 50%, transparent 50%),
    radial-gradient(1.5px 1.5px at 35% 40%, rgba(52, 211, 153, 0.4) 50%, transparent 50%),
    radial-gradient(1px 1px at 85% 55%, rgba(251, 241, 87, 0.6) 50%, transparent 50%);
  animation: starDrift 40s linear infinite;
  pointer-events: none;
  opacity: 0.7;
}

@keyframes starDrift {
  0%   { transform: translateY(0); }
  100% { transform: translateY(50%); }
}

.welcome-credits-grid {
  display: grid;
  gap: var(--space-lg);
  position: relative;
  z-index: 1;
}

/* ── Credit Card — Tiered ─────────────────────────────────────────────────── */

.credit-card {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  background: rgba(15, 15, 30, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}

.credit-card, .credit-card * {
  cursor: pointer;
}

.credit-card:hover {
  transform: translateY(-3px) scale(1.01);
  border-color: rgba(139, 45, 180, 0.35);
  box-shadow: 0 0 30px rgba(139, 45, 180, 0.15), 0 12px 40px rgba(0, 0, 0, 0.3);
}

/* Tier: Legendary (core Arduboy ecosystem) */
.credit-card.tier-legendary {
  border-color: rgba(251, 241, 87, 0.2);
  background: linear-gradient(135deg, rgba(251, 241, 87, 0.04) 0%, rgba(139, 45, 180, 0.06) 100%);
}

.credit-card.tier-legendary::after {
  content: '';
  position: absolute;
  inset: -200%;
  background: conic-gradient(from 0deg, rgba(251, 241, 87, 0.15), rgba(218, 185, 50, 0.12), rgba(255, 215, 0, 0.15), rgba(200, 170, 40, 0.10), rgba(251, 241, 87, 0.15));
  z-index: -1;
  animation: borderRotate 6s linear infinite;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.credit-card.tier-legendary:hover::after {
  opacity: 1;
}

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

.credit-card.tier-legendary .credit-badge {
  background: linear-gradient(135deg, var(--color-accent), #ffd700);
  color: #1a1a2e;
  font-weight: 700;
  box-shadow: 0 0 20px rgba(251, 241, 87, 0.4);
  animation: badgePulse 3s ease-in-out infinite;
}

@keyframes badgePulse {
  0%, 100% { box-shadow: 0 0 20px rgba(251, 241, 87, 0.3); }
  50%      { box-shadow: 0 0 30px rgba(251, 241, 87, 0.6), 0 0 60px rgba(251, 241, 87, 0.2); }
}

/* Tier: Epic */
.credit-card.tier-epic {
  border-color: rgba(168, 77, 212, 0.2);
}

.credit-card.tier-epic .credit-badge {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: white;
  font-weight: 600;
}

/* Tier: Rare */
.credit-card.tier-rare {
  border-color: rgba(96, 165, 250, 0.15);
}

.credit-card.tier-rare .credit-badge {
  background: linear-gradient(135deg, #3b82f6, #60a5fa);
  color: white;
  font-weight: 600;
}

.credit-badge {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  transition: transform 0.3s ease;
}

.credit-card:hover .credit-badge {
  transform: scale(1.1) rotate(-5deg);
}

.credit-info {
  flex: 1;
  min-width: 0;
}

.credit-name {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 2px;
}

.credit-name a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

.credit-name a:hover {
  color: var(--color-accent);
}

.credit-author {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-xs);
}

.credit-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.credit-tier-label {
  flex-shrink: 0;
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
}

.tier-legendary .credit-tier-label {
  color: var(--color-accent);
  background: rgba(251, 241, 87, 0.08);
  text-shadow: 0 0 10px rgba(251, 241, 87, 0.3);
}

.tier-epic .credit-tier-label {
  color: var(--color-primary-light);
  background: rgba(168, 77, 212, 0.1);
}

.tier-rare .credit-tier-label {
  color: var(--color-info);
  background: rgba(96, 165, 250, 0.08);
}

/* ── Celebration Particles (canvas overlay inside credits stage) ──────────── */

.welcome-credits-particles {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* ── Licenses Section ─────────────────────────────────────────────────────── */

.welcome-licenses {
  display: grid;
  gap: var(--space-md);
}

.license-entry {
  background: var(--glass-bg);
  border: var(--glass-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.license-entry:hover {
  border-color: rgba(255, 255, 255, 0.12);
}

.license-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  cursor: pointer;
  user-select: none;
  gap: var(--space-md);
}

.license-header:hover {
  background: rgba(255, 255, 255, 0.02);
}

.license-project-name {
  font-weight: 600;
  color: var(--color-text);
  font-size: var(--font-size-base);
}

.license-type {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  flex-shrink: 0;
}

.license-toggle {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.license-entry.open .license-toggle {
  transform: rotate(180deg);
}

.license-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.license-entry.open .license-body {
  max-height: 600px;
}

.license-text {
  padding: 0 var(--space-lg) var(--space-lg);
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}

/* ── Footer ───────────────────────────────────────────────────────────────── */

.welcome-footer {
  text-align: center;
  padding: var(--space-2xl) 0 var(--space-lg);
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  border-top: 1px solid var(--color-border-subtle);
  margin-top: var(--space-2xl);
}

.welcome-footer-heart {
  color: var(--color-danger);
  display: inline-block;
  animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {
  0%, 100% { transform: scale(1); }
  14%      { transform: scale(1.2); }
  28%      { transform: scale(1); }
  42%      { transform: scale(1.15); }
  56%      { transform: scale(1); }
}

.welcome-footer a {
  color: var(--color-primary-light);
  text-decoration: none;
  transition: color 0.2s ease;
}

.welcome-footer a:hover {
  color: var(--color-accent);
}

/* ── Scroll-reveal animations ─────────────────────────────────────────────── */

.welcome-reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.welcome-reveal.delay-1 { transition-delay: 0.1s; }
.welcome-reveal.delay-2 { transition-delay: 0.2s; }
.welcome-reveal.delay-3 { transition-delay: 0.3s; }
.welcome-reveal.delay-4 { transition-delay: 0.4s; }

/* ── Brand link in navbar ─────────────────────────────────────────────────── */

.navbar-brand.brand-clickable {
  cursor: pointer;
  transition: opacity 0.2s ease;
  user-select: none;
}

.navbar-brand.brand-clickable:hover {
  opacity: 0.85;
}

.navbar-brand.brand-clickable.active .brand-text {
  text-shadow: 0 0 12px rgba(251, 241, 87, 0.4);
}

/* ── Responsive ───────────────────────────────────────────────────────────── */

@media (max-width: 640px) {
  .welcome-page {
    padding: var(--space-lg) var(--space-md);
  }

  .credit-card {
    flex-direction: column;
    text-align: center;
  }

  .credit-tier-label {
    align-self: center;
  }
}