/* ==========================================================================
   オンボーディング - "街を歩く4つの瞬間"
   Emoji中心ビジュアル + ステップ別グラデーション背景
   ========================================================================== */

/* ---------- Keyframes ---------- */

@keyframes onboarding-float {
  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }
  33% {
    transform: translate(12px, -18px) scale(1.05);
  }
  66% {
    transform: translate(-8px, 10px) scale(0.97);
  }
}

@keyframes onboarding-float-reverse {
  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }
  33% {
    transform: translate(-14px, 12px) scale(0.96);
  }
  66% {
    transform: translate(10px, -16px) scale(1.04);
  }
}

@keyframes onboarding-sparkle {
  0%,
  100% {
    opacity: 0;
    transform: scale(0.5) rotate(0deg);
  }
  50% {
    opacity: 0.7;
    transform: scale(1.2) rotate(180deg);
  }
}

@keyframes onboarding-orbit {
  0% {
    transform: rotate(0deg) translateX(60px) rotate(0deg);
  }
  100% {
    transform: rotate(360deg) translateX(60px) rotate(-360deg);
  }
}

@keyframes onboarding-glow-pulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.3;
  }
  50% {
    transform: scale(1.15);
    opacity: 0.5;
  }
}

@keyframes onboarding-emoji-entrance {
  0% {
    opacity: 0;
    transform: scale(0.3) rotate(-15deg);
  }
  60% {
    transform: scale(1.1) rotate(3deg);
  }
  100% {
    opacity: 1;
    transform: scale(1) rotate(0deg);
  }
}

@keyframes onboarding-slide-up {
  0% {
    opacity: 0;
    transform: translateY(24px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes onboarding-progress-shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

@keyframes onboarding-final-glow {
  0%,
  100% {
    box-shadow: 0 0 8px rgba(255, 165, 0, 0.4);
  }
  50% {
    box-shadow: 0 0 20px rgba(255, 165, 0, 0.7);
  }
}

/* ---------- Overlay (base + step gradients) ---------- */

.onboarding-overlay {
  position: fixed;
  inset: 0;
  z-index: 10001;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px;
  padding-bottom: calc(24px + env(safe-area-inset-bottom, 0px));
  overflow: hidden;
  transition: background 0.6s ease;
}

/* Step-specific background gradients (light mode) */
.onboarding-overlay--step-0 {
  background: linear-gradient(145deg, #fff0e6 0%, #f0e6ff 50%, #e8dff5 100%);
}

.onboarding-overlay--step-1 {
  background: linear-gradient(145deg, #e6fff5 0%, #e0f5ff 50%, #d6edff 100%);
}

.onboarding-overlay--step-2 {
  background: linear-gradient(145deg, #ffe8f0 0%, #fff0ea 50%, #ffe6d8 100%);
}

.onboarding-overlay--step-3 {
  background: linear-gradient(145deg, #fff8e0 0%, #ffecb8 50%, #ffe0a0 100%);
}

/* ---------- Floating blobs ---------- */

.onboarding-blob {
  position: absolute;
  border-radius: 50%;
  opacity: 0.3;
  pointer-events: none;
  filter: blur(40px);
}

.onboarding-blob--1 {
  width: 200px;
  height: 200px;
  top: -40px;
  right: -60px;
  background: #ffa500;
  animation: onboarding-float 8s ease-in-out infinite;
}

.onboarding-blob--2 {
  width: 160px;
  height: 160px;
  bottom: 10%;
  left: -50px;
  background: #1e90ff;
  animation: onboarding-float-reverse 10s ease-in-out infinite;
}

.onboarding-blob--3 {
  width: 120px;
  height: 120px;
  top: 40%;
  right: -30px;
  background: #ff6b9d;
  animation: onboarding-float 12s ease-in-out infinite 2s;
}

/* ---------- Sparkles ---------- */

.onboarding-sparkle {
  position: absolute;
  font-size: 16px;
  color: #ffa500;
  pointer-events: none;
  opacity: 0;
}

.onboarding-sparkle--1 {
  top: 12%;
  left: 15%;
  animation: onboarding-sparkle 3s ease-in-out infinite;
}

.onboarding-sparkle--2 {
  top: 25%;
  right: 12%;
  animation: onboarding-sparkle 3s ease-in-out infinite 0.8s;
  font-size: 12px;
}

.onboarding-sparkle--3 {
  bottom: 30%;
  left: 10%;
  animation: onboarding-sparkle 3s ease-in-out infinite 1.6s;
  font-size: 14px;
}

.onboarding-sparkle--4 {
  bottom: 22%;
  right: 18%;
  animation: onboarding-sparkle 3s ease-in-out infinite 2.2s;
}

/* ---------- Skip button ---------- */

.onboarding-skip {
  position: absolute;
  top: calc(16px + env(safe-area-inset-top, 0px));
  right: 16px;
  background: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: 20px;
  color: #666;
  font-size: 13px;
  padding: 6px 14px;
  min-height: 36px;
  cursor: pointer;
  font-family: 'Quicksand', var(--font-body);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
  z-index: 2;
  transition:
    background 0.2s ease,
    color 0.2s ease;
}

.onboarding-skip:hover {
  background: rgba(255, 255, 255, 0.7);
  color: #333;
}

/* ---------- Step card ---------- */

.onboarding-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 360px;
  width: 100%;
  flex: 1;
  justify-content: center;
  z-index: 1;
}

/* ---------- Emoji stage ---------- */

.onboarding-stage {
  position: relative;
  width: 160px;
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}

.onboarding-stage__glow {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 165, 0, 0.25) 0%, transparent 70%);
  animation: onboarding-glow-pulse 3s ease-in-out infinite;
}

.onboarding-stage__emoji {
  font-size: 80px;
  line-height: 1;
  animation: onboarding-emoji-entrance 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) both;
  position: relative;
  z-index: 1;
}

.onboarding-stage__satellite {
  position: absolute;
  font-size: 28px;
  top: 50%;
  left: 50%;
  margin: -14px 0 0 -14px;
}

.onboarding-stage__satellite--0 {
  animation: onboarding-orbit 6s linear infinite;
}

.onboarding-stage__satellite--1 {
  animation: onboarding-orbit 8s linear infinite reverse;
}

.onboarding-stage__satellite--2 {
  animation: onboarding-orbit 10s linear infinite 2s;
}

/* ---------- Glass card ---------- */

.onboarding-glass-card {
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 20px;
  padding: 28px 24px;
  width: 100%;
  max-width: 340px;
  animation: onboarding-slide-up 0.5s ease-out 0.2s both;
}

.onboarding-card__title {
  font-size: 26px;
  font-weight: 800;
  color: #2c3e50 !important;
  margin: 0 0 12px;
  line-height: 1.3;
  font-family: 'Poppins', var(--font-body);
  letter-spacing: -0.02em;
}

.onboarding-card__description {
  font-size: 15px;
  line-height: 1.75;
  color: #555 !important;
  margin: 0;
  font-family: var(--font-body);
  white-space: pre-line;
}

/* ---------- Progress bar + dots ---------- */

.onboarding-progress {
  width: 100%;
  max-width: 340px;
  margin-bottom: 24px;
  z-index: 1;
}

.onboarding-progress__bar {
  width: 100%;
  height: 4px;
  background: rgba(0, 0, 0, 0.08);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 12px;
}

.onboarding-progress__fill {
  height: 100%;
  border-radius: 2px;
  background: linear-gradient(90deg, #ffa500, #ff6b35, #ffa500);
  background-size: 200% 100%;
  animation: onboarding-progress-shimmer 2s linear infinite;
  transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.onboarding-progress__dots {
  display: flex;
  justify-content: center;
  gap: 10px;
}

.onboarding-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.15);
  border: none;
  padding: 0;
  cursor: pointer;
  transition:
    background 0.3s ease,
    transform 0.3s ease;
}

.onboarding-dot--active {
  background: #ffa500;
  transform: scale(1.3);
}

/* ---------- Navigation buttons ---------- */

.onboarding-nav {
  display: flex;
  gap: 12px;
  width: 100%;
  max-width: 340px;
  z-index: 1;
}

.onboarding-btn {
  flex: 1;
  min-height: 52px;
  border-radius: 16px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  border: none;
  font-family: 'Poppins', var(--font-body);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition:
    transform 0.15s ease,
    box-shadow 0.2s ease,
    background 0.2s ease;
}

.onboarding-btn:active {
  transform: scale(0.96);
}

.onboarding-btn--secondary {
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: #555;
  border: 1px solid rgba(255, 255, 255, 0.7);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.onboarding-btn--primary {
  background: linear-gradient(135deg, #ffa500, #ff6b35);
  color: #fff;
  box-shadow: 0 4px 16px rgba(255, 107, 53, 0.35);
}

.onboarding-btn--primary:active {
  box-shadow: 0 2px 8px rgba(255, 107, 53, 0.25);
}

.onboarding-btn--final {
  animation: onboarding-final-glow 2s ease-in-out infinite;
}

/* ---------- Transitions (Alpine.js x-transition classes) ---------- */

.onboarding-transition-enter {
  transition:
    opacity 0.35s ease,
    transform 0.35s ease;
}

.onboarding-transition-enter-start {
  opacity: 0;
  transform: translateX(40px);
}

.onboarding-transition-enter-end {
  opacity: 1;
  transform: translateX(0);
}

.onboarding-transition-leave {
  transition:
    opacity 0.25s ease,
    transform 0.25s ease;
}

.onboarding-transition-leave-start {
  opacity: 1;
  transform: translateX(0);
}

.onboarding-transition-leave-end {
  opacity: 0;
  transform: translateX(-40px);
}

/* ========== Dark mode ========== */

[data-theme='dark'] .onboarding-overlay--step-0 {
  background: linear-gradient(145deg, #2d1c10 0%, #1a1028 50%, #16102a 100%);
}

[data-theme='dark'] .onboarding-overlay--step-1 {
  background: linear-gradient(145deg, #0d2d20 0%, #0d1f2d 50%, #0a182a 100%);
}

[data-theme='dark'] .onboarding-overlay--step-2 {
  background: linear-gradient(145deg, #2d1020 0%, #2d1a12 50%, #24160a 100%);
}

[data-theme='dark'] .onboarding-overlay--step-3 {
  background: linear-gradient(145deg, #2d2408 0%, #2d1e00 50%, #281a00 100%);
}

[data-theme='dark'] .onboarding-blob {
  opacity: 0.15;
}

[data-theme='dark'] .onboarding-sparkle {
  color: #ffcc66;
}

[data-theme='dark'] .onboarding-skip {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.12);
  color: #aaa;
}

[data-theme='dark'] .onboarding-skip:hover {
  background: rgba(255, 255, 255, 0.14);
  color: #ddd;
}

[data-theme='dark'] .onboarding-glass-card {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.1);
}

[data-theme='dark'] .onboarding-card__title {
  color: #f0f0f0 !important;
}

[data-theme='dark'] .onboarding-card__description {
  color: #b0b0b0 !important;
}

[data-theme='dark'] .onboarding-progress__bar {
  background: rgba(255, 255, 255, 0.1);
}

[data-theme='dark'] .onboarding-dot {
  background: rgba(255, 255, 255, 0.2);
}

[data-theme='dark'] .onboarding-dot--active {
  background: #ffa500;
}

[data-theme='dark'] .onboarding-btn--secondary {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.15);
  color: #ccc;
}

[data-theme='dark'] .onboarding-stage__glow {
  background: radial-gradient(circle, rgba(255, 165, 0, 0.15) 0%, transparent 70%);
}

/* ========== Reduced motion ========== */

@media (prefers-reduced-motion: reduce) {
  .onboarding-overlay {
    transition: none;
  }

  .onboarding-blob,
  .onboarding-sparkle {
    animation: none !important;
    opacity: 0.15;
  }

  .onboarding-sparkle {
    display: none;
  }

  .onboarding-stage__glow {
    animation: none;
  }

  .onboarding-stage__emoji {
    animation: none;
  }

  .onboarding-stage__satellite {
    display: none;
  }

  .onboarding-progress__fill {
    animation: none;
    transition: none;
  }

  .onboarding-dot {
    transition: none;
  }

  .onboarding-btn {
    transition: none;
  }

  .onboarding-btn--final {
    animation: none;
  }

  .onboarding-glass-card {
    animation: none;
  }

  .onboarding-transition-enter,
  .onboarding-transition-leave {
    transition: none !important;
  }

  .onboarding-transition-enter-start,
  .onboarding-transition-leave-end {
    opacity: 1;
    transform: none;
  }
}

/* ========== Small screen (max-height: 600px) ========== */

@media (max-height: 600px) {
  .onboarding-stage {
    width: 120px;
    height: 120px;
    margin-bottom: 16px;
  }

  .onboarding-stage__emoji {
    font-size: 56px;
  }

  .onboarding-stage__satellite {
    font-size: 20px;
    margin: -10px 0 0 -10px;
  }

  .onboarding-glass-card {
    padding: 20px 18px;
  }

  .onboarding-card__title {
    font-size: 22px;
  }

  .onboarding-card__description {
    font-size: 14px;
  }

  .onboarding-progress {
    margin-bottom: 16px;
  }

  .onboarding-btn {
    min-height: 46px;
    font-size: 15px;
  }
}