:root {
  --font-sans: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --color-background-primary: #fffdfa;
  --color-background-secondary: #fff3f7;
  --color-background-tertiary: #ffe8ef;
  --color-border-primary: #d6aab6;
  --color-border-secondary: #e4c4cd;
  --color-border-tertiary: #f0d9e1;
  --color-text-primary: #4d3341;
  --color-text-secondary: #7f5d6b;
  --border-radius-md: 12px;
  --border-radius-lg: 22px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  padding: 20px;
  background:
    radial-gradient(circle at top left, rgba(255, 214, 225, 0.6), transparent 30%),
    radial-gradient(circle at bottom right, rgba(255, 233, 205, 0.55), transparent 28%),
    linear-gradient(180deg, #fff8fb 0%, #fffdf8 100%);
  color: var(--color-text-primary);
}

button,
input,
select {
  font: inherit;
}

#wrap {
  font-family: var(--font-sans);
  border: 1px solid var(--color-border-tertiary);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  background: var(--color-background-primary);
  min-height: min(880px, calc(100vh - 40px));
  display: flex;
  flex-direction: column;
  box-shadow: 0 22px 60px rgba(125, 84, 97, 0.12);
  position: relative;
}

#intro {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2.5rem 2rem;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.85), transparent 22%),
    radial-gradient(circle at 80% 15%, rgba(255, 240, 246, 0.85), transparent 24%),
    linear-gradient(180deg, #fff7fb 0%, #fff1f5 100%);
  min-height: 560px;
}

#petal-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.intro-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  max-width: 560px;
  padding: 2rem 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.65);
  border-radius: 28px;
  background: rgba(255, 252, 253, 0.66);
  backdrop-filter: blur(10px);
  box-shadow: 0 22px 50px rgba(125, 84, 97, 0.08);
}

.intro-flowers {
  font-size: 44px;
  letter-spacing: 6px;
  animation: heartbeat 3s ease-in-out infinite;
}

@keyframes heartbeat {
  0%,
  100% {
    transform: scale(1);
  }
  30% {
    transform: scale(1.08);
  }
  60% {
    transform: scale(1.03);
  }
}

.intro-title {
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 600;
  color: var(--color-text-primary);
  line-height: 1.15;
}

.intro-sub {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.enter-btn {
  margin-top: 0.5rem;
  background: var(--color-background-primary);
  border: 1px solid var(--color-border-secondary);
  border-radius: var(--border-radius-md);
  padding: 11px 28px;
  font-size: 14px;
  cursor: pointer;
  color: var(--color-text-primary);
  display: inline-flex;
  align-items: center;
  gap: 7px;
  transition: background 0.15s, transform 0.1s, box-shadow 0.15s;
  box-shadow: 0 8px 20px rgba(130, 92, 103, 0.08);
}

.enter-btn:hover {
  background: var(--color-background-tertiary);
}

.enter-btn:active,
.cbtn:active,
.tbtn:active {
  transform: scale(0.97);
}

#main {
  display: none;
  flex-direction: column;
  flex: 1;
}

#topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--color-border-tertiary);
  background: linear-gradient(180deg, #fff9fb 0%, #fff5f8 100%);
}

.brand-block {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.back-btn {
  border: 1px solid rgba(214, 170, 182, 0.55);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.9);
  color: var(--color-text-primary);
  cursor: pointer;
  padding: 7px 12px;
  font-size: 12px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 8px 18px rgba(125, 84, 97, 0.08);
  transition: transform 0.1s, background 0.15s, border-color 0.15s;
}


.topbar-title {
  #slide-area .carousel-control-next,
  #slide-area .carousel-control-prev {
    color: var(--color-text-primary);
  }
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-primary);
}

.topbar-sub {
  font-size: 11px;
  color: var(--color-text-secondary);
}

#music-row {
  display: flex;
  align-items: center;
  gap: 6px;
    .carousel-item {
      height: 240px;
    }
  color: var(--color-text-primary);
    width: 3.5rem;
    height: 3.5rem;
    top: 50%;
    transform: translateY(-50%);
    opacity: 1;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(214, 170, 182, 0.8);
    border-radius: 999px;
    box-shadow: 0 14px 30px rgba(125, 84, 97, 0.15);
    margin: 0 0.75rem;
}

#music-row input[type='text']:focus,
#speed:focus {
    background-size: 60% 60%;
    filter: drop-shadow(0 1px 0 rgba(255, 255, 255, 0.7));
  background: var(--color-background-primary);
  border: 1px solid var(--color-border-secondary);
  border-radius: var(--border-radius-md);
  padding: 7px 10px;
  font-size: 12px;
  cursor: pointer;
  color: var(--color-text-primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
    display: none;
  transition: background 0.15s, transform 0.1s, border-color 0.15s;
}

.tbtn:hover,
.cbtn:hover {
  background: var(--color-background-tertiary);
}

#slide-area {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  min-height: 300px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.24), rgba(255, 255, 255, 0)),
    radial-gradient(circle at top, rgba(255, 242, 246, 0.45), transparent 45%);
}

#album-shell {
  width: 100%;
  max-width: 760px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.album-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
}

.album-actions #file-in {
  display: none;
}

#album-shell.dragover .carousel-inner,
#album-shell.dragover .empty-slide {
  border-color: var(--color-border-primary);
  box-shadow: 0 0 0 4px rgba(214, 170, 182, 0.18);
}

#dropzone {
  width: 100%;
  max-width: 540px;
  min-height: 260px;
  border: 1.5px dashed var(--color-border-secondary);
  border-radius: var(--border-radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  cursor: pointer;
  background: linear-gradient(180deg, #fff7fa 0%, #fff1f5 100%);
  text-align: center;
  padding: 2rem;
  transition: background 0.2s, border-color 0.2s, transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 14px 30px rgba(125, 84, 97, 0.08);
}

#dropzone:hover {
  background: var(--color-background-tertiary);
  transform: translateY(-1px);
  box-shadow: 0 16px 34px rgba(125, 84, 97, 0.1);
}

#dropzone.dragover {
  background: #ffe2ec;
  border-color: var(--color-border-primary);
}

.dz-icon,
#dropzone i {
  font-size: 36px;
  color: var(--color-text-secondary);
}

.dz-t {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-primary);
}

.dz-s {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.drop-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.ghost-btn {
  border: 1px solid transparent;
  background: transparent;
  color: var(--color-text-secondary);
  cursor: pointer;
  font-size: 12px;
  text-decoration: underline;
  padding: 2px 0;
  margin-top: 2px;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

#slideshow {
  display: flex;
  width: 100%;
  max-width: 760px;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.carousel-wrap {
  width: 100%;
}

.album-actions,
.caption,
#ctrl,
#add-more,
#thumbs,
.empty-slide {
  display: none;
}

#photoCarousel {
  width: 100%;
}

.carousel-inner {
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border-tertiary);
  background:
    radial-gradient(circle at center, rgba(255, 255, 255, 0.35), transparent 55%),
    var(--color-background-secondary);
  box-shadow: 0 12px 28px rgba(125, 84, 97, 0.1);
}

.carousel-item {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 360px;
  background: var(--color-background-secondary);
}

.carousel-item img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  width: 100%;
  height: 100%;
}

.carousel-indicators {
  margin-bottom: 0.75rem;
}

.carousel-indicators [data-bs-target] {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background-color: rgba(127, 93, 107, 0.45);
}

.carousel-indicators .active {
  background-color: var(--color-border-primary);
}

.carousel-control-prev,
.carousel-control-next {
  width: 14%;
}

.carousel-control-prev-icon,
.carousel-control-next-icon {
  background-color: rgba(255, 255, 255, 0.82);
  border-radius: 999px;
  background-size: 55% 55%;
  padding: 1.2rem;
  box-shadow: 0 10px 24px rgba(125, 84, 97, 0.16);
}

.empty-slide {
  min-height: 360px;
  border: 1px dashed var(--color-border-secondary);
  border-radius: var(--border-radius-lg);
  background: linear-gradient(180deg, #fff7fa 0%, #fff1f5 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  text-align: center;
  padding: 2rem;
  box-shadow: 0 12px 28px rgba(125, 84, 97, 0.08);
}

.empty-icon {
  font-size: 42px;
}

.empty-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-primary);
}

.empty-sub {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.caption {
  font-size: 12px;
  color: var(--color-text-secondary);
}

#ctrl {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.cbtn {
  background: var(--color-background-primary);
  border: 1px solid var(--color-border-secondary);
  border-radius: var(--border-radius-md);
  padding: 8px 14px;
  font-size: 13px;
  cursor: pointer;
  color: var(--color-text-primary);
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: background 0.15s, transform 0.1s, border-color 0.15s;
}

.cbtn:focus-visible,
.tbtn:focus-visible,
.enter-btn:focus-visible,
.back-btn:focus-visible,
.ghost-btn:focus-visible,
#speed:focus-visible,
#music-row input[type='text']:focus-visible {
  outline: 3px solid rgba(214, 170, 182, 0.3);
  outline-offset: 2px;
}

#speed {
  font-size: 12px;
  padding: 7px 10px;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--color-border-secondary);
  background: var(--color-background-primary);
  color: var(--color-text-primary);
  cursor: pointer;
  outline: none;
}

#add-more {
  font-size: 12px;
  color: var(--color-text-secondary);
  background: none;
  border: none;
  cursor: pointer;
  text-decoration: underline;
  padding: 2px 0;
}

#add-more:hover {
  color: var(--color-text-primary);
}

#thumbs {
  display: flex;
  gap: 5px;
  flex-wrap: wrap;
  justify-content: center;
  padding: 0 1rem 1rem;
}

.thumb {
  width: 50px;
  height: 50px;
  border-radius: 6px;
  object-fit: cover;
  cursor: pointer;
  border: 2px solid transparent;
  opacity: 0.65;
  transition: opacity 0.2s, border-color 0.2s, transform 0.2s;
}

.thumb:hover {
  opacity: 1;
  transform: translateY(-1px);
}

.thumb.on {
  border-color: var(--color-border-primary);
  opacity: 1;
}

#footer {
  text-align: center;
  padding: 10px;
  border-top: 1px solid var(--color-border-tertiary);
  background: linear-gradient(180deg, #fff8fa 0%, #fff4f7 100%);
  font-size: 11px;
  color: var(--color-text-secondary);
  letter-spacing: 1px;
}

#file-in,
#mus-in {
  display: none;
}

#slide-area .album-actions,
#slide-area .caption,
#slide-area #ctrl,
#slide-area #thumbs,
#slide-area #add-more,
#slide-area .empty-slide {
  display: none !important;
}

@media (max-width: 640px) {
  body {
    padding: 0;
  }

  #wrap {
    min-height: 100vh;
    border-radius: 0;
    box-shadow: none;
  }

  #topbar,
  #slide-area {
    padding-left: 12px;
    padding-right: 12px;
  }

  #music-row input[type='text'] {
    width: min(100%, 240px);
  }

  .brand-block {
    width: 100%;
  }

  .carousel-item {
    height: 240px;
  }
}