:root{
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --bg: #0b0b0f;
  --fg: #f5f5f7;
  --muted: rgba(245,245,247,0.75);
  --glass: rgba(0,0,0,0.25);
  --glass-2: rgba(255,255,255,0.08);
  --like: #ff2d55;
}

*{ box-sizing: border-box; }
html, body { height: 100%; }
body{
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  overflow: hidden;
}

#app{ height: 100%; }

.topbar{
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  padding-top: calc(10px + var(--safe-top));
  padding-bottom: 10px;
  display: flex;
  justify-content: center;
  pointer-events: none;
  z-index: 10;
}

.top5-btn{
  pointer-events: auto;
  border: 1px solid var(--glass-2);
  background: transparent;
  color: var(--fg);
  font-weight: 700;
  letter-spacing: 0.2px;
  padding: 10px 14px;
  border-radius: 999px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  font-size: 32px;
}

.feed{
  height: 100vh;
  overflow-y: auto;
  scroll-snap-type: y mandatory;
  -webkit-overflow-scrolling: touch;
}

.slide{
  height: 100vh;
  scroll-snap-align: start;
  scroll-snap-stop: always;
  display: grid;
  grid-template-rows: 1fr;
  padding: 18px 16px calc(18px + var(--safe-bottom));
}

.slide-inner{
  position: relative;
  border-radius: 22px;
  padding: 22px 18px;
  border: 1px solid var(--glass-2);
  background: rgba(255,255,255,0.04);
  display: grid;
  align-content: center;
  min-height: 100%;
}

.reprise-text{
  font-size: 18px;
  line-height: 1.35;
  white-space: pre-wrap;
  word-break: break-word;
}

.like-panel{
  position: absolute;
  left: 50%;
  bottom: calc(18px + var(--safe-bottom));
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0;
  border-radius: 0;
  background: transparent;
  border: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.like-btn{
  display: grid;
  place-items: center;
  width: 200px;
  height: 200px;
  border-radius: 999px;
  border: none;
  background: transparent;
  color: var(--like);
  cursor: pointer;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
  -webkit-appearance: none;
  appearance: none;
  outline: none;
  box-shadow: none;
  user-select: none;
  touch-action: manipulation;
  background-color: transparent;
}


.like-btn:active{ background: transparent; }
.like-btn:focus{ outline: none; }
.like-btn:focus-visible{ outline: none; }
.like-btn::-moz-focus-inner{ border: 0; }
.like-btn.is-animating .heart{
  animation: heart-pop 320ms ease-out;
}

.like-btn.is-unliking .heart{
  animation: heart-unlike 220ms ease-out;
}

@keyframes heart-pop{
  0%{ transform: scale(1); }
  40%{ transform: scale(1.35); }
  100%{ transform: scale(1); }
}

@keyframes heart-unlike{
  0%{ transform: scale(1); opacity: 1; }
  50%{ transform: scale(0.72); opacity: 0.35; }
  100%{ transform: scale(1); opacity: 1; }
}


.float-heart{
  color: var(--like);
  filter: drop-shadow(0 8px 18px rgba(255,45,85,0.25));
  position: absolute;
  right: 72px;
  bottom: 140px;
  width: 90px;
  height: 90px;
  pointer-events: none;
  opacity: 0;
  transform: translateY(0) scale(0.9);
  animation: float-up 720ms ease-out forwards;
}

@keyframes float-up{
  0%{ opacity: 0; transform: translateY(0) scale(0.9); }
  15%{ opacity: 1; }
  100%{ opacity: 0; transform: translateY(-170px) scale(1.35); }
}

.heart{
  width: 110px;
  height: 110px;
  display: block;
}

.like-count{
  font-weight: 700;
  font-size: 22px;
  color: var(--fg);
}


/* Overlay */
.overlay{
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  display: grid;
  place-items: center;
  padding: 16px;
  z-index: 20;
}
.hidden{ display: none; }

.overlay-card{
  width: min(680px, 100%);
  max-height: calc(100vh - 32px);
  overflow: auto;
  border-radius: 22px;
  border: 1px solid var(--glass-2);
  background: rgba(10,10,14,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.overlay-header{
  position: sticky;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 14px 14px;
  border-bottom: 1px solid var(--glass-2);
  background: rgba(10,10,14,0.92);
}

.overlay-title{
  font-weight: 800;
  font-size: 18px;
}

.icon-btn{
  border: 1px solid var(--glass-2);
  background: transparent;
  color: var(--fg);
  border-radius: 12px;
  padding: 8px 10px;
  cursor: pointer;
}

.top5-list{
  padding: 14px;
  display: grid;
  gap: 12px;
}

.top5-item{
  border: 1px solid var(--glass-2);
  background: rgba(255,255,255,0.04);
  border-radius: 18px;
  padding: 14px 14px;
}

.place-badge{
  display: inline-block;
  font-weight: 800;
  font-size: 13px;
  color: var(--fg);
  border: 1px solid var(--glass-2);
  background: rgba(0,0,0,0.25);
  padding: 6px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
}
.top5-text{
  white-space: pre-wrap;
  line-height: 1.35;
}

.top5-meta{
  margin-top: 10px;
  font-weight: 700;
  opacity: 0.9;
}
.top5-meta{
  margin-top: 10px;
  color: var(--muted);
  font-weight: 700;
  font-size: 13px;
}


/* Big heart on double tap */
.big-heart{
  color: var(--like);
  position: absolute;
  transform: translate(-50%, -50%);
  pointer-events: none;
  opacity: 0;
  animation: big-heart-pop 600ms ease-out forwards;
  filter: drop-shadow(0 8px 24px rgba(0,0,0,0.35));
}

.big-heart .heart{
  width: 180px;
  height: 180px;
}

@keyframes big-heart-pop{
  0%{ opacity: 0; transform: translate(-50%, -50%) scale(0.4); }
  20%{ opacity: 1; transform: translate(-50%, -50%) scale(1.05); }
  100%{ opacity: 0; transform: translate(-50%, -90%) scale(1.25); }
}