:root {
  --haze-a: #f4ece2;
  --haze-b: #e9e6f2;
  --haze-c: #f8e7de;
  --glow-warm: rgba(240, 190, 165, 0.55);
  --glow-cool: rgba(178, 172, 216, 0.45);
  --glow-pale: rgba(255, 245, 230, 0.7);
  --vignette: rgba(120, 100, 95, 0.18);

  --card: rgba(255, 252, 247, 0.74);
  --frame: #e7d7c8;
  --frame-soft: rgba(231, 215, 200, 0.6);
  --highlight: rgba(255, 255, 255, 0.75);

  --text: #5a4c43;
  --muted: #9c8d82;
  --accent: #cf8b78;
  --accent-glow: rgba(207, 139, 120, 0.28);
  --accent-ink: #fffaf6;
  --danger: #c4675e;
  --danger-glow: rgba(196, 103, 94, 0.24);

  --grain: 0.28;
  --lift: 0 18px 40px -24px rgba(120, 95, 85, 0.45);
  --float: 0 26px 60px -30px rgba(120, 95, 85, 0.55);
}

@media (prefers-color-scheme: dark) {
  :root {
    --haze-a: #15121d;
    --haze-b: #1a1726;
    --haze-c: #191520;
    --glow-warm: rgba(216, 150, 118, 0.28);
    --glow-cool: rgba(116, 124, 196, 0.26);
    --glow-pale: rgba(214, 198, 232, 0.12);
    --vignette: rgba(0, 0, 0, 0.55);

    --card: rgba(37, 32, 50, 0.72);
    --frame: #3b3350;
    --frame-soft: rgba(59, 51, 80, 0.7);
    --highlight: rgba(255, 255, 255, 0.06);

    --text: #eee7f2;
    --muted: #a096b2;
    --accent: #e3a48f;
    --accent-glow: rgba(227, 164, 143, 0.26);
    --accent-ink: #2a1f22;
    --danger: #ec8a80;
    --danger-glow: rgba(236, 138, 128, 0.22);

    --grain: 0.2;
    --lift: 0 18px 40px -24px rgba(0, 0, 0, 0.75);
    --float: 0 26px 60px -30px rgba(0, 0, 0, 0.85);
  }
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  min-height: 100%;
}

body {
  position: relative;
  min-height: 100vh;
  margin: 0;
  padding: 72px 20px 120px;
  background: linear-gradient(165deg, var(--haze-a) 0%, var(--haze-b) 48%, var(--haze-c) 100%);
  background-attachment: fixed;
  color: var(--text);
  font: 15px/1.65 "Quicksand", ui-rounded, "SF Pro Rounded", "Segoe UI", system-ui, sans-serif;
  font-weight: 500;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: -25%;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(38% 32% at 18% 20%, var(--glow-warm) 0%, transparent 70%),
    radial-gradient(42% 36% at 82% 28%, var(--glow-cool) 0%, transparent 72%),
    radial-gradient(46% 40% at 50% 88%, var(--glow-pale) 0%, transparent 70%),
    radial-gradient(90% 80% at 50% 50%, transparent 52%, var(--vignette) 100%);
  filter: blur(58px);
  animation: drift 52s ease-in-out infinite alternate;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 100;
  pointer-events: none;
  opacity: var(--grain);
  mix-blend-mode: soft-light;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

@keyframes drift {
  0% {
    transform: translate3d(0, 0, 0) scale(1);
  }
  50% {
    transform: translate3d(-2.5%, 2%, 0) scale(1.08);
  }
  100% {
    transform: translate3d(2%, -1.5%, 0) scale(1.03);
  }
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

::selection {
  background: var(--accent-glow);
  color: var(--text);
}

:focus-visible {
  outline: none;
  box-shadow: 0 0 0 4px var(--accent-glow);
}

main {
  position: relative;
  z-index: 1;
  max-width: 660px;
  margin: 0 auto;
  animation: rise 0.9s ease backwards;
}

header {
  margin-bottom: 34px;
  text-align: center;
}

h1 {
  margin: 0 0 8px;
  font-size: 30px;
  font-weight: 600;
  letter-spacing: 0.005em;
  text-shadow: 0 1px 0 var(--highlight);
}

.panel {
  border: 2px solid var(--frame);
  border-radius: 24px;
  background: var(--card);
  backdrop-filter: blur(14px) saturate(1.1);
  -webkit-backdrop-filter: blur(14px) saturate(1.1);
  box-shadow: inset 0 1px 0 var(--highlight), var(--lift);
}

#drop {
  display: grid;
  place-items: center;
  gap: 7px;
  padding: 46px 24px;
  border: 2.5px dashed var(--frame);
  border-radius: 28px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.35s ease, transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1),
    box-shadow 0.35s ease;
}

#drop:hover,
#drop:focus-visible {
  border-color: var(--accent);
  outline: none;
  transform: translateY(-2px);
  box-shadow: inset 0 1px 0 var(--highlight), 0 0 0 6px var(--accent-glow), var(--float);
}

#drop.dragging {
  border-color: var(--accent);
  border-style: solid;
  transform: translateY(-3px) scale(1.012);
  box-shadow: inset 0 1px 0 var(--highlight), 0 0 0 10px var(--accent-glow), var(--float);
}

#drop strong {
  font-size: 16px;
  font-weight: 600;
}

#drop span {
  color: var(--muted);
  font-size: 13px;
}

.composer {
  margin-top: 18px;
  padding: 16px;
  transition: border-color 0.35s ease, box-shadow 0.35s ease;
}

.composer:focus-within {
  border-color: var(--accent);
  box-shadow: inset 0 1px 0 var(--highlight), 0 0 0 6px var(--accent-glow), var(--float);
}

textarea {
  width: 100%;
  min-height: 96px;
  padding: 4px 6px;
  border: 0;
  outline: none;
  resize: vertical;
  background: transparent;
  color: inherit;
  font: inherit;
  line-height: 1.75;
}

textarea::placeholder {
  color: var(--muted);
  opacity: 0.85;
}

.composer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 10px;
  padding: 12px 4px 0;
  border-top: 1.5px dashed var(--frame-soft);
}

.hint {
  color: var(--muted);
  font-size: 12px;
}

button {
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  border-radius: 999px;
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.25s ease,
    opacity 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.primary {
  padding: 9px 20px;
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: 0 6px 16px -8px var(--accent), inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.primary:not(:disabled):hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 22px -8px var(--accent), inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.primary:not(:disabled):active {
  transform: translateY(0);
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 36px;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 11px;
  max-width: calc(100vw - 40px);
  padding: 13px 22px 13px 18px;
  border: 2px solid var(--frame);
  border-radius: 999px;
  background: var(--card);
  backdrop-filter: blur(16px) saturate(1.1);
  -webkit-backdrop-filter: blur(16px) saturate(1.1);
  box-shadow: inset 0 1px 0 var(--highlight), var(--float);
  color: var(--text);
  font-size: 13.5px;
  font-weight: 600;
  opacity: 0;
  transform: translate(-50%, 24px) scale(0.96);
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.45s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0) scale(1);
}

.toast.error {
  border-color: var(--danger);
  color: var(--danger);
}

.toast-mark {
  display: grid;
  flex: none;
  place-items: center;
  width: 14px;
  height: 14px;
  color: var(--accent);
}

.toast-mark .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-glow);
}

.toast.loading .dot {
  animation: pulse 1.2s ease-in-out infinite;
}

.toast.error .dot {
  background: var(--danger);
  box-shadow: 0 0 0 4px var(--danger-glow);
}

.toast-mark .tick {
  display: none;
}

.toast.done .dot {
  display: none;
}

.toast.done .tick {
  display: block;
}

.toast.done .tick path {
  animation: draw 0.45s ease 0.08s backwards;
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(0.55);
    opacity: 0.45;
  }
}

@keyframes draw {
  from {
    stroke-dasharray: 17;
    stroke-dashoffset: 17;
  }
  to {
    stroke-dasharray: 17;
    stroke-dashoffset: 0;
  }
}

@media (max-width: 560px) {
  body {
    padding-top: 48px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  body::before {
    animation: none !important;
    transition-duration: 0.01ms !important;
  }
}