:root {
  --bg: #f6f3ec;
  --paper: #fffdf7;
  --ink: #1f2421;
  --muted: #5d645f;
  --line: #d8d0c2;
  --accent: #0f766e;
  --accent-2: #d97706;
  --error: #b91c1c;
  --k-pink-soft: #eda7a8;
  --k-coral: #ea615e;
  --k-green: #43aa8b;
  --k-green-deep: #0d84c0;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: "Segoe UI", "Helvetica Neue", sans-serif;
  position: relative;
  overflow-x: hidden;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: -20vmax;
  pointer-events: none;
  z-index: 0;
  will-change: transform, background-position;
}

body::before {
  background:
    radial-gradient(circle at 16% 78%, color-mix(in oklab, var(--k-green-deep) 82%, white) 0 17%, transparent 42%),
    radial-gradient(circle at 84% 16%, color-mix(in oklab, var(--k-green) 78%, white) 0 15%, transparent 42%),
    radial-gradient(circle at 70% 80%, color-mix(in oklab, var(--k-coral) 90%, white) 0 14%, transparent 42%),
    radial-gradient(circle at 18% 20%, color-mix(in oklab, var(--k-pink-soft) 98%, white) 0 20%, transparent 46%),
    radial-gradient(circle at 52% 50%, color-mix(in oklab, var(--k-green-deep) 64%, white) 0 10%, transparent 30%),
    radial-gradient(circle at 44% 56%, color-mix(in oklab, var(--k-green) 70%, white) 0 11%, transparent 32%),
    radial-gradient(circle at 58% 30%, color-mix(in oklab, var(--k-pink-soft) 96%, white) 0 18%, transparent 40%),
    radial-gradient(circle at 36% 38%, color-mix(in oklab, var(--k-pink-soft) 88%, white) 0 14%, transparent 34%);
  background-size: 154% 154%, 138% 138%, 130% 130%, 132% 132%, 116% 116%, 112% 112%, 126% 126%, 108% 108%;
  background-position: 0% 104%, 122% -16%, 84% 118%, -22% -20%, 52% 48%, 42% 58%, 58% 28%, 34% 40%;
  opacity: 0.74;
  filter: blur(11px) saturate(142%);
  transform: scale(1.12);
  animation: glow-drift 16s ease-in-out infinite alternate;
}

body::after {
  background:
    radial-gradient(circle at 1px 1px, color-mix(in oklab, var(--k-green-deep) 42%, white) 0 1.2px, transparent 1.45px),
    radial-gradient(circle at 3px 2px, color-mix(in oklab, var(--k-coral) 36%, white) 0 1.1px, transparent 1.4px),
    radial-gradient(circle at 2px 4px, color-mix(in oklab, var(--k-pink-soft) 38%, white) 0 1.1px, transparent 1.4px),
    radial-gradient(circle at 4px 1px, color-mix(in oklab, var(--k-green) 34%, white) 0 0.9px, transparent 1.2px);
  background-size: 6px 6px, 8px 8px, 10px 10px, 12px 12px;
  background-position: 0 0, 2px 1px, 1px 3px, 3px 0;
  opacity: 0.16;
  filter: blur(0.15px);
  mix-blend-mode: multiply;
  animation: grain-shift 1.4s steps(2) infinite;
}

body.tab-hidden::before,
body.tab-hidden::after {
  animation-play-state: paused;
}

.shell {
  width: min(860px, calc(100% - 2rem));
  margin: 2rem auto 3rem;
  position: relative;
  z-index: 1;
}

.hero {
  margin-bottom: 1rem;
}

.eyebrow {
  margin: 0 0 .3rem 0;
  color: var(--muted);
  font-size: .9rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  line-height: 1.1;
}

.subtitle {
  margin: .4rem 0 0;
  color: var(--muted);
}

.panel {
  background: color-mix(in oklab, var(--paper) 95%, white);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem;
  box-shadow: 0 8px 30px rgba(20, 20, 20, 0.04);
}

.drop-overlay {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  opacity: 0;
  pointer-events: none;
  z-index: 20;
  transition: opacity 180ms ease;
  background:
    radial-gradient(circle at 20% 20%, color-mix(in oklab, var(--k-pink-soft) 68%, white) 0 18%, transparent 50%),
    radial-gradient(circle at 80% 75%, color-mix(in oklab, var(--k-green-deep) 66%, white) 0 16%, transparent 48%),
    color-mix(in oklab, var(--bg) 72%, white);
  backdrop-filter: blur(6px);
}

body.drag-active .drop-overlay {
  opacity: 1;
}

.drop-overlay__panel {
  width: min(560px, calc(100% - 1.5rem));
  border-radius: 18px;
  padding: 1.2rem;
  border: 2px dashed color-mix(in oklab, var(--k-green-deep) 70%, white);
  background: color-mix(in oklab, white 84%, var(--paper));
  box-shadow:
    0 0 0 6px color-mix(in oklab, var(--k-pink-soft) 24%, transparent),
    0 12px 30px rgba(20, 20, 20, 0.08);
  text-align: center;
}

.drop-overlay__icon {
  width: 68px;
  height: 68px;
  margin: 0 auto .7rem;
  border-radius: 16px;
  display: grid;
  place-items: center;
  font-weight: 800;
  letter-spacing: .08em;
  color: white;
  background: linear-gradient(135deg, var(--k-pink-soft), var(--k-green-deep));
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.12);
}

.drop-overlay__title {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 800;
}

.drop-overlay__subtitle {
  margin: .35rem 0 0;
  color: var(--muted);
}

@keyframes glow-drift {
  0% {
    background-position: -4% 108%, 128% -22%, 88% 124%, -28% -24%, 44% 44%, 38% 60%, 62% 24%, 30% 34%;
    transform: translate3d(-7%, -5%, 0) scale(1.10) rotate(-2deg);
    opacity: 0.56;
  }
  25% {
    background-position: 20% 82%, 104% -10%, 102% 94%, -4% -4%, 64% 36%, 32% 50%, 52% 18%, 42% 30%;
    transform: translate3d(6%, -3%, 0) scale(1.2) rotate(1deg);
    opacity: 0.72;
  }
  50% {
    background-position: 38% 66%, 74% 6%, 110% 78%, 22% 18%, 78% 64%, 50% 42%, 42% 42%, 56% 48%;
    transform: translate3d(11%, 8%, 0) scale(1.24) rotate(2deg);
    opacity: 0.8;
  }
  75% {
    background-position: 22% 94%, 94% 22%, 94% 98%, 8% 26%, 30% 70%, 60% 54%, 66% 40%, 46% 58%;
    transform: translate3d(5%, 7%, 0) scale(1.19) rotate(1deg);
    opacity: 0.72;
  }
  100% {
    background-position: -2% 106%, 124% 16%, 80% 116%, -24% 14%, 28% 58%, 66% 64%, 76% 26%, 26% 52%;
    transform: translate3d(-8%, 6%, 0) scale(1.14) rotate(-2deg);
    opacity: 0.62;
  }
}

@keyframes grain-shift {
  0% {
    transform: translate3d(0, 0, 0);
  }
  50% {
    transform: translate3d(-1px, 0, 0);
  }
  100% {
    transform: translate3d(0, -1px, 0);
  }
}

.form-grid {
  display: grid;
  gap: .85rem;
}

label {
  font-weight: 600;
}

input[type="file"],
input[type="text"] {
  width: 100%;
  padding: .75rem .85rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: white;
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-weight: 500;
}

.checkbox-row input {
  width: 1rem;
  height: 1rem;
}

.btn-primary {
  justify-self: start;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), #14b8a6);
  color: white;
  padding: .8rem 1.1rem;
  font-weight: 700;
  cursor: pointer;
}

.btn-primary:hover {
  filter: brightness(0.97);
}

.status-card {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem;
  background: white;
}

.status-row {
  display: flex;
  align-items: center;
  gap: .75rem;
  justify-content: space-between;
  flex-wrap: wrap;
}

.badge {
  display: inline-block;
  border-radius: 999px;
  padding: .25rem .65rem;
  font-size: .85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .03em;
}

.badge-queued {
  background: #e5e7eb;
  color: #374151;
}

.badge-running {
  background: #d1fae5;
  color: #065f46;
}

.badge-done {
  background: #ccfbf1;
  color: #115e59;
}

.badge-error {
  background: #fee2e2;
  color: #991b1b;
}

.status-message {
  margin: .75rem 0;
  font-size: 1.05rem;
}

.outputs h2 {
  margin: .5rem 0;
  font-size: 1rem;
}

.outputs ul {
  margin: .25rem 0 0;
  padding-left: 1.25rem;
}

.muted {
  color: var(--muted);
  font-size: .9rem;
}

.alert {
  border-radius: 10px;
  padding: .75rem .9rem;
  margin-bottom: .75rem;
}

.alert.error {
  border: 1px solid #fecaca;
  background: #fff1f2;
  color: var(--error);
}

.log-box {
  white-space: pre-wrap;
  word-break: break-word;
  background: #18181b;
  color: #f4f4f5;
  border-radius: 10px;
  padding: .75rem;
  max-height: 320px;
  overflow: auto;
  font-size: .85rem;
}

.link-back {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.link-back:hover {
  text-decoration: underline;
}

@media (max-width: 640px) {
  .shell {
    width: calc(100% - 1rem);
    margin: 1rem auto 2rem;
  }

  .panel {
    padding: .85rem;
  }

  .btn-primary {
    width: 100%;
    justify-self: stretch;
  }
}

@media (prefers-reduced-motion: reduce) {
  body::before,
  body::after {
    animation: none;
  }

}