:root {
  --bg-0: #08101d;
  --bg-1: #0e1728;
  --panel: rgba(15, 24, 41, 0.96);
  --panel-soft: rgba(12, 20, 34, 0.92);
  --text: #edf4fb;
  --muted: #92a3bb;
  --border: rgba(148, 163, 184, 0.14);
  --border-strong: rgba(20, 184, 166, 0.48);
  --accent: #14b8a6;
  --accent-strong: #0f766e;
  --accent-glow: rgba(20, 184, 166, 0.18);
  --shadow-card: 0 28px 70px rgba(2, 6, 23, 0.48);
  --transition: 180ms ease;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Manrope", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(20, 184, 166, 0.18), transparent 24%),
    radial-gradient(circle at 84% 16%, rgba(59, 130, 246, 0.12), transparent 18%),
    radial-gradient(circle at 50% 120%, rgba(20, 184, 166, 0.08), transparent 30%),
    linear-gradient(180deg, var(--bg-1) 0%, var(--bg-0) 100%);
  line-height: 1.5;
}

button,
textarea {
  font: inherit;
}

.bg-glow {
  position: fixed;
  width: 40vmax;
  height: 40vmax;
  filter: blur(80px);
  opacity: 0.24;
  pointer-events: none;
  z-index: 0;
}

.bg-glow-a {
  top: -16vmax;
  left: -14vmax;
  background: radial-gradient(circle at 30% 30%, rgba(20, 184, 166, 0.36), transparent 34%);
}

.bg-glow-b {
  right: -14vmax;
  bottom: -18vmax;
  background: radial-gradient(circle at 70% 70%, rgba(59, 130, 246, 0.18), transparent 34%);
}

.app-shell {
  position: relative;
  z-index: 1;
  width: min(1240px, calc(100vw - 32px));
  margin: 30px auto 38px;
}

.app-top {
  margin-bottom: 20px;
  max-width: 760px;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.72rem;
  font-weight: 800;
}

.app-top h1 {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(1.8rem, 2.4vw, 2.4rem);
  letter-spacing: -0.03em;
}

.subhead {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 1.02rem;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.hero-tag,
.stat-chip,
.panel-note {
  font-size: 0.88rem;
  color: #b5c5d8;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 12px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.16);
  background: rgba(15, 23, 42, 0.58);
  backdrop-filter: blur(10px);
}

.hero-tag::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(20, 184, 166, 0.14);
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(190px, 0.72fr) minmax(0, 1.12fr);
  gap: 16px;
  align-items: stretch;
}

.panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: linear-gradient(180deg, rgba(15, 24, 41, 0.98), rgba(10, 16, 30, 0.96));
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: var(--shadow-card);
  padding: 22px;
  min-width: 0;
  backdrop-filter: blur(10px);
}

.input-panel {
  background: linear-gradient(180deg, rgba(20, 31, 50, 0.98), rgba(14, 22, 39, 0.96));
}

.output-panel {
  background: linear-gradient(180deg, rgba(13, 20, 36, 0.98), rgba(10, 16, 30, 0.96));
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.result-badge {
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #9fb3c8;
  padding: 3px 8px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.2);
  background: rgba(15, 23, 42, 0.55);
}

.panel label {
  font-size: 0.92rem;
  font-weight: 700;
  color: #e1ebf6;
}

.panel-note {
  margin: 0;
  align-self: center;
  color: #93a7c0;
}

.panel-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.stat-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 11px;
  border-radius: 12px;
  border: 1px solid rgba(148, 163, 184, 0.14);
  background: rgba(10, 16, 30, 0.45);
}

.stat-chip strong {
  color: #eef7ff;
  font-size: 0.95rem;
}

.control-copy {
  display: grid;
  gap: 6px;
  text-align: center;
}

.control-eyebrow {
  margin: 0;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.72rem;
  font-weight: 800;
}

.control-copy h2 {
  margin: 0;
  color: #f3f8ff;
  font-size: 1.02rem;
  line-height: 1.25;
}

.control-copy p {
  margin: 0;
  color: #96abc2;
  font-size: 0.88rem;
}

textarea {
  width: 100%;
  min-height: 340px;
  resize: vertical;
  border-radius: 18px;
  border: 1px solid rgba(148, 163, 184, 0.16);
  background: var(--panel-soft);
  color: var(--text);
  padding: 16px 18px;
  line-height: 1.6;
  font-size: 0.98rem;
  transition: border-color var(--transition), box-shadow var(--transition), filter var(--transition), opacity 0.2s ease;
}

textarea::placeholder {
  color: #64748b;
}

textarea:focus {
  outline: none;
  border-color: var(--border-strong);
  box-shadow: 0 0 0 4px var(--accent-glow);
}

button:focus-visible,
textarea:focus-visible {
  outline: none;
  border-color: rgba(45, 212, 191, 0.72);
  box-shadow: 0 0 0 4px rgba(20, 184, 166, 0.18);
}

button:focus-visible {
  transform: translateY(-1px);
}

.tool-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tool-stack {
  display: grid;
  gap: 10px;
  width: 100%;
}

.action-rail {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 10px;
  min-width: 0;
  position: sticky;
  top: 22px;
  align-self: start;
}

.control-panel {
  position: relative;
  display: grid;
  gap: 14px;
  padding: 18px;
  border-radius: 22px;
  border: 1px solid rgba(148, 163, 184, 0.16);
  background: linear-gradient(180deg, rgba(20, 32, 56, 0.9), rgba(15, 23, 42, 0.86));
  box-shadow: 0 18px 44px rgba(2, 8, 24, 0.56);
}

.control-panel::before {
  content: "";
  position: absolute;
  inset: -18px -12px;
  z-index: -1;
  border-radius: 28px;
  background: radial-gradient(circle at 50% 40%, rgba(20, 184, 166, 0.2), transparent 64%);
}

.primary-btn,
.secondary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  border: 1px solid transparent;
  transition: transform var(--transition), filter var(--transition), border-color var(--transition), background-color var(--transition), box-shadow var(--transition);
  cursor: pointer;
}

.primary-btn {
  background: linear-gradient(180deg, #2dd4bf 0%, #14b8a6 100%);
  color: #05201d;
  font-weight: 800;
  box-shadow: 0 18px 36px rgba(20, 184, 166, 0.18);
}

.primary-btn-large {
  min-height: 66px;
  padding: 18px 22px;
  font-size: 1.05rem;
}

.primary-btn-large:active:enabled {
  animation: clean-pulse 0.22s ease;
}

.primary-btn:hover:enabled,
.secondary-btn:hover:enabled {
  filter: brightness(1.06);
  transform: translateY(-1px);
}

.secondary-btn {
  background: rgba(15, 23, 42, 0.84);
  border-color: rgba(148, 163, 184, 0.18);
  color: #dfe9f5;
  padding: 11px 14px;
}

.secondary-btn:hover:enabled {
  border-color: rgba(20, 184, 166, 0.36);
  box-shadow: 0 0 0 1px rgba(20, 184, 166, 0.1);
}

button:disabled {
  opacity: 0.62;
  cursor: not-allowed;
  transform: none;
}

.output-btn {
  background: rgba(35, 51, 79, 0.7);
  border-color: rgba(126, 157, 193, 0.26);
  color: #e7f2ff;
}

.output-btn:hover:enabled {
  border-color: rgba(20, 184, 166, 0.52);
}

.input-area,
.output-area {
  min-height: 340px;
}

.input-area {
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
}

.output-area {
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
  opacity: 0.86;
}

.output-area.has-content {
  opacity: 1;
}

.output-wrap {
  position: relative;
}

.output-wrap[data-empty="true"]::after {
  content: "Your cleaned text will appear here";
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: #8ca0b7;
  font-weight: 600;
  pointer-events: none;
  text-align: center;
  padding: 16px;
}

@keyframes clean-pulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.03);
  }
  100% {
    transform: scale(1);
  }
}

@media (max-width: 980px) {
  .workspace {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .action-rail {
    max-width: 340px;
    width: 100%;
    margin: 0 auto;
    position: static;
  }

  .tool-stack {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .control-copy {
    text-align: left;
  }

  .panel-head {
    align-items: flex-start;
  }
}

@media (max-width: 640px) {
  .app-shell {
    width: min(100vw - 20px, 760px);
    margin: 16px auto 24px;
  }

  .panel {
    padding: 16px;
    border-radius: 20px;
  }

  textarea,
  .input-area,
  .output-area {
    min-height: 260px;
  }

  .tool-stack {
    grid-template-columns: 1fr;
  }

  .primary-btn-large {
    min-height: 60px;
  }

  .hero-tags {
    gap: 8px;
  }

  .hero-tag {
    width: 100%;
    justify-content: flex-start;
  }

  .panel-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .panel-note {
    margin-top: -4px;
  }
}