:root {
  --ink: #14201c;
  --muted: #5a6b64;
  --line: rgba(20, 32, 28, 0.12);
  --panel: rgba(255, 252, 247, 0.86);
  --accent: #0f7a5f;
  --accent-ink: #063528;
  --danger: #a33b2b;
  --ok: #1b6b45;
  --shadow: 0 18px 50px rgba(20, 32, 28, 0.1);
  --radius: 18px;
  --font: "DM Sans", "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
}

* {
  box-sizing: border-box;
}

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

body {
  font-family: var(--font);
  color: var(--ink);
  background: #e7efe9;
  line-height: 1.5;
}

.bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(900px 500px at 10% -10%, #c8e6d8 0%, transparent 55%),
    radial-gradient(700px 420px at 100% 0%, #f3e0c7 0%, transparent 50%),
    linear-gradient(160deg, #eef5f0 0%, #e4ebe4 45%, #dfe8e2 100%);
}

.shell {
  width: min(760px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2.5rem 0 3.5rem;
}

.head {
  margin-bottom: 1.75rem;
}

.brand {
  margin: 0 0 0.55rem;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

.head h1 {
  margin: 0;
  font-size: clamp(1.55rem, 3.5vw, 2.1rem);
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.sub {
  margin: 0.65rem 0 0;
  color: var(--muted);
  max-width: 38rem;
}

.panel {
  background: var(--panel);
  backdrop-filter: blur(10px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.25rem 1.3rem 1.4rem;
  margin-bottom: 1rem;
}

.panel h2 {
  margin: 0 0 1rem;
  font-size: 1rem;
  font-weight: 700;
}

.drop {
  display: grid;
  gap: 0.35rem;
  place-items: center;
  text-align: center;
  padding: 1.6rem 1rem;
  border: 1.5px dashed rgba(15, 122, 95, 0.45);
  border-radius: 14px;
  background: rgba(15, 122, 95, 0.04);
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.drop:hover,
.drop.dragover {
  background: rgba(15, 122, 95, 0.09);
  border-color: var(--accent);
}

.drop-title {
  font-weight: 700;
}

.drop-hint,
.drop-name,
.meta,
.status,
.foot,
.range-label {
  color: var(--muted);
  font-size: 0.92rem;
}

.drop-name {
  font-family: var(--mono);
  color: var(--accent-ink);
  word-break: break-all;
}

.preview {
  width: 100%;
  margin-top: 1rem;
  border-radius: 12px;
  background: #0b1511;
  max-height: 360px;
}

.meta {
  margin: 0.65rem 0 0;
  font-family: var(--mono);
  font-size: 0.82rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
}

.field {
  display: grid;
  gap: 0.35rem;
  font-size: 0.88rem;
  color: var(--muted);
}

.field input,
.field select,
.range-row input[type="range"] {
  width: 100%;
}

.field input,
.field select {
  appearance: none;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.65rem 0.75rem;
  font: inherit;
  color: var(--ink);
  background: #fff;
}

.range-row {
  margin-top: 1rem;
}

.range-label {
  margin: 0.4rem 0 0;
  font-family: var(--mono);
  font-size: 0.82rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.field input[type="color"] {
  padding: 0.25rem;
  height: 2.6rem;
  cursor: pointer;
}

.text-grid {
  margin-top: 0.8rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0.72rem 1.2rem;
  font: inherit;
  font-weight: 700;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, opacity 0.15s ease;
}

.btn:hover:not(:disabled) {
  transform: translateY(-1px);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn.primary {
  background: var(--accent);
  color: #f7fffb;
}

.btn.primary:hover:not(:disabled) {
  background: #0c6a52;
}

.btn.ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}

.status {
  min-height: 1.4em;
  margin: 0.9rem 0 0;
}

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

.status.ok {
  color: var(--ok);
}

.result {
  margin-top: 1rem;
  padding: 0.75rem;
  border-radius: 12px;
  background: repeating-conic-gradient(#e9eee9 0% 25%, #f7f8f6 0% 50%) 0 0 / 16px 16px;
  border: 1px solid var(--line);
}

.result img {
  display: block;
  max-width: 100%;
  margin: 0 auto;
}

.foot {
  margin-top: 1.25rem;
  font-family: var(--mono);
  font-size: 0.8rem;
}

@media (max-width: 560px) {
  .grid {
    grid-template-columns: 1fr;
  }

  .shell {
    width: min(760px, calc(100% - 1.25rem));
    padding-top: 1.5rem;
  }
}