:root {
  --bg-top: #f9f4ea;
  --bg-bottom: #dbe6e8;
  --panel: rgba(255, 255, 255, 0.72);
  --panel-stroke: rgba(19, 45, 51, 0.15);
  --ink: #122e35;
  --muted: #4f676d;
  --accent: #d96a2b;
  --accent-dark: #b34e15;
  --shadow: 0 20px 45px rgba(12, 44, 49, 0.14);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Sora", sans-serif;
  color: var(--ink);
  background: linear-gradient(140deg, var(--bg-top) 0%, var(--bg-bottom) 100%);
  overflow-x: hidden;
}

.ambient {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
}

.ambient::before,
.ambient::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  filter: blur(35px);
  opacity: 0.65;
}

.ambient::before {
  width: 460px;
  height: 460px;
  background: radial-gradient(circle at 30% 30%, #ffe0c7, #e1eef0 68%);
  top: -130px;
  right: -120px;
}

.ambient::after {
  width: 380px;
  height: 380px;
  background: radial-gradient(circle at 65% 35%, #c6e5ea, #f7eadb 70%);
  left: -100px;
  bottom: -130px;
}

.layout {
  width: min(1180px, 100% - 2.5rem);
  margin: 2rem auto;
  display: grid;
  grid-template-columns: 1.4fr 0.9fr;
  gap: 1.1rem;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-stroke);
  border-radius: 22px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.controls {
  padding: 1.25rem;
}

.hero {
  margin-bottom: 1.2rem;
}

.eyebrow {
  margin: 0;
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  font-weight: 700;
  color: var(--muted);
}

h1 {
  margin: 0.35rem 0 0.4rem;
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(1.55rem, 3vw, 2.3rem);
  line-height: 1.05;
}

h2 {
  margin: 0 0 0.65rem;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1rem;
}

.hero p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.4;
}

.control-group {
  background: rgba(255, 255, 255, 0.64);
  border: 1px solid rgba(16, 47, 54, 0.12);
  border-radius: 16px;
  padding: 0.9rem;
  margin-bottom: 0.8rem;
}

.control-group:last-child {
  margin-bottom: 0;
}

.grid {
  display: grid;
  gap: 0.65rem;
}

.two-col {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.control-group > h2 {
  grid-column: 1 / -1;
}

label {
  display: block;
  font-size: 0.76rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: 0.32rem;
  color: var(--muted);
}

input,
textarea,
select,
button {
  width: 100%;
  font: inherit;
}

textarea,
input[type="text"],
select {
  border: 1px solid rgba(15, 47, 53, 0.22);
  background: rgba(255, 255, 255, 0.92);
  border-radius: 10px;
  padding: 0.62rem 0.7rem;
  font-size: 0.92rem;
}

textarea {
  resize: vertical;
}

input[type="range"] {
  accent-color: var(--accent);
}

input:disabled,
select:disabled,
textarea:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

input[type="color"] {
  height: 42px;
  border-radius: 10px;
  border: 1px solid rgba(15, 47, 53, 0.22);
  background: rgba(255, 255, 255, 0.95);
  cursor: pointer;
}

input[type="file"] {
  border: 1px dashed rgba(15, 47, 53, 0.35);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.7);
  padding: 0.56rem 0.68rem;
  font-size: 0.86rem;
}

.toggle-wrap {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  column-gap: 0.6rem;
}

.toggle-wrap label {
  margin: 0;
}

.toggle-wrap input[type="checkbox"] {
  width: 18px;
  height: 18px;
}

.button-row {
  display: flex;
  align-items: flex-end;
  gap: 0.55rem;
}

.button-row.stretch {
  grid-column: 1 / -1;
}

button {
  border: 0;
  padding: 0.68rem 0.82rem;
  border-radius: 10px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 140ms ease, box-shadow 140ms ease, filter 140ms ease;
}

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

button:active {
  transform: translateY(0);
}

button.primary {
  background: linear-gradient(145deg, var(--accent) 0%, var(--accent-dark) 100%);
  color: #fff;
  box-shadow: 0 10px 18px rgba(171, 76, 18, 0.25);
}

button.secondary {
  background: rgba(25, 69, 77, 0.09);
  color: var(--ink);
}

.preview-panel {
  display: grid;
  grid-template-rows: auto 1fr auto;
  padding: 1rem;
  min-height: 580px;
}

.preview-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.8rem;
}

.preview-header h2 {
  margin: 0;
  font-size: 1.2rem;
}

#statusText {
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.preview-frame {
  margin-top: 0.85rem;
  border-radius: 18px;
  border: 1px dashed rgba(16, 48, 55, 0.25);
  background:
    linear-gradient(45deg, rgba(255, 255, 255, 0.7) 25%, transparent 25%) 0 0 / 18px 18px,
    linear-gradient(-45deg, rgba(255, 255, 255, 0.7) 25%, transparent 25%) 0 0 / 18px 18px,
    rgba(250, 247, 241, 0.75);
  display: grid;
  place-items: center;
  padding: 1.2rem;
}

#qrMount {
  width: 100%;
  min-height: 360px;
  display: grid;
  place-items: center;
}

#qrMount canvas,
#qrMount svg {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
}

.hint {
  margin: 0.8rem 0 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.site-footer {
  width: min(1180px, 100% - 2.5rem);
  margin: 0 auto 1.5rem;
  text-align: center;
  color: rgba(18, 46, 53, 0.7);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
}

@media (max-width: 1000px) {
  .layout {
    width: min(860px, 100% - 1.2rem);
    grid-template-columns: 1fr;
  }

  .preview-panel {
    min-height: 460px;
  }

  .site-footer {
    width: min(860px, 100% - 1.2rem);
  }
}

@media (max-width: 620px) {
  body {
    background: linear-gradient(170deg, var(--bg-top) 0%, #d2e1e4 100%);
  }

  .layout {
    margin: 0.8rem auto;
    width: calc(100% - 0.7rem);
    gap: 0.7rem;
  }

  .site-footer {
    width: calc(100% - 0.7rem);
    margin: 0 auto 0.9rem;
    text-align: center;
  }

  .controls,
  .preview-panel {
    border-radius: 16px;
    padding: 0.82rem;
  }

  .control-group {
    padding: 0.75rem;
  }

  .two-col {
    grid-template-columns: 1fr;
  }

  .button-row {
    flex-wrap: wrap;
  }

  .button-row button {
    flex: 1 1 120px;
  }
}