:root {
  --bg: #eff4ff;
  --card-bg: #ffffff;
  --ink: #353942;
  --muted: #6d7280;
  --line: #d8deea;
  --field-bg: #f3f5f9;
  --primary: #3f8ef2;
  --primary-press: #2f74cd;
  --preview-bg: #0c2445;
  --form-scale: 0.62;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Geist", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(1000px 360px at 10% 0%, #d9e9ff 0%, transparent 55%),
    radial-gradient(900px 320px at 100% 100%, #d2e3ff 0%, transparent 60%),
    var(--bg);
}

.app-shell {
  max-width: 1480px;
  margin: 0 auto;
  padding: 28px;
  display: grid;
  grid-template-columns: minmax(620px, 1.2fr) minmax(380px, 0.8fr);
  gap: 24px;
  align-items: start;
}

.modal-card {
  background: var(--card-bg);
  border-radius: 22px;
  border: 1px solid #e7ebf3;
  box-shadow: 0 30px 80px rgba(45, 87, 141, 0.14);
  padding: 20px 20px 24px;
}

.modal-header h1 {
  margin: 0 0 16px;
  font-size: 34px;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px 14px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.field span {
  font-size: calc(20px * var(--form-scale));
  font-weight: 500;
  color: #4b515f;
}

.field input,
.field textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--field-bg);
  color: #292e37;
  border-radius: 10px;
  padding: calc(13px * var(--form-scale)) calc(14px * var(--form-scale));
  font-size: calc(18px * var(--form-scale));
  outline: none;
  transition: border-color 140ms ease, box-shadow 140ms ease;
}

.field input:focus,
.field textarea:focus {
  border-color: #9abef2;
  box-shadow: 0 0 0 4px rgba(63, 142, 242, 0.15);
}

.field textarea {
  min-height: calc(110px * var(--form-scale));
  resize: vertical;
}

.field input[aria-invalid="true"],
.field textarea[aria-invalid="true"] {
  border-color: #dd5a5a;
  background: #fff4f4;
  box-shadow: 0 0 0 3px rgba(220, 68, 68, 0.14);
}

.span-1 {
  grid-column: span 1;
}

.span-2 {
  grid-column: span 2;
}

.span-3 {
  grid-column: span 3;
}

.span-4 {
  grid-column: span 4;
}

.form-actions {
  margin-top: 14px;
  display: flex;
  gap: 10px;
}

.flow-panel {
  margin-top: 12px;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid #e1e7f3;
  background: #f7faff;
}

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

.flow-top p {
  margin: 0;
  font-size: 13px;
  font-weight: 600;
  color: #4f5a76;
}

.flow-track {
  margin-top: 10px;
  width: 100%;
  height: 8px;
  border-radius: 999px;
  background: #e4ecfb;
  overflow: hidden;
}

.flow-bar {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #3f8ef2, #5ca3ff);
  transition: width 220ms ease, background 220ms ease;
}

.flow-bar.is-complete {
  background: linear-gradient(90deg, #2eaf66, #41c67a);
}

.flow-helper {
  margin: 9px 0 0;
  font-size: 13px;
  color: #5f6e8e;
}

.btn {
  border: 0;
  border-radius: 10px;
  font-family: inherit;
  font-size: calc(30px * var(--form-scale));
  font-weight: 700;
  letter-spacing: -0.01em;
  cursor: pointer;
  height: calc(78px * var(--form-scale));
  transition: transform 110ms ease, background 140ms ease, color 140ms ease;
  width: 100%;
}

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

.btn:disabled:hover {
  transform: none;
}

.btn:active {
  transform: translateY(0);
}

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

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-primary:not(:disabled):hover {
  background: var(--primary-press);
}

.status-message {
  min-height: 28px;
  margin: 14px 4px 0;
  font-size: 14px;
  font-weight: 500;
}

.status-message.info {
  color: #4f607f;
}

.status-message.success {
  color: #267843;
}

.status-message.error {
  color: #c53030;
}

.preview-section {
  background:
    linear-gradient(162deg, rgba(42, 98, 172, 0.7), rgba(17, 47, 92, 0.75)),
    var(--preview-bg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 22px;
  box-shadow: 0 28px 70px rgba(10, 34, 69, 0.35);
  padding: 20px;
  color: #ffffff;
  position: sticky;
  top: 22px;
}

.preview-header h2 {
  margin: 0;
  font-size: 34px;
  letter-spacing: -0.01em;
}

.preview-header p {
  margin: 4px 0 16px;
  color: #d6e5ff;
  font-size: 18px;
}

.poster-frame {
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.24);
}

#posterCanvas {
  width: 100%;
  max-width: 460px;
  display: block;
  aspect-ratio: 4 / 5;
  margin: 0 auto;
  background: #3894e8;
}

.btn-download {
  margin-top: 16px;
  width: 100%;
  background: #f4f7ff;
  color: #0f3272;
  font-size: 16px;
  height: 46px;
}

.btn-download:not(:disabled):hover {
  background: #e6edff;
}

.btn-download:disabled {
  background: #d8e1f3;
  color: #6e7fa1;
  cursor: not-allowed;
  opacity: 0.8;
}

.download-gate {
  margin-top: 14px;
  padding: 11px 12px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.1);
}

.download-gate strong {
  display: block;
  font-size: 13px;
  letter-spacing: 0.01em;
}

.download-gate p {
  margin: 4px 0 0;
  color: #d8e7ff;
  font-size: 13px;
}

.download-gate[data-state="ready"] {
  border-color: rgba(94, 227, 145, 0.75);
  background: rgba(56, 158, 107, 0.2);
}

.download-gate[data-state="ready"] p {
  color: #e7fff2;
}

.download-gate[data-state="blocked"] {
  border-color: rgba(255, 194, 128, 0.65);
  background: rgba(255, 155, 81, 0.16);
}

@media (max-width: 1240px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .preview-section {
    position: static;
  }
}

@media (max-width: 900px) {
  .app-shell {
    padding: 16px;
  }

  .modal-header h1 {
    font-size: 30px;
  }

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

  .span-1,
  .span-2,
  .span-3,
  .span-4 {
    grid-column: span 2;
  }

  .btn {
    font-size: 16px;
    height: 44px;
  }
}