* {
  box-sizing: border-box;
}

:root {
  --page-bg: #f3ebff;
  --card-bg: #ffffff;
  --primary: #7c3aed;
  --primary-dark: #5b21b6;
  --secondary: #a78bfa;
  --text: #1f1f29;
  --muted: #6b6475;
  --soft: #f8f7fb;
  --border: #e6ddf7;
  --success: #16a34a;
  --warning: #f59e0b;
  --error: #dc2626;
  --shadow: 0 20px 50px rgba(74, 35, 140, 0.12);
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(124, 58, 237, 0.18), transparent 34%),
    radial-gradient(circle at top right, rgba(167, 139, 250, 0.22), transparent 30%),
    var(--page-bg);
  color: var(--text);
}

.page-shell {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 32px;
}

.page-header {
  background: linear-gradient(135deg, #ffffff 0%, #f8f4ff 100%);
  border: 1px solid var(--border);
  border-radius: 28px;
  padding: 34px;
  margin-bottom: 24px;
  box-shadow: var(--shadow);
}

.badge {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  background: #ede9fe;
  color: var(--primary-dark);
  border: 1px solid #ddd6fe;
  border-radius: 999px;
  padding: 8px 12px;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 14px;
}

.page-header h1 {
  margin: 0;
  color: var(--text);
  font-size: clamp(34px, 4vw, 54px);
  letter-spacing: -1.5px;
}

.page-header p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 17px;
  max-width: 760px;
  line-height: 1.5;
}

.builder-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(360px, 0.75fr);
  gap: 24px;
  align-items: start;
}

.form-column {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.card,
.result-card,
.message-card {
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 24px;
  box-shadow: 0 12px 34px rgba(74, 35, 140, 0.08);
}

.card-header {
  margin-bottom: 18px;
}

.card-header h2,
.result-card h2,
.message-card h3 {
  margin: 0;
  color: var(--text);
  letter-spacing: -0.4px;
}

.card-header h2 {
  font-size: 22px;
}

.card-header p {
  margin: 7px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

.grid {
  display: grid;
  gap: 14px;
}

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

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

.full {
  grid-column: 1 / -1;
}

label {
  display: flex;
  flex-direction: column;
  gap: 7px;
  color: var(--text);
  font-size: 13px;
  font-weight: 700;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--border);
  background: #ffffff;
  border-radius: 14px;
  padding: 13px 14px;
  font-size: 14px;
  color: var(--text);
  outline: none;
  transition: 0.18s ease;
}

textarea {
  resize: vertical;
  min-height: 96px;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(124, 58, 237, 0.12);
}

input::placeholder,
textarea::placeholder {
  color: #aaa3b8;
}

.mini-output {
  margin-top: 16px;
  background: var(--soft);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 14px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.mini-output strong {
  color: var(--primary-dark);
}

.helper-text {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.result-panel {
  display: flex;
  flex-direction: column;
  gap: 18px;
  position: sticky;
  top: 22px;
}

.result-card {
  padding: 22px;
}

.result-card h2 {
  margin-bottom: 16px;
}

.hero-result {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #ffffff;
  border-radius: 22px;
  padding: 22px;
  margin-bottom: 14px;
}

.hero-result span,
.summary-result span {
  display: block;
  font-size: 13px;
  opacity: 0.86;
  margin-bottom: 6px;
}

.hero-result strong {
  display: block;
  font-size: clamp(28px, 4vw, 40px);
  letter-spacing: -1.2px;
}

.summary-result {
  background: var(--soft);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 15px;
  margin-bottom: 10px;
}

.summary-result strong {
  display: block;
  color: var(--text);
  font-size: 22px;
}

.breakdown {
  margin-top: 16px;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

.breakdown h3 {
  margin: 0 0 10px;
  font-size: 16px;
}

.breakdown p {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin: 8px 0;
  color: var(--muted);
  font-size: 14px;
}

.breakdown strong {
  color: var(--text);
  white-space: nowrap;
}

.warning-box {
  background: #fffbeb;
  border: 1px solid #fde68a;
  color: #92400e;
  border-radius: 16px;
  padding: 13px;
  font-size: 13px;
  line-height: 1.5;
  margin: 12px 0;
}

.warning-box.hidden {
  display: none;
}

.button-stack {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 18px;
}

button {
  border: none;
  border-radius: 15px;
  padding: 14px 16px;
  font-size: 14px;
  font-weight: 800;
  cursor: pointer;
  transition: 0.18s ease;
}

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

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

.primary-btn:hover {
  background: var(--primary-dark);
}

.secondary-btn {
  background: #ede9fe;
  color: var(--primary-dark);
}

.secondary-btn:hover {
  background: #ddd6fe;
}

.light-btn {
  background: #ffffff;
  color: var(--text);
  border: 1px solid var(--border);
}

.light-btn:hover {
  background: var(--soft);
}

.outline-btn {
  background: transparent;
  color: var(--error);
  border: 1px solid #fecaca;
}

.outline-btn:hover {
  background: #fef2f2;
}

.message-card {
  padding: 22px;
}

.message-card h3 {
  font-size: 16px;
  margin-bottom: 10px;
}

.message-card h3:not(:first-child) {
  margin-top: 18px;
}

.message-card textarea {
  font-size: 13px;
  line-height: 1.5;
  min-height: 150px;
}

@media (max-width: 1100px) {
  .builder-layout {
    grid-template-columns: 1fr;
  }

  .result-panel {
    position: static;
  }
}

@media (max-width: 760px) {
  .page-shell {
    padding: 18px;
  }

  .page-header {
    padding: 24px;
    border-radius: 22px;
  }

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

  .card,
  .result-card,
  .message-card {
    padding: 18px;
    border-radius: 20px;
  }

  .hero-result strong {
    font-size: 30px;
  }
}