:root {
  --bg-gradient-start: #050510;
  --bg-gradient-end: #141428;
  --card-bg: rgba(15, 15, 30, 0.9);
  --card-border: rgba(255, 255, 255, 0.06);
  --accent: #ff6b6b;
  --accent-soft: rgba(255, 107, 107, 0.16);
  --accent-secondary: #a855f7;
  --text-main: #f5f5fb;
  --text-muted: #a0a0c0;
  --text-soft: #6b6b8c;
  --surface-soft: rgba(255, 255, 255, 0.02);
  --shadow-soft: 0 18px 60px rgba(0, 0, 0, 0.7);
  --radius-lg: 18px;
  --radius-pill: 999px;
  --border-width: 1px;
  --focus-ring: 0 0 0 1px rgba(255, 255, 255, 0.5), 0 0 0 6px rgba(255, 107, 107, 0.25);
  --transition-fast: 150ms ease-out;
  --transition-med: 220ms ease-out;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  font-family: "IBM Plex Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  color: var(--text-main);
  background:
    radial-gradient(circle at 0% 0%, rgba(168, 85, 247, 0.35), transparent 55%),
    radial-gradient(circle at 100% 100%, rgba(255, 107, 107, 0.4), transparent 55%),
    linear-gradient(145deg, var(--bg-gradient-start), var(--bg-gradient-end));
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
}

.app {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 20px 40px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.app-header {
  text-align: center;
  margin-bottom: 4px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}

.app-title {
  margin: 0;
}

.app-logo {
  display: block;
  max-width: min(320px, 70vw);
  height: auto;
}

.app-subtitle {
  margin: 8px 0 0;
  max-width: 680px;
  font-family: "Domine", "Times New Roman", serif;
  font-size: 1.75rem;
  line-height: 1.4;
  color: #ffffff;
}

.app-hero-illustration {
  display: block;
  max-width: min(420px, 90vw);
  height: auto;
  margin-top: 8px;
  opacity: 0.95;
}

.app-main {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1.1fr);
  gap: 18px;
  align-items: flex-start;
}

.card {
  border-radius: var(--radius-lg);
  background: linear-gradient(
      145deg,
      rgba(255, 255, 255, 0.06),
      rgba(255, 255, 255, 0.01)
    );
  background-color: var(--card-bg);
  border: var(--border-width) solid var(--card-border);
  box-shadow: var(--shadow-soft);
  padding: 18px 18px 16px;
  backdrop-filter: blur(24px) saturate(160%);
}

.card-output {
  position: sticky;
  top: 16px;
}

.card-header {
  margin-bottom: 12px;
}

.card-header h2 {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-soft);
}

.card-tagline {
  margin: 6px 0 0;
  font-size: 13px;
  color: var(--text-muted);
}

.inputs-grid {
  display: grid;
  grid-template-columns: 1.1fr 1.3fr;
  gap: 14px 18px;
  margin-top: 12px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field label,
.field-label {
  font-size: 13px;
  color: var(--text-soft);
}

.label-hint {
  font-size: 11px;
  color: var(--text-muted);
  margin-left: 4px;
}

input[type="number"],
select {
  border-radius: 9px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(7, 7, 20, 0.7);
  color: var(--text-main);
  padding: 8px 10px;
  font-size: 14px;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast),
    background var(--transition-fast), transform var(--transition-fast);
}

input[type="number"]:focus,
select:focus {
  border-color: rgba(255, 255, 255, 0.6);
  box-shadow: var(--focus-ring);
}

input[type="number"]::placeholder {
  color: var(--text-soft);
}

input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

input[type="number"] {
  -moz-appearance: textfield;
}

.field-salary-row {
  display: flex;
  gap: 8px;
  align-items: stretch;
}

.field-salary-row input {
  flex: 1 1 auto;
}

.field-salary-row select {
  flex: 0 0 68px;
  text-align: center;
}

.duration-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}

.pill {
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(10, 10, 20, 0.6);
  color: var(--text-main);
  font-size: 13px;
  padding: 6px 11px;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast),
    transform var(--transition-fast), box-shadow var(--transition-fast), color var(--transition-fast);
}

.pill:hover {
  border-color: rgba(255, 255, 255, 0.4);
  background: rgba(24, 24, 45, 0.95);
}

.pill:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.pill-active {
  background: radial-gradient(circle at 0 0, rgba(255, 255, 255, 0.16), transparent 55%),
    linear-gradient(145deg, rgba(255, 107, 107, 0.8), rgba(168, 85, 247, 0.92));
  border-color: transparent;
  color: #0b0912;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.6);
}

.advanced-toggle {
  margin-top: 12px;
  width: 100%;
  border-radius: 11px;
  border: 1px dashed rgba(255, 255, 255, 0.18);
  background: rgba(8, 8, 18, 0.8);
  color: var(--text-muted);
  padding: 7px 10px;
  font-size: 13px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast),
    color var(--transition-fast), transform var(--transition-fast);
}

.advanced-toggle:hover {
  background: rgba(18, 18, 32, 0.9);
  border-color: rgba(255, 255, 255, 0.32);
}

.advanced-toggle:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.advanced-toggle-chevron {
  font-size: 14px;
}

.advanced-panel {
  margin-top: 12px;
  padding: 10px 10px 4px;
  border-radius: 12px;
  background: radial-gradient(circle at 0 0, rgba(255, 255, 255, 0.09), transparent 55%),
    rgba(10, 10, 22, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.advanced-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 14px;
}

.overhead-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

input[type="range"] {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-secondary));
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(255, 107, 107, 0.5);
  cursor: pointer;
}

input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(255, 107, 107, 0.5);
  cursor: pointer;
}

.overhead-value {
  min-width: 44px;
  text-align: right;
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  color: var(--accent);
}

.cost-main {
  margin-top: 10px;
}

.cost-amount-wrapper {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 10px 14px 14px;
  border-radius: 16px;
  background: radial-gradient(circle at 0 0, rgba(255, 255, 255, 0.14), transparent 55%),
    radial-gradient(circle at 100% 100%, rgba(168, 85, 247, 0.3), transparent 55%),
    var(--accent-soft);
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: 0 20px 55px rgba(0, 0, 0, 0.85);
}

.cost-currency {
  font-family: "Space Grotesk", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  font-size: clamp(30px, 4vw, 38px);
  color: rgba(255, 255, 255, 0.88);
}

.cost-amount {
  font-family: "Space Grotesk", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  font-size: clamp(40px, 7vw, 64px);
  letter-spacing: 0.02em;
}

.cost-caption {
  margin: 8px 0 0;
  font-size: 13px;
  color: var(--text-muted);
}

.cost-breakdown {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 16px;
}

.breakdown-item {
  padding: 8px 9px;
  border-radius: 12px;
  background: var(--surface-soft);
  border: 1px solid rgba(255, 255, 255, 0.07);
}

.breakdown-label {
  margin: 0;
  font-size: 12px;
  color: var(--text-soft);
}

.breakdown-value {
  margin: 4px 0 0;
  font-size: 14px;
  font-variant-numeric: tabular-nums;
}

.card-comparisons {
  margin-top: 4px;
}

.comparisons-list {
  list-style: none;
  padding: 0;
  margin: 10px 0 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.comparisons-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 9px;
  border-radius: 10px;
  background: rgba(9, 9, 20, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 13px;
  color: var(--text-muted);
}

.comparison-emoji {
  font-size: 18px;
}

.comparison-text {
  flex: 1;
}

.comparison-highlight {
  color: var(--accent);
  font-weight: 500;
}

.card-share {
  margin-top: 4px;
}

.share-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-top: 8px;
}

.btn-primary {
  border-radius: var(--radius-pill);
  border: none;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  background: radial-gradient(circle at 0 0, rgba(255, 255, 255, 0.16), transparent 55%),
    linear-gradient(145deg, #ff6b6b, #ff9966);
  color: #0b0912;
  cursor: pointer;
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.7);
  transition: transform var(--transition-med), box-shadow var(--transition-med), filter 140ms ease-out;
}

.btn-primary:hover {
  transform: translateY(-1px);
  filter: brightness(1.03);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.9);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.7);
}

.btn-primary:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.share-feedback {
  min-height: 1em;
  font-size: 12px;
  color: var(--text-muted);
}

.share-feedback--success {
  color: #4ade80;
}

.share-feedback--error {
  color: #f97373;
}

.share-preview {
  margin-top: 12px;
  padding: 10px 11px;
  border-radius: 12px;
  background: radial-gradient(circle at 0 0, rgba(255, 255, 255, 0.12), transparent 60%),
    radial-gradient(circle at 100% 100%, rgba(168, 85, 247, 0.24), transparent 65%),
    rgba(6, 6, 18, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.16);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.85);
}

.share-preview-text {
  margin: 0;
  font-size: 13px;
}

.share-domain {
  margin: 6px 0 0;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-soft);
}

.app-footer {
  margin-top: 8px;
  font-size: 12px;
  color: var(--text-soft);
}

.app-footer a {
  color: var(--accent-secondary);
  text-decoration: none;
}

.app-footer a:hover {
  text-decoration: underline;
}

.seo-copy {
  max-width: 960px;
  margin: 0 auto 40px;
  padding: 0 20px 8px;
  font-size: 14px;
  color: var(--text-muted);
}

.seo-copy h2 {
  margin: 20px 0 8px;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-soft);
}

.seo-copy p {
  margin: 4px 0 0;
  max-width: 720px;
  line-height: 1.6;
}

.cost-amount-animate {
  animation: popAmount 220ms ease-out;
}

@keyframes popAmount {
  0% {
    transform: translateY(0) scale(1);
  }
  35% {
    transform: translateY(-3px) scale(1.03);
  }
  100% {
    transform: translateY(0) scale(1);
  }
}

@media (max-width: 860px) {
  .app-main {
    grid-template-columns: minmax(0, 1fr);
  }

  .card-output {
    order: -1;
    position: static;
  }
}

@media (max-width: 640px) {
  .app {
    padding-inline: 16px;
  }

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

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

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