:root {
  --bg: #f5f7fa;
  --glass-bg: rgba(255, 255, 255, 0.35);
  --glass-border: rgba(255, 255, 255, 0.6);
  --glass-shadow: 0 8px 32px rgba(31, 38, 135, 0.12);
  --text: #1d1d1f;
  --text-muted: #6e6e73;
  --accent: #0071e3;
  --accent-soft: rgba(0, 113, 227, 0.12);
  --radius: 24px;
  --radius-sm: 14px;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
}

.background {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.6;
}

.orb-1 {
  width: 500px;
  height: 500px;
  background: linear-gradient(135deg, #a5f3fc, #c4b5fd);
  top: -120px;
  right: -120px;
}

.orb-2 {
  width: 420px;
  height: 420px;
  background: linear-gradient(135deg, #fbcfe8, #fde68a);
  bottom: -80px;
  left: -80px;
}

.orb-3 {
  width: 300px;
  height: 300px;
  background: linear-gradient(135deg, #bbf7d0, #bfdbfe);
  top: 40%;
  left: 35%;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 20px 48px;
}

.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
}

.card {
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
}

.header {
  text-align: center;
}

.header h1 {
  margin: 0 0 4px;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.subtitle {
  margin: 0 0 20px;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.grand-total {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 16px 32px;
  background: rgba(255, 255, 255, 0.55);
  border-radius: var(--radius);
  border: 1px solid var(--glass-border);
}

.grand-total__label {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.grand-total__value {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--accent);
}

.days {
  display: grid;
  gap: 16px;
}

.day-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  align-items: center;
}

.day-card__title {
  grid-column: 1 / -1;
  margin: 0 0 4px;
  font-size: 1.1rem;
  font-weight: 600;
  text-transform: capitalize;
}

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

.input-group label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

.input-group input {
  width: 100%;
  padding: 14px 16px;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
  background: rgba(255, 255, 255, 0.65);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.input-group input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
  background: rgba(255, 255, 255, 0.85);
}

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

.extra label {
  font-size: 0.95rem;
  font-weight: 600;
}

.extra input {
  width: 100%;
  padding: 14px 16px;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
  background: rgba(255, 255, 255, 0.65);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  outline: none;
}

.extra input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.summary h2 {
  margin: 0 0 16px;
  font-size: 1.15rem;
  font-weight: 600;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  font-size: 0.95rem;
}

.summary-row:last-child {
  border-bottom: none;
}

.summary-row--total {
  margin-top: 8px;
  padding-top: 16px;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
  font-weight: 700;
  font-size: 1.1rem;
}

@media (max-width: 480px) {
  .container {
    padding: 20px 14px 32px;
  }

  .card {
    padding: 18px;
  }

  .grand-total__value {
    font-size: 1.8rem;
  }

  .day-card {
    grid-template-columns: 1fr;
  }
}