:root {
  --bg: #0f172a;
  --card: #1e2937;
  --text: #f1f5f9;
  --muted: #94a3b8;
  --primary: #60a5fa;
  --primary-hover: #3b82f6;
  --accent: #818cf8;
  --border: #334155;
  --soft-border: #475569;
  --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.4);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, sans-serif;
  line-height: 1.6;
  padding: 32px 24px;
  min-height: 100vh;
}

.app {
  max-width: 1020px;
  margin: 0 auto;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 40px;
  box-shadow: var(--shadow);
  margin-bottom: 32px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.header {
  text-align: center;
  margin-bottom: 48px;
}

.header h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2.75rem;
  font-weight: 700;
  margin: 0 0 12px;
  background: linear-gradient(90deg, #60a5fa, #a5b4fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.03em;
}

.header p {
  color: var(--muted);
  font-size: 1.15rem;
  max-width: 420px;
  margin: 0 auto;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
  margin-top: 32px;
}

.time-row {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
}

.full-width {
  grid-column: 1 / -1;
  margin-top: 12px;
}

label {
  display: block;
  margin-bottom: 10px;
  font-weight: 600;
  color: var(--text);
  font-size: 0.95rem;
}

input,
select,
textarea {
  width: 100%;
  background: #334155;
  border: 2px solid var(--border);
  border-radius: 14px;
  padding: 14px 18px;
  color: var(--text);
  font: inherit;
  transition: all 0.2s;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(96, 165, 250, 0.2);
}

.datetime-control {
  display: grid;
  grid-template-columns: minmax(160px, 1fr) 82px 82px;
  gap: 12px;
}

.lunch-control {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.lunch-control input[type="number"] {
  flex: 1;
  min-width: 160px;
}

.checkbox-control {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
}

.checkbox-control input {
  width: auto;
  accent-color: var(--accent);
}

select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9L2 5h8z'/%3E%3C/svg%3E");
  background-position: right 18px center;
  background-repeat: no-repeat;
}

textarea {
  resize: vertical;
  min-height: 110px;
}

button {
  border: 0;
  border-radius: 14px;
  padding: 16px 32px;
  background: var(--primary);
  color: #0f172a;
  font-weight: 700;
  font-size: 1.05rem;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

button:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.buttons {
  display: flex;
  justify-content: center;
  margin-top: 36px;
}

.error {
  color: #f87171;
  font-weight: 600;
  min-height: 28px;
  margin-top: 20px;
  text-align: center;
}

.hidden { display: none; }

/* ==================== RESULTS ==================== */

.results h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2.1rem;
  text-align: center;
  margin: 0 0 32px;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 20px;
}

.result-grid > div,
.breakdown > div,
.total {
  background: #334155;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
}

.result-grid span,
.breakdown span,
.total span {
  display: block;
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 8px;
}

.result-grid strong,
.breakdown strong,
.total strong {
  font-size: 1.35rem;
  font-weight: 700;
}

.breakdown {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin: 32px 0 24px;
}

.breakdown > div {
  position: relative;
  padding-bottom: 32px; /* gör plats för tariffen längst ner */
}

.tariff {
  position: absolute;
  bottom: 12px;
  right: 16px;
  font-style: normal;
  font-size: 0.72rem;
  color: var(--muted);
  opacity: 0.7;
}

.total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(135deg, #1e40af, #312e81);
  border: none;
  padding: 28px 32px;
  margin-top: 20px;
  font-size: 1.15rem;
}

.total strong {
  font-size: 2.25rem;
  color: #bae6fd;
}

.summary {
  background: #1e2937;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  margin: 32px 0 20px;
  font-family: ui-monospace, monospace;
  font-size: 0.95rem;
  line-height: 1.65;
  white-space: pre-wrap;
  overflow-x: auto;
  color: #e2e8f0;
}

.summary-actions {
  display: flex;
  justify-content: flex-end;
}

/* ==================== MOBILE ==================== */
@media (max-width: 640px) {
  body {
    padding: 16px 12px;
    /* Förhindra horisontell scroll på iOS */
    overflow-x: hidden;
  }

  .app {
    /* Förhindra att innehåll sticker utanför på smala skärmar */
    width: 100%;
  }

  .card {
    padding: 24px 16px;
    border-radius: 16px;
    /* Inaktivera hover-transform på touch-enheter */
    transform: none !important;
  }

  .header {
    margin-bottom: 28px;
  }

  .header h1 {
    font-size: 1.6rem;
    letter-spacing: -0.02em;
  }

  .header p {
    font-size: 1rem;
  }

  .grid {
    gap: 16px;
    margin-top: 20px;
  }

  /* Datum + timme + minut: datum tar hela bredden, timme+minut bredvid varandra */
  .datetime-control {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .datetime-control input[type="date"] {
    grid-column: 1 / -1;
  }

  /* Större touch-yta på inputs/selects */
  input,
  select,
  textarea {
    padding: 12px 14px;
    font-size: 1rem; /* förhindrar iOS auto-zoom vid focus */
    border-radius: 10px;
  }

  .lunch-control {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .lunch-control input[type="number"] {
    width: 100%;
  }

  button {
    width: 100%;
    padding: 14px 24px;
    font-size: 1rem;
    border-radius: 10px;
  }

  /* Resultatgrid: 2 kolumner på mobil */
  .result-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .result-grid strong {
    font-size: 1.1rem;
  }

  /* Breakdown: en kolumn på smal skärm */
  .breakdown {
    grid-template-columns: 1fr;
    gap: 10px;
    margin: 20px 0 16px;
  }

  .breakdown strong {
    font-size: 1.15rem;
  }

  /* Tariff-texten kan ta mer plats när den inte måste trängas */
  .tariff {
    font-size: 0.68rem;
  }

  .total {
    padding: 20px;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .total strong {
    font-size: 1.8rem;
  }

  .summary {
    padding: 16px;
    font-size: 0.82rem;
    line-height: 1.55;
    margin: 20px 0 14px;
  }

  .summary-actions {
    justify-content: stretch;
  }

  .summary-actions button {
    width: 100%;
  }
}