/* Modern CSS for SEPA pain.001 generator */
:root {
  --bg: #ffffff;
  --text: #0f172a; /* slate-900 */
  --muted: #64748b; /* slate-500 */
  --border: #e5e7eb; /* gray-200 */
  --card: #ffffff;
  --primary: #0d6efd; /* bootstrap-ish blue */
  --primary-foreground: #ffffff;
  --danger: #dc3545;
  --radius: 12px;
  --shadow: 0 6px 24px rgba(2, 6, 23, 0.08);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1220;
    --text: #e5e7eb;
    --muted: #94a3b8;
    --border: #1f2937;
    --card: #0f172a;
    --primary: #60a5fa;
    --primary-foreground: #0b1220;
    --danger: #f87171;
    --shadow: 0 10px 30px rgba(0,0,0,.35);
  }
}

/* Base */
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 2rem;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.5;
}

h1, h2, h3 { line-height: 1.2; }
h1 { font-size: clamp(1.4rem, 1.2rem + 1.2vw, 2rem); margin-bottom: 1rem; }

.note { color: var(--muted); font-size: .95rem; }

/* Cards / Panels */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem;
}

/* Fieldset/legend */
fieldset {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  margin-bottom: 2rem;
  background: var(--card);
  box-shadow: var(--shadow);
}
legend {
  font-weight: 700;
  padding: 0 .5rem;
}

/* Forms */
input[type="text"], input[type="date"], input[type="number"], select {
  width: 100%;
  padding: .5rem .6rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg);
  color: var(--text);
  outline: none;
  transition: border-color .15s ease, box-shadow .15s ease;
}
input:focus, select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 25%, transparent);
}

.stack { display: flex; gap: .6rem; align-items: center; flex-wrap: wrap; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .5rem .8rem;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, #ffffff, #f7f7f7);
  color: var(--text);
  border-radius: 10px;
  cursor: pointer;
  box-shadow: 0 1px 0 rgba(0,0,0,.02);
  transition: transform .05s ease, box-shadow .15s ease, background .15s ease;
  text-decoration: none;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--primary);
  color: var(--primary-foreground);
  border-color: var(--primary);
}
.btn-primary:hover {
  filter: brightness(1.05);
}

.btn-danger {
  background: var(--danger);
  color: #fff;
  border-color: var(--danger);
}
.btn-danger:hover { filter: brightness(1.05); }

/* Table */
table { width: 100%; border-collapse: collapse; margin-top: .5rem; }
th, td {
  padding: .6rem .5rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
th {
  text-align: left;
  font-weight: 600;
  background: color-mix(in srgb, var(--border) 40%, transparent);
}
tr:hover { background: color-mix(in srgb, var(--border) 20%, transparent); }
.row-actions { white-space: nowrap; }

/* Details / summary */
details { border: 1px dashed var(--border); padding: .8rem; border-radius: 10px; background: color-mix(in srgb, var(--border) 16%, transparent); }
summary { cursor: pointer; font-weight: 600; }
summary::marker { color: var(--muted); }

/* Code preview */
pre {
  white-space: pre-wrap;
  word-break: break-word;
  background: #0f172a;
  color: #e2e8f0;
  padding: 1rem;
  border-radius: var(--radius);
  overflow: auto;
}

/* Responsive */
@media (max-width: 900px) {
  body { margin: 1rem; }
  fieldset { padding: .8rem; }
  table { display: block; overflow-x: auto; white-space: nowrap; }
}

/* Utility */
label strong { font-weight: 700; }

/* Subtle animations */
@media (prefers-reduced-motion: no-preference) {
  fieldset, .card { animation: pop .2s ease-out; }
}
@keyframes pop { from { transform: scale(.99); opacity:.0; } to { transform: scale(1); opacity:1; } }