/* Variables — mismo design system que alaiservices.com.ar */
:root {
  --bg: #0F1117;
  --surface: #1A1D27;
  --surface-2: #222636;
  --indigo: #6366F1;
  --indigo-dark: #4F52D4;
  --orange: #F59E0B;
  --text: #F1F5F9;
  --text-secondary: #94A3B8;
  --border: #2D3148;
  --radius: 12px;
  --radius-sm: 8px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* Header */
header {
  border-bottom: 1px solid var(--border);
  padding: 16px 24px;
}
.header-inner {
  max-width: 640px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 16px;
}
.logo {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 700;
  font-size: 18px;
  color: var(--indigo);
}
.header-sub {
  font-size: 14px;
  color: var(--text-secondary);
}

/* Main */
main {
  max-width: 640px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

/* Steps */
.step { display: none; }
.step.active { display: block; }

h1 {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 8px;
}
.subtitle {
  color: var(--text-secondary);
  font-size: 15px;
  margin-bottom: 28px;
}

/* Back button */
.back-btn {
  background: none;
  border: none;
  color: var(--indigo);
  font-size: 14px;
  cursor: pointer;
  padding: 0;
  margin-bottom: 20px;
  font-family: inherit;
}
.back-btn:hover { text-decoration: underline; }

/* Calendar */
.calendar {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.cal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.cal-header span {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 600;
  font-size: 16px;
}
.cal-nav {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  width: 32px;
  height: 32px;
  cursor: pointer;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.cal-nav:hover { background: var(--border); }
.cal-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}
.cal-day-name {
  text-align: center;
  font-size: 12px;
  color: var(--text-secondary);
  padding: 4px 0;
  font-weight: 500;
}
.cal-day {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  font-size: 14px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background 0.15s;
}
.cal-day:hover:not(.disabled):not(.empty) { background: var(--surface-2); border-color: var(--border); }
.cal-day.selected { background: var(--indigo); color: #fff; }
.cal-day.today { border-color: var(--indigo); }
.cal-day.disabled { color: var(--text-secondary); opacity: 0.35; cursor: default; }
.cal-day.empty { cursor: default; }

/* Slots */
.slots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
  gap: 10px;
}
.slot-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 12px 8px;
  font-size: 15px;
  font-family: inherit;
  cursor: pointer;
  text-align: center;
  transition: all 0.15s;
  font-weight: 500;
}
.slot-btn:hover { background: var(--surface-2); border-color: var(--indigo); }
.slot-btn.selected { background: var(--indigo); border-color: var(--indigo); color: #fff; }
.slots-loading { color: var(--text-secondary); font-size: 14px; }
.slots-empty { color: var(--text-secondary); font-size: 14px; }

/* Form */
.field {
  margin-bottom: 18px;
}
label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
input, textarea {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: inherit;
  font-size: 15px;
  padding: 10px 14px;
  transition: border-color 0.15s;
  outline: none;
}
input:focus, textarea:focus { border-color: var(--indigo); }
textarea { resize: vertical; }
input::placeholder, textarea::placeholder { color: var(--text-secondary); }

/* Buttons */
.btn-primary {
  width: 100%;
  background: var(--indigo);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 13px 24px;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
  margin-top: 8px;
  transition: background 0.15s;
}
.btn-primary:hover:not(:disabled) { background: var(--indigo-dark); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }

.btn-secondary {
  display: inline-block;
  background: var(--surface);
  border: 1px solid var(--indigo);
  color: var(--indigo);
  border-radius: var(--radius-sm);
  padding: 11px 24px;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  transition: background 0.15s;
  margin-top: 20px;
}
.btn-secondary:hover { background: var(--surface-2); }

/* Error */
.error-msg {
  color: #F87171;
  font-size: 14px;
  margin-top: 10px;
  min-height: 20px;
}

/* Confirmation */
.confirmation-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 32px;
  text-align: center;
}
.check-icon {
  width: 56px;
  height: 56px;
  background: #22C55E1A;
  border: 2px solid #22C55E;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: #22C55E;
  margin: 0 auto 20px;
}
.confirmation-detail {
  font-size: 17px;
  font-weight: 500;
  margin: 12px 0 8px;
  color: var(--text);
}
.confirmation-email {
  color: var(--text-secondary);
  font-size: 14px;
}

/* Responsive */
@media (max-width: 480px) {
  main { padding: 24px 16px 60px; }
  h1 { font-size: 22px; }
  .slots-grid { grid-template-columns: repeat(3, 1fr); }
}