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

:root {
  --azul:    #0ea5e9;
  --azul2:   #38bdf8;
  --azul3:   #7dd3fc;
  --azul-cl: #f0f9ff;
  --fondo:   #f0f9ff;
  --blanco:  #ffffff;
  --texto:   #0c1a2e;
  --gris:    #64748b;
  --borde:   #bae6fd;
  --rojo:    #dc2626;
  --amarillo:#d97706;
  --radio:   16px;
  --sombra:  0 4px 16px rgba(14,165,233,.12);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--fondo);
  color: var(--texto);
  min-height: 100vh;
  font-size: 18px;
  line-height: 1.5;
}

/* ── Layout ── */
.page {
  max-width: 520px;
  margin: 0 auto;
  padding: 28px 20px 56px;
}

/* ── Logo / Header ── */
.logo {
  text-align: center;
  margin-bottom: 32px;
}
.logo-icon {
  width: 64px; height: 64px;
  background: var(--azul);
  border-radius: 18px;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 14px;
  box-shadow: 0 4px 14px rgba(14,165,233,.30);
}
.logo-icon svg { width: 34px; height: 34px; color: #fff; stroke: #fff; }
.logo h1 {
  font-size: 24px;
  font-weight: 800;
  color: var(--texto);
  letter-spacing: -.3px;
}
.logo p { color: var(--gris); font-size: 15px; margin-top: 4px; }

/* ── Tarjeta ── */
.card {
  background: var(--blanco);
  border-radius: var(--radio);
  box-shadow: var(--sombra);
  padding: 28px 24px;
  margin-bottom: 20px;
  border: 1px solid rgba(199,215,248,.6);
}

/* ── Formulario ── */
label {
  display: block;
  font-weight: 700;
  margin-bottom: 8px;
  font-size: 16px;
  color: var(--texto);
}
input[type="text"],
input[type="tel"],
input[type="email"],
input[type="password"],
select {
  width: 100%;
  padding: 15px 14px;
  border: 2px solid var(--borde);
  border-radius: 12px;
  font-size: 19px;
  color: var(--texto);
  background: #fff;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
  margin-bottom: 18px;
}
input:focus, select:focus {
  border-color: var(--azul2);
  box-shadow: 0 0 0 3px rgba(14,165,233,.12);
}

/* ── Botones ── */
.btn {
  display: block;
  width: 100%;
  padding: 17px;
  border: none;
  border-radius: 12px;
  font-size: 18px;
  font-weight: 700;
  cursor: pointer;
  text-align: center;
  transition: all .2s;
  margin-bottom: 12px;
  text-decoration: none;
  letter-spacing: .1px;
}
.btn:active { transform: scale(.98); }
.btn-primary {
  background: var(--azul);
  color: #fff;
  box-shadow: 0 3px 10px rgba(14,165,233,.25);
}
.btn-primary:hover { background: var(--azul2); box-shadow: 0 4px 14px rgba(14,165,233,.35); }
.btn-outline { background: transparent; color: var(--azul); border: 2px solid var(--azul); }
.btn-outline:hover { background: var(--azul-cl); }
.btn-danger  { background: var(--rojo); color: #fff; }
.btn-sm      { padding: 9px 16px; font-size: 15px; width: auto; display: inline-block; margin-bottom: 0; border-radius: 8px; }

/* ── PIN pad ── */
.pin-display {
  display: flex;
  gap: 18px;
  justify-content: center;
  margin: 24px 0;
}
.pin-dot {
  width: 20px; height: 20px;
  border-radius: 50%;
  border: 2.5px solid var(--azul);
  background: transparent;
  transition: all .15s;
}
.pin-dot.filled {
  background: var(--azul);
  box-shadow: 0 2px 8px rgba(14,165,233,.35);
  transform: scale(1.1);
}

.pin-pad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  max-width: 300px;
  margin: 0 auto;
}
.pin-key {
  padding: 20px 10px;
  font-size: 24px;
  font-weight: 700;
  border: 2px solid var(--borde);
  border-radius: 14px;
  background: #fff;
  cursor: pointer;
  text-align: center;
  transition: all .12s;
  color: var(--texto);
  box-shadow: 0 1px 4px rgba(0,0,0,.06);
}
.pin-key:hover  { background: var(--azul-cl); border-color: var(--azul3); color: var(--azul); }
.pin-key:active { background: var(--borde); transform: scale(.95); }
.pin-key.delete { color: var(--rojo); }

/* ── Servicios ── */
.servicios-grid { display: grid; gap: 12px; }
.servicio-card {
  background: #fff;
  border: 2px solid var(--borde);
  border-radius: var(--radio);
  padding: 18px 16px;
  cursor: pointer;
  transition: all .2s;
  display: flex;
  align-items: center;
  gap: 14px;
}
.servicio-card:hover, .servicio-card.selected {
  border-color: var(--azul2);
  box-shadow: 0 0 0 3px rgba(14,165,233,.12), var(--sombra);
  transform: translateY(-1px);
}
.servicio-icono {
  width: 48px; height: 48px; min-width: 48px;
  background: var(--azul-cl);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
}
.servicio-info h3 { font-size: 18px; margin-bottom: 3px; }
.servicio-info .cuota { color: var(--azul); font-weight: 700; font-size: 15px; }
.servicio-info .dias  { color: var(--gris); font-size: 13px; margin-top: 2px; }

/* ── Slots de horario ── */
.slots-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.slot-btn {
  padding: 15px 8px;
  font-size: 17px;
  font-weight: 700;
  border: 2px solid var(--borde);
  border-radius: 12px;
  background: #fff;
  cursor: pointer;
  text-align: center;
  transition: all .15s;
}
.slot-btn:hover, .slot-btn.selected {
  border-color: var(--azul2);
  background: var(--azul-cl);
  color: var(--azul);
  transform: translateY(-1px);
}
.slot-btn:disabled, .slot-btn.ocupado {
  background: #f8fafc;
  color: #cbd5e1;
  cursor: not-allowed;
  border-color: #e2e8f0;
}

/* ── Fechas ── */
.fechas-lista { display: flex; flex-wrap: wrap; gap: 10px; }
.fecha-btn {
  padding: 12px 16px;
  font-size: 16px;
  font-weight: 700;
  border: 2px solid var(--borde);
  border-radius: 12px;
  background: #fff;
  cursor: pointer;
  transition: all .15s;
  line-height: 1.2;
  text-align: center;
  min-width: 72px;
}
.fecha-btn span { display: block; font-size: 11px; color: var(--gris); font-weight: 400; margin-top: 2px; }
.fecha-btn:hover, .fecha-btn.selected {
  border-color: var(--azul2);
  background: var(--azul-cl);
  color: var(--azul);
  box-shadow: 0 2px 8px rgba(14,165,233,.15);
}

/* ── Pasos ── */
.pasos {
  display: flex;
  align-items: flex-start;
  margin-bottom: 28px;
}
.paso {
  flex: 1;
  text-align: center;
  font-size: 12px;
  color: var(--gris);
  position: relative;
}
.paso::after {
  content: '';
  position: absolute;
  top: 15px; left: 50%; width: 100%;
  height: 2px;
  background: var(--borde);
  z-index: 0;
}
.paso:last-child::after { display: none; }
.paso-num {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--borde);
  color: var(--gris);
  font-weight: 700;
  font-size: 14px;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 6px;
  position: relative; z-index: 1;
  transition: all .2s;
}
.paso.activo .paso-num {
  background: var(--azul);
  color: #fff;
  box-shadow: 0 2px 8px rgba(14,165,233,.35);
}
.paso.done .paso-num { background: var(--azul3); color: #fff; }
.paso.activo { color: var(--azul); font-weight: 700; }

/* ── Citas lista ── */
.cita-item {
  background: #fff;
  border: 1.5px solid var(--borde);
  border-radius: var(--radio);
  padding: 18px;
  margin-bottom: 12px;
  transition: box-shadow .2s;
}
.cita-item:hover { box-shadow: var(--sombra); }
.cita-item h3 { font-size: 18px; margin-bottom: 4px; }
.cita-item .fecha-hora { color: var(--azul); font-weight: 700; font-size: 16px; }
.cita-item .estado { display: inline-block; padding: 4px 12px; border-radius: 20px; font-size: 13px; font-weight: 700; margin-top: 8px; }
.estado-confirmada        { background:#dbeafe; color:#1e40af; }
.estado-completada        { background:#dcfce7; color:#166534; }
.estado-cancelada_paciente,
.estado-cancelada_admin   { background:#fee2e2; color:#991b1b; }
.estado-no_asistio        { background:#fef9c3; color:#854d0e; }
.estado-pendiente         { background:#f3f4f6; color:#374151; }

/* ── Alertas ── */
.alerta {
  padding: 14px 16px;
  border-radius: 12px;
  font-size: 16px;
  margin-bottom: 16px;
  display: none;
  font-weight: 500;
}
.alerta.show { display: block; }
.alerta-error { background:#fee2e2; color:#991b1b; border:1px solid #fca5a5; }
.alerta-ok    { background:#dbeafe; color:#1e40af; border:1px solid #93c5fd; }
.alerta-info  { background:#eff6ff; color:#1d4ed8; border:1px solid #bfdbfe; }

/* ── Nav bar ── */
.nav-bar {
  display: flex;
  justify-content: space-around;
  background: #fff;
  box-shadow: 0 -1px 0 var(--borde), 0 -4px 16px rgba(0,0,0,.06);
  position: fixed;
  bottom: 0; left: 0; right: 0;
  padding: 10px 0 max(10px, env(safe-area-inset-bottom));
  z-index: 100;
}
.nav-item {
  display: flex; flex-direction: column; align-items: center;
  font-size: 11px; color: var(--gris); text-decoration: none;
  cursor: pointer; gap: 3px; font-weight: 600;
}
.nav-item svg { width: 24px; height: 24px; }
.nav-item.activo { color: var(--azul); }

/* ── Tabla admin ── */
.tabla { width: 100%; border-collapse: collapse; font-size: 15px; }
.tabla th { background: var(--fondo); padding: 10px 12px; text-align: left; font-size: 13px; color: var(--gris); border-bottom: 2px solid var(--borde); font-weight: 700; }
.tabla td { padding: 12px; border-bottom: 1px solid var(--borde); vertical-align: middle; }
.tabla tr:hover td { background: var(--azul-cl); }

/* ── Spinner ── */
.spinner { text-align: center; padding: 40px; color: var(--gris); font-size: 16px; }
.spinner::before { content: '⟳ '; animation: spin 1s linear infinite; display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Divider ── */
.divider { text-align:center; color:var(--gris); font-size:14px; margin:4px 0 16px; position:relative; }
.divider::before, .divider::after { content:''; position:absolute; top:50%; width:40%; height:1px; background:var(--borde); }
.divider::before { left:0; } .divider::after { right:0; }

/* ── Responsive ── */
@media (max-width: 380px) {
  body { font-size: 16px; }
  .pin-key { padding: 16px 8px; font-size: 22px; }
  .slots-grid { grid-template-columns: repeat(2, 1fr); }
}