:host {
  --ff-primary: #6d64e8;
  --ff-primary-2: #4f46e5;
  --ff-text: #0f172a;
  --ff-bg: #ffffff;
  --ff-radius: 16px;
  --ff-shadow: 0 24px 48px rgba(0, 0, 0, 0.3);
  --ff-ring: rgba(109, 100, 232, 0.25);
  font: 400 16px/1.5 system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--ff-text);
  display: inline-block;
}

:host *,
:host *::before,
:host *::after {
  box-sizing: border-box;
}

/* Κουμπί ανοίγματος */

.btn {
  appearance: none;
  border: 0;
  cursor: pointer;
  padding: 12px 18px;
  border-radius: 12px;
  font-weight: 800;
  font-size: 16px;
  color: #fff;
  background: linear-gradient(90deg, var(--ff-primary), var(--ff-primary-2));
  box-shadow: 0 12px 22px rgba(79, 70, 229, 0.28);
  transition: transform 0.15s ease, box-shadow 0.15s ease, filter 0.15s ease;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 28px rgba(79, 70, 229, 0.32);
  filter: brightness(1.03);
}

.btn:focus {
  outline: none;
  box-shadow: 0 0 0 4px var(--ff-ring);
}

/* Overlay + Modal */

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.55);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 999999;
  backdrop-filter: blur(4px);
}

.overlay.open {
  display: flex;
}

.modal {
  position: relative;
  background: var(--ff-bg);
  border-radius: var(--ff-radius);
  width: min(92vw, 720px);
  max-height: 86vh;
  overflow: auto;
  box-shadow: var(--ff-shadow);
  padding: 22px;
  animation: vf-pop-in 0.22s ease;
}

@keyframes vf-pop-in {
  from {
    transform: scale(0.96);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

/* Κουμπί κλεισίματος */

.close {
  position: absolute;
  top: 10px;
  right: 12px;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: 1px solid rgba(15, 23, 42, 0.1);
  background: #fff;
  color: #475569;
  font-size: 22px;
  line-height: 1;
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.1s ease;
  z-index: 2;
}

.close:hover {
  background: #f1f5f9;
  transform: translateY(-1px);
}

.close:focus {
  outline: none;
  box-shadow: 0 0 0 4px var(--ff-ring);
}

.header {
  margin: 2px 34px 14px 6px;
  font-weight: 900;
  font-size: 1.1rem;
  color: var(--ff-text);
}

/* Περιεχόμενο φόρμας */

.content ::slotted(*) {
  /* εδώ μπορείς να κάνεις tweak αν θες spacing γύρω από FluentForm */
}

@media (max-width: 480px) {
  .modal {
    padding: 16px;
  }
}