/* ── General ──────────────────────────────────────────────────────────────── */

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

/* ── Logo Icon ────────────────────────────────────────────────────────────── */

.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  background: linear-gradient(135deg, #0d6efd 0%, #0a58ca 100%);
  border-radius: 20px;
  color: white;
  font-size: 2rem;
  box-shadow: 0 4px 15px rgba(13, 110, 253, 0.3);
}

/* ── Drop Zone ────────────────────────────────────────────────────────────── */

.drop-zone {
  border: 2px dashed #0d6efd;
  border-radius: 12px;
  padding: 2.5rem 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease;
  background-color: #f8f9ff;
  user-select: none;
}

.drop-zone:hover,
.drop-zone--active {
  background-color: #e8f0fe;
  border-color: #0a58ca;
}

.drop-zone--has-file {
  border-style: solid;
  border-color: #198754; /* Green when a file is ready */
  background-color: #f0fff4;
}

/* ── Card ─────────────────────────────────────────────────────────────────── */

.card {
  border-radius: 16px;
}

/* ── Buttons — make them easier to tap on mobile ──────────────────────────── */

.btn-lg {
  font-size: 1.1rem;
  border-radius: 10px;
}

/* ── Success icon animation ───────────────────────────────────────────────── */

.success-icon {
  animation: pop-in 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes pop-in {
  0%   { transform: scale(0.5); opacity: 0; }
  100% { transform: scale(1);   opacity: 1; }
}

/* ── Mobile tweaks ────────────────────────────────────────────────────────── */

@media (max-width: 576px) {
  .card-body {
    padding: 1.5rem !important;
  }

  .drop-zone {
    padding: 1.5rem 1rem;
  }

  h1 {
    font-size: 1.6rem;
  }
}