.margin-top-20px {
  margin-top: 20px;
}

.contact-info {
  text-align: center;
  margin: 60px auto;
  font-size: 24px;
  color: #333;
}
.contact-info a { color: #007bff; text-decoration: none; }

.contact-form-section {
  max-width: 780px;
  margin: 20px auto 60px;
  padding: 24px;
  background: #fafafa;
  border-radius: 12px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.06);
  font-family: Arial, sans-serif;
  font-size: 16px; /* καλύτερη αναγνωσιμότητα */
  line-height: 1.5;
}
.contact-form-section h2 {
  text-align: center;
  margin-bottom: 18px;
  font-size: 24px;
  color: #222;
  font-size: 28px;
  font-weight: 700;
}

/* Rows layout */
.contact-form-section .row {
  display: flex;
  gap: 12px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.contact-form-section label {
  flex: 1 1 280px;
  display: flex;
  flex-direction: column;
  font-weight: 600;
  color: #333;
  font-size: 15px;
  font-weight: 600;
}

/* Inputs */
.contact-form-section input,
.contact-form-section textarea {
  margin-top: 6px;
  padding: 12px;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  font-size: 15px;
  font-family: inherit;
  transition: box-shadow .18s ease, border-color .18s ease;
  background-color: #fff;
}
.contact-form-section input:hover,
.contact-form-section textarea:hover {
  border-color: #9ca3af;
}
.contact-form-section input:focus,
.contact-form-section textarea:focus {
  margin-top: 6px;
  padding: 12px;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  font-size: 15px;
  transition: box-shadow .18s ease, border-color .18s ease;
  font-family: inherit;

  outline: none;
  border-color: #2563eb;
  box-shadow: 0 0 0 3px rgba(37,99,235,0.15);
}

/* Responsive Design */
@media (max-width: 600px) {
  .contact-form-section .row {
    flex-direction: column;
  }
}

/* Send button */
.send-btn {
  width: 100%;
  padding: 13px 16px;
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  cursor: pointer;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  box-shadow: 0 4px 10px rgba(37,99,235,0.25);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.send-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 14px rgba(37,99,235,0.35);
}

/* spinner in button */
.send-btn .spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }

.send-btn[disabled] { opacity: 0.75; cursor: not-allowed; }

/* Feedback & errors */
.form-feedback { 
  margin-top: 12px; 
  font-size: 15px; 
  color: #055160; 
}
.form-feedback.success { 
  margin-top: 12px; 
  font-size: 16px; 
  color: #16a34a; 
}
.form-feedback.error { 
  margin-top: 12px; 
  font-size: 16px; 
  color: #dc2626; 
}

/* error message always block and full width, small min-height so layout δεν πηδάει */
.error-message {
  display: block;
  margin-top: 6px;
  font-size: 0.92rem;
  min-height: 1.1em; /* κρατάει χώρο όταν είναι άδειο */
  color: #dc2626;
  width: 100%;
  box-sizing: border-box;
  font-weight: 500;
}

/* Responsive */
@media (max-width: 720px) {
  .contact-form-section { padding: 18px; }
  .contact-form-section label { flex-basis: 100%; }
  .send-btn { font-size: 15px; padding: 12px; }
}