.container h1 {
  font-size: clamp(2rem, 6vw, 3rem);
  font-weight: 600;
  color: var(--color-black);
  text-align: center;
  margin-bottom: 1rem;
}

.form-messages {
  margin-bottom: var(--gap-xl);
  padding: 1rem;
  border-radius: var(--radius-medium);
  display: none;
  animation: slideIn var(--duration-medium) var(--ease-out);
}

.form-messages.success {
  background-color: var(--color-primary);
  color: var(--color-black);
  display: block;
}

.form-messages.error {
  background-color: var(--color-error-bg);
  color: var(--color-text-error-dark);
  display: block;
}

@keyframes slideIn {
  from { opacity: 0; transform: translateY(-10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.form-group {
  margin-bottom: 1.5rem;
  position: relative;
}

.form-group.message-group {
  flex: 1;
  display: flex;
  flex-direction: column;
}

form label {
  display: block;
  font-family: var(--font-secondary);
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--color-black);
}

.required {
  color: var(--color-text-error);
  font-weight: bold;
  margin-left: 0.25rem;
}

.optional {
  color: var(--color-text-light);
  font-weight: normal;
  font-style: italic;
  font-size: 0.9em;
  margin-left: 0.25rem;
}

form input[type="text"],
form input[type="email"],
form input[type="tel"],
form textarea {
  width: 100%;
  max-width: none;
  padding: 0.75rem;
  border: var(--border-width-medium) solid var(--color-black);
  border-radius: var(--radius-medium);
  font-family: var(--font-secondary);
  font-size: 1rem;
  background-color: var(--color-white);
  transition: border-color var(--duration-medium) var(--ease-default),
              box-shadow var(--duration-medium) var(--ease-default);
}

form input:focus,
form textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: var(--shadow-focus-primary);
}

form input.error-field,
form textarea.error-field {
  border-color: var(--color-text-error);
  box-shadow: 0 0 0 3px var(--color-error-transparent);
}

form input.success-field,
form textarea.success-field {
  border-color: var(--color-success-validation);
  box-shadow: 0 0 0 3px var(--color-success-transparent);
}

form textarea {
  resize: none;
  overflow-y: auto;
  min-height: calc(30vh - 100px);
  max-height: calc(40vh - 100px);
  height: calc(35vh - 100px);
  line-height: 1.5;
}

.message-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 0.5rem;
}

.field-hint {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-top: 0.25rem;
}

.character-counter {
  font-size: 0.875rem;
  color: var(--color-text-light);
  font-weight: 500;
}

.character-counter.warning { color: var(--color-primary); }
.character-counter.valid   { color: var(--color-success-validation); }

.error-message {
  color: var(--color-text-error);
  font-size: 0.875rem;
  margin-top: 0.5rem;
  display: block;
  min-height: 1.2em;
  line-height: 1.2;
  animation: errorSlide var(--duration-medium) var(--ease-out);
}

.error-message:empty { display: none; }

@keyframes errorSlide {
  from { opacity: 0; transform: translateY(-5px); }
  to   { opacity: 1; transform: translateY(0); }
}

.submit-button {
  width: 100%;
  padding: 1rem var(--gap-xl);
  background: linear-gradient(135deg, var(--color-black) 0%, var(--color-black) 100%);
  color: var(--color-white);
  border: none;
  border-radius: var(--radius-medium);
  font-family: var(--font-primary);
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--duration-medium) var(--ease-aggressive);
  position: relative;
  overflow: hidden;
  margin-top: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.submit-button:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  transform: var(--transform-scale-hover-small);
  box-shadow: var(--shadow-card-hover);
}

.submit-button:disabled {
  background: var(--color-text-light);
  cursor: not-allowed;
  transform: none;
}

.button-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid transparent;
  border-top: 2px solid var(--color-white);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  display: none;
}

.submit-button.loading .button-spinner { display: block; }
.submit-button.loading .button-text   { margin-right: 0.5rem; }

@keyframes spin {
  0%   { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@media (max-width: 768px) {
  form textarea {
    min-height: calc(25vh - 80px);
    max-height: calc(35vh - 80px);
    height: calc(30vh - 80px);
  }

  .field-hint, .character-counter { font-size: 0.8rem; }
}

/* === Mobile form fixes === */
@media (max-width: 480px) {
  form textarea {
    min-height: calc(20vh - 60px);
    max-height: calc(35vh - 60px);
    height: calc(28vh - 60px);
  }

  .submit-button {
    padding: 0.9rem 1rem;
    font-size: 0.95rem;
  }

  .message-footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
  }

  .character-counter {
    align-self: flex-end;
  }
}