/* === SECTION CENTERING ==================================== */

#registro-proveedor {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3rem 1.5rem;
}

/* === CONTAINER ============================================ */

.form-container {
  width: 100%;
  max-width: 700px;
}

/* === TITLE ================================================ */

.form-container h1 {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.form-subtitle {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

/* === FORM CARD ============================================ */

#provider_form {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

/* === FORM GROUP =========================================== */

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.form-group label {
  font-size: 0.75rem;
  color: var(--text-subtle);
}


/* === INPUTS =============================================== */

input,
select,
textarea {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.85rem;
  background: rgba(24, 18, 18, 0.595);
  color: var(--text-primary);
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 6px;
  padding: 0.5rem 0.65rem;
  width: 100%;
  outline: none;
  transition: border 0.15s ease, background 0.15s ease;
}

select#subject_input{
  background-color: var(--bg-card);
}
input:focus,
select:focus,
textarea:focus {
  border-color: rgba(107, 140, 255, 0.4);
  background: rgba(255, 255, 255, 0.02);
}

/* === PLACEHOLDER ========================================== */

::placeholder {
  color: var(--text-subtle);
  font-size: 0.8rem;
}

/* === BUTTON =============================================== */

.form-submit {
  margin-top: 0.5rem;
}

#form_button {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.8rem;
  font-weight: 500;
  color: #fff;
  background: var(--accent);
  border: none;
  border-radius: 6px;
  padding: 0.5rem 1rem;
  cursor: pointer;
  transition: background 0.15s ease;
}

#form_button:hover {
  background: var(--accent-hover);
}

/* === RESPONSIVE =========================================== */

@media (max-width: 600px) {
  #registro-proveedor {
    padding: 2.5rem 1.25rem 3.5rem;
  }
}
@media (prefers-color-scheme: light) {
  input,
  select,
  textarea {
    background: #ffffff;
    border-color: rgba(0, 0, 0, 0.12);
    color: #111318;
  }

  input:focus,
  select:focus,
  textarea:focus {
    border-color: rgba(74, 108, 247, 0.4);
    background: #ffffff;
  }

  ::placeholder {
    color: rgba(17, 19, 24, 0.35);
  }

  .form-group label {
    color: rgba(17, 19, 24, 0.5);
  }

  #form_button {
    color: #ffffff;
  }
}

/* === BURGER ================================================ */
.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: transparent;
  border: 1px solid var(--btn-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 8px;
  z-index: 200;
}

.burger span {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

/* Burger open state — X */
.burger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.burger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.burger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile nav open */
.site-nav.open {
  display: flex !important;
  flex-direction: column;
  position: fixed;
  top: var(--header-h);
  left: 0; right: 0;
  background: var(--bg-header);
  padding: 1rem 1.25rem 2rem;
  border-bottom: 1px solid var(--border-card);
  z-index: 99;
  animation: nav-drop 0.2s ease;
}

.site-nav.open ul {
  flex-direction: column;
  gap: 0.25rem;
}

.site-nav.open a {
  font-size: 1rem;
  padding: 0.75rem 1rem;
}

@keyframes nav-drop {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

@media (max-width: 768px) {
  .burger { display: flex; }
}