/* ==========================================================
   AUTHENTICATION STYLES (login.html)
   MINIMAL, CLEAN, FLAT (Factoriz Core Aesthetic)
   ========================================================== */

.auth-container {
  width: 100%;
  max-width: 900px;
  margin: 4rem auto;
  padding: 0 1.5rem;
  min-height: calc(100vh - 350px);
}

.auth-header {
  margin-bottom: 2rem;
  border-bottom: 2px solid var(--text-color);
  padding-bottom: 0.75rem;
}

.auth-title {
  font-family: 'Silkscreen', monospace;
  font-size: 1.5rem;
  letter-spacing: 0.1em;
  margin: 0;
  color: var(--text-color);
}

.auth-tabs {
  display: flex;
  gap: 0;
  margin-bottom: 2rem;
  border: 1px solid var(--border-color);
}

.auth-tab-btn {
  flex: 1;
  background: transparent;
  border: none;
  padding: 0.75rem 1rem;
  font-family: 'Silkscreen', monospace;
  font-size: 0.85rem;
  color: var(--nav-link-color);
  cursor: pointer;
  letter-spacing: 0.05em;
  transition: background 0.15s, color 0.15s;
  text-align: center;
}

.auth-tab-btn:first-child {
  border-right: 1px solid var(--border-color);
}

.auth-tab-btn:hover {
  color: var(--text-color);
  background: var(--grid-line);
}

.auth-tab-btn.active {
  background: var(--text-color);
  color: var(--bg-color);
  font-weight: bold;
}

.auth-card {
  width: 100%;
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  padding: 2.5rem;
}

.auth-form {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-group {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-color);
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 0.4rem;
}

.form-label .required {
  font-family: 'Silkscreen', monospace;
  font-size: 0.75rem;
  color: #3182ce;
  border: none;
  padding: 0;
  margin-left: 0.15rem;
}

.form-label .optional {
  font-family: 'Silkscreen', monospace;
  font-size: 0.7rem;
  color: var(--nav-link-color);
}

.form-input {
  width: 100%;
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: 0;
  padding: 0.75rem;
  color: var(--text-color);
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color 0.15s;
}

.form-input::placeholder {
  color: var(--nav-link-color);
  opacity: 0.6;
}

.form-input:focus {
  outline: none;
  border-color: var(--text-color);
}

.form-helper {
  font-size: 0.75rem;
  color: var(--nav-link-color);
  line-height: 1.4;
}

.checkbox-group {
  width: 100%;
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  margin-top: 0.5rem;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  background: var(--grid-line);
}

.checkbox-input {
  margin-top: 0.15rem;
  accent-color: var(--text-color);
  width: 1rem;
  height: 1rem;
  cursor: pointer;
}

.checkbox-label {
  font-size: 0.8rem;
  color: var(--text-color);
  line-height: 1.5;
}

.checkbox-label a {
  text-decoration: underline;
}

.checkbox-label a:hover {
  text-decoration: none;
}

.auth-submit-btn {
  width: 100%;
  background: var(--btn-bg);
  color: var(--btn-text);
  border: 1px solid var(--btn-bg);
  border-radius: 0;
  padding: 0.85rem;
  font-family: 'Silkscreen', monospace;
  font-size: 0.9rem;
  font-weight: bold;
  cursor: pointer;
  transition: opacity 0.15s;
  letter-spacing: 0.1em;
  margin-top: 0.5rem;
}

.auth-submit-btn:hover:not(:disabled) {
  opacity: 0.85;
}

.auth-submit-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.auth-error-msg {
  border: 1px solid var(--text-color);
  background: var(--grid-line);
  color: var(--text-color);
  padding: 0.75rem 1rem;
  font-size: 0.8rem;
  margin-bottom: 1.5rem;
  display: none;
  line-height: 1.4;
}

.auth-success-msg {
  border: 1px solid var(--text-color);
  background: var(--grid-line);
  color: var(--text-color);
  padding: 0.75rem 1rem;
  font-size: 0.8rem;
  margin-bottom: 1.5rem;
  display: none;
  line-height: 1.4;
}