/* ==========================================================================
   Login & sign up, in the studio system
   ========================================================================== */

.auth-container { min-height: 100dvh; display: flex; align-items: center; justify-content: center; padding: 32px 20px; }
.auth-card { width: 100%; max-width: 460px; background: var(--surface-raised); border: 1px solid var(--ink); border-radius: 8px; box-shadow: 4px 5px 0 var(--ink); padding: 40px 36px; }
.auth-header { text-align: center; margin-bottom: 28px; }
.auth-logo { display: inline-block; margin-bottom: 16px; }
.auth-logo-text { font: 400 30px/1 var(--font-display); letter-spacing: -.02em; }
.auth-title { font: 400 40px/1.02 var(--font-display); letter-spacing: -.025em; margin-bottom: 6px; }
.auth-subtitle { font: italic 18px/1.3 var(--font-instrument-serif); color: var(--muted); }
.auth-form { display: flex; flex-direction: column; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-label { font: 500 11px/1.5 var(--font-ibm-plex-mono); letter-spacing: .09em; text-transform: uppercase; color: var(--muted); }
.form-options { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 16px; font-size: 14px; }
.checkbox-label { display: flex; align-items: flex-start; gap: 8px; cursor: pointer; }
.checkbox-label input[type="checkbox"] { appearance: none; flex-shrink: 0; width: 18px; height: 18px; margin-top: 2px; border-radius: 4px; border: 1.5px solid var(--ink); background: var(--paper); display: grid; place-items: center; cursor: pointer; }
.checkbox-label input[type="checkbox"]:checked { background: var(--accent); }
.checkbox-label input[type="checkbox"]:checked::after { content: ""; width: 9px; height: 5px; border-left: 1.5px solid var(--ink); border-bottom: 1.5px solid var(--ink); transform: translateY(-1px) rotate(-45deg); }
.forgot-link, .terms-link, .auth-link { text-decoration: underline; text-underline-offset: 4px; font-weight: 500; }
.btn-auth { width: 100%; min-height: var(--cta-height); font-size: 16px; margin-top: 6px; }
.auth-error, .auth-success { padding: 12px 16px; border-radius: 8px; font-size: 14px; }
.auth-error { color: var(--error); background: #fcebe4; border: 1px solid #d7a393; }
.auth-success { color: var(--success); background: #e9eddf; border: 1px solid #b7c4a6; }
.auth-divider { display: flex; align-items: center; justify-content: center; margin: 24px 0 16px; color: var(--muted); font: 11px var(--font-ibm-plex-mono); letter-spacing: .09em; text-transform: uppercase; }
.auth-footer { text-align: center; font-size: 14px; color: var(--muted); }
.loading-spinner { display: inline-block; width: 16px; height: 16px; border-radius: 50%; border: 2px solid #29231c40; border-top-color: var(--ink); animation: spin .9s linear infinite; vertical-align: middle; }
@keyframes spin { to { transform: rotate(360deg); } }

@media (max-width: 480px) {
  .auth-card { padding: 28px 20px; }
  .auth-title { font-size: 34px; }
}