* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: grid;
  place-items: center;
  -webkit-font-smoothing: antialiased;
}
.auth-shell { width: min(480px, 94vw); padding: 20px; }
.auth-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 32px; }
.auth-brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); font-weight: 700; font-size: 18px; }
.auth-brand span { width: 38px; height: 38px; border-radius: 10px; background: linear-gradient(135deg, var(--accent), var(--accent2)); display: grid; place-items: center; color: #fff; font-weight: 800; }
.auth-back { font-size: 13px; color: var(--text3); text-decoration: none; transition: color 0.3s; }
.auth-back:hover { color: var(--text); }
.auth-card { background: var(--glass); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border: 1px solid var(--glass-border); border-radius: var(--radius-lg); padding: 36px; box-shadow: var(--shadow); }
.auth-form { display: flex; flex-direction: column; gap: 6px; }
.auth-form h1 { font-size: 24px; font-weight: 800; margin-bottom: 4px; }
.auth-form p { color: var(--text2); font-size: 14px; margin-bottom: 20px; line-height: 1.6; }
.auth-field { display: flex; flex-direction: column; gap: 6px; font-size: 13px; font-weight: 600; color: var(--text2); }
.auth-field input { padding: 12px 16px; border: 1px solid var(--glass-border); border-radius: 12px; background: var(--input-bg); color: var(--text); font-size: 15px; font-family: var(--font); outline: none; transition: border-color 0.3s; }
.auth-field input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(124,58,237,0.12); }
[data-theme="dark"] .auth-field input { box-shadow: none; }
[data-theme="dark"] .auth-field input:focus { box-shadow: 0 0 0 3px rgba(139,92,246,0.15); }
.auth-row { display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: var(--text2); }
.auth-row input[type="checkbox"] { width: auto; accent-color: var(--accent); }
.auth-row a { color: var(--accent); text-decoration: none; }
.auth-submit { padding: 14px; border: none; border-radius: 12px; background: linear-gradient(135deg, var(--accent), var(--accent2)); color: #fff; font-weight: 700; font-size: 15px; cursor: pointer; transition: all 0.3s; font-family: var(--font); margin-top: 8px; }
.auth-submit:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(124,58,237,0.3); }
[data-theme="dark"] .auth-submit:hover { box-shadow: 0 8px 25px rgba(139,92,246,0.4); }
.auth-link { text-align: center; font-size: 14px; color: var(--text3); margin-top: 16px; }
.auth-link a { color: var(--accent); text-decoration: none; }
.auth-divider { display: flex; align-items: center; gap: 12px; color: var(--text3); font-size: 13px; margin: 16px 0; }
.auth-divider::before, .auth-divider::after { content: ''; flex: 1; height: 1px; background: var(--glass-border); }
.social-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.social-btn { display: flex; align-items: center; justify-content: center; padding: 12px; border-radius: 12px; border: 1px solid var(--glass-border); background: var(--input-bg); color: var(--text2); text-decoration: none; font-size: 13px; font-weight: 600; transition: all 0.3s; cursor: pointer; }
.social-btn:hover { border-color: var(--accent); color: var(--text); background: rgba(124,58,237,0.06); }
[data-theme="dark"] .social-btn:hover { background: rgba(139,92,246,0.08); }
.auth-alert { padding: 14px 16px; border-radius: 12px; font-size: 14px; margin-bottom: 16px; }
.auth-alert.error { background: rgba(220,38,38,0.08); border: 1px solid rgba(220,38,38,0.15); color: var(--danger); }
[data-theme="dark"] .auth-alert.error { background: rgba(239,68,68,0.1); border: 1px solid rgba(239,68,68,0.3); }
.auth-alert.success { background: rgba(5,150,105,0.08); border: 1px solid rgba(5,150,105,0.15); color: var(--success); }
[data-theme="dark"] .auth-alert.success { background: rgba(16,185,129,0.1); border: 1px solid rgba(16,185,129,0.3); }
.auth-visual { display: none; }
@media (max-width: 640px) { .auth-shell { padding: 12px; } .auth-card { padding: 24px; } .social-grid { grid-template-columns: 1fr; } }