.auth-body { min-height: 100vh; }
.auth-bg {
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #6366F1 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    position: relative;
}
[data-theme="dark"] .auth-bg {
    background: linear-gradient(135deg, #1E1B4B 0%, #0F172A 50%, #1E293B 100%);
}
.auth-theme-btn {
    position: fixed; top: 16px; right: 16px;
    background: rgba(255,255,255,0.2);
    border: none; border-radius: 50%;
    width: 40px; height: 40px;
    display: flex; align-items: center; justify-content: center;
    font-size: 18px; color: white; cursor: pointer;
    backdrop-filter: blur(4px);
    transition: var(--transition);
    z-index: 10;
}
.auth-theme-btn:hover { background: rgba(255,255,255,0.35); }
.auth-container { width: 100%; max-width: 420px; }
.auth-brand { text-align: center; margin-bottom: 24px; }
.auth-logo {
    width: 64px; height: 64px; border-radius: 20px;
    background: white;
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 30px; color: var(--primary);
    margin-bottom: 12px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}
.auth-brand h1 { font-size: 24px; font-weight: 800; color: white; }
.auth-brand p { font-size: 14px; color: rgba(255,255,255,0.8); margin-top: 4px; }
.auth-card {
    background: var(--card-bg);
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
    overflow: hidden;
}
.auth-card-header {
    padding: 24px 28px 0;
}
.auth-card-header h2 { font-size: 22px; font-weight: 700; }
.auth-form { padding: 20px 28px 28px; }
.auth-footer {
    text-align: center;
    padding: 0 28px 24px;
    font-size: 14px;
    color: var(--text-muted);
}
.auth-footer a { color: var(--primary); font-weight: 600; }
.auth-divider {
    display: flex; align-items: center; gap: 12px;
    margin: 16px 0; color: var(--text-muted); font-size: 13px;
}
.auth-divider::before, .auth-divider::after {
    content: ''; flex: 1; height: 1px; background: var(--border);
}
.auth-alert {
    display: flex; align-items: flex-start; gap: 8px;
    margin: 0 28px 16px;
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    font-size: 13px;
}
.auth-alert-danger { background: var(--danger-light); color: var(--danger); }
.auth-alert-success { background: var(--success-light); color: var(--success); }
.google-btn {
    width: 100%;
    display: flex; align-items: center; justify-content: center; gap: 10px;
    padding: 11px 16px;
    background: var(--card-bg);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px; font-weight: 600; color: var(--text);
    cursor: pointer; transition: var(--transition);
}
.google-btn:hover { background: var(--hover-bg); }
.google-btn svg { width: 20px; height: 20px; }
.otp-inputs { display: flex; gap: 8px; justify-content: center; }
.otp-inputs input {
    width: 48px; height: 54px;
    text-align: center; font-size: 22px; font-weight: 700;
    border: 1.5px solid var(--border); border-radius: var(--radius-sm);
    background: var(--input-bg); color: var(--text);
    outline: none; transition: var(--transition);
}
.otp-inputs input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(99,102,241,0.15); }