/* Auth Screen Modernization */
        .auth-wrapper {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: var(--bg-body);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 10000;
            padding: 20px;
            background-image: radial-gradient(circle at 20% 30%, rgba(99, 102, 241, 0.05) 0%, transparent 40%),
                radial-gradient(circle at 80% 70%, rgba(168, 85, 247, 0.05) 0%, transparent 40%);
        }

        .auth-card {
            background: var(--bg-card);
            width: 100%;
            max-width: 420px;
            padding: 40px;
            border-radius: 32px;
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.08);
            border: 1px solid var(--border-color);
            animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1);
        }

        .auth-header {
            text-align: center;
            margin-bottom: 35px;
        }

        .auth-logo {
            width: 64px;
            height: 64px;
            background: var(--gradient-primary);
            color: white;
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            margin: 0 auto 20px;
            box-shadow: var(--shadow-float);
        }

        .auth-header h1 {
            font-size: 1.75rem;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 8px;
            letter-spacing: -0.5px;
        }

        .auth-header p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        .input-wrapper {
            position: relative;
            display: flex;
            align-items: center;
            margin-bottom: 5px;
        }

        .input-wrapper i:first-child {
            position: absolute;
            left: 16px;
            color: var(--text-light);
            font-size: 1rem;
        }

        .input-wrapper .input-box {
            padding-left: 48px;
        }

        .input-wrapper #togglePassword {
            position: absolute;
            right: 16px;
            color: var(--text-light);
            cursor: pointer;
            transition: color 0.2s;
        }

        .input-wrapper #togglePassword:hover {
            color: var(--primary);
        }

        .auth-footer {
            margin-top: 25px;
            text-align: center;
        }

        .auth-footer p {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .auth-footer a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 700;
            transition: opacity 0.2s;
        }

        .auth-footer a:hover {
            opacity: 0.8;
            text-decoration: underline;
        }

        .password-strength {
            margin-top: 8px;
            margin-bottom: 4px;
        }

        .password-strength-track {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 5px;
        }

        .password-strength-track span {
            height: 4px;
            border-radius: 999px;
            background: var(--border-color);
            transition: background-color 0.2s ease, transform 0.2s ease;
        }

        .password-strength-copy {
            display: flex;
            justify-content: space-between;
            gap: 12px;
            margin-top: 6px;
            font-size: 0.72rem;
            line-height: 1.35;
            color: var(--text-muted);
        }

        #passwordStrengthLabel {
            flex: 0 0 auto;
            font-weight: 800;
        }

        .password-strength[data-level="short"] #passwordStrengthLabel,
        .password-strength[data-level="weak"] #passwordStrengthLabel {
            color: #e11d48;
        }

        .password-strength[data-level="moderate"] #passwordStrengthLabel {
            color: #d97706;
        }

        .password-strength[data-level="strong"] #passwordStrengthLabel {
            color: #059669;
        }

        .password-strength[data-level="short"] .password-strength-track span:nth-child(1),
        .password-strength[data-level="weak"] .password-strength-track span:nth-child(-n+2) {
            background: #e11d48;
        }

        .password-strength[data-level="moderate"] .password-strength-track span:nth-child(-n+3) {
            background: #d97706;
        }

        .password-strength[data-level="strong"] .password-strength-track span {
            background: #10b981;
        }

        .auth-status {
            margin: 0 0 14px;
            padding: 11px 13px;
            border: 1px solid transparent;
            border-radius: 12px;
            font-size: 0.8rem;
            font-weight: 650;
            line-height: 1.4;
        }

        .auth-status.error {
            color: #9f1239;
            background: #fff1f2;
            border-color: #fecdd3;
        }

        .auth-status.warning {
            color: #92400e;
            background: #fffbeb;
            border-color: #fde68a;
        }

        .auth-status.success {
            color: #065f46;
            background: #ecfdf5;
            border-color: #a7f3d0;
        }

        #authBtn:disabled {
            cursor: not-allowed;
            opacity: 0.52;
            filter: saturate(0.6);
            box-shadow: none;
        }

        @media (max-width: 480px) {
            .auth-card {
                padding: 28px 22px;
            }
        }