.hidden {
            display: none !important;
        }

        .auth-page {
            min-height: calc(100vh - 70px);
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 40px;
        }

        .auth-shell {
            width: 100%;
            max-width: 1180px;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            background: white;
            border-radius: 28px;
            overflow: hidden;
            box-shadow: 0 24px 60px rgba(15, 76, 129, 0.18);
            border: 1px solid #eef2f7;
        }

        .auth-brand-panel {
            position: relative;
            padding: 56px;
            color: white;
            background:
                radial-gradient(circle at top right, rgba(255,255,255,0.24), transparent 34%),
                linear-gradient(135deg, #0f4c81, #1976d2);
            overflow: hidden;
        }

        .auth-brand-panel::after {
            content: "";
            position: absolute;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(255,255,255,0.09);
            bottom: -90px;
            right: -70px;
        }

        .brand-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255,255,255,0.16);
            border: 1px solid rgba(255,255,255,0.25);
            padding: 10px 14px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 28px;
        }

        .auth-brand-panel h1 {
            margin: 0;
            font-size: 46px;
            line-height: 1.08;
            letter-spacing: -0.04em;
            max-width: 560px;
        }

        .brand-description {
            margin-top: 22px;
            max-width: 560px;
            font-size: 17px;
            line-height: 1.75;
            opacity: 0.95;
        }

        .feature-list {
            display: grid;
            gap: 16px;
            margin-top: 36px;
            max-width: 560px;
        }

        .feature-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            background: rgba(255,255,255,0.13);
            border: 1px solid rgba(255,255,255,0.22);
            border-radius: 18px;
            padding: 16px;
            backdrop-filter: blur(10px);
        }

        .feature-icon {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: rgba(255,255,255,0.22);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 18px;
        }

        .feature-item strong {
            display: block;
            font-size: 15px;
            margin-bottom: 4px;
        }

        .feature-item span {
            display: block;
            font-size: 13px;
            line-height: 1.5;
            opacity: 0.9;
        }

        .auth-form-panel {
            padding: 52px;
            background: #ffffff;
            display: flex;
            align-items: center;
        }

        .auth-card {
            width: 100%;
        }

        .auth-header {
            text-align: left;
            margin-bottom: 28px;
        }

        .auth-header h2 {
            margin: 0;
            font-size: 34px;
            color: #111827;
            letter-spacing: -0.03em;
        }

        .auth-header p {
            margin: 10px 0 0 0;
            color: #6b7280;
            font-size: 15px;
            line-height: 1.6;
        }

        .toggle-tabs {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 8px;
            background: #f1f5f9;
            padding: 6px;
            border-radius: 16px;
            margin-bottom: 28px;
        }

        .toggle-tab {
            border: none;
            background: transparent;
            padding: 11px;
            border-radius: 12px;
            cursor: pointer;
            font-weight: 800;
            color: #64748b;
            transition: 0.2s;
        }

        .toggle-tab.active {
            background: white;
            color: #0f4c81;
            box-shadow: 0 6px 16px rgba(15, 76, 129, 0.12);
        }

        .input-wrapper {
            position: relative;
        }

        .form-input.error {
            border-color: #e74c3c;
            background: #fff5f5;
        }

        .form-input.success {
            border-color: #1abc9c;
            background: #f0fdfa;
        }

        .password-toggle {
            position: absolute;
            right: 12px;
            top: 50%;
            transform: translateY(-50%);
            border: none;
            background: transparent;
            cursor: pointer;
            color: #64748b;
            font-weight: 700;
            font-size: 12px;
        }

        .error-message {
            display: none;
            color: #c0392b;
            background: #fee2e2;
            border: 1px solid #fecaca;
            border-radius: 10px;
            padding: 9px 10px;
            font-size: 13px;
            margin-top: 8px;
            font-weight: 700;
        }

        .submit-btn {
            width: 100%;
            border: none;
            padding: 15px;
            font-size: 16px;
            font-weight: 800;
            border-radius: 14px;
            cursor: pointer;
            color: white;
            background: linear-gradient(135deg, #1abc9c, #16a085);
            box-shadow: 0 10px 24px rgba(26,188,156,0.28);
            transition: 0.25s;
            margin-top: 8px;
        }

        .submit-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 14px 30px rgba(26,188,156,0.36);
        }

        .submit-btn.dark {
            background: linear-gradient(135deg, #0f4c81, #1976d2);
            box-shadow: 0 10px 24px rgba(25,118,210,0.28);
        }

        .submit-btn.dark:hover {
            box-shadow: 0 14px 30px rgba(25,118,210,0.36);
        }

        .switch-prompt {
            text-align: center;
            margin-top: 22px;
            font-size: 14px;
            color: #64748b;
        }

        .switch-link {
            color: #1976d2;
            text-decoration: none;
            font-weight: 800;
        }

        .switch-link:hover {
            text-decoration: underline;
        }

        .security-note {
            margin-top: 24px;
            padding: 14px;
            border-radius: 14px;
            background: #f8fafc;
            border: 1px solid #eef2f7;
            color: #64748b;
            font-size: 13px;
            line-height: 1.6;
        }

        .security-note strong {
            color: #0f4c81;
        }

        @media (max-width: 980px) {
            .auth-shell {
                grid-template-columns: 1fr;
            }

            .auth-brand-panel {
                padding: 40px;
            }

            .auth-brand-panel h1 {
                font-size: 36px;
            }

            .auth-form-panel {
                padding: 40px;
            }
        }

        @media (max-width: 640px) {
            .auth-page {
                padding: 20px;
            }

            .auth-brand-panel,
            .auth-form-panel {
                padding: 28px;
            }

            .auth-header h2 {
                font-size: 28px;
            }

            .auth-brand-panel h1 {
                font-size: 31px;
            }
        }