:root {
                --psu-blue-deep: #002855;
                --psu-blue-primary: #004b87;
                --psu-blue-accent: #0284c7;
                --psu-blue-light: #e0f2fe;
                --surface-card: rgba(255, 255, 255, 0.94);
                --text-main: #0f172a;
                --text-muted: #64748b;
            }

            body, html {
                font-family: 'Prompt', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif !important;
                background-color: #f1f5f9;
                color: var(--text-main);
                min-height: 100vh;
            }

            /* Ambient background */
            .login-page-wrapper {
                min-height: 100vh;
                position: relative;
                display: flex;
                flex-direction: column;
                justify-content: space-between;
                background: linear-gradient(135deg, #f8fafc 0%, #eef4fb 40%, #e2eaf5 100%);
                overflow-x: hidden;
            }

            /* Decorative Background Glows */
            .ambient-glow {
                position: absolute;
                border-radius: 50%;
                filter: blur(90px);
                opacity: 0.45;
                pointer-events: none;
                z-index: 0;
            }
            .ambient-glow-1 {
                top: -120px;
                left: -80px;
                width: 480px;
                height: 480px;
                background: radial-gradient(circle, #38bdf8 0%, #0284c7 40%, transparent 70%);
            }
            .ambient-glow-2 {
                bottom: -100px;
                right: -60px;
                width: 550px;
                height: 550px;
                background: radial-gradient(circle, #60a5fa 0%, #004b87 50%, transparent 70%);
                opacity: 0.35;
            }
            .ambient-glow-3 {
                top: 40%;
                left: 45%;
                width: 350px;
                height: 350px;
                background: radial-gradient(circle, #bae6fd 0%, transparent 70%);
                opacity: 0.5;
            }

            /* Subtle pattern grid */
            .pattern-overlay {
                position: absolute;
                inset: 0;
                background-image: radial-gradient(rgba(0, 75, 135, 0.07) 1.5px, transparent 1.5px);
                background-size: 32px 32px;
                pointer-events: none;
                z-index: 0;
            }

            /* Top Navigation Header */
            .modern-header {
                position: relative;
                z-index: 2;
                background: rgba(255, 255, 255, 0.78);
                backdrop-filter: blur(14px);
                -webkit-backdrop-filter: blur(14px);
                border-bottom: 1px solid rgba(226, 232, 240, 0.8);
                padding: 16px 0;
                box-shadow: 0 4px 20px -5px rgba(0, 0, 0, 0.03);
            }
            .header-logo-wrap img {
                height: 62px;
                width: auto;
                transition: transform 0.3s ease;
            }
            .header-logo-wrap:hover img {
                transform: scale(1.02);
            }

            .header-badge {
                display: inline-flex;
                align-items: center;
                gap: 8px;
                background: rgba(2, 132, 199, 0.08);
                color: #0369a1;
                font-size: 0.85rem;
                font-weight: 500;
                padding: 6px 14px;
                border-radius: 30px;
                border: 1px solid rgba(2, 132, 199, 0.2);
            }
            .pulse-dot {
                width: 8px;
                height: 8px;
                background-color: #10b981;
                border-radius: 50%;
                box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
                animation: pulseAnimation 2s infinite;
            }
            @keyframes pulseAnimation {
                0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.6); }
                70% { box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
                100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
            }

            /* Main Content Container */
            .main-content {
                position: relative;
                z-index: 1;
                padding: 40px 0;
                flex: 1;
                display: flex;
                align-items: center;
            }

            /* Glassmorphism Card */
            .login-card {
                background: var(--surface-card);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                border: 1px solid rgba(255, 255, 255, 0.9);
                border-radius: 28px;
                box-shadow: 0 20px 45px -12px rgba(0, 40, 95, 0.12),
                            0 2px 6px -1px rgba(0, 0, 0, 0.04),
                            inset 0 1px 0 rgba(255, 255, 255, 0.8);
                padding: 40px;
                position: relative;
                overflow: hidden;
                transition: box-shadow 0.3s ease, transform 0.3s ease;
            }
            .login-card:hover {
                box-shadow: 0 25px 55px -12px rgba(0, 40, 95, 0.16),
                            0 4px 12px -2px rgba(0, 0, 0, 0.04);
            }

            .card-accent-line {
                position: absolute;
                top: 0;
                left: 0;
                right: 0;
                height: 4px;
                background: linear-gradient(90deg, #003366, #0066cc, #38bdf8);
            }

            /* Card Header Icons & Typography */
            .card-icon-badge {
                width: 58px;
                height: 58px;
                background: linear-gradient(135deg, #003366 0%, #0056b3 100%);
                border-radius: 18px;
                display: flex;
                align-items: center;
                justify-content: center;
                margin: 0 auto 16px auto;
                box-shadow: 0 8px 18px -3px rgba(0, 51, 102, 0.35);
                color: #ffffff;
                transition: transform 0.3s ease;
            }
            .login-card:hover .card-icon-badge {
                transform: translateY(-2px) scale(1.05);
            }

            .card-title {
                font-size: 1.65rem;
                font-weight: 700;
                color: #0f274a;
                margin-bottom: 6px;
                letter-spacing: -0.02em;
            }
            .card-subtitle {
                color: #64748b;
                font-size: 0.95rem;
                font-weight: 400;
                margin-bottom: 0;
            }
            .system-chip {
                display: inline-block;
                margin-top: 8px;
                background: #f1f5f9;
                color: #334155;
                font-size: 0.78rem;
                font-weight: 600;
                padding: 4px 12px;
                border-radius: 14px;
                border: 1px solid #e2e8f0;
                letter-spacing: 0.03em;
            }

            /* SSO Login Button (Hero CTA) */
            .sso-btn-wrapper {
                padding: 30px 0 20px 0;
            }

            .psu-sso-btn {
                width: 100%;
                display: flex !important;
                align-items: center !important;
                justify-content: space-between !important;
                padding: 16px 24px !important;
                background: linear-gradient(135deg, #002e62 0%, #004b87 50%, #0284c7 100%) !important;
                background-size: 200% auto !important;
                color: #ffffff !important;
                border-radius: 18px !important;
                border: 1px solid rgba(255, 255, 255, 0.25) !important;
                text-decoration: none !important;
                box-shadow: 0 10px 25px -4px rgba(0, 51, 102, 0.4),
                            0 4px 10px rgba(2, 132, 199, 0.2) !important;
                transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1) !important;
                position: relative;
                overflow: hidden;
            }

            .psu-sso-btn::before {
                content: '';
                position: absolute;
                top: 0;
                left: -100%;
                width: 70%;
                height: 100%;
                background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
                transform: skewX(-25deg);
                transition: left 0.75s ease;
            }

            .psu-sso-btn:hover::before {
                left: 140%;
            }

            .psu-sso-btn:hover {
                transform: translateY(-3px);
                box-shadow: 0 16px 32px -4px rgba(0, 51, 102, 0.5),
                            0 6px 16px rgba(2, 132, 199, 0.3);
                background-position: right center;
                color: #ffffff;
            }

            .psu-sso-btn:active {
                transform: translateY(0) scale(0.985);
            }

            .btn-icon-box {
                width: 44px;
                height: 44px;
                background: rgba(255, 255, 255, 0.16);
                border: 1px solid rgba(255, 255, 255, 0.3);
                border-radius: 12px;
                display: flex;
                align-items: center;
                justify-content: center;
                flex-shrink: 0;
            }

            .btn-text-content {
                text-align: left;
                flex: 1;
                margin: 0 16px;
            }
            .btn-main-label {
                font-size: 1.05rem;
                font-weight: 600;
                line-height: 1.3;
                letter-spacing: -0.01em;
                display: block;
            }
            .btn-sub-label {
                font-size: 0.78rem;
                opacity: 0.85;
                font-weight: 400;
                display: block;
            }

            .btn-arrow-icon {
                width: 28px;
                height: 28px;
                display: flex;
                align-items: center;
                justify-content: center;
                background: rgba(255, 255, 255, 0.12);
                border-radius: 50%;
                transition: transform 0.3s ease, background 0.3s ease;
            }
            .psu-sso-btn:hover .btn-arrow-icon {
                transform: translateX(4px);
                background: rgba(255, 255, 255, 0.25);
            }

            /* Trust & Security Badge */
            .security-guarantee {
                background: rgba(241, 245, 249, 0.8);
                border: 1px dashed #cbd5e1;
                border-radius: 12px;
                padding: 10px 14px;
                font-size: 0.82rem;
                color: #475569;
                display: flex;
                align-items: center;
                gap: 8px;
                margin-bottom: 24px;
            }
            .security-guarantee svg {
                flex-shrink: 0;
                color: #0284c7;
            }

            /* Contact Details Section */
            .contact-section {
                border-top: 1px solid #e2e8f0;
                padding-top: 22px;
                margin-top: 8px;
            }
            .contact-header {
                font-size: 0.9rem;
                font-weight: 600;
                color: #1e293b;
                margin-bottom: 12px;
                display: flex;
                align-items: center;
                gap: 6px;
            }
            .contact-item {
                display: flex;
                align-items: flex-start;
                gap: 10px;
                font-size: 0.84rem;
                color: #475569;
                margin-bottom: 8px;
                line-height: 1.45;
            }
            .contact-item-icon {
                width: 22px;
                height: 22px;
                border-radius: 6px;
                background: #eff6ff;
                color: #0284c7;
                display: flex;
                align-items: center;
                justify-content: center;
                flex-shrink: 0;
                margin-top: 2px;
            }
            .contact-link {
                color: #004b87;
                text-decoration: none;
                transition: color 0.2s;
            }
            .contact-link:hover {
                color: #0284c7;
                text-decoration: underline;
            }

            /* Right Column Showcase */
            .hero-visual-container {
                position: relative;
                display: flex;
                align-items: center;
                justify-content: center;
                min-height: 480px;
            }

            .hero-glow-plate {
                position: absolute;
                width: 440px;
                height: 440px;
                background: radial-gradient(circle, rgba(2, 132, 199, 0.18) 0%, rgba(0, 75, 135, 0.08) 50%, transparent 75%);
                border-radius: 50%;
                filter: blur(40px);
                z-index: 0;
            }

            .hero-illustration {
                position: relative;
                z-index: 1;
                max-width: 90%;
                height: auto;
                animation: floatIllustration 5s ease-in-out infinite;
                filter: drop-shadow(0 20px 30px rgba(0, 40, 90, 0.15));
            }

            @keyframes floatIllustration {
                0% { transform: translateY(0px); }
                50% { transform: translateY(-12px); }
                100% { transform: translateY(0px); }
            }

            /* Floating Information Cards */
            .floating-badge {
                position: absolute;
                z-index: 2;
                background: rgba(255, 255, 255, 0.92);
                backdrop-filter: blur(12px);
                -webkit-backdrop-filter: blur(12px);
                border: 1px solid rgba(255, 255, 255, 0.9);
                border-radius: 16px;
                padding: 12px 18px;
                box-shadow: 0 15px 30px -5px rgba(0, 40, 90, 0.12),
                            0 4px 10px rgba(0, 0, 0, 0.03);
                display: flex;
                align-items: center;
                gap: 12px;
                transition: transform 0.3s ease;
            }
            .floating-badge:hover {
                transform: translateY(-4px) scale(1.02);
            }

            .floating-badge-1 {
                top: 40px;
                right: 20px;
                animation: floatBadge1 6s ease-in-out infinite;
            }
            .floating-badge-2 {
                bottom: 40px;
                left: 10px;
                animation: floatBadge2 7s ease-in-out infinite 1s;
            }

            @keyframes floatBadge1 {
                0%, 100% { transform: translateY(0px); }
                50% { transform: translateY(-8px); }
            }
            @keyframes floatBadge2 {
                0%, 100% { transform: translateY(0px); }
                50% { transform: translateY(8px); }
            }

            .badge-icon {
                width: 38px;
                height: 38px;
                border-radius: 10px;
                display: flex;
                align-items: center;
                justify-content: center;
                color: #ffffff;
                flex-shrink: 0;
            }
            .badge-icon-primary {
                background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
            }
            .badge-icon-success {
                background: linear-gradient(135deg, #10b981 0%, #059669 100%);
            }

            .badge-text-title {
                font-size: 0.86rem;
                font-weight: 600;
                color: #0f172a;
                margin-bottom: 2px;
            }
            .badge-text-desc {
                font-size: 0.74rem;
                color: #64748b;
                margin: 0;
            }

            /* Footer */
            .modern-footer {
                position: relative;
                z-index: 2;
                background: rgba(255, 255, 255, 0.7);
                backdrop-filter: blur(10px);
                -webkit-backdrop-filter: blur(10px);
                border-top: 1px solid rgba(226, 232, 240, 0.8);
                padding: 16px 0;
                font-size: 0.86rem;
            }
            .footer-copyright {
                color: #64748b;
            }
            .footer-link {
                color: #004b87;
                font-weight: 500;
                text-decoration: none;
                transition: color 0.2s ease;
            }
            .footer-link:hover {
                color: #0284c7;
                text-decoration: underline;
            }

            /* Mobile & Tablet Responsiveness */
            @media (max-width: 991.98px) {
                .login-card {
                    padding: 30px 24px;
                    border-radius: 20px;
                    margin-bottom: 30px;
                }
                .hero-visual-container {
                    margin-top: 20px;
                    min-height: 360px;
                }
                .floating-badge {
                    display: none;
                }
            }
            @media (max-width: 575.98px) {
                .header-logo-wrap img {
                    height: 48px;
                }
                .card-title {
                    font-size: 1.4rem;
                }
                .psu-sso-btn {
                    padding: 14px 18px;
                }
                .btn-main-label {
                    font-size: 0.95rem;
                }
            }