:root {
                --bg-gradient: linear-gradient(135deg, #1e1b18 0%, #2d241e 100%);
                --card-bg: rgba(255, 255, 255, 0.03);
                --card-border: rgba(255, 255, 255, 0.08);
                --text-primary: #fcf8f2;
                --text-secondary: #c2b29f;
                --accent-color: #d4af37;
                --accent-hover: #bfa030;
                --font-display: 'Outfit', sans-serif;
                --font-sans: 'Inter', sans-serif;
            }

            * {
                margin: 0;
                padding: 0;
                box-sizing: border-box;
            }

            body {
                font-family: var(--font-sans);
                background: var(--bg-gradient);
                color: var(--text-primary);
                min-height: 100vh;
                display: flex;
                align-items: center;
                justify-content: center;
                padding: 20px;
                overflow: hidden;
                position: relative;
            }

            /* Decorative Background Elements */
            .bg-decor {
                position: absolute;
                width: 400px;
                height: 400px;
                background: radial-gradient(circle, rgba(212, 175, 55, 0.08) 0%, transparent 70%);
                border-radius: 50%;
                pointer-events: none;
                z-index: 1;
            }
            .bg-decor-1 {
                top: -100px;
                right: -100px;
            }
            .bg-decor-2 {
                bottom: -100px;
                left: -100px;
            }

            .login-card {
                background: var(--card-bg);
                border: 1px solid var(--card-border);
                border-radius: 24px;
                padding: 40px 30px;
                width: 100%;
                max-width: 460px;
                text-align: center;
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), 
                            inset 0 1px 0 rgba(255, 255, 255, 0.1);
                z-index: 2;
                animation: fadeIn 0.8s ease-out;
            }

            @keyframes fadeIn {
                from {
                    opacity: 0;
                    transform: translateY(20px);
                }
                to {
                    opacity: 1;
                    transform: translateY(0);
                }
            }

            .icon-container {
                width: 80px;
                height: 80px;
                background: rgba(212, 175, 55, 0.1);
                border: 1.5px solid rgba(212, 175, 55, 0.25);
                border-radius: 50%;
                display: flex;
                align-items: center;
                justify-content: center;
                margin: 0 auto 24px;
                font-size: 32px;
                color: var(--accent-color);
                box-shadow: 0 8px 24px rgba(212, 175, 55, 0.15);
                animation: pulse 3s infinite;
            }

            @keyframes pulse {
                0% {
                    box-shadow: 0 0 0 0 rgba(212, 175, 55, 0.2);
                }
                70% {
                    box-shadow: 0 0 0 15px rgba(212, 175, 55, 0);
                }
                100% {
                    box-shadow: 0 0 0 0 rgba(212, 175, 55, 0);
                }
            }

            .login-card h1 {
                font-family: var(--font-display);
                font-size: 26px;
                font-weight: 700;
                margin-bottom: 12px;
                color: var(--text-primary);
                letter-spacing: 0.5px;
            }

            .login-card p {
                font-size: 15px;
                line-height: 1.6;
                color: var(--text-secondary);
                margin-bottom: 32px;
            }

            .login-btn {
                display: inline-flex;
                align-items: center;
                justify-content: center;
                gap: 10px;
                background: linear-gradient(135deg, var(--accent-color) 0%, #b89528 100%);
                color: #1e1b18;
                font-family: var(--font-sans);
                font-weight: 600;
                font-size: 16px;
                padding: 14px 36px;
                border: none;
                border-radius: 12px;
                cursor: pointer;
                width: 100%;
                transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
                box-shadow: 0 10px 20px rgba(212, 175, 55, 0.2);
            }

            .login-btn:hover {
                transform: translateY(-2px);
                box-shadow: 0 12px 24px rgba(212, 175, 55, 0.35);
                background: linear-gradient(135deg, #e3bd44 0%, var(--accent-color) 100%);
            }

            .login-btn:active {
                transform: translateY(1px);
            }

            .home-link {
                display: inline-block;
                margin-top: 20px;
                color: var(--text-secondary);
                text-decoration: none;
                font-size: 14px;
                transition: color 0.2s;
            }

            .home-link:hover {
                color: var(--accent-color);
                text-decoration: underline;
            }

            /* Overrides to make dangnhap.php modals look premium and fit the theme */
            .modal-content {
                background: #251e18 !important;
                border: 1px solid rgba(255, 255, 255, 0.1) !important;
                color: #fcf8f2 !important;
                box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5) !important;
            }
            .modal-header, .modal-footer {
                background: #1c1612 !important;
                border-color: rgba(255, 255, 255, 0.08) !important;
            }
            .modal-title {
                color: #fcf8f2 !important;
            }
            .modal-title small {
                color: #c2b29f !important;
            }
            .close {
                color: #c2b29f !important;
            }
            .close:hover {
                color: #fcf8f2 !important;
            }
            .form-control {
                background: rgba(255, 255, 255, 0.05) !important;
                border: 1px solid rgba(255, 255, 255, 0.1) !important;
                color: #fcf8f2 !important;
            }
            .form-control:focus {
                border-color: var(--accent-color) !important;
                box-shadow: 0 0 6px rgba(212, 175, 55, 0.3) !important;
            }
            .remember {
                color: #c2b29f !important;
            }
            .btn-primary {
                background: var(--accent-color) !important;
                color: #1e1b18 !important;
                font-weight: 600 !important;
            }
            .btn-primary:hover:enabled {
                background: #e3bd44 !important;
            }
            .btn-primary:disabled {
                background: rgba(212, 175, 55, 0.4) !important;
                color: rgba(30, 27, 24, 0.5) !important;
            }
            .btn-secondary {
                background: rgba(255, 255, 255, 0.1) !important;
                border: 1px solid rgba(255, 255, 255, 0.1) !important;
                color: #fcf8f2 !important;
            }
            .btn-secondary:hover {
                background: rgba(255, 255, 255, 0.15) !important;
            }
            .switch-link {
                color: var(--accent-color) !important;
            }
            .switch-link:hover {
                color: #e3bd44 !important;
            }