:root {
            --primary: #FFD700;
            --primary-dark: #FFD700;
            --primary-light: #FFD700;
            --secondary: #333537;
            --secondary-dark: #292B2D;
            --white-smoke: #F5F5F5;
            --text: #141414;
            --muted: #666B70;
            --radius-xl: 30px;
            --radius-md: 16px;
            --transition: cubic-bezier(0.16, 1, 0.3, 1);
        }

        * {
            box-sizing: border-box;
        }

        body {
            min-height: 100vh;
            margin: 0;
            display: grid;
            place-items: center;
            padding: 1rem;
            font-family: 'DM Sans', system-ui, sans-serif;
            background: radial-gradient(circle at 15% 10%, rgba(255, 215, 0, 0.2), transparent 28rem), radial-gradient(circle at 85% 85%, rgba(255, 255, 255, 0.1), transparent 24rem), linear-gradient(135deg, var(--secondary) 0%, var(--secondary-dark) 100%);
            overflow-x: hidden;
        }

            body::before {
                content: "";
                position: fixed;
                inset: 0;
                pointer-events: none;
                background-image: linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
                background-size: 38px 38px;
                opacity: 0.7;
            }

        .login-shell {
            position: relative;
            z-index: 1;
            width: min(100%, 440px);
            animation: cardIn 0.75s var(--transition) both;
        }

        .login-card {
            position: relative;
            overflow: hidden;
            border-radius: var(--radius-xl);
            background: linear-gradient(180deg, #ffffff, var(--white-smoke));
            border: 1px solid rgba(255, 255, 255, 0.5);
            box-shadow: 0 28px 90px rgba(0, 0, 0, 0.38), inset 0 1px 0 rgba(255, 255, 255, 0.9);
            padding: clamp(1.5rem, 5vw, 2.4rem);
        }

            .login-card::before {
                content: "";
                position: absolute;
                inset: 0 0 auto;
                height: 5px;
                background: linear-gradient(90deg, #000000, var(--primary), var(--primary-light));
            }

        .brand {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.85rem;
            margin-bottom: 2rem;
        }

        .brand-mark {
            display: grid;
            place-items: center;
            width: 64px;
            height: 64px;
            border-radius: 50%;
            color: #101010;
            background: radial-gradient(circle at 30% 20%, rgba(255, 255, 255, 0.35), transparent 35%), linear-gradient(135deg, var(--primary-dark), var(--primary), var(--primary-light));
            box-shadow: 0 16px 42px rgba(0, 0, 0, 0.28), 0 0 0 7px rgba(255, 215, 0, 0.12), 0 0 36px rgba(255, 215, 0, 0.35);
            font-size: 1.55rem;
            animation: softPulse 4.2s ease-in-out infinite;
        }

        .brand-text {
            color: var(--secondary);
            font-family: 'Sora', sans-serif;
            font-size: 1.65rem;
            font-weight: 900;
            letter-spacing: -0.05em;
            line-height: 1;
        }

        .login-title {
            margin: 0;
            color: #101010;
            font-family: 'Sora', sans-serif;
            font-size: clamp(2rem, 6vw, 2.6rem);
            font-weight: 900;
            letter-spacing: -0.055em;
            text-align: center;
        }

        .login-subtitle {
            margin: 0.75rem 0 2rem;
            color: var(--muted);
            text-align: center;
            line-height: 1.6;
        }

        .validation-summary-errors {
            padding: 0.9rem 1rem;
            border-radius: var(--radius-md);
            background: rgba(170, 35, 35, 0.08);
            border: 1px solid rgba(170, 35, 35, 0.2);
            color: #9f2323 !important;
            font-size: 0.9rem;
        }

            .validation-summary-errors ul {
                margin: 0;
                padding-left: 1.1rem;
            }

        .form-label {
            color: #202020;
            font-weight: 800;
            font-size: 0.9rem;
            margin-bottom: 0.5rem;
        }

        .form-control {
            min-height: 3.15rem;
            border-radius: var(--radius-md);
            border: 1.5px solid rgba(51, 53, 55, 0.14);
            background: #ffffff;
            color: #111111;
            padding: 0.85rem 1rem;
            font-weight: 600;
            box-shadow: 0 10px 24px rgba(0, 0, 0, 0.05), inset 0 1px 0 rgba(255, 255, 255, 0.9);
            transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s var(--transition);
        }

            .form-control::placeholder {
                color: #9aa0a6;
                font-weight: 500;
            }

            .form-control:focus {
                color: #111111;
                background: #ffffff;
                border-color: rgba(255, 215, 0, 0.8);
                box-shadow: 0 0 0 0.22rem rgba(255, 215, 0, 0.18), 0 14px 32px rgba(0, 0, 0, 0.08);
                transform: translateY(-1px);
            }

        .text-danger,
        .field-validation-error {
            color: #a52727 !important;
            font-size: 0.85rem;
            font-weight: 700;
            margin-top: 0.35rem;
            display: block;
        }

        .form-check {
            display: flex;
            align-items: center;
            gap: 0.55rem;
        }

        .form-check-input {
            width: 1.1rem;
            height: 1.1rem;
            border: 1.5px solid rgba(51, 53, 55, 0.25);
            cursor: pointer;
        }

            .form-check-input:checked {
                background-color: var(--primary);
                border-color: var(--primary-dark);
            }

            .form-check-input:focus {
                border-color: rgba(255, 215, 0, 0.8);
                box-shadow: 0 0 0 0.22rem rgba(255, 215, 0, 0.18);
            }

        .form-check-label {
            color: #3b3f43;
            font-weight: 700;
            cursor: pointer;
        }

        .btn-login {
            position: relative;
            width: 100%;
            min-height: 3.2rem;
            margin-top: 0.5rem;
            border: none;
            border-radius: 999px;
            color: #101010;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary) 55%, var(--primary-light));
            box-shadow: 0 14px 34px rgba(255, 215, 0, 0.28);
            font-weight: 900;
            overflow: hidden;
            transition: transform 0.32s var(--transition), box-shadow 0.32s ease, filter 0.32s ease;
        }

            .btn-login::before {
                content: "";
                position: absolute;
                inset: 0;
                transform: translateX(-110%);
                background: linear-gradient(90deg, transparent, rgba(255,255,255,0.35), transparent);
                transition: transform 0.7s var(--transition);
            }

            .btn-login:hover::before,
            .btn-login:focus::before {
                transform: translateX(110%);
            }

            .btn-login:hover,
            .btn-login:focus {
                color: #050505;
                transform: translateY(-3px);
                filter: saturate(1.05);
                box-shadow: 0 18px 42px rgba(255, 215, 0, 0.42);
            }

        .back-link {
            display: inline-flex;
            justify-content: center;
            width: 100%;
            margin-top: 1.25rem;
            color: var(--primary-dark);
            font-weight: 800;
            text-decoration: none;
        }

            .back-link:hover {
                color: var(--secondary);
                text-decoration: underline;
                text-underline-offset: 0.2em;
            }

        @keyframes cardIn {
            from

        {
            opacity: 0;
            transform: translateY(26px) scale(0.985);
            filter: blur(8px);
        }

        to {
            opacity: 1;
            transform: translateY(0) scale(1);
            filter: blur(0);
        }

        }

        @keyframes softPulse {
            0%, 100%

        {
            transform: scale(1);
        }

        50% {
            transform: scale(1.045);
        }

        }

        @media (max-width: 480px) {
            .login-card

        {
            border-radius: 24px;
            padding: 1.25rem;
        }

        .brand-mark {
            width: 56px;
            height: 56px;
            font-size: 1.35rem;
        }

        .brand-text {
            font-size: 1.45rem;
        }

        }

        @media (prefers-reduced-motion: reduce) {
            *, *::before, *::after

        {
            animation-duration: 0.01ms !important;
            animation-iteration-count: 1 !important;
            transition-duration: 0.01ms !important;
        }

        .form-control:focus,
        .btn-login:hover,
        .btn-login:focus {
            transform: none !important;
        }

        }