:root {
            --primary-blue: #2563eb;
            --primary-hover: #1d4ed8;
            --accent-glow: rgba(37, 99, 235, 0.35);
        }

        body {
            height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: 'Inter', sans-serif;
            overflow: hidden;
            position: relative;
            margin: 0;
            background-color: #0f172a;
        }

        .bg-slideshow {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -2;
            overflow: hidden;
        }

        .bg-slide {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-size: cover;
            background-position: center;
            opacity: 0;
            transform: scale(1.05);
            transition: opacity 1.5s ease-in-out, transform 8s ease-out;
        }

        .bg-slide.active {
            opacity: 1;
            transform: scale(1);
        }

        .bg-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(circle at center, rgba(15, 23, 42, 0.55) 0%, rgba(15, 23, 42, 0.85) 100%);
            z-index: -1;
        }

        .glass-card {
            background: rgba(15, 23, 42, 0.55);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 20px;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
            color: #fff;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .form-label {
            font-weight: 500;
            letter-spacing: 0.3px;
            color: rgba(255, 255, 255, 0.85);
        }

        .input-group {
            border-radius: 10px;
            transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            border: 1px solid rgba(255, 255, 255, 0.15);
            background: rgba(255, 255, 255, 0.05);
        }

        .input-group:focus-within {
            border-color: var(--primary-blue);
            box-shadow: 0 0 0 4px var(--accent-glow);
            background: rgba(255, 255, 255, 0.08);
        }

        .input-group-text {
            background: transparent;
            border: none;
            color: rgba(255, 255, 255, 0.5);
            font-size: 1.1rem;
            padding-left: 1rem;
            padding-right: 0.75rem;
            transition: color 0.25s ease;
        }

        .input-group:focus-within .input-group-text {
            color: var(--primary-blue);
        }

        .form-control {
            background: transparent;
            border: none;
            color: #fff;
            font-size: 0.925rem;
            padding: 0.75rem 0.75rem 0.75rem 0;
        }

        .form-control:focus {
            background: transparent;
            box-shadow: none;
            color: #fff;
        }

        .form-control::placeholder {
            color: rgba(255, 255, 255, 0.35);
        }

        .btn-toggle-pass {
            cursor: pointer;
            border: none;
            background: transparent;
            color: rgba(255, 255, 255, 0.4);
            padding-right: 1rem;
            padding-left: 0.5rem;
            display: flex;
            align-items: center;
            transition: color 0.2s ease;
        }

        .btn-toggle-pass:hover {
            color: #fff;
        }

        .btn-primary-pro {
            background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
            border: none;
            color: #ffffff;
            border-radius: 10px;
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.3px;
            padding: 0.75rem 1.5rem;
            box-shadow: 0 4px 15px rgba(37, 99, 235, 0.35);
            transition: all 0.3s ease;
        }

        .btn-primary-pro:hover {
            background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
            box-shadow: 0 6px 20px rgba(37, 99, 235, 0.5);
            transform: translateY(-1px);
            color: #fff;
        }

        .btn-primary-pro:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
        }

        .btn-back-home {
            background: transparent;
            border: none;
            color: rgba(255, 255, 255, 0.65);
            text-decoration: none;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.875rem;
            font-weight: 500;
            padding: 0.5rem;
            transition: color 0.25s ease, transform 0.25s ease;
        }

        .btn-back-home:hover {
            background: transparent;
            border: none;
            color: #ffffff; 
            transform: translateX(-3px); 
        }

        /* Custom Alert */
        .alert-custom {
            background: rgba(225, 29, 72, 0.15);
            border: 1px solid rgba(225, 29, 72, 0.3);
            color: #fecdd3;
            border-radius: 10px;
            backdrop-filter: blur(8px);
        }