:root {
            --primary: #6c5ce7;
            --primary-dark: #5649c0;
            --secondary: #00cec9;
            --accent: #fd79a8;
            --light: #f8f9fa;
            --dark: #2d3436;
            --success: #00b894;
            --warning: #fdcb6e;
            --error: #d63031;
            --glass: rgba(255, 255, 255, 0.15);
            --glass-border: rgba(255, 255, 255, 0.2);
        }

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

        body {
            font-family: 'Poppins', sans-serif;
            background: linear-gradient(135deg, #2c3e50 0%, #4ca1af 100%);
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            color: var(--light);
            overflow: hidden;
            position: relative;
        }

        /* Floating Particles Background */
        .particles {
            position: absolute;
            width: 100%;
            height: 100%;
            z-index: -1;
            overflow: hidden;
        }

        .particle {
            position: absolute;
            border-radius: 50%;
            filter: blur(1px);
            mix-blend-mode: screen;
            animation: floatParticle linear infinite;
            opacity: 0;
        }

        @keyframes floatParticle {
            0% {
                transform: translateY(100vh) scale(0.5) rotate(0deg);
                opacity: 0;
            }
            20% {
                opacity: 0.8;
            }
            90% {
                opacity: 0.8;
            }
            100% {
                transform: translateY(-20vh) scale(1) rotate(360deg);
                opacity: 0;
            }
        }

        /* Glowing Light Effect */
        .glow {
            position: absolute;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, 
                rgba(108, 92, 231, 0.4) 0%, 
                transparent 70%);
            filter: blur(30px);
            z-index: -1;
            animation: pulseGlow 8s ease infinite;
        }

        @keyframes pulseGlow {
            0%, 100% {
                transform: scale(1);
                opacity: 0.6;
            }
            50% {
                transform: scale(1.2);
                opacity: 0.8;
            }
        }

        /* Main Login Container */
        .login-container {
            background: var(--glass);
            backdrop-filter: blur(25px);
            -webkit-backdrop-filter: blur(25px);
            border-radius: 20px;
            padding: 3rem;
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25),
                        inset 0 0 0 1px var(--glass-border);
            text-align: center;
            width: 90%;
            max-width: 450px;
            animation: fadeIn 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            position: relative;
            overflow: hidden;
            transform-style: preserve-3d;
            transition: all 0.5s ease;
        }

        .login-container::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: linear-gradient(
                to bottom right,
                rgba(255,255,255,0) 0%,
                rgba(255,255,255,0.1) 50%,
                rgba(255,255,255,0) 100%
            );
            transform: rotate(30deg);
            animation: shine 6s infinite;
        }

        @keyframes shine {
            0% {
                transform: translateX(-100%) rotate(30deg);
            }
            100% {
                transform: translateX(100%) rotate(30deg);
            }
        }

        .login-container:hover {
            transform: translateY(-5px);
            box-shadow: 0 30px 60px -10px rgba(0, 0, 0, 0.3),
                        inset 0 0 0 1px rgba(255,255,255,0.3);
        }

        /* Logo Section */
        .logo-section {
            margin-bottom: 2.5rem;
            position: relative;
            z-index: 2;
        }

        .logo-icon {
            width: 100px;
            height: 100px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            box-shadow: 0 15px 35px rgba(108, 92, 231, 0.5);
            animation: float 4s ease-in-out infinite;
            position: relative;
            overflow: hidden;
        }

        .logo-icon img {
            width: 100%;
            height: 100%;
            object-fit: contain;
        }

        @keyframes float {
            0%, 100% {
                transform: translateY(0px);
            }
            50% {
                transform: translateY(-15px);
            }
        }

        h1 {
            font-size: 2.2rem;
            background: linear-gradient(to right, var(--light), var(--secondary));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            margin-bottom: 0.5rem;
            font-weight: 700;
            letter-spacing: -0.5px;
        }

        p.subtitle {
            color: rgba(255,255,255,0.7);
            font-size: 1rem;
            margin-bottom: 2rem;
            font-weight: 300;
        }

        /* Form Elements */
        .input-group {
            margin-bottom: 1.8rem;
            text-align: left;
            position: relative;
        }

        .input-group label {
            display: block;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.9);
            margin-bottom: 0.8rem;
            font-weight: 400;
            padding-left: 0.5rem;
        }

        .input-group input {
            width: 100%;
            padding: 1.1rem 1.5rem;
            border: none;
            border-radius: 12px;
            font-size: 1rem;
            color: var(--light);
            background: rgba(0,0,0,0.2);
            backdrop-filter: blur(5px);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            border: 1px solid rgba(255,255,255,0.1);
        }

        .input-group input:focus {
            outline: none;
            background: rgba(0,0,0,0.3);
            box-shadow: 0 0 0 3px rgba(0, 206, 201, 0.3),
                        0 10px 15px -3px rgba(0, 0, 0, 0.2);
            border-color: var(--secondary);
        }

        .input-group input::placeholder {
            color: rgba(255,255,255,0.5);
        }

        /* Password Toggle */
        .password-container {
            position: relative;
        }

        .toggle-password {
            position: absolute;
            right: 15px;
            top: 50%;
            transform: translateY(-50%);
            cursor: pointer;
            color: rgba(255,255,255,0.5);
            background: none;
            border: none;
            font-size: 1.2rem;
            transition: all 0.3s ease;
        }

        .toggle-password:hover {
            color: var(--light);
        }

        /* Submit Button */
        button[type="submit"] {
            width: 100%;
            padding: 1.2rem;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: white;
            border: none;
            border-radius: 12px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            box-shadow: 0 10px 25px rgba(108, 92, 231, 0.5);
            position: relative;
            overflow: hidden;
            margin-top: 1rem;
            letter-spacing: 0.5px;
            text-transform: uppercase;
            z-index: 1;
        }

        button[type="submit"]::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            opacity: 0;
            transition: opacity 0.3s ease;
            z-index: -1;
        }

        button[type="submit"]:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 30px rgba(108, 92, 231, 0.6);
        }

        button[type="submit"]:hover::before {
            opacity: 1;
        }

        button[type="submit"]:active {
            transform: translateY(-1px);
            box-shadow: 0 5px 15px rgba(108, 92, 231, 0.4);
        }

        /* Loading State */
        .btn-content {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.8rem;
        }

        .spinner {
            display: none;
            animation: spin 1s linear infinite;
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        /* Error Message */
        .error-message {
            color: var(--error);
            font-size: 0.9rem;
            margin-top: 1.5rem;
            min-height: 20px;
            opacity: 0;
            transition: opacity 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
        }

        .error-message.show {
            opacity: 1;
        }

        /* Modal Styles */
        .modal-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.8);
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            backdrop-filter: blur(10px);
        }

        .modal-overlay.show {
            opacity: 1;
            visibility: visible;
        }

        .modal-content {
            background: var(--dark);
            padding: 2.5rem;
            border-radius: 20px;
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
            text-align: center;
            width: 90%;
            max-width: 500px;
            transform: translateY(-30px) scale(0.95);
            opacity: 0;
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            border: 1px solid rgba(255,255,255,0.1);
            position: relative;
            overflow: hidden;
        }

        .modal-overlay.show .modal-content {
            transform: translateY(0) scale(1);
            opacity: 1;
        }

        .modal-content h2 {
            color: var(--accent);
            font-size: 1.8rem;
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.8rem;
        }

        .modal-content p {
            color: rgba(255,255,255,0.8);
            margin-bottom: 2.5rem;
            line-height: 1.6;
            font-size: 1.1rem;
        }

        .modal-content button {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: white;
            padding: 1rem 2.5rem;
            border: none;
            border-radius: 12px;
            cursor: pointer;
            font-weight: 600;
            transition: all 0.3s ease;
            box-shadow: 0 10px 20px rgba(108, 92, 231, 0.3);
            font-size: 1rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .modal-content button:hover {
            transform: translateY(-2px);
            box-shadow: 0 15px 25px rgba(108, 92, 231, 0.4);
        }

        /* Toast Notification */
        .toast {
            position: fixed;
            bottom: 40px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--dark);
            color: white;
            padding: 1rem 2rem;
            border-radius: 12px;
            font-size: 0.95rem;
            font-weight: 500;
            z-index: 1000;
            animation: toastSlideUp 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
            display: flex;
            align-items: center;
            gap: 1rem;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255,255,255,0.1);
            max-width: 90%;
        }

        @keyframes toastSlideUp {
            from {
                opacity: 0;
                transform: translate(-50%, 30px) scale(0.9);
            }
            to {
                opacity: 1;
                transform: translate(-50%, 0) scale(1);
            }
        }

        @keyframes toastSlideDown {
            from {
                opacity: 1;
                transform: translate(-50%, 0) scale(1);
            }
            to {
                opacity: 0;
                transform: translate(-50%, 30px) scale(0.9);
            }
        }

        /* Responsive Adjustments */
        @media (max-width: 768px) {
            .login-container {
                padding: 2.5rem 2rem;
            }
            
            h1 {
                font-size: 2rem;
            }
            
            .logo-icon {
                width: 90px;
                height: 90px;
            }
        }

        @media (max-width: 480px) {
            .login-container {
                padding: 2rem 1.5rem;
                width: 95%;
            }
            
            h1 {
                font-size: 1.8rem;
            }
            
            .logo-icon {
                width: 100px;
                height: 100px;
            }
            
            .input-group input {
                padding: 1rem 1.2rem;
            }
            
            button[type="submit"] {
                padding: 1.1rem;
            }
        }