:root {
            --primary-color: #6366f1;
            --primary-dark: #4f46e5;
            --primary-light: #818cf8;
            --secondary-color: #ec4899;
            --success-color: #10b981;
            --error-color: #ef4444;
            --warning-color: #f59e0b;
            --text-dark: #1f2937;
            --text-light: #6b7280;
            --border-color: #e5e7eb;
            --bg-light: #f9fafb;
            --bg-white: #ffffff;
            --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.15);
            --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }

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

        html, body {
            width: 100%;
            height: 100%;
            overflow: hidden;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
            color: var(--text-dark);
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .container {
            width: 100%;
            height: 100%;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 20px;
        }

        .form-wrapper {
            position: relative;
            width: 100%;
            max-width: 450px;
            z-index: 10;
        }

        .form-container {
            background: var(--bg-white);
            border-radius: 20px;
            padding: 50px 40px;
            box-shadow: var(--shadow-xl);
            opacity: 0;
            visibility: hidden;
            transform: translateX(100px);
            transition: var(--transition);
            position: absolute;
            width: 100%;
            top: 0;
            left: 0;
        }

        .form-container.active {
            opacity: 1;
            visibility: visible;
            transform: translateX(0);
            position: relative;
        }

        .form-container.leaving {
            transform: translateX(-100px);
        }

        .background-animation {
            position: fixed;
            width: 100%;
            height: 100%;
            top: 0;
            left: 0;
            z-index: 0;
            overflow: hidden;
        }

        .blob {
            position: absolute;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            filter: blur(40px);
        }

        .blob-1 {
            width: 300px;
            height: 300px;
            top: -50px;
            right: -50px;
            animation: float 6s ease-in-out infinite;
        }

        .blob-2 {
            width: 200px;
            height: 200px;
            bottom: 50px;
            left: -50px;
            animation: float 8s ease-in-out infinite 2s;
        }

        .blob-3 {
            width: 250px;
            height: 250px;
            bottom: -50px;
            right: 50px;
            animation: float 7s ease-in-out infinite 4s;
        }

        @keyframes float {
            0%, 100% {
                transform: translateY(0px) rotate(0deg);
            }
            50% {
                transform: translateY(30px) rotate(180deg);
            }
        }

        .form-header {
            text-align: center;
            margin-bottom: 35px;
        }

        .form-header h1 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
        }

        .form-header p {
            color: var(--text-light);
            font-size: 14px;
        }

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .input-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .input-group label {
            font-weight: 600;
            font-size: 14px;
            color: var(--text-dark);
            display: flex;
            align-items: center;
        }

        .input-group input,
        .input-group textarea {
            padding: 12px 16px;
            border: 2px solid var(--border-color);
            border-radius: 10px;
            font-size: 14px;
            transition: var(--transition);
            font-family: inherit;
            background: var(--bg-white);
        }

        .input-group input:focus,
        .input-group textarea:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
        }

        .input-group input:hover,
        .input-group textarea:hover {
            border-color: var(--primary-light);
        }

        .input-group input.error {
            border-color: var(--error-color);
        }

        .input-group input.success {
            border-color: var(--success-color);
        }

        .password-input {
            display: flex;
            align-items: center;
            border: 2px solid var(--border-color);
            border-radius: 10px;
            transition: var(--transition);
        }

        .password-input input {
            flex: 1;
            border: none;
            padding: 12px 16px;
            font-size: 14px;
            background: transparent;
        }

        .password-input input:focus {
            outline: none;
        }

        .password-input:focus-within {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
        }

        .toggle-password {
            background: none;
            border: none;
            padding: 10px;
            cursor: pointer;
            color: var(--text-light);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

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

        .password-strength {
            margin-top: 8px;
        }

        .strength-bar {
            height: 4px;
            background: var(--border-color);
            border-radius: 2px;
            overflow: hidden;
            margin-bottom: 6px;
        }

        .strength-fill {
            height: 100%;
            width: 0%;
            transition: var(--transition);
        }

        .strength-text {
            font-size: 12px;
            color: var(--text-light);
        }

        .strength-weak .strength-fill {
            width: 33%;
            background: var(--error-color);
        }

        .strength-weak .strength-text {
            color: var(--error-color);
        }

        .strength-medium .strength-fill {
            width: 66%;
            background: var(--warning-color);
        }

        .strength-medium .strength-text {
            color: var(--warning-color);
        }

        .strength-strong .strength-fill {
            width: 100%;
            background: var(--success-color);
        }

        .strength-strong .strength-text {
            color: var(--success-color);
        }

        .error-message {
            font-size: 12px;
            color: var(--error-color);
            display: none;
            margin-top: -4px;
        }

        .error-message.show {
            display: block;
        }

        .info-message {
            background: rgba(99, 102, 241, 0.1);
            border-left: 4px solid var(--primary-color);
            padding: 12px 16px;
            border-radius: 8px;
            font-size: 14px;
            color: var(--primary-color);
        }

        .checkbox {
            display: flex;
            align-items: center;
            gap: 10px;
            cursor: pointer;
            font-size: 14px;
            color: var(--text-dark);
            user-select: none;
        }

        .checkbox input {
            width: 18px;
            height: 18px;
            cursor: pointer;
            accent-color: var(--primary-color);
        }

        .checkbox a {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 500;
        }

        .checkbox a:hover {
            text-decoration: underline;
        }

        .remember-forgot {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 14px;
        }

        .remember-forgot .checkbox {
            margin: 0;
        }

        .btn {
            padding: 12px 24px;
            border: none;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            font-family: inherit;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
            color: white;
            width: 100%;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }

        .btn-primary:active {
            transform: translateY(0);
        }

        .btn-social {
            width: 100%;
            border: 2px solid var(--border-color);
            color: var(--text-dark);
            background: var(--bg-white);
            margin-top: 10px;
        }

        .btn-social:hover {
            border-color: var(--primary-color);
            background: var(--bg-light);
        }

        .btn-google svg {
            width: 20px;
            height: 20px;
        }

        .form-footer {
            text-align: center;
            margin-top: 25px;
            font-size: 14px;
            color: var(--text-light);
        }

        .form-footer p {
            margin: 0;
        }

        .link {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 600;
            transition: var(--transition);
        }

        .link:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }

        .divider {
            text-align: center;
            color: var(--text-light);
            font-size: 13px;
            margin: 20px 0;
            position: relative;
        }

        .divider::before,
        .divider::after {
            content: '';
            position: absolute;
            top: 50%;
            width: 45%;
            height: 1px;
            background: var(--border-color);
        }

        .divider::before {
            left: 0;
        }

        .divider::after {
            right: 0;
        }

        .success-content {
            text-align: center;
            padding: 30px 0;
        }

        .success-icon {
            width: 80px;
            height: 80px;
            margin: 0 auto 25px;
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            animation: scaleIn 0.6s ease-out;
        }

        @keyframes scaleIn {
            0% {
                transform: scale(0);
            }
            50% {
                transform: scale(1.1);
            }
            100% {
                transform: scale(1);
            }
        }

        .success-content h1 {
            color: var(--text-dark);
            margin-bottom: 10px;
        }

        .success-content p {
            color: var(--text-light);
            margin-bottom: 30px;
        }

        @media (max-width: 600px) {
            .form-container {
                padding: 40px 25px;
            }

            .form-header h1 {
                font-size: 24px;
            }

            .form-header p {
                font-size: 13px;
            }

            .remember-forgot {
                flex-direction: column;
                gap: 15px;
                align-items: flex-start;
            }

            .btn {
                padding: 14px 20px;
                font-size: 14px;
            }

            .input-group input,
            .password-input {
                padding: 14px 12px;
                font-size: 16px;
            }

            .blob {
                display: none;
            }

            body {
                align-items: flex-start;
                padding-top: 40px;
            }

            .container {
                align-items: flex-start;
                padding: 20px 15px;
            }
        }

        @media (max-width: 400px) {
            .form-container {
                padding: 30px 20px;
            }

            .form-header h1 {
                font-size: 22px;
            }

            .form-group {
                gap: 16px;
            }

            .input-group {
                gap: 6px;
            }

            .input-group label {
                font-size: 13px;
            }

            .input-group input,
            .password-input {
                padding: 12px 10px;
                font-size: 16px;
            }
        }

        @keyframes loading {
            0% {
                opacity: 0.6;
            }
            50% {
                opacity: 1;
            }
            100% {
                opacity: 0.6;
            }
        }

        @keyframes spin {
            to { transform: rotate(360deg); }
        }

        .btn:disabled {
            opacity: 0.7;
            cursor: not-allowed;
            animation: loading 1.5s ease-in-out infinite;
        }