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

        html, body {
            width: 100%;
            height: 100%;
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            -webkit-font-smoothing: antialiased;
        }

        body {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(180deg, #29afe4 0%, #4e9ed2 100%);
            padding: 20px;
        }

        .container {
            width: 100%;
            max-width: 800px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }

        .header-section {
            text-align: center;
            margin-bottom: 0;
            color: #212121;
            padding-bottom: 30px;
            border-bottom: 1px solid #E0E0E0;
        }

        .logo-wrapper {
            display: flex;
            justify-content: center;
            margin-bottom: 20px;
        }

        .brand-logo {
            width: 70px;
            height: 70px;
            filter: brightness(1.2) drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
        }

        .brand-title {
            font-size: 36px;
            font-weight: 700;
            color: #212121;
            margin-bottom: 8px;
        }

        .card-subtitle {
            font-size: 20px;
            color: #2196F3;
            font-weight: 600;
            margin-bottom: 15px;
        }

        .header-description {
            font-size: 14px;
            color: #757575;
            line-height: 1.6;
            max-width: 100%;
        }

        .form-card {
            background: white;
            border-radius: 16px;
            padding: 40px 40px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
            width: 100%;
            max-width: 420px;
            margin-bottom: 30px;
        }

        .form-group {
            margin-bottom: 28px;
        }

        .form-label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: #212121;
            margin-bottom: 12px;
        }

        .form-input {
            width: 100%;
            padding: 12px 14px;
            font-size: 14px;
            border: 1px solid #BDBDBD;
            border-radius: 6px;
            background: white;
            color: #212121;
            transition: all 0.3s ease;
            font-family: inherit;
        }

        .form-input::placeholder {
            color: #BDBDBD;
        }

        .form-input:focus {
            outline: none;
            border-color: #2196F3;
            box-shadow: 0 0 0 2px rgba(33, 150, 243, 0.1);
        }

        .submit-button {
            width: 100%;
            padding: 14px 24px;
            font-size: 15px;
            font-weight: 700;
            color: white;
            background: #2196F3;
            border: none;
            border-radius: 6px;
            cursor: pointer;
            transition: all 0.3s ease;
            letter-spacing: 0.5px;
            box-shadow: 0 2px 8px rgba(33, 150, 243, 0.2);
        }

        .submit-button:hover {
            background: #1976D2;
            box-shadow: 0 4px 12px rgba(33, 150, 243, 0.3);
        }

        .submit-button:active {
            background: #1565C0;
            transform: translateY(1px);
        }

        .submit-button:disabled {
            opacity: 0.7;
            cursor: not-allowed;
        }

        .back-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 15px;
            font-weight: 700;
            color: #d00703;
            text-decoration: none;
            padding: 8px 16px;
            border: 2px solid #E53935;
            border-radius: 6px;
            transition: all 0.3s ease;
        }

        .back-link:hover {
            background: #E53935;
            color: white;
        }

        @media (max-width: 480px) {
            .form-card {
                padding: 35px 28px;
            }

            .brand-title {
                font-size: 36px;
            }

            .card-subtitle {
                font-size: 20px;
            }

            .header-section {
                margin-bottom: 40px;
            }

            .logo-wrapper {
                margin-bottom: 20px;
            }

            .brand-logo {
                width: 60px;
                height: 60px;
            }

            .header-description {
                font-size: 14px;
            }
        }

        @media (max-width: 320px) {
            .form-card {
                padding: 28px 20px;
            }

            .brand-title {
                font-size: 28px;
            }

            .card-subtitle {
                font-size: 18px;
            }

            .brand-logo {
                width: 50px;
                height: 50px;
            }
        }